PMBTA42DS,125

Overview

The PMBTA42DS is a high-voltage NPN/NPN double transistor housed in a small SOT457 (SC-74) TSOP6 surface-mounted device plastic package. It features two electrically isolated transistors within the compact footprint. Key electrical ratings include a collector-emitter voltage of 300 V and a continuous collector current of 100 mA per transistor, with a peak collector current capability of 200 mA for single pulses up to 1 ms. The device supports a junction temperature range from -65 °C to 150 °C.

Feature Summary

• High breakdown voltage rating suitable for demanding applications
• Two internally electrically isolated transistors
• Compact SOT457 surface-mounted package design

Applications

• Telecom line interface circuits
• CRT television systems
• Computer monitor drivers

Procurement Notes

Verify the specific ordering suffix against official Nexperia documentation to confirm packaging details and revision status. Ensure the component meets non-automotive qualification requirements as stated in the datasheet. Confirm pinout compatibility with the target PCB footprint before finalizing procurement orders.

Selection Notes

Select this component when high voltage isolation between two NPN channels is required in a minimal board space. The SOT457 package offers a smaller profile compared to traditional dual transistor packages. Verify thermal dissipation capabilities based on the specific PCB copper area and ambient temperature conditions.

Part Context

This part belongs to Nexperia's high-voltage transistor portfolio, designed for robust performance in communication and consumer electronics. It serves as a discrete solution for switching and amplification tasks where voltage isolation between channels is critical. The SOT457 package provides a cost-effective alternative to larger through-hole or standard SMD dual transistor configurations.

Replacement Considerations

Check for direct pin-compatible alternatives in the SOT457 package with similar 300 V ratings. Verify that any substitute maintains the 100 mA continuous current rating and electrical isolation characteristics. Ensure the replacement part matches the marking code if visual inspection is required during assembly.