ALPHA RMA390
Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide
Main features
- 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.
Product Description
ALPHA RMA-390-DH6 Paste Flux is a rosin-based paste flux designed for surface mount and other demanding electronic assembly applications. Its activator system is formulated to penetrate moderately tarnished surfaces, while the post-reflow residue is suitable to remain on the circuit board without cleaning. The flux supports air and nitrogen reflow using straight-ramp or soak profiles up to 300 °C and provides documented electrical reliability performance. ALPHA RMA-390-DH6 is classified ROL0 according to IPC J-STD-004 and can be applied by screen printing, pin transfer, doctor blade, dip coating, or dispensing.
Key features
- Wide reflow profile window: Supports straight-ramp or soak profiles in both air and nitrogen reflow up to 300 °C.
- No-clean residue capability: Post-reflow residue is suitable to remain on the circuit board without cleaning.
- ROL0, halide-free formulation: Classified ROL0 per IPC J-STD-004, with halide-free status based on formulation.
- Flexible application methods: Supports screen printing, pin transfer, doctor blade, dip coating, and dispensing.
Applications / Suitable for
- Surface mount electronic assembly
- High-density PWB assemblies
- Applications involving moderately tarnished soldering surfaces
- Screen printing, pin transfer, doctor blade, dip coating, and dispensing processes
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Selected physical and chemical properties of ALPHA RMA-390-DH6 Paste Flux in its as-supplied state.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Smooth, amber paste | - | As supplied |
| Viscosity | 110 to 400 | Poise | Typical; Malcom Viscometer, 5 rpm at 25 °C |
| Fineness of grind | <10 | µm | Physical property |
| Activity level | ROL0 | - | IPC J-STD-004 |
| Halide content | Halide-free | - | Based on formulation |
After-processing / final-state properties
Selected corrosion and electrical test results for ALPHA RMA-390-DH6 under the stated test conditions.
| Property | Result | Method / condition |
|---|---|---|
| Copper mirror corrosion | Pass | IPC J-STD-004 |
| SIR | Pass, 2.5 x 1011 ohms | Bellcore GR78-CORE; 96 hours at 35 °C/85% RH; pass ≥1 x 1011 ohms |
| Electromigration | Pass, 2.2 x 1010 ohms | Bellcore GR78-CORE; 500 hours at 65 °C/85% RH, 10 V; pass = final > initial/10 |
| IPC SIR | Pass, 1.1 x 109 ohms | IPC J-STD-004A; 7 days at 85 °C/85% RH; pass >108 ohms |
| HP electrochemical migration | Pass | HP ECM; 28 days at 50 °C/90% RH, 10 V |
