MacDermid Alpha
MacDermid Alpha Soldering Materials & Electronics Assembly Solutions
MacDermid Alpha Electronics Solutions develops materials and process solutions for electronics manufacturing, including solder pastes, solder alloys and wire, fluxes, cleaning chemistries, surface-finishing technologies, and semiconductor packaging materials. These technologies support printed circuit board assembly and advanced electronics production across automotive, telecommunications, consumer electronics, aerospace, industrial, medical, semiconductor, data-center, and renewable-energy applications.
As an authorized MacDermid Alpha Electronics Solutions distributor, Krayden supplies selected ALPHA and Kester soldering materials, fluxes, cleaners, and related electronic assembly products. Our team can help customers compare material options, review application and process requirements, and identify suitable products for production, rework, and repair workflows.
Markets Served by MacDermid Alpha
Featured MacDermid Alpha Brands
ALPHA and Kester cover solder pastes, solder alloys and wire, fluxes, cleaning materials, and related electronics-assembly applications.

ALPHA®
ALPHA materials support electronic assembly with solder pastes, solder alloys, fluxes, preforms, solder wire, and rework products used across automated and high-reliability manufacturing environments.

Kester®
Kester offers solder wire, fluxes, solder pastes, and cleaning chemistries for automated assembly, manual soldering, repair, and rework processes in electronics manufacturing.
Solder Pastes
MacDermid Alpha solder pastes combine solder alloy particles with flux media for surface-mount assembly and reflow processing. The source portfolio includes lead-free and specialty formulations for fine-pitch components, advanced packaging, and high-density PCB assemblies. Paste selection depends on alloy, powder type, printing method, stencil design, reflow profile, residue requirements, and the reliability needs of the finished assembly.
Solder Elements
MacDermid Alpha solder elements include solder alloys supplied in forms used for production assembly, manual soldering, and electronic rework. The source portfolio includes solder wire, rework alloys, solder bars, preforms, and specialty alloy solutions. Selection should consider alloy composition, melting range, product form, flux-core or solid construction, process method, and the mechanical and electrical requirements of the joint.
Solder Flux
MacDermid Alpha solder flux products support solderability by preparing metal surfaces and promoting wetting during soldering. The source portfolio includes liquid fluxes, tacky fluxes, and associated cleaning chemistries used in wave soldering, selective soldering, hand soldering, rework, and repair. Selection depends on soldering method, flux chemistry, solids content, residue or cleaning requirements, substrate and component sensitivity, and the intended process window.
Talk to our Experts
Krayden can help compare MacDermid Alpha solder pastes, solder alloys and wire, fluxes, and cleaning materials for PCB assembly, soldering, rework, and repair processes. Our team can support product selection, application requirements, process considerations, and comparison of candidate materials for your manufacturing workflow.
MacDermid Alpha Quick Reference
123 products


KESTER 959T Soldering Flux
- Excellent wetting
- Low rosin content
- Non-corrosive


KESTER 952-S Soldering Flux
- Formulated for photovoltaic applications
- High reliability ribbons
- Halogen-free & low-solids


ALPHA OM-338-PT Paste Solder Flux
- Consistent printing down to 11 mil (0.28 mm)
- Halide‑free (ROL0)
- Meets IPC‑7095 Class 3 voiding


ALPHA 611
- Dense Plated-Through-Hole Coverage
- Controlled RMA Rosin Activity
- Cleanable Critical-Assembly Residues


ALPHA EF-6808HF
- High-Density Hole-Fill Performance
- Low-Bridging Wave Soldering
- Transparent Pin-Testable Residue


ENTHONE 20/A
- Two-Hour Mixed-Ink Pot Life
- Ambient or Heat Cure
- Permanent Marking Application Flexibility


KESTER 2331-ZX Soldering Flux
- Neutral pH
- Minimal foaming
- Low-odor emission


KESTER 2235 Soldering Flux
- Minimizes icicling and bridging
- Compatible with most masks and laminates
- High activity


