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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

onsemi 2SA1392S-AA

Name: 2SA1392S-AA
Brand: onsemi
SKU: 2SA1392S-AA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SA1392S-AA

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: -

Datasheet:: 2SA1392S-AA.pdf

Description:: PNP SILICON TRANSISTOR

Quantity:: RFQ Add To RFQ list

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Inventory:18,000

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Product details

Overview

2SA1392S-AA from SANYO Semiconductor is a PNP epitaxial planar silicon transistor designed for low-frequency general-purpose amplifier applications. It features V_CEO = −50 V, I_C = −200 mA, P_C = 500 mW, h_FE = 100–560 (rank-dependent), and f_T = 250 MHz, operating in audio frequency amplification stages of consumer electronics.

For engineers reviewing the 2SA1392S-AA datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, guaranteed h_FE binning (Rank S: 140–280), −50 V V_CEO rating, TO-92 compatible package, and FBET process reliability for analog signal integrity.

Technical Context

The 2SA1392S-AA is a discrete PNP bipolar junction transistor optimized for linear amplification in low-frequency analog circuits. Its FBET (Flat Base Epitaxial Transistor) process ensures tight h_FE distribution and stable DC current gain across temperature, with V_CE(sat) ≤ −0.3 V at I_C = −100 mA / I_B = −10 mA and V_BE(sat) ≤ −1.0 V under same conditions.

It operates with a maximum junction temperature of 150°C and storage range of −55°C to +150°C. The device exhibits Cob = 2.7 pF at V_CB = −6 V, f = 1 MHz, supporting stable gain in AF amplifier feedback networks without unintended high-frequency roll-off or oscillation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V - Ensures safe operation in single-supply negative-rail amplifier stages up to 45 V collector swing.
I_C	−200 mA - Supports medium-current audio preamp and driver stages without thermal derating at 25°C.
P_C	500 mW - Enables continuous operation in TO-92 package with standard PCB copper area (≥1 cm²).
h_FE (Rank S)	140–280 - Guaranteed DC current gain range for predictable bias point stability in Class-A amplifier designs.
f_T	250 MHz - Provides ample bandwidth margin for distortion-free reproduction up to 20 kHz with gain裕度.
C_ob	2.7 pF - Minimizes Miller effect in common-emitter configurations, preserving phase margin in multi-stage amps.

Pinout & Package

2SA1392S-AA is housed in a TO-92 plastic package (JEDEC TO-92 variant), with standardized lead configuration and 5.0 mm body length. Pin assignment follows JEDEC standard orientation when viewed with flat side facing user and leads downward.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current sink terminal; connects to most negative potential in PNP amplifier stage (e.g., ground or negative rail).
2	Collector	Current source terminal; ties to load resistor or next stage input, typically at higher (less negative) voltage than emitter.
3	Base	Control terminal; accepts small forward-biased current to regulate larger emitter-collector current flow.

Key Features

Feature	Design Value
FBET process technology	Delivers tightly controlled h_FE distribution and reduced parameter drift over temperature and time.
Low V_CE(sat)	≤ −0.3 V enables efficient power delivery in emitter-follower output stages with minimal voltage loss.
High f_T	250 MHz supports wideband audio design with headroom against slew-induced distortion.
TO-92 mechanical compatibility	Direct drop-in replacement for legacy PNP transistors in existing through-hole audio PCB layouts.

Applications

Audio Pre-amplifier Stage	Signal Inverter Circuit
Use Scenario: Low-noise voltage amplification of microphone or line-level signals before ADC or power stage. IC Role / Device Role / Timing Role: PNP small-signal amplifier in common-emitter configuration with fixed bias or emitter degeneration. Use Value: h_FE binning (Rank S) ensures consistent gain matching across channels; −50 V V_CEO allows operation with ±24 V rails.	Use Scenario: Polarity inversion of control logic or analog reference signals in mixed-signal systems. IC Role / Device Role / Timing Role: Switching or linear inverter using base-driven PNP topology with resistive load. Use Value: V_BE(sat) ≤ −1.0 V and fast turn-on ensure clean digital transitions; TO-92 footprint simplifies board-level integration.
DC Power Supply Regulator	LED Driver (Constant-Current)
Use Scenario: Pass transistor in linear voltage regulator for low-noise analog subsystems (e.g., sensor front-end). IC Role / Device Role / Timing Role: Series pass element controlled by error amplifier feedback loop. Use Value: 500 mW dissipation and 150°C T_j rating support continuous operation at 100 mA load with modest heatsinking.	Use Scenario: Constant-current sink for indicator or status LEDs in industrial control panels. IC Role / Device Role / Timing Role: Emitter-follower configured as precision current sink with sense resistor. Use Value: Tight h_FE tolerance reduces current variation across units; −200 mA I_C rating covers typical LED loads (20–60 mA).

Audio Pre-amplifier Stage

Signal Inverter Circuit

Use Scenario: Low-noise voltage amplification of microphone or line-level signals before ADC or power stage.

IC Role / Device Role / Timing Role: PNP small-signal amplifier in common-emitter configuration with fixed bias or emitter degeneration.

Use Value: h_FE binning (Rank S) ensures consistent gain matching across channels; −50 V V_CEO allows operation with ±24 V rails.

Use Scenario: Polarity inversion of control logic or analog reference signals in mixed-signal systems.

IC Role / Device Role / Timing Role: Switching or linear inverter using base-driven PNP topology with resistive load.

Use Value: V_BE(sat) ≤ −1.0 V and fast turn-on ensure clean digital transitions; TO-92 footprint simplifies board-level integration.

