Toshiba Semiconductor and Storage 2SC2712-Y,LF

Overview

2SC2712-Y,LF from Toshiba Electronic Devices & Storage Corporation is a silicon NPN epitaxial bipolar transistor designed for low-frequency and audio-frequency amplification. It delivers VCEO = 50 V, IC(max) = 150 mA, hFE = 120–240 (Y-grade), NF = 1 dB (typ.), and operates in S-Mini package with pinout Base–Emitter–Collector. It is AEC-Q101 qualified for automotive use.

For engineers reviewing the 2SC2712-Y,LF datasheet, 2SC2712-Y,LF pinout, 2SC2712-Y,LF application, or 2SC2712-Y,LF equivalent, key selection criteria include hFE linearity (0.95 typ.), low-noise performance at 1 kHz, VCEO derating margin, S-Mini thermal dissipation (200 mW on FR4), and automotive qualification status.

Technical Context

This transistor employs epitaxial base construction to achieve high hFE linearity and low noise across its operating range. Its DC current gain spans 120–240 at VCE = 6 V, IC = 2 mA, and maintains stable fT ≥ 80 MHz under typical bias conditions.

The device supports linear amplification with VCE(sat) ≤ 0.25 V at IC = 100 mA/IB = 10 mA and exhibits Cob = 1.0 pF at VCB = 10 V, enabling predictable high-frequency roll-off behavior in audio and AM amplifier stages.

Key Specifications

Pinout & Package

S-Mini package: ultra-compact surface-mount plastic case (12 mg typ.), footprint compatible with JEDEC TO-236AB outline, optimized for high-density audio PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN small-signal amplifier applications.

Compared with 2SC2712-O,LF and BC847BW, the 2SC2712-Y,LF provides superior hFE linearity and automotive qualification while maintaining identical S-Mini footprint-enabling drop-in replacement in AEC-Q101-compliant designs without layout change, unlike BC847BW which requires rework for thermal and reliability validation.

Availability

2SC2712-Y,LF is available at Aetrix Electronics and suitable for AM radio receivers, automotive cabin audio systems, portable audio output drivers, and industrial sensor signal conditioning requiring stable component supply and long-term lifecycle support.

Supply support for 2SC2712-Y,LF 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

Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and logic ICs with emphasis on reliability, efficiency, and automotive-grade qualification.

The 2SC2712-Y,LF belongs to Toshiba's legacy S-Mini bipolar transistor family, engineered specifically for low-noise, high-linearity analog amplification in automotive and consumer audio applications where AEC-Q101 compliance and tight hFE binning are essential.

FAQ

What is the hFE range for 2SC2712-Y,LF and how is it binned?

The 2SC2712-Y,LF has a guaranteed DC current gain (hFE) range of 120 to 240 at VCE = 6 V and IC = 2 mA. This Y-grade binning is achieved through post-production electrical testing and sorting, ensuring tighter gain distribution than the O-grade (70–140) variant. The 2SC2712-Y,LF's hFE linearity ratio of 0.95 (typ.) further validates its suitability for precision analog amplification where gain consistency across signal levels matters.

Is 2SC2712-Y,LF qualified for automotive applications?

Yes, 2SC2712-Y,LF is explicitly AEC-Q101 qualified, as confirmed in Toshiba's orderable part number table and reliability documentation. It meets stress test requirements for temperature cycling, humidity bias, and high-temperature operating life applicable to automotive electronic control units and infotainment systems operating within −40°C to +125°C junction temperature limits. The 2SC2712-Y,LF designation indicates automotive-use qualification per Toshiba's internal classification.

What is the maximum power dissipation for 2SC2712-Y,LF and under what conditions?

The 2SC2712-Y,LF has a maximum collector power dissipation (PC) of 200 mW when mounted on a standard 25.4 mm × 25.4 mm × 1.6 mm FR4 board with 0.8 mm² copper pads per terminal. This rating assumes Ta = 25°C and applies only with adequate PCB copper area; derating is required above 25°C ambient, reaching zero dissipation at approximately 125°C ambient per the published PC–Ta curve. Exceeding this limit risks thermal runaway or permanent degradation of the 2SC2712-Y,LF.

How does the noise figure of 2SC2712-Y,LF compare to other S-Mini transistors?

The 2SC2712-Y,LF achieves a typical noise figure (NF) of 1 dB at 1 kHz with RG = 10 kΩ, which is among the lowest in Toshiba's S-Mini NPN portfolio. This outperforms generic equivalents like BC847 series (NF ≈ 4–5 dB) and matches performance of purpose-built audio transistors such as 2SC1815-Y. The low NF stems from optimized epitaxial base thickness and emitter geometry, making the 2SC2712-Y,LF especially effective in microphone preamps and AM IF stages where signal integrity is paramount.

What complementary PNP transistor pairs with 2SC2712-Y,LF?

The 2SC2712-Y,LF is explicitly designated as complementary to the 2SA1162 PNP transistor in Toshiba's datasheet Feature section. Both share matching S-Mini packaging, comparable VCEO (−50 V), IC(max) (−150 mA), and hFE grading structure, enabling balanced push-pull output stages and differential amplifier designs. The 2SA1162 also carries AEC-Q101 qualification, ensuring thermal and gain symmetry critical for automotive audio applications using the 2SC2712-Y,LF.