ENTHONE 45
- M- and 50-Series Compatibility
- Catalyst-Selected Cure Control
- Permanent Marking System Integration


ALPHA 615
- Fast High-Activity RMA Wetting
- Flexible Foam-or-Spray Processing
- Cleanable High-Preheat Residues


ALPHA EF8300LR
- Greater Than 96% Hole Fill
- Low-Bridging Cu-OSP Soldering
- Halide-Free Tack-Free Residue


ENTHONE 50
- Ambient or Heat-Cure Flexibility
- Multi-Method Permanent Marking
- Chemical- and Thermal-Resistant Films


ALPHA 615-15
- Low-Solids Surface-Mount Selection
- Flexible Foam-or-Spray Processing
- Defined Flux-Control Window


ALPHA EF-9301
- Greater Than 95% Hole Fill
- Low-Bridging SMT Soldering
- Spray or Foam Fluxing


ENTHONE 77
- Ambient or Heat-Cure Choice
- One-Hour Ink Pot Life
- Heat-Enhanced Adhesion Development


Kester TSF-ULR18
- Ultra-low residue
- No-clean formulation
- High reliability


ALPHA HITECH CU11-3127
- One-Component Capillary Underfill
- 177 deg C Glass Transition
- 20-Minute 140 deg C Cure


ALPHA HF-1
- Wide reflow profile window supporting air and nitrogen reflow with straight-ramp or soak profiles up to 300 °C.
- ROL0, halide-free flux system with residue suitable to remain on the circuit board without cleaning.
- Broad rework capability covering touch-up, hand soldering, BGA repair/re-balling, and QFN/LGA repair.


ENTHONE AD2001
- Incremental 3 to 6% Thinning
- Post-Induction Process Control
- Extended Ink Pot Life


ALPHA NF3000 Water-Soluble Flux
- Water-soluble formulation
- Organic activating system
- Wide thermal window


Kester TSF-6502JCR
- 8-hour stencil life
- Printing up to <16mil pitch
- ROL1 & Bellcore GR-78 compliant


ALPHA 856
- Neutral Buffered Residue for Water Cleaning
- Fast-Recovering Foam for Production Coverage
- Defined Four-Hour Cleaning Window


ENTHONE AD2002
- Spray-Application Viscosity Control
- Air-Pressure and Orifice Adjustment
- Extended Catalyzed-Ink Pot Life


ALPHA SC-7525 Cleaner
- IPA alternative
- High solvency
- Suitable for manual & immersive methods


KESTER 5252 Cleaner
- Quickly air dries
- Halogen-free formulation
- Non-ionic


ALPHA LONCO RF-800 FLUX
- Highly Active Low-Solids No-Clean Flux
- Low Non-Tacky Residue
- IPC J-STD-004 ROL0 Classification


ALPHA 857
- Foam and Spray Process Flexibility
- Controlled Specific-Gravity Flux Consistency
- Water-Washable Residues Without Rinse Aids


ALPHA K75I
- ALPHA K75-I provides a high-purity isopropyl alcohol and de-ionized water extract solution designed for ionic cleanliness testing in compliance with MIL-P-28809.
- ALPHA K99-I provides a dedicated isopropyl-alcohol-based make-up solution for restoring K75-I to the desired alcohol/water ratio.
- The complementary K75-I/K99-I system supports regular alcohol-percentage adjustment to maintain the accuracy of the ionic test instrument procedure.


ENTHONE AD2003
- Extended Marking-Ink Open Time
- Incremental 3 to 6% Addition
- In-Process Machine-Marking Adjustment


KESTER 182 Soldering Flux
- High-purity composition
- Meets IPC J-STD-002 and J-STD-003 requirements
- Excellent electrical reliability


ALPHA 90IA
- High-Activity Difficult-Metal Soldering
- Low-Temperature Light-Gauge Processing
- Defined Acid-Wash Residue Removal


ALPHA NR200
- Low-Residue Pin-Test Surface
- Foam, Spray, or Wave Fluxing
- High-SIR Tack-Free Surface


ENTHONE AD3002
- Two to Four Percent Flow Adjustment
- Crawling and Pinholing Control
- Gentle Post-Induction Mixing


KESTER 5744 Solder Saver
- Effectively removes dross
- Low-fuming and remains stable at soldering temperatures.
- Can be easily skimmed off the pot after use.


