SK625LDTP

Description：SCR 1.6KV 25A TO220AB
Series：-

SKU:6f7eb4f43880 Category: SCRs Brand: Littelfuse Inc.

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Product introduction

Product Detailed Parameters

Description：SCR 1.6KV 25A TO220AB
Series：-
Mfr：Littelfuse Inc.
Package：Tube
Voltage - Off State：1.6 kV
Voltage - Gate Trigger (Vgt) (Max)：1.5 V
Current - Gate Trigger (Igt) (Max)：35 mA
Current - Hold (Ih) (Max)：120 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)：250A, 300A
SCR Type：Standard Recovery
Operating Temperature：-40°C ~ 125°C (TJ)
Grade：-
Qualification：-
Mounting Type：Through Hole
Package / Case：TO-220-3
Supplier Device Package：TO-220AB
Voltage - On State (Vtm) (Max)：1.8 V
Current - On State (It (AV)) (Max)：16 A
Current - On State (It (RMS)) (Max)：25 A
Current - Off State (Max)：10 µA

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SK625LDTP

Overview

The Littelfuse SK625LDTP is a 25 Amp standard Silicon-Controlled Rectifier (SCR) housed in an electrically isolated TO-220L package. It features a maximum repetitive peak off-state and reverse voltage of 1600 V, with a non-repetitive peak surge current capability of 250 A at 50 Hz. The device has a maximum gate trigger current of 35 mA and a junction-to-case thermal resistance of 1.9 °C/W. Operating within a temperature range of -40°C to +125°C, it provides UL recognition for 2500V RMS isolation.

Feature Summary

Electrically isolated mounting tab designed for ease of heat sinking
RoHS compliant construction with glass passivated junctions
Standard phase control triggering requiring minimal gate potential

Applications

AC solid-state switches
Industrial power tools
Line rectification at 50/60Hz

Procurement Notes

Verify the specific ordering suffix 'TP' indicates tube packaging containing 1000 units per base quantity. Confirm that the 'LD' designation corresponds to the isolated TO-220L package variant rather than the non-isolated RD version. Ensure compliance requirements match the RoHS and UL file number E71639 listed in the official documentation.

Selection Notes

Select this component when high-voltage blocking up to 1600 V is required alongside electrical isolation between the heatsink and circuit ground. The 35 mA gate sensitivity allows direct interfacing with standard logic or microprocessor outputs without excessive drive current. Verify that the 1.9 °C/W thermal resistance meets the system's continuous dissipation needs at the specified case temperature.

Part Context

This part belongs to the SK625xD series of 25 Amp Standard SCRs manufactured by Littelfuse. The series includes both isolated (LD) and non-isolated (RD) package options. These devices are engineered as unidirectional switches specifically optimized for phase control applications such as heating elements and motor speed regulation circuits.