onsemi NSVPZTA92T1G

Overview

NSVPZTA92T1G from onsemi is a PNP silicon high-voltage transistor in SOT-223 package, rated for −300 V_CEO, −500 mA_C, and 1.5 W power dissipation at T_A = 25°C; it serves as a high-voltage switch in automotive ignition circuits, industrial relay drivers, and flyback converter output stages.

For engineers reviewing the NSVPZTA92T1G datasheet, pinout, applications, or equivalent options, key selection criteria include verified −300 V breakdown rating, AEC-Q101 qualification, thermal resistance of 83.3°C/W, DC current gain (h_FE) ≥25 at −1 mA, and SOT-223 surface-mount compatibility with FR-4 PCB layout.

Technical Context

This device operates as a medium-power PNP bipolar junction transistor optimized for high-voltage switching where robust V_CEO/V_CBO = −300 V and low leakage (I_CBO ≤ −0.25 A) are required. It features f_T = 50 MHz bandwidth and C_cb = 6.0 pF at 1 MHz, supporting stable operation in inductive load switching up to 100 kHz.

The NSVPZTA92T1G uses a thermally enhanced SOT-223 package with collector-connected pins 2 and 4, enabling direct heatsinking via PCB copper area. Its −5.0 V_EBO and −0.9 V_BE(sat) at −20 mA/−2 mA support reliable base drive in high-side configurations.

Key Specifications

Pinout & Package

SOT-223 (Case 318E, Style 1) surface-mount package with exposed collector tab for thermal conduction; pins 2 and 4 are internally connected to collector, pin 1 is base, pin 3 is emitter.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MJD2955T4G and ZTX951, the NSVPZTA92T1G uniquely balances −300 V rating, SOT-223 surface-mount compatibility, AEC-Q101 compliance, and 1.5 W power capability-making it the only option qualified for automotive SMT high-voltage switching without heatsink dependency.

Availability

NSVPZTA92T1G is available at Aetrix Electronics and suitable for automotive ignition systems, industrial PLC I/O modules, and isolated flyback power supplies requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.

Supply support for NSVPZTA92T1G 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The NSVPZTA92T1G belongs to onsemi's high-voltage bipolar transistor product line, engineered specifically for robust switching in automotive and industrial environments where reliability under voltage stress and thermal cycling is critical.

FAQ

What is the maximum collector-emitter voltage rating for NSVPZTA92T1G?

The NSVPZTA92T1G has a guaranteed minimum V_(BR)CEO of −300 Vdc at I_C = −1.0 mAdc and T_A = 25°C, as confirmed in the onsemi datasheet PZTA92T1/D Rev. 12. This rating applies under pulsed test conditions (t_p = 300 µs, duty cycle = 0.02) and defines the absolute maximum blocking capability before breakdown. Designers must maintain appropriate voltage derating margins for continuous operation in real-world circuits.

Is NSVPZTA92T1G qualified for automotive applications?

Yes, the NSVPZTA92T1G carries the NSV prefix indicating dedicated automotive process control and is explicitly AEC-Q101 qualified and PPAP capable per the onsemi datasheet. The NSVPZTA92T1G undergoes stress testing for temperature cycling, humidity, mechanical shock, and ESD per AEC-Q101 standards, making it suitable for under-hood and chassis-mounted automotive electronics.

What package type does NSVPZTA92T1G use and how is it thermally managed?

The NSVPZTA92T1G uses the SOT-223 (Case 318E) surface-mount package with pins 2 and 4 internally connected to the collector for enhanced thermal conduction. Per datasheet Note 1, thermal resistance R_JA is 83.3°C/W when mounted on a 1.575 in × 1.575 in FR-4 board with a 0.93 in² copper pad under the collector tab-this layout is essential to achieve the rated 1.5 W power dissipation.

How does the DC current gain (h_FE) of NSVPZTA92T1G vary with operating conditions?

The NSVPZTA92T1G exhibits h_FE = 25 (min) at I_C = −1.0 mAdc, rising to 40 (min) at I_C = −30 mAdc, all measured at V_CE = −10 Vdc and T_A = 25°C. Figure 1 in the datasheet shows h_FE degrades at extreme temperatures: it drops significantly below −55°C and above +125°C. Designers should verify gain stability across their full operating temperature range using the published curves.

What is the purpose of the NSV prefix in NSVPZTA92T1G?

The NSV prefix in NSVPZTA92T1G denotes a version manufactured under onsemi's dedicated automotive and high-reliability production flow, with unique site controls, enhanced traceability, and PPAP documentation support. It distinguishes this variant from the commercial-grade PZTA92T1G and confirms compliance with automotive change control, lot disposition, and audit requirements-critical for Tier-1 and OEM supply chain validation.