What is the ratio of lead? And what is the suggested melt temperature?

The old days back in 1960's was 60/40 tin/lead rosin core called for electronics. You new solder is liquid is 63/37 tin/lead. I had to look this up my self. I hope this helps you.

Where do i purchase smaller tips for this?

So an Amazon search on "Dispensing Needle 1 - Blunt Tip Luer Lock" https://smile.amazon.com/s?k=Dispensing+Needle+1+-+Blunt+Tip+Luer+Lock&crid=Z897DQLHIWFP&sprefix=dispensing+needle+1+-+blunt+tip+luer+lock%2Caps%2C113&ref=nb_sb_noss_2

Is this used like typical coiled electronics solder, but with more control of where it goes? Just touch with iron to heat?

Yes and no. This is really made for soldering surface mount soldering with either a heat gun or a soldering iron. I wouldn’t recommend it for through hole soldering. However its great for surface mount.

What is the inner diameter of the dispensing tip?

I don't know the tips exact size, but it is very small and only dispenses a very small amount of material when used.

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Chip Quik SMD291AX Rework Solder Paste 5cc 63/37

Product ID: 260635746

🧴5cc precision syringe for controlled application

⚙️63/37 SnPb alloy for reliable conductivity

🛠️Compact design fits any workspace

COP 113376

Duties & taxes included

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Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Master your rework game with precision and ease!

COMPACT PORTABLE - Small footprint makes it perfect for on-the-go repairs and tight spaces
DURABLE RELIABLE - Crafted with premium materials for consistent performance every time
PRECISION ALLOY MIX - 63/37 SnPb ratio ensures optimal solder flow and strong joints
CONTROLLED DISPENSING - 5cc syringe delivers exact amounts, minimizing waste and mess
INDUSTRY STANDARD EXCELLENCE - Meets prevailing industry specs for professional-grade rework

Chip Quik SMD291AX Rework Solder Paste is a 5cc syringe of 63/37 tin-lead alloy paste designed for precise, durable soldering. Trusted by professionals, it meets industry standards and offers controlled application in a compact form factor, making it ideal for efficient surface-mount device repairs.

Specifications

ASIN	B0186IM0P0
ASIN	B0186IM0P0
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#64,000 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #156 in Solder, Solder Fluxes & Pastes
Customer Reviews	4.6 4.6 out of 5 stars (703)
Customer reviews	4.6 4.6 out of 5 stars (703)
Date First Available	23 November 2015
Date First Available	23 November 2015
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	0.28 g
Item model number	SMD291AX
Item model number	SMD291AX
Manufacturer	Chip Quik
Manufacturer	Chip Quik
Package Dimensions	10.16 x 5.84 x 2.03 cm; 0.28 g
Package Dimensions	10.16 x 5.84 x 2.03 cm; 0.28 g
Part number	SMD291AX

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