Chip Quik NC191LTA15 Low Temp Solder Paste 15g
- Sn42/Bi57/Ag1 lead-free alloy, melts at 137 C (279 F)
- T4 powder, 20 to 38 microns
- 86.75% metal by weight
- 15 g (5 cc) syringe
- RoHS 3 and REACH compliant
- Synthetic no-clean flux, ROL0
- Refrigerate at 3 to 8 C, do not freeze
Last refreshed Sep 28, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A lead-free low temperature solder paste in a small syringe with a no-clean synthetic flux. It must be kept cold and warmed before use, and the alloy melts at a low temperature, so check that it suits the application.
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ASIN: B096BM9P32Model: NC191LTACategory: Solder
Overview
Chip Quik formulates this Smooth Flow paste as a low temperature, lead-free alloy supplied in a syringe. A lower density flux vehicle gives better shear spread and improved flow during heating.
The reason to buy it is a lead-free, RoHS and REACH compliant paste that melts at a low temperature, with a no-clean flux. The limitation is the cold storage routine and the syringe quantity, which suits limited runs.
Who it's for
Lab, repair and small-run assembly users who need a lead-free paste with a low melting temperature are the match. Anyone who needs a high-melting alloy, or cannot refrigerate and temper the paste, should look elsewhere.
Pros and cons
- RoHS and REACH compliant
- Low melting temperature
- No-clean synthetic flux
- Halogen free per test method
- Needs refrigeration and warm-up before use
- Syringe quantity suits limited runs
Performance notes
Because the alloy melts at a low temperature, the parts see less heat during the joint. The flux vehicle is built for spread under shear and flow while heating, and the paste must warm to operating temperature before use. Stencil life shortens as humidity rises.
Specifications
| Brand | Chip Quik |
|---|---|
| Model | NC191LTA |
| Dimensions & fit | |
| Particle size | T4 (20 to 38 microns) |
| Size | 5 cc / 15 g syringe |
| Item weight | 1.16 ounces |
| Construction & materials | |
| Shelf life | Over 12 months refrigerated, over 6 months unrefrigerated |
| Other details | |
| Alloy ratio | Sn42/Bi57/Ag1 (lead-free) |
| Melting point | 137 C (279 F) |
| Flux type | Synthetic no-clean |
| Metal content | 86.75% by weight |
| Flux classification | ROL0 |
| Compliance | Lead-free, RoHS 3, REACH, halogen free (EN14582) |
| Stencil life | Over 8 hours at 20 to 50% RH, over 4 hours at 50 to 70% RH (22 to 28 C) |
| Storage | Refrigerate at 3 to 8 C (37 to 46 F), do not freeze |
Frequently asked questions
How do I store Chip Quik NC191LTA15 paste?
Refrigerate it at 3 to 8 C (37 to 46 F) and do not freeze it. Before use, allow 4 hours for it to reach 20 to 25 C (68 to 77 F).
Is Chip Quik NC191LTA15 a leaded paste?
No. It is a lead-free alloy, Sn42/Bi57/Ag1, listed as RoHS 3 and REACH compliant.
How long does Chip Quik NC191LTA15 last out of the refrigerator?
Shelf life is over 6 months unrefrigerated and over 12 months refrigerated, according to the listing.