Diodes Incorporated ZUMT717TA

Overview

ZUMT717TA from Diodes Incorporated is a PNP power switching transistor in SOT323 package, rated for -12V V_CEO, -1.25A continuous collector current, and 500mW power dissipation. It delivers low saturation voltage (V_CE(sat) < -215mV @ I_C = -1A) and 150mΩ equivalent on-resistance, enabling efficient negative supply line switching in portable electronics.

For engineers reviewing the ZUMT717TA datasheet, ZUMT717TA pinout, ZUMT717TA application, or ZUMT717TA equivalent, key selection criteria include its AEC-Q101 qualification, -12V breakdown rating, high h_FE up to 490 at low current, thermal resistance of 250°C/W on 25mm×25mm PCB, and complementary pairing with ZUMT617 NPN device.

Technical Context

This PNP bipolar junction transistor operates as a saturated switch in low-voltage DC-DC converter stages and load-switching circuits. Its design emphasizes fast switching (t_on = 50ns, t_off = 135ns) and stable gain across wide current range (h_FE = 300–490 at I_C = -10mA to -1.25A).

The device uses epitaxial planar construction with fully lead-free, halogen- and antimony-free "Green" packaging. Thermal performance is specified for two PCB mounting conditions: 325°C/W (10mm×8mm copper) and 250°C/W (25mm×25mm copper), supporting reliable operation from -55°C to +150°C.

Key Specifications

Pinout & Package

Package: SOT323 - surface-mount plastic package measuring 2.10 × 1.30 × 0.95 mm (L × W × H), UL 94V-0 rated, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP power switching transistor applications.

Compared with DMMT3906-7-F and BC807-25,215, ZUMT717TA uniquely combines AEC-Q101 qualification, -1.25A continuous rating, and sub-215mV saturation voltage in SOT323-making it optimal for space-constrained, high-reliability portable power switching.

Availability

ZUMT717TA is available at Aetrix Electronics and suitable for mobile phone supply line switching, camcorder motor drivers, negative boost converter switching, and mini disk player load switching requiring stable component supply and automotive-grade reliability.

Supply support for ZUMT717TA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.

ZUMT717TA belongs to the ZUMT series of high-reliability PNP/NPN switching transistors designed specifically for compact, high-efficiency portable power management in consumer and automotive electronics.

FAQ

What is the maximum safe operating temperature for ZUMT717TA?

The ZUMT717TA has an operating junction temperature range of -55°C to +150°C. Its thermal resistance is 250°C/W on a 25mm×25mm 1oz copper PCB, allowing 500mW dissipation at ambient temperatures up to +125°C before reaching the 150°C junction limit. Derating is required above +125°C ambient.

Does ZUMT717TA require a heatsink in typical applications?

No external heatsink is required for ZUMT717TA in standard SOT323 mounting. With R_θJA = 250°C/W on 25mm×25mm copper, it dissipates 500mW with only a 125°C rise above ambient-well within its 150°C T_J limit at room temperature. PCB copper area serves as sufficient thermal path.

How does the ZUMT717TA's hFE variation affect base drive design?

ZUMT717TA's h_FE ranges from 75–140 at I_C = -2A down to 300–490 at I_C = -10mA. For reliable saturation at -1.25A, design base current ≥ -100mA (h_FE min = 125), verified by V_CE(sat) ≤ -215mV in datasheet test condition.

Is ZUMT717TA pin-compatible with other SOT323 PNP transistors?

ZUMT717TA follows standard SOT323 pinout (Emitter-Base-Collector, left-to-right top view), matching industry convention. However, electrical parameters-including V_CEO, I_C, and V_CE(sat)-differ significantly from generic SOT323 PNP devices; direct substitution requires validation of switching speed, gain, and thermal performance in the target circuit.