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

onsemi 2SC3332S-AA

Name: 2SC3332S-AA
Brand: onsemi
SKU: 2SC3332S-AA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SC3332S-AA

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: 2SC3332S-AA.pdf

Description:: TRANS NPN 160V 0.7A 3-NP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SC3332S-AA from onsemi is a low-saturation-voltage NPN bipolar junction transistor rated for 160 V V_CEO, 0.7 A I_C, and 700 mW P_C, optimized for switching applications in power supplies and motor drivers where fast turn-on (50 ns) and robust SOA are required.

For engineers reviewing the 2SC3332S-AA datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CE(sat) ≤ 0.4 V at I_C = 250 mA, h_FE range of 140–280 (Rank S), and SC-34A/TO-92 package compatibility with through-hole PCB assembly.

Technical Context

This device employs onsemi's MBIT process to achieve high breakdown voltage (V_(BR)CBO = 180 V) and excellent h_FE linearity across I_C = 10 mA to 100 mA. Its wide Safe Operating Area (SOA) supports pulsed operation up to I_CP = 1.5 A with 20 μs pulse width and ≤1% duty cycle.

Designed for DC and pulse-switching roles, it delivers f_T = 120 MHz at V_CE = 10 V, I_C = 50 mA, and exhibits low output capacitance (C_ob = 8 pF at V_CB = 10 V), enabling stable performance in medium-frequency switching circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	160 V - Maximum continuous collector-emitter voltage before avalanche; defines upper limit for off-state blocking in switch-mode topologies.
I_C	0.7 A - Continuous DC collector current rating; sets thermal design baseline for heatsinking and trace width in PCB layout.
V_CE(sat)	0.12–0.4 V @ I_C=250 mA, I_B=25 mA - Low saturation voltage reduces conduction loss and improves efficiency in linear and switching regulators.
h_FE (Rank S)	140–280 @ V_CE=5 V, I_C=100 mA - Confirmed DC current gain range ensures predictable base drive requirements for reliable saturation.
f_T	120 MHz - Gain-bandwidth product enables stable amplification or switching up to ~10–20 MHz with adequate phase margin.
C_ob	8 pF @ V_CB=10 V, f=1 MHz - Low output capacitance minimizes switching energy loss and improves rise/fall time consistency.
t_on/t_f	50 ns / 60 ns - Verified turn-on and fall times support >5 MHz switching in hard-switched applications with controlled gate/base drive.

Pinout & Package

2SC3332S-AA is housed in the SC-34A (JEITA/TO-92/TO-226AA/SOT-54) plastic through-hole package with 0.269 g mass and standardized lead spacing for manual or wave soldering.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current exit path for majority carriers	Connected to ground or low-side return; requires low-impedance trace to minimize V_BE sensing error and thermal resistance.
2 (Collector)	Current entry path under forward bias	Interfaces with load or supply rail; must accommodate peak pulsed current (1.5 A) and voltage transients up to 180 V.
3 (Base)	Control terminal for minority carrier injection	Driven with current-limited source (e.g., R_B = 333 Ω per test circuit); sensitive to ESD and requires transient protection in noisy environments.

Key Features

Feature	Design Value
High breakdown voltage	V_(BR)CBO = 180 V ensures robustness against voltage spikes in inductive load switching and flyback converter primary side.
Low V_CE(sat)	≤0.4 V at I_C = 250 mA reduces conduction loss by >30% vs. standard general-purpose transistors with