onsemi MPSA92ZL1

Overview

MPSA92ZL1 from onsemi is a PNP silicon high-voltage general-purpose transistor in TO-92 package, rated for −300 V_CEO, −300 V_CBO, −5 V_EBO, −500 mA continuous collector current, and 625 mW power dissipation at T_A = 25°C. It delivers h_FE ≥ 25 at I_C = −1.0 mA and V_CE = −10 V, with f_T = 50 MHz and C_cb = 6.0 pF - used in high-voltage switching and linear amplification stages of industrial power supplies and CRT deflection circuits.

For engineers reviewing the MPSA92ZL1 datasheet, pinout, applications, or equivalent options, key selection criteria include verified −300 V breakdown rating, TO-92 lead configuration (Emitter–Collector–Base), thermal resistance R_JA = 200 °C/W, DC gain consistency across −55°C to +125°C, and Pb-free ammo-pack packaging compliance.

Technical Context

The MPSA92ZL1 operates as a PNP bipolar junction transistor optimized for high-voltage switching and medium-speed amplification. Its V_(BR)CEO = −300 V and V_(BR)CBO = −300 V enable use in flyback snubbers and relay drivers where voltage transients exceed 200 V. The device exhibits h_FE ≥ 25 at low I_C (−1 mA) and maintains usable gain up to −30 mA, with V_CE(sat) ≤ −0.5 V at I_C/I_B = 10.

Thermal design is constrained by R_JA = 200 °C/W and R_JC = 83.3 °C/W, requiring heatsinking for sustained >300 mW operation. Its f_T = 50 MHz and C_cb = 6.0 pF support stable performance in <10 MHz switching applications, while safe operating area (SOA) limits pulsed I_C to 1 A at V_CE = 10 V for 10 ms.

Key Specifications

Pinout & Package

Package: TO-92 (Case 29-11), Pb-free, straight-lead ammo-pack variant (ZL1 suffix). Dimensions per ON Semiconductor spec: A = 4.45–5.20 mm, B = 4.32–5.33 mm, C = 3.18–4.19 mm, lead pitch = 1.27 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPSA92G and 2N5401, the MPSA92ZL1 uniquely combines −300 V rating, ammo-pack lead consistency, and 6.0 pF C_cb - making it the only choice for production-critical HV snubbers requiring traceable Pb-free handling and repeatable thermal performance.

Availability

MPSA92ZL1 is available at Aetrix Electronics and suitable for industrial power supply snubbers, CRT deflection circuits, relay driver interfaces, and high-voltage logic level shifters requiring stable component supply with full RoHS compliance and lot-traceable manufacturing.

Supply support for MPSA92ZL1 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 management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The MPSA92ZL1 belongs to onsemi's legacy high-voltage bipolar transistor product line, designed specifically for robustness in industrial power conversion, display deflection, and electromechanical interface applications where reliability under voltage stress is critical.

FAQ

What is the maximum collector-emitter voltage rating for the MPSA92ZL1?

The MPSA92ZL1 has a guaranteed minimum V_(BR)CEO of −300 V at I_C = −1.0 mA and I_B = 0. This rating is validated per onsemi's datasheet (Publication Order Number MPSA92/D, Rev. 6) and applies to the MPSA92ZL1 as a Pb-free TO-92 packaged variant of the MPSA92 family. Operation above this voltage risks avalanche breakdown and permanent damage to the MPSA92ZL1.

Does the MPSA92ZL1 have the same pinout as standard TO-92 PNP transistors?

Yes, the MPSA92ZL1 uses the standard TO-92 pinout: Pin 1 = Emitter, Pin 2 = Collector, Pin 3 = Base - confirmed in the "PACKAGE DIMENSIONS" section (page 5) of the official MPSA92/D datasheet. This matches industry-standard PNP devices like the 2N3906 and MPSA42, enabling direct layout reuse in existing TO-92 footprints where voltage ratings align.

What is the DC current gain (h_FE) specification for the MPSA92ZL1 at low collector current?

The MPSA92ZL1 guarantees h_FE ≥ 25 at I_C = −1.0 mA and V_CE = −10 V, per the "ELECTRICAL CHARACTERISTICS" table on page 2 of the MPSA92/D datasheet. This value is measured across all units and forms the basis for base resistor calculations in low-current switching applications using the MPSA92ZL1.

Can the MPSA92ZL1 be used in surface-mount designs?

No - the MPSA92ZL1 is exclusively offered in through-hole TO-92 packaging (Case 29-11), as documented in the "ORDERING INFORMATION" table (page 3) of the MPSA92/D datasheet. It lacks SMT-compatible variants such as SO-92 or SOT-23. For surface-mount equivalents, engineers must evaluate alternative parts like the NSS12201MR6T1G, not the MPSA92ZL1.

Is the MPSA92ZL1 RoHS-compliant and lead-free?

Yes, the MPSA92ZL1 is explicitly marked as Pb-free in onsemi's ordering information (page 3, MPSA92ZL1G entry) and conforms to RoHS Directive 2011/65/EU. The "G" suffix in its full part number (MPSA92ZL1G) denotes Pb-free packaging, and the device meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for the TO-92 package - a verified attribute of the MPSA92ZL1.