Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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AIM NC273LT is a no-clean, low-temperature solder paste designed for bismuth alloys. It features an advanced activator system that improves wetting on RoHS-compliant surface finishes. This halogen-free paste offers excellent stencil life (>8 hours), minimal solder balling, and superior wetting. With a peak reflow temperature as low as 170°C-185°C, it is an ideal replacement for lead-free applications where thermal exposure is a concern.
| Condition | Shelf Life | Temperature |
|---|---|---|
| Sealed, Frozen | 6 months | < 0°C (32°F) |
| Sealed, Refrigerated | 4 months | 0°C – 12°C (32°F-55°F) |
| Sealed, Unrefrigerated | 2 weeks | < 25°C (77°F) |
| Parameter | Recommended Setting |
|---|---|
| Squeegee Pressure | 0.9 – 1.5 lbs/inch of blade |
| Squeegee Speed | 0.5 – 6 inches/second |
| Snap-off Distance | On Contact (0.00 mm) |
| PCB Separation Distance | 0.75 – 2.0 mm |
| PCB Separation Speed | 3 – 20 mm/second |
| Phase | Temperature / Time |
|---|---|
| Rate of Rise | 1-3°C/sec max |
| Ramp to 100°C | ≤ 75 sec |
| Progress to 140°C | 30-60 sec |
| Time to Peak (170-185°C) | 45-75 sec |
| Time Above 138°C | 50-80 sec (recommended: 45±15 sec) |
| Cooldown Rate | ≤ 4°C/sec |
| Total Time to Spike | 2.75 – 3.5 min |
| Property | Test Method | Result |
|---|---|---|
| Flux Classification (IPC) | J-STD-004 / J-STD-004B | ROL0 / ROL1 |
| Copper Mirror Test | J-STD-004B 3.4.1.1 | Low |
| Corrosion Test | J-STD-004B 3.4.1.2 | Pass |
| Halide Content (Br/Cl) | EN14582 | <900ppm Br/Cl, <1500ppm Combined |
| Surface Insulation Resistance | J-STD-004B 3.4.1.4 | Pass |
| Viscosity (Print Formula) | J-STD-005A 3.5.1 | 750kcps Typical |
| Viscosity (Dispense Formula) | J-STD-005A 3.5.1 | 400kcps Typical |
| Tack Strength | J-STD-005A 3.8 | 55.3 gf Typical |
| Solder Ball Test | J-STD-005A 3.7 | Pass |
| Wetting Test | J-STD-005A 3.9 | Pass |
| Slump Test | J-STD-005A 3.6 | Pass |
| Acid Value | J-STD-004B 3.4.2.2 | 159.4 mg KOH/g flux |
| Flux Specific Gravity | ASTM D-1298 | 0.98 Typical |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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