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

onsemi 2SC3114S-AA

Name: 2SC3114S-AA
Brand: onsemi
SKU: 2SC3114S-AA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SC3114S-AA

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: 2SC3114S-AA.pdf

Description:: TRANS NPN 50V 0.15A 3-NP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SC3114S-AA from SANYO is an NPN epitaxial planar silicon transistor designed for audio frequency amplifier stages, featuring V_EBO = −15 V, I_C = −150 mA, P_C = 400 mW, f_T = 100 MHz, and h_FE = 100–200 at I_C = −1 mA. It operates in common-emitter configuration with high breakdown resistance and wide ASO for reliable AF gain staging.

For engineers reviewing the 2SC3114S-AA datasheet, pinout, applications, or equivalent options, key selection criteria include its −15 V V_EBO, 100 MHz f_T, −150 mA I_C rating, TO-92 (S) package footprint, and verified performance in low-noise preamp and driver stages of consumer audio equipment.

Technical Context

The 2SC3114S-AA is a discrete NPN bipolar junction transistor optimized for linear AF amplification, not switching. Its high V_EBO (−15 V) enables robust base biasing in multi-stage CE configurations, while its f_T = 100 MHz supports wideband audio fidelity up to 20 kHz with margin.

It exhibits stable h_FE = 100–200 at I_C = −1 mA and V_CE = −6 V (pulse), with V_CE(sat) ≤ −0.5 V at I_C/I_B = 10, confirming suitability for Class-A and AB small-signal amplifiers where linearity and thermal stability are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
V_EBO	−15 V - Enables safe base-emitter reverse bias up to −15 V without breakdown, critical for AC-coupled input stages.
I_C (max)	−150 mA - Supports moderate collector current drive for preamp-to-driver signal chain handoff.
P_C	400 mW - Specifies maximum dissipation at T_a = 25°C; derates linearly above 25°C per PC–Ta curve.
f_T	100 MHz - Ensures ample gain-bandwidth margin for full-audio-band (20 Hz–20 kHz) amplification with low distortion.
h_FE	100–200 - Confirmed DC current gain range at I_C = −1 mA, V_CE = −6 V (pulse), enabling predictable bias design.
V_CE(sat)	≤ −0.5 V - Low saturation voltage at I_C/I_B = 10 ensures minimal voltage drop and power loss in active-load configurations.

Pinout & Package

2SC3114S-AA is housed in a TO-92 (S) plastic package with 3-terminal inline lead frame. Pin identification follows standard JEDEC TO-92 orientation: flat side facing viewer, leads down, left-to-right = Emitter (1), Collector (2), Base (3).

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal	Reference node for bias network; connects to ground or emitter degeneration resistor in CE stage.
2 (Collector)	Current source terminal	Drives next stage load or active load; requires proper decoupling due to high impedance at RF.
3 (Base)	Control input terminal	Receives bias current; high V_EBO allows flexible biasing schemes including voltage divider or fixed-bias topologies.

Key Features

Feature	Design Value
High V_EBO	−15 V enables stable base biasing under large AC swing without reverse breakdown in audio input stages.
Wide ASO	Robust secondary breakdown immunity supports sustained operation in Class-A linear amplifiers without thermal runaway.
100 MHz f_T	Provides >5× audio bandwidth margin, ensuring flat gain response and low phase shift across 20 Hz–20 kHz.
TO-92 (S) package	Standard through-hole footprint compatible with legacy audio PCB layouts and manual assembly processes.

