New Original Metcal Sttc-138 Straight Chisel Soldering Iron Tip

• Lead Free or Not: No
• Material: Stainless Steel
• Color: Silver
• Model NO.: STTC-138
• Network Type: AC
• Network Frequency: 50/60 Hz
• Net Weight: 0.26kg
• Operating Altitude: 2000m
• Transport Package: Box
• Specification: STTC-138
• Trademark: METCAL
• Origin: USA
• HS Code: 8536200000
• Production Capacity: 5000/Month
• Package Size: 20.00cm * 1.00cm * 1.00cm
• Package Gross Weight: 0.100kg

Product Description

1.Product Name
New Original METCAL STTC-138 Straight Chisel Soldering Iron Tip

2.Product Brand 

The METCAL STTC-138 is a straight chisel-style soldering iron tip designed for use with METCAL's SmartHeat® MX series and other compatible advanced soldering systems. Engineered for precision hand soldering and rework, this tip features a flat, broad working surface ideal for applications requiring efficient heat transfer to large pads, ground planes, or through-hole leads. Utilizing METCAL's patented SmartHeat technology, the STTC-138 delivers instantaneous thermal response without temperature overshoot, ensuring consistent solder joint quality while minimizing thermal stress on sensitive components.

Main Features

• Straight chisel geometry: Flat, rectangular tip face provides maximum contact area for rapid heat transfer.
• SmartHeat compatibility: Works exclusively with METCAL's power-efficient, temperature-regulated soldering systems.
• High thermal conductivity: Copper core with iron plating ensures fast heating and excellent wetting performance.
• Durable construction: Iron-clad surface resists oxidation and erosion from repeated soldering cycles.
• Optimized for lead-free and tin-lead solder: Performs reliably across modern solder alloys.
• Precision-machined tip: Consistent dimensions ensure repeatable results in production and rework environments.

Technical Specifications

 

 

Parameter	Specification
Model Number	STTC-138
Tip Style	Straight Chisel
Tip Width	1.6 mm
Tip Thickness	0.8 mm
Compatible Systems	METCAL MX-500, MX-5200, CV-5000, and other SmartHeat platforms
Operating Temperature Range	200°C to 450°C (system-controlled)
Core Material	High-purity copper
Plating	Iron-clad surface with nickel barrier layer
Solder Compatibility	Tin-lead, lead-free (SAC305, etc.), and specialty alloys
Recommended Applications	Through-hole soldering, large pad tinning, grounding tabs, chassis work

Physical Dimensions

• Tip Length (working end): Approx. 12 mm
• Shank Diameter: 3.0 mm (standard METCAL cartridge interface)
• Overall Cartridge Length: 76 mm (including connector)

Weight

Approximately 15 grams

Additional Notes

The STTC-138 is not a standalone tool but a replaceable cartridge that integrates directly into METCAL's handpiece system. The SmartHeat technology uses a unique impedance-based control method: when the tip reaches the selected temperature, the system automatically reduces power to maintain equilibrium-eliminating traditional temperature overshoot and enabling true "instant-on" performance. The 1.6 mm chisel face is particularly effective for soldering connectors, terminal blocks, and multi-layer PCBs where thermal mass is high. To maximize tip life, users should avoid abrasive cleaning methods and always apply a thin layer of solder before shutdown. This tip is widely used in electronics manufacturing, aerospace assembly, and high-reliability rework stations where process consistency and joint integrity are critical.

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8.FQA
1.Are you a manufacturer or trader?
We are trader, distribution wholesale all kinds of brands.
2.Have any discounts if make a bulk order?
Yes, we can provide some discounts according to your quantity.
3.Can I get samples before place a order?
Yes, we need to charge samples fee and shipping cost.
4.How long is your delivery time?
Usually 3-5 days after received the payment.
5.What is terms of payments do you accept?
We accept USD,EUR and CNY by T/T,Wechat,Alipay, also can by Payoneer, Western Union.
6.What is the warranty preiod of the products?
1-3 year warranty.

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