SJ6004VS2TP

Overview

The Littelfuse SJ6004VS2TP is a high-temperature sensitive silicon-controlled rectifier (SCR) from the SJxx04xSx series, housed in a TO-251AA (VPAK) through-hole package. It supports an RMS on-state current of 4 A and offers voltage ratings of 400 V or 600 V. The device features a low gate trigger current of 20 μA maximum at approximately 1.5 V. Key electrical parameters include a peak non-repetitive surge current of 30 A at 60 Hz, a critical rate of rise of on-state current (di/dt) of 50 A/μs, and a junction-to-case thermal resistance of 1.5 °C/W. It operates within a temperature range of -40°C to 150°C.

Feature Summary

• Sensitive gate triggering with a maximum DC gate trigger current of 200 μA and a typical value of 20 μA for reliable activation.
• High-temperature capability with a maximum operating junction temperature of 150°C and storage range down to -40°C.
• Robust surge handling with a peak non-repetitive surge current rating of 30 A for single half-cycles at 60 Hz.
• Compliance with environmental standards including RoHS and halogen-free requirements.

Applications

• Capacitive discharge ignition systems for motorcycle engines and portable generators
• Phase control applications in heating elements and motor speed controls
• Strobe lights and pneumatic nailers
• Generic rectifiers and battery voltage regulators

Procurement Notes

Verify the specific voltage rating suffix when ordering, as the 'xx' in the part number denotes either 400 V or 600 V blocking capability. Confirm the package type matches the design, as this specific part uses the TO-251AA form factor. Ensure that the gate sensitivity requirements align with the 20 μA typical trigger specification for the chosen application circuit.

Selection Notes

Select this component for uni-directional switching applications requiring high thermal stability up to 150°C. Consider the 4 A RMS current limit and ensure adequate heat sinking to maintain case temperatures below 130°C under load. Verify that the circuit's dv/dt and di/dt stresses remain within the specified limits of 45 V/μs and 50 A/μs respectively to prevent false triggering or device failure.

Part Context

This SCR belongs to the SJxx04xSx series of 4 Amp High Temperature Sensitive SCRs manufactured by Littelfuse. The series is designed for robust performance in demanding environments, offering both through-hole (TO-251) and surface-mount (TO-252) options. The 'S2' designation indicates the sensitive gate variant with a low trigger current requirement.

Replacement Considerations

Direct substitutes within the same family include SJ6004DS2TP (TO-252 package) or SJ4004VS2TP (400V rating). Cross-brand replacements must match the 4 A current rating, 600 V blocking voltage, TO-251 package, and sensitive gate characteristics.