Diodes Incorporated ZXTP01500BGQTA

Overview

ZXTP01500BGQTA from Diodes Incorporated is a 500V PNP high-performance bipolar junction transistor in SOT223 package, rated for -150mA continuous collector current and -500V collector-emitter breakdown voltage, with V_CE(SAT) ≤ -500 mV at I_C = -50 mA / I_B = -10 mA, used in high-voltage industrial power supply switching and flyback snubber circuits.

For engineers reviewing the ZXTP01500BGQTA datasheet, ZXTP01500BGQTA pinout, ZXTP01500BGQTA application, or ZXTP01500BGQTA equivalent, key selection criteria include verified -500V BV_CEO, AEC-Q101 qualification for automotive-grade reliability, thermal resistance of 41.7°C/W on 50mm × 50mm copper, and SOT223 lead-frame layout compatibility with high-voltage creepage requirements.

Technical Context

This PNP transistor operates in linear and switching modes with guaranteed h_FE ≥ 80 at I_C = -50 mA and V_CE = -10 V, supporting stable current amplification under high-voltage bias. Its f_T of 60 MHz enables use in medium-frequency switching applications up to several hundred kHz.

The device features low output capacitance (C_OBO = 8 pF at V_CB = -20 V), fast turn-on (t_ON = 110 ns) and turn-off (t_OFF = 1.5 µs) times under pulsed 100V/50mA conditions, and ESD robustness (HBM = 4 kV, MM = 400 V), making it suitable for transient-prone industrial control interfaces.

Key Specifications

Pinout & Package

Package: SOT223 - molded plastic case with exposed collector pad (pin 1), standard footprint per Diodes Inc. outline drawing SOT223, UL 94V-0 rated, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage PNP transistor applications.

Compared with ZXTP2012GQTA and MJD2955T4G, ZXTP01500BGQTA uniquely balances 500 V capability, SMT compatibility, and automotive qualification-enabling compact, high-reliability high-voltage switching where voltage rating, footprint, and qualification are jointly critical.

Availability

ZXTP01500BGQTA is available at Aetrix Electronics and suitable for industrial power supplies, automotive HVAC controllers, and LED driver snubbers requiring stable component supply with long-term lifecycle assurance.

Supply support for ZXTP01500BGQTA 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, specializing in high-reliability components for automotive, industrial, and computing markets since 1960.

ZXTP01500BGQTA belongs to Diodes' high-voltage bipolar transistor product line, engineered specifically for ruggedized switching in >400 V DC applications where AEC-Q101 reliability and SOT223 thermal efficiency are mandatory.

FAQ

What is the maximum allowable continuous power dissipation for ZXTP01500BGQTA on a standard PCB?

At T_A = 25°C with 50 mm × 50 mm 2 oz copper, the device supports 3 W continuous power dissipation (R_θJA = 41.7°C/W). Derating begins linearly above 25°C ambient, reaching zero dissipation at 150°C junction temperature. Mounting on smaller copper areas reduces this limit to 2 W (R_θJA = 62.5°C/W).

Is ZXTP01500BGQTA suitable for linear amplifier applications?

Yes - its h_FE of 80–300 at I_C = -50 mA and f_T of 60 MHz support stable Class-A or AB operation up to ~100 kHz. However, V_CE(SAT) increases significantly above -100 mA, so linear use is recommended below 100 mA to maintain thermal stability and gain consistency.

How does the SOT223 package ensure high-voltage isolation in PCB layout?

The SOT223 footprint provides ≥2.3 mm creepage between emitter and collector pads per Diodes' recommended pad layout. When combined with ≥3.5 mm clearance and conformal coating, it meets IPC-2221B requirements for 500 V working voltage. The exposed collector pad must not overlap inner-layer traces.

Does ZXTP01500BGQTA require external base current limiting in switching mode?

Yes - base current must be limited to avoid exceeding I_B = -10 mA (max rated for saturation at I_C = -50 mA). A series resistor of 1.5 kΩ is typical when driven from a 15 V logic source; values scale inversely with drive voltage to maintain I_B/I_C ≥ 0.2 for guaranteed saturation.