MMBTH81_D87Z

Overview

The MMBTH81_D87Z is a PNP RF transistor manufactured by onsemi, designed for general RF amplifier and mixer applications up to 250 MHz. It operates with collector currents ranging from 1.0 mA to 30 mA. Key electrical parameters include a Collector-Emitter Breakdown Voltage of 20 V at 1.0 mA, a DC Current Gain (hFE) of 60 at 5.0 mA, and a Current Gain-Bandwidth Product (fT) of 600 MHz at 5.0 mA. The device features low capacitance values, specifically 0.85 pF for Ccb and 0.65 pF for Cce. It is housed in an SOT-23 package, corresponding to the D87Z ordering suffix.

Feature Summary

• Optimized for RF amplifier and mixer circuits operating up to 250 MHz
• Low input and output capacitance for high-frequency signal integrity
• Suitable for collector current ranges between 1.0 mA and 30 mA

Applications

• General RF amplification stages
• RF mixer circuits
• High-frequency signal processing modules

Procurement Notes

Verify the specific ordering suffix D87Z corresponds to the SOT-23 tape and reel packaging configuration. Confirm that the component source aligns with onsemi specifications, as historical manufacturing rights may involve legacy entities. Ensure the received parts match the final production status indicated in official documentation.

Selection Notes

Select this component when designing circuits requiring a PNP transistor with a 600 MHz transition frequency and low parasitic capacitance. The SOT-23 package is appropriate for space-constrained PCB layouts. Verify thermal dissipation requirements against the 225 mW limit in the SOT-23 package at ambient temperatures above 25°C.

Part Context

This part belongs to the MPSH81/MMBTH81 family of PNP RF transistors. The MMBTH81 designation typically indicates the surface-mount SOT-23 variant, while MPSH81 refers to the through-hole TO-92 version. The D87Z suffix specifies the standard SOT-23 tape and reel packaging option containing 3,000 units per 7-inch reel.

Replacement Considerations

Direct functional substitutes within the same family include the MPSH81 for through-hole applications. Cross-package replacements require verifying pinout compatibility between SOT-23 and alternative small-signal packages. Ensure replacement parts meet the 20 V breakdown voltage and 600 MHz fT specifications.