KESTER RF771 Rework Flux
- High thermal stability
- Leaves bright & shiny solder joints post-reflow
- Classified as ORM0 per J-STD-004


KESTER 958 Soldering Flux
- Excellent for bare copper applications
- Conformal coating compatible
- Improves soldering performace


ALPHA CVP 520
- Low-Temperature Reflow for Sensitive Assemblies
- Extended Eight-Hour Stencil Life
- Configurable Alloy and Powder Selection


ALPHA NR330
- VOC-Free Water-Based Processing
- Low Bridging and Solder Balls
- Non-Tacky Pin-Testable Residue


ENTHONE B13/28
- Accelerated Three-Day Ambient Cure
- One-Hour Processing Window
- Nonconductive Black Ink Compatibility


KESTER 186 Soldering Flux
- Approved under MIL-F-14256 as Rosin Mildly Activated.
- High thermal stability
- Excellent electrical reliability


KESTER 2166-BN Soldering Flux
- Halide-free formulation
- Superior surface insulation resistance
- Easy residue removal


ELECTROLUBE TCOR
- 1.8 W/(m K) Thermal Conductivity
- One-Component 100% Solids Non-Slump RTV
- -50 to 230 deg C Operating Range


ENTHONE B3
- Four-Hour Ink Pot Life
- Controlled Heat-Cure Processing
- Faster Cure at Higher Temperature


KESTER 951 Soldering Flux
- Zero-halogen, non-rosin formula
- High Surface Insulation Resistance (SIR)
- Minimizes defects


KESTER 186 Flux-Pen
- High thermal stability
- Improves soldering performance
- ROL1 per J-STD-004 & J-STD-004B


KESTER TSF-8808
- DI-Water-Cleanable Post-Reflow Residues
- Multi-Alloy Air-or-Nitrogen Reflow
- ORH0 Low-Volatility Soldering Flux


ENTHONE M Series
- Five-Method Permanent Marking
- One to 24-Hour Pot-Life Options
- Humidity-Conditioned Electrical Insulation


KESTER 977 Soldering Flux
- Biodegradable at pH ≥ 2.0
- Compatible with most solder masks and laminates
- Does not degrade SIR


KESTER 951 Flux-Pen
- Improves soldering performance
- Non-corrosive tack-free residue
- ORL0 per J-STD-004


ALPHA 100
- Non-Activated Type R Flux
- IPC J-STD-004 ROL0 Classification
- Extended 1,080-Day Shelf Life


KESTER 979 Solder Flux
- Chemically compatible with most solder mask & laminates
- Does not degrade SIR
- Bellcore GR-78 Compliant


KESTER 952-D6 Flux-Pen
- Residues almost colorless
- Improves soldering performance
- Reduced odor


ALPHA 2110
- Aqueous Rosin Residue Removal
- Multiple Cleaning Equipment Formats
- Stable Silicone-Free Wash Solution


ALPHA EF6000
- Low-Residue Rosin-Free No-Clean Flux
- Broad Lead-Free and Tin-Lead Window
- Reduced Solder-Ball and Bridging Tendency


ALPHA SLS65
- Thermally Stable Bridge Control
- Low Solder-Ball Tendency
- Foam, Wave, or Spray Application


KESTER NF372-TB Soldering Flux
- Provides good solderability at atmospheric temperature
- Zero-halogen & low solids formulation
- Safe for rework


KESTER 2331-ZX Flux-Pen
- High activity
- Chemically compatible with most masks and laminates
- Neutral pH chemistry


ALPHA EF-8800HF No Clean Flux
- Robust soldering performance
- Evenly spread, tack free residue
- Halide-free


ALPHA 3355-11
- VOC-Free Water-Soluble Fluxing
- Flexible Multi-Method Application
- Thorough Water-Residue Removal


ALPHA SLS65C
- Low-solids, no-clean flux formulated to reduce solder balling and solder bridging in wave and chip-wave soldering.
- Very low level of non-tacky residue supports pin testing while allowing residues to remain on the board without cleaning.
- Supports foam, wave, and spray application methods with documented Bellcore and IPC electrical test performance.