DC Power Supply Regulator

LED Driver (Constant-Current)

Use Scenario: Pass transistor in linear voltage regulator for low-noise analog subsystems (e.g., sensor front-end).

IC Role / Device Role / Timing Role: Series pass element controlled by error amplifier feedback loop.

Use Value: 500 mW dissipation and 150°C T_j rating support continuous operation at 100 mA load with modest heatsinking.

Use Scenario: Constant-current sink for indicator or status LEDs in industrial control panels.

IC Role / Device Role / Timing Role: Emitter-follower configured as precision current sink with sense resistor.

Use Value: Tight h_FE tolerance reduces current variation across units; −200 mA I_C rating covers typical LED loads (20–60 mA).

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SA1037AK-TL-E	Higher h_FE (200–400), lower V_CEO (−40 V), SOT-323 package	Surface-mount only; unsuitable for through-hole legacy designs	Select when board space is constrained and reflow assembly is available.
BC557B	Lower f_T (150 MHz), wider h_FE spread (200–450), same TO-92 package	Less consistent gain matching; acceptable where bandwidth < 100 kHz suffices	Choose for cost-sensitive, non-critical AF stages where exact f_T not required.

Compared with 2SA1392S-AA, the 2SA1037AK-TL-E offers superior high-frequency performance but requires PCB redesign, while BC557B provides mechanical compatibility at the expense of guaranteed gain consistency and bandwidth margin-making 2SA1392S-AA optimal for production-stable, medium-fidelity audio signal paths.

Availability

2SA1392S-AA is available at Aetrix Electronics and suitable for audio preamplifiers, signal inverters, DC power supply regulators, and LED drivers requiring stable component supply and long-term manufacturability.

Supply support for 2SA1392S-AA 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 optoelectronic components before its acquisition by ON Semiconductor in 2011.

The 2SA1392S-AA belongs to SANYO's legacy low-frequency general-purpose amplifier transistor family, engineered for reliability and gain consistency in consumer audio, industrial control, and instrumentation signal chains.

FAQ

What is the guaranteed h_FE range for 2SA1392S-AA?

The 2SA1392S-AA is binned to Rank S, guaranteeing a DC current gain (h_FE) range of 140 to 280 at V_CE = −6 V and I_C = −1 mA. This specification is confirmed in the official SANYO datasheet No. 1943, ensuring predictable biasing in amplifier designs without post-manufacturing sorting. The 2SA1392S-AA's h_FE consistency supports matched-pair configurations in differential stages.

Is 2SA1392S-AA pin-compatible with standard TO-92 footprints?

Yes, the 2SA1392S-AA uses a JEDEC-standard TO-92 package with pin 1 = Emitter, pin 2 = Collector, pin 3 = Base - identical to industry-standard PNP transistors like BC557 and 2N3906. This allows direct substitution in existing through-hole layouts without PCB modification. The 2SA1392S-AA's mechanical dimensions (5.0 × 4.0 × 4.0 mm) match TO-92 tolerances per JESD-22-B108.

What is the maximum allowable collector current for continuous operation of 2SA1392S-AA?

The 2SA1392S-AA supports a continuous collector current (I_C) of −200 mA at T_a = 25°C, as specified in its Absolute Maximum Ratings table. Derating is required above 25°C ambient: linear reduction to zero at 150°C junction temperature. The 2SA1392S-AA's 500 mW power dissipation limit governs practical current handling under real thermal conditions.

Does 2SA1392S-AA support audio-frequency amplifier applications up to 20 kHz?

Yes, the 2SA1392S-AA has a gain-bandwidth product (f_T) of 250 MHz, providing more than 12,500× bandwidth margin over the 20 kHz audio band. Combined with low output capacitance (C_ob = 2.7 pF) and stable h_FE, the 2SA1392S-AA maintains linear gain and phase response in Class-A and Class-AB audio preamp stages without compensation.

What is the meaning of "S-AA" suffix in 2SA1392S-AA?

The "S-AA" suffix in 2SA1392S-AA denotes SANYO's internal ordering code specifying Rank S h_FE binning (140–280) and standard TO-92 packaging with tape-and-reel delivery option. It is not a revision or temperature grade identifier. All 2SA1392S-AA units meet the full electrical specifications in datasheet No. 1943, and the 2SA1392S-AA designation ensures traceability to this qualified performance tier.

2SA1392S-AA Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Transistor Type:: -

Current - Collector (Ic) (Max):: -

Voltage - Collector Emitter Breakdown (Max):: -

Vce Saturation (Max) @ Ib, Ic:: -

Current - Collector Cutoff (Max):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: -

Power - Max:: -

Frequency - Transition:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

2SA1392S-AA FAQ

1.How can I place an order for 2SA1392S-AA through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SA1392S-AA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 2SA1392S-AA reliable?

The price and inventory of 2SA1392S-AA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SA1392S-AA is usually 5 days.

3.What payment methods are accepted for 2SA1392S-AA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SA1392S-AA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SA1392S-AA?

2SA1392S-AA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SA1392S-AA order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 2SA1392S-AA?

For technical support, including 2SA1392S-AA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SA1392S-AA requirements.

6.How does Aetrix verify that 2SA1392S-AA is sourced from the original manufacturer or authorized distributors?

All 2SA1392S-AA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 2SA1392S-AA meets industry standards.

7.What is the process for return or replacement of 2SA1392S-AA?

All 2SA1392S-AA units undergo pre-shipment inspection (PSI). If there is an issue with 2SA1392S-AA, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 2SA1392S-AA part is unused and in its original packaging.

Return procedure for 2SA1392S-AA:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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