2SA1585STPQ

Single Bipolar Transistors Overview

The Rohm Semiconductor 2SA1585STPQ is a PNP silicon epitaxial planar transistor housed in the SPT (SC-72) through-hole package. It features a collector-emitter voltage of -20V and a continuous collector current rating of -3A, with a maximum power dissipation of 0.4W at 25°C. The device offers a typical collector-emitter saturation voltage of -0.2V at an IC/IB ratio of -2A/-0.1A. DC current gain ranges from 120 to 390 depending on the specific grade, and the transition frequency is rated at 35MHz.

Single Bipolar Transistors Feature Summary

• Low collector-emitter saturation voltage for efficient switching performance
• High continuous collector current capability suitable for power applications
• Excellent DC current gain characteristics across operating ranges

Single Bipolar Transistors Applications

• General purpose amplification circuits
• Switching applications requiring low saturation voltage
• Complementary pairing with NPN transistors such as the 2SD2150 or 2SC4115S

Single Bipolar Transistors Procurement Notes

Verify the exact suffix against the manufacturer's current datasheet to confirm pinout orientation and hFE grading. Confirm RoHS compliance status and check for obsolescence notices, as component availability may vary by distributor. Ensure the ordering code matches the required packaging quantity and tape-and-reel specifications if applicable.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with high current handling (-3A) and low saturation voltage is required in a through-hole SPT package. Consider the complementary relationship with specific NPN counterparts for push-pull configurations. Evaluate thermal management requirements given the 0.4W power dissipation limit and ensure the operating junction temperature remains within the specified range.

Single Bipolar Transistors Part Context

This part belongs to ROHM's general-purpose transistor lineup designed for standard electronic equipment. It utilizes an epitaxial planar structure for reliability. The device is intended for use in audio-visual, office automation, and communication devices, but requires consultation for high-reliability safety applications.

Single Bipolar Transistors Replacement Considerations

The 2SB1424 is documented as a complementary pair partner rather than a direct substitute. Verify pinout compatibility and electrical parameters before substituting with other PNP transistors in the SC-72 package.

Single Bipolar Transistors FAQ

What is the typical collector-emitter saturation voltage?

The typical VCE(sat) is -0.2V when measured at a collector current of -2A and a base current of -0.1A.

Which NPN transistors complement this device?

The datasheet specifies that this transistor complements the 2SD2150 and 2SC4115S NPN transistors.

What is the maximum collector current rating?

The absolute maximum continuous collector current (IC) is rated at -3A at an ambient temperature of 25°C.