KESTER 985M Soldering Flux
- Low-solid & halide-free
- No-clean flux
- Improves soldering performance


KESTER TSF-6852 Tacky Soldering Flux
- 8-hour stencil life
- Leaves bright and shiny joints
- ORH1 per J-STD-004


ALPHA SM-110 Solvent Cleaner
- High solvency
- High flux loading capacity
- Non-corrosive


ALPHA SM351F
- Fast-Wetting Foam and Wave Flux
- Tack-Free Pin-Testable Residue
- Halide-Free Low-Solids Formulation


KESTER 5252M Cleaner
- Quickly air dries
- Halogen-free formulation
- Non-ionic


KESTER TSF-6522RH Tacky Soldering Flux
- High tack value
- Long tack life
- Can reflow in air or nitrogen


ALPHA PoP707 Lead-Free No-Clean Solder Paste
- Fine particle dispersion (<10 µm)
- ROL0 per IPC J‑STD‑004
- Outstanding SIR performance


ALPHA 425
- Controlled Flux Property Restoration
- Specific-Gravity Maintenance Support
- Long-Interval Process Inventory


ALPHA CVP-390
- Long stencil life
- Wide reflow profile window
- Excellent coalescence and wetting performance


ALPHA 3355-HB
- Broad Conveyor Preheat Window
- Multi-Method Flux Application
- Defined Hot-Water Cleaning Process


ALPHA CVP-390V Solder Paste
- Superior electrochemical reliability
- Wide process window
- Reliable post reflows flux residue


ALPHA 611F
- Low-Pressure Fine-Foam Control
- Stable Continuous-Aeration Performance
- Defined Daily Flux Maintenance


ALPHA OM-535
- Enables elimination of a second or third reflow cycle
- 8+ Hour stencil life
- Compatible with all commonly used Pb-free surface finishes


ALPHA 615-25
- Lower-Solids Surface-Mount Selection
- Flexible Foam-or-Spray Processing
- Defined Flux-Control Window


ALPHA OM340 Solder Paste
- Available in different alloys
- Maximizes reflow yield for Pb-free processing
- Excellent print consistency


ALPHA EF-12000
- High-Solids Residue for No-Clean Processing
- Spray Foam or Wave Process Flexibility
- Bridging-Resistant Hole-Fill Performance


ALPHA EF-2210
- Low-Solids Residue for Legacy Processing
- OSP Wave and Selective Soldering
- Defined EF-2100 Replacement Path


ALPHA OM550 Solder Paste
- Low reflow peak temperature
- Reduction of warpage up to 99%
- Long stencil life


ALPHA EF-6100-R
- Low-solids, alcohol-based no-clean rework flux supporting both lead-free and tin-lead soldering with fast wetting and a wide thermal process window.
- Very low levels of non-tacky residue help minimize interference with pin testing while supporting no-clean processing.
- ORL0 classification backed by documented IPC J-STD-004A/J-STD-004B SIR, Bellcore SIR, electromigration, and corrosion test results.


ALPHA EF-6100P
- Broad Lead-Free Process Window
- Reduced Bridging and Solder Balls
- Low-Residue Pin-Test Surface


ALPHA EF-8000
- Greater Than 96% Hole Fill
- Low-Bridging Connector Soldering
- Spray or Foam Application


ALPHA RMA390
- Wide reflow profile window supporting air and nitrogen reflow with straight-ramp or soak profiles up to 300 °C.
- ROL0, halide-free rosin-based paste flux whose post-reflow residue is suitable to remain on the circuit board without cleaning.
- Flexible application by screen printing, pin transfer, doctor blade, dip coating, or dispensing, with documented SIR and electromigration performance.