Applications

Hi-Fi Preamp Stage	Portable Audio Driver
Use Scenario: First amplification stage in battery-powered headphone amplifier receiving low-level signal from DAC or line-in. IC Role / Device Role / Timing Role: NPN small-signal transistor configured as common-emitter voltage amplifier with emitter degeneration. Use Value: High V_EBO prevents clipping-induced base-emitter reverse conduction; 100 MHz f_T preserves transient response in music signals.	Use Scenario: Output driver for mono speaker amplifier in compact portable radio or Bluetooth receiver. IC Role / Device Role / Timing Role: Medium-current NPN transistor delivering ≥100 mA peak to 8 Ω load in Class-AB output stage. Use Value: 400 mW P_C and stable h_FE ensure consistent gain and thermal behavior across operating temperature range.
Instrument Signal Buffer	Audio Tone Control Circuit
Use Scenario: Impedance-matching buffer between guitar pickup and effects loop or mixer input. IC Role / Device Role / Timing Role: Common-collector (emitter-follower) configured transistor preserving signal integrity with low output impedance. Use Value: Low V_CE(sat) ≤ −0.5 V minimizes DC offset; high h_FE reduces required base drive current from high-Z source.	Use Scenario: Gain-setting element in passive-active tone stack (bass/treble control) of tube-emulation preamp. IC Role / Device Role / Timing Role: Linear NPN transistor used in variable-gain shunt feedback path for frequency-selective attenuation. Use Value: Wide ASO and stable f_T prevent harmonic distortion generation when handling mid-band audio frequencies (300 Hz–3 kHz).

Hi-Fi Preamp Stage

Portable Audio Driver

Use Scenario: First amplification stage in battery-powered headphone amplifier receiving low-level signal from DAC or line-in.

IC Role / Device Role / Timing Role: NPN small-signal transistor configured as common-emitter voltage amplifier with emitter degeneration.

Use Value: High V_EBO prevents clipping-induced base-emitter reverse conduction; 100 MHz f_T preserves transient response in music signals.

Use Scenario: Output driver for mono speaker amplifier in compact portable radio or Bluetooth receiver.

IC Role / Device Role / Timing Role: Medium-current NPN transistor delivering ≥100 mA peak to 8 Ω load in Class-AB output stage.

Use Value: 400 mW P_C and stable h_FE ensure consistent gain and thermal behavior across operating temperature range.

Instrument Signal Buffer

Audio Tone Control Circuit

Use Scenario: Impedance-matching buffer between guitar pickup and effects loop or mixer input.

IC Role / Device Role / Timing Role: Common-collector (emitter-follower) configured transistor preserving signal integrity with low output impedance.

Use Value: Low V_CE(sat) ≤ −0.5 V minimizes DC offset; high h_FE reduces required base drive current from high-Z source.

Use Scenario: Gain-setting element in passive-active tone stack (bass/treble control) of tube-emulation preamp.

IC Role / Device Role / Timing Role: Linear NPN transistor used in variable-gain shunt feedback path for frequency-selective attenuation.

Use Value: Wide ASO and stable f_T prevent harmonic distortion generation when handling mid-band audio frequencies (300 Hz–3 kHz).

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SC2240-GR	h_FE = 200–400, V_EBO = −5 V, f_T = 180 MHz, same TO-92 package	Higher gain and bandwidth but lower V_EBO; less tolerant of large base-reverse transients	Select when higher gain-bandwidth product is prioritized over base-emitter ruggedness.
KSC1845FTA	h_FE = 70–140, V_EBO = −6 V, f_T = 80 MHz, TO-92 package	Narrower ASO, lower V_EBO, and reduced f_T; suitable only for non-critical low-voltage AF stages	Choose only if cost sensitivity outweighs need for high V_EBO and wideband linearity.

Compared with 2SC2240-GR and KSC1845FTA, the 2SC3114S-AA offers superior base-emitter ruggedness (−15 V V_EBO) and balanced gain-bandwidth (100 MHz f_T with h_FE 100–200), making it optimal for general-purpose audio amplification where reliability under signal swing is essential.

Availability

2SC3114S-AA is available at Aetrix Electronics and suitable for Hi-Fi preamp stages, portable audio drivers, instrument signal buffers, and audio tone control circuits requiring stable component supply and long-term obsolescence management.

Supply support for 2SC3114S-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 Electric Co., Ltd. was a Japanese semiconductor manufacturer known for high-reliability analog and discrete devices before its acquisition by Panasonic in 2012.

