onsemi 2SB892S

Overview

2SB892S from SANYO Semiconductor is a PNP epitaxial planar silicon transistor designed for large-current switching applications including relay drivers, lamp drivers, and automotive wiring harnesses. It delivers V_CEO = −50 V, I_C = −2 A continuous, V_CE(sat) = −0.15 V (typ) at I_C = −1 A / I_B = −50 mA, and f_T = 150 MHz - enabling robust low-loss switching in 12 V automotive and industrial power control circuits.

For engineers reviewing the 2SB892S datasheet, pinout, applications, or equivalent options, key selection criteria include its graded h_FE (100–560), wide ASO, low saturation voltage, and MP package compatibility with TO-126 footprint - critical for thermal reliability in high-duty-cycle switching designs.

Technical Context

The 2SB892S operates as a medium-power PNP bipolar junction transistor using FBET/MBIT process technology to achieve low V_CE(sat) and high current gain linearity across I_C = −100 mA to −1.5 A. Its rated T_j = 150 °C and PC = 1 W support operation in thermally constrained enclosures without forced cooling.

It features graded h_FE bins (R/S/T/U) defined at V_CE = −2 V and I_C = −100 mA, with guaranteed minimum h_FE = 40 at I_C = −1.5 A - ensuring predictable drive requirements in saturated-switching configurations where base current must be precisely sized.

Key Specifications

Pinout & Package

2SB892S is housed in the MP package (SANYO's designation for TO-126), a through-hole plastic power package with 3 leads and integral heat-dissipating tab. The case is electrically connected to the collector terminal.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 2SB892S, the 2SB1260Z offers greater voltage safety margin but sacrifices conduction efficiency, while the MJD2955G provides scalable current handling at the cost of layout compatibility and binning precision - making 2SB892S optimal for cost-sensitive, thermally constrained 1–2 A automotive switches.

Availability

2SB892S is available at Aetrix Electronics and suitable for automotive relay drivers, industrial lamp controls, and DC motor direction circuits requiring stable component supply and long-term lifecycle continuity.

Supply support for 2SB892S 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 2011; its legacy products remain widely deployed in automotive and industrial systems.

The 2SB892S belongs to SANYO's legacy MP-packaged bipolar transistor family engineered for high-reliability, medium-power switching in harsh ambient environments - particularly targeting automotive body electronics and industrial control interfaces.

FAQ

What is the maximum continuous collector current rating for the 2SB892S?

The 2SB892S has a maximum continuous collector current (I_C) rating of −2 A at T_a = 25 °C. Derating applies above 25 °C ambient; at 100 °C, usable I_C drops to approximately −1.2 A. This rating assumes proper PCB copper area (≥ 1 cm² per lead) and no forced airflow. Exceeding this current risks thermal runaway due to its 1 W power dissipation limit.

Does the 2SB892S have a built-in base-emitter resistor?

No, the 2SB892S is a standard three-terminal PNP bipolar transistor with no internal base-emitter resistor. External base biasing components - such as a series current-limiting resistor or active driver circuit - must be provided to ensure proper saturation and avoid excessive base current. Its base terminal (Pin 3) is a pure control node requiring negative current relative to the emitter.

Is the 2SB892S pin-compatible with the 2SB892 (non-S suffix)?

Yes, the 2SB892S is a direct replacement for the base 2SB892, sharing identical MP (TO-126) package dimensions, pinout (E-C-B), absolute maximum ratings, and electrical characteristics. The "S" suffix denotes SANYO's standard industrial-grade screening and packaging - not a functional or mechanical revision - and maintains full form-fit-function compatibility.

What is the typical DC current gain (h_FE) of the 2SB892S at 1.5 A collector current?

At V_CE = −2 V and I_C = −1.5 A, the 2SB892S guarantees a minimum h_FE of 40, with typical values ranging from 60 to 120 depending on grade bin (S/T/U). This ensures predictable base drive requirements - for example, −37.5 mA base current suffices to saturate the device at −1.5 A collector current, assuming h_FE ≥ 40.

Can the 2SB892S be used in linear amplifier applications?

The 2SB892S is characterized and optimized for switching operation, not linear amplification. While it exhibits f_T = 150 MHz, its SOA, gain linearity, and distortion performance are not specified for analog signal amplification. Its datasheet emphasizes switching parameters (V_CE(sat), t_on/t_off, ASO), and using it in linear mode risks thermal instability due to limited safe operating area at intermediate V_CE and I_C combinations.