ALPHA UP-78 Solder Paste
- Stable Tack Across Production Shifts
- Clear, Colorless, Penetrable Post-Reflow Residue
- Standard and Fine-Pitch Stencil Printing


ALPHA EF2202
- VOC-Free No-Clean Legacy Process Reference
- Historical Wave-Solder Process Fit
- Direct EF-2100 Replacement Path


ALPHA WS609
- Four-Hour Stencil Life
- Complete Water-Cleanable Residue Removal
- Type 3 to 5 Powders


ALPHA EF6100
- Alloy-Specific Wave Process Control
- Low-Solids Pin-Testable Residue
- High-Reliability No-Clean Soldering


ALPHA WS619
- 0.008-Inch Fine-Pitch Printing
- Over Four Hours Stencil Life
- Completely Water-Soluble Flux


ALPHA HT-130DM
- Non-Sag High-Speed Dispensing
- Fast 80-Second Heat Cure
- High-Resistance Electrical Insulation


ALPHA WS809
- Print Speeds From 1 to 6 Inches
- Eight-Hour Stencil Life
- Water-Cleanable After Two Reflows


ALPHA WS826
- Eight-Hour High-Humidity Stencil Life
- Air or Nitrogen Reflow
- Zero-Halogen Water-Soluble Flux


ALPHA SACX Plus 0307
- Low dross formation
- Excellent mechanical reliability
- Made with Vaculoy technology


CNP CVP390V
- 170 um Fine-Feature Coalescence
- Over Eight-Hour Stencil Life
- Air or Nitrogen Reflow


ALPHA SACX0307
- 217 to 228 deg C Melting Range
- Low-Dross Vaculoy Processing
- Bar, Ingot, or Wire Supply


CNP OM338PT
- Fine-feature solder paste with demonstrated full alloy coalescence on circular deposits as small as 0.225 mm using a 0.100 mm stencil.
- Supports print speeds up to 150 mm/s with an 8-hour stencil life and is formulated for increased in-circuit pin-test yields.
- ROL0, halogen-free no-clean formulation with IPC-7095 Class 3 voiding performance and documented electrical reliability results.


ALPHA SACX0807
- Low-silver lead-free solder alloy designed to provide soldering and reliability performance similar to higher-silver ALPHA SAC alloys while reducing material cost versus SAC305.
- Low dross rate, low copper erosion rate, and low surface tension support alloy utilization, fast wetting, high wetting force, and excellent hole fill.
- Suitable for lead-free wave and selective soldering across single- and double-sided boards, including assemblies with OSP pad finishes exposed to prior reflow excursions.


CNP OM338T
- Ultra-fine feature solder paste supporting full alloy coalescence on circular dimensions as small as 0.25 mm with a 0.100 mm stencil.
- High-throughput printing at speeds up to 200 mm/s with greater than 8-hour stencil life at 50% RH and 23 °C.
- ROL0, halide-free no-clean formulation with IPC-7095 Class III voiding performance and documented electrical reliability.


ALPHA SM42-120P
- One-component, fast-curing epoxy surface mount adhesive designed for both screen printing and dispensing.
- Non-sagging formulation with documented excellent adhesion, thermal resistance, and workability.
- Cured material provides a Tg of 110 +/- 10 °C and insulation resistance greater than 1 x 10^12 ohms after 96 hours at 85 °C/85% RH.