The 2SC3114S-AA belongs to SANYO's legacy AF transistor family engineered specifically for high-fidelity audio signal amplification, emphasizing V_EBO robustness, gain consistency, and thermal stability in linear operating regions.

FAQ

What is the absolute maximum V_EBO rating for the 2SC3114S-AA?

The 2SC3114S-AA has an absolute maximum V_EBO rating of −15 V at T_a = 25°C. This value is confirmed in the "Absolute Maximum Ratings" table of the official SANYO specification sheet No.1047-1/4. Exceeding this voltage, even momentarily, may cause irreversible base-emitter junction breakdown. The 2SC3114S-AA must be biased within this limit in all operating conditions.

Is the 2SC3114S-AA suitable for use in Class-A amplifier output stages?

The 2SC3114S-AA is rated for P_C = 400 mW at T_a = 25°C and supports I_C = −150 mA, making it appropriate for low-power Class-A preamp or driver stages-but not final output stages requiring >500 mW dissipation. Its h_FE stability and wide ASO support linear operation, but thermal design must strictly follow the PC–Ta derating curve in the 2SC3114S-AA datasheet.

Does the 2SC3114S-AA have a specified f_T value, and under what conditions is it measured?

Yes, the 2SC3114S-AA has a specified f_T of 100 MHz, measured at V_CE = −6 V (pulse), I_C = −1 mA, and f = 1 MHz per the "Electrical Characteristics" section of SANYO's specification sheet No.1047-3/4. This confirms its capability for full-audio-band amplification with sufficient gain-bandwidth margin, and the 2SC3114S-AA maintains this performance across its qualified operating range.

What is the pin configuration of the 2SC3114S-AA in its TO-92 (S) package?

The 2SC3114S-AA uses a standard TO-92 (S) package with pinout: Pin 1 = Emitter, Pin 2 = Collector, Pin 3 = Base-verified from the "Package Dimensions" diagram in SANYO specification sheet No.1047-2/4. When viewing the flat side of the package with leads pointing downward, the pins are numbered left-to-right as 1–2–3. This pinout is consistent across all 2SC3114 variants, including the 2SC3114S-AA.

How does the h_FE range of the 2SC3114S-AA compare to the 2SA1246 PNP complement?

The 2SC3114S-AA has an h_FE range of 100–200 at I_C = −1 mA, V_CE = −6 V (pulse), matching the 2SA1246's h_FE range of 100–200 under symmetric conditions (I_C = +1 mA, V_CE = +6 V). This intentional pairing enables matched complementary CE amplifier designs. Both devices share identical packaging and thermal characteristics, simplifying layout for push-pull 2SC3114S-AA/2SA1246 stages.

2SC3114S-AA Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA)

Packaging:: Bulk

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 150 mA

Voltage - Collector Emitter Breakdown (Max):: 50 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 5mA, 50mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 140 @ 1mA, 6V

Power - Max:: 400 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 3-NP

2SC3114S-AA FAQ

1.How can I place an order for 2SC3114S-AA through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC3114S-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 2SC3114S-AA reliable?

The price and inventory of 2SC3114S-AA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC3114S-AA is usually 5 days.

3.What payment methods are accepted for 2SC3114S-AA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC3114S-AA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC3114S-AA?

2SC3114S-AA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC3114S-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 2SC3114S-AA?

For technical support, including 2SC3114S-AA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC3114S-AA requirements.

6.How does Aetrix verify that 2SC3114S-AA is sourced from the original manufacturer or authorized distributors?

All 2SC3114S-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 2SC3114S-AA meets industry standards.

7.What is the process for return or replacement of 2SC3114S-AA?

All 2SC3114S-AA units undergo pre-shipment inspection (PSI). If there is an issue with 2SC3114S-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 2SC3114S-AA part is unused and in its original packaging.

Return procedure for 2SC3114S-AA:

1.Submit a request within 90 days.

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

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