onsemi 2SB892T

Overview

2SB892T from SANYO Semiconductor is a PNP epitaxial planar silicon transistor designed for high-current switching in power supplies, relay drivers, lamp drivers, and automotive wiring harnesses. It features V_CEO = −50 V, I_C = −2 A (DC), V_CE(sat) = −0.15 V (typ) at I_C = −1 A / I_B = −50 mA, h_FE = 100–560 (graded R–U), and f_T = 150 MHz.

For engineers reviewing the 2SB892T datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed low saturation voltage under high current, wide active safe operating area (ASO), graded h_FE bins for consistent bias design, and automotive-grade thermal robustness up to T_j = 150 °C.

Technical Context

The 2SB892T operates as a medium-power PNP bipolar junction transistor with FBET/MBIT process technology, enabling low V_CE(sat) and high current gain linearity across its rated range. Its −50 V V_CEO and −60 V V_CBO support use in 24 V and 48 V automotive and industrial DC systems with margin.

Designed for linear and saturated switching, it delivers stable h_FE performance from 100 mA to 1.5 A (h_FE1/h_FE2), supports pulse currents up to −4 A, and maintains Cob = 12 pF at V_CB = −10 V - critical for minimizing switching losses in relay and lamp drive circuits.

Key Specifications

Pinout & Package

2SB892T is housed in a TO-126 (MP) plastic package with 3 leads: Emitter (Pin 1), Collector (Pin 2), Base (Pin 3). The package provides mechanical robustness and thermal dissipation suitable for surface-mount-compatible through-hole assembly on FR-4 PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP high-current switching applications.

Compared with 2SB892T, 2SB1260Z offers greater voltage headroom at the cost of conduction loss, while MJD2955T4 trades precision low-loss switching for raw current capacity - making 2SB892T the optimal balance for 1–2 A automotive and industrial switching where thermal management and efficiency are constrained.

Availability

2SB892T is available at Aetrix Electronics and suitable for automotive relay drivers, industrial lamp controllers, and 24 V power supply OR-ing circuits requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for 2SB892T 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

SANYO Semiconductor was a Japanese semiconductor manufacturer specializing in analog, power, and discrete devices before its acquisition by ON Semiconductor in 2013. Known for high-reliability automotive and industrial transistors.

The 2SB892T belongs to SANYO's legacy MP-series PNP switching transistor family, engineered specifically for robust, low-loss current control in harsh-environment automotive and industrial power interfaces.

FAQ

What is the maximum continuous collector current rating for the 2SB892T?

The 2SB892T has a maximum continuous collector current (I_C) rating of −2 A at T_a = 25 °C. Derating is required above 25 °C ambient; the device supports −4 A pulsed current (I_CP) for ≤10 ms with 10% duty cycle. This rating enables direct driving of standard 12 V/24 V relays and incandescent lamps without external current amplification.

Does the 2SB892T have a specified gain-bandwidth product (f_T)?

Yes, the 2SB892T has a guaranteed minimum f_T of 150 MHz, measured at V_CE = −10 V and I_C = −50 mA. This high f_T supports clean switching in PWM lamp dimming and fast relay actuation circuits up to several hundred kHz, ensuring minimal rise/fall time degradation.

How is the h_FE graded for the 2SB892T, and why does it matter?

The 2SB892T is graded into four h_FE bins (R: 100–200, S: 140–280, T: 200–400, U: 280–560) at I_C = −100 mA. This grading allows designers to select units matching their base drive capability and stability requirements - for example, 'U' grade enables lower base current in microcontroller-driven applications, reducing GPIO loading.

What is the package type and lead configuration of the 2SB892T?

The 2SB892T uses a TO-126 (SANYO designation: MP) plastic package with three leads in linear order: Pin 1 = Emitter, Pin 2 = Collector, Pin 3 = Base. This through-hole package supports PCB mounting with moderate thermal dissipation (1 W at T_a = 25 °C) and is compatible with standard wave soldering processes.

Can the 2SB892T be used in automotive under-hood applications?

Yes, the 2SB892T is qualified for automotive under-hood use with a maximum junction temperature (T_j) of 150 °C and storage temperature range of −55 °C to +150 °C. Its FBET/MBIT process ensures stable parametric performance across temperature, and its −50 V V_CEO rating accommodates load-dump transients in 12 V systems - making it suitable for BCM, lighting, and relay modules.