ALPHA SM42-1311
- High-Speed Room-Temperature Dispensing
- 80-Second Cure at 150 deg C
- Non-Sagging Epoxy Paste


CNP OM340
- Fine-Feature High-Speed Printing
- Eight-Hour Stencil Life
- Air or Nitrogen Reflow


CNP OM350
- Fine-feature no-clean solder paste with demonstrated Pin-in-Paste performance and robust solderability across OSP-Cu, Immersion Ag, Immersion Sn, ENIG, and lead-free HASL finishes.
- Greater than 6-hour stencil life at 25 °C with stable storage and handling performance up to 30 °C for 21 days.
- Halide-free ROL0 formulation with IPC Class III voiding performance and documented SIR and electromigration reliability results.


ALPHA Vaculoy SAC305 Solder Bar
- Fast wetting
- Excellent solderability
- Very good drainage


CNP OM362
- Ultra-Low BTC Voiding
- Eight-Hour Print Stability
- Fine-Pitch SIR Performance


ALPHA WS362
- High-activity, 25% solids water-soluble flux designed for densely packed assemblies and multilayer boards requiring relatively high preheat temperatures.
- Highly water-soluble post-solder residues support effective cleaning for high ionic cleanliness and surface insulation resistance.
- Halide-free formulation with rapid wetting and support for foam, spray, or wave application techniques.


CNP OM5100
- Low-Residue No-Clean Processing
- First-Pass Assembly Yield Support
- Configurable SMT Process Fit


ALPHA WS600
- Three Application-Specific Viscosity Options
- Eight-Hour Stencil Life
- Water-Soluble Halide-Free Chemistry


CNP OM5300
- Mixed-Technology SMT Soldering
- No-Clean Tin-Lead Processing
- Configuration-Controlled Reflow Fit


CNP OM565
- Low-Temperature 175 deg C Reflow
- 01005 Fine-Feature Printability
- Eight-Hour Stencil Stability


KESTER EM808 Solder Paste
- Excellent solderability
- Print speed up to 150 mm/sec
- Excellent anti-slumping features


KESTER EM828 Solder Paste
- Low-voiding
- Excellent wetting
- Long stencil life


KESTER EP256 Solder Paste
- Stable wetting behavior
- Excellent printing characteristics
- High activity on all substrates


Hi-Flo Solder Bar Sn63Pb37
- Reduced Wave-Soldering Bridging and Icicling
- Vaculoy Ultra-High-Purity Manufacturing
- Conventional or Inert-Atmosphere Wave Soldering


KESTER HM531
- Excellent anti-slump characteristics
- Minimal voiding under BGA components
- Great solderability


KESTER NP505-HR Solder Paste
- High reliability
- Exceptional print performance
- Zero-halogen formula


KESTER NP545 Solder Paste
- 0.50-Area-Ratio Fine-Feature Printing
- Zero-Halogen No-Clean Residue
- Air or Nitrogen Reflow Wetting


KESTER R520A Solder Paste
- Pb-free
- Stable tack life
- Consistent printing


KESTER R562 Solder Paste
- Reduces BGA voiding
- 12-hour stencil life
- Consistent printing


KESTER 1429
- VOC-Free Water-Based Fluxing
- Self-Neutralizing Post-Solder Residue
- Water-Only Residue Removal


KESTER 1544
- Activated Rosin Oxide Removal
- Fast Wetting and Capillary Flow
- Non-Conductive Post-Solder Residue


KESTER 186-18
- High-Preheat Thermal Stability
- RMA-Style Flux Activity
- Low-Corrosion No-Clean Residue


Kester K100LD Lead-Free Solder Wire
- Eutectic Sn/Cu alloy
- Controlled metallic dopants
- Refined grain structure


SACX Plus 0807
- Low-Silver, Lead-Free Alloy
- 216 to 225 deg C Solidus-Liquidus Range
- Vaculoy Oxide-Reduction Processing


SnCX Plus 07
- Silver-Free Lead-Free Wave-Soldering Alloy
- Reduced Copper Dissolution at High Temperature
- Vaculoy Low-Dross Fast-Wetting Processing


ALPHA AutoClean 40 Electronic Cleaner
- Ready-to-Use Aqueous Cleaning
- Immersion, Ultrasonic, or Manual Cleaning
- Non-Flammable Water-Based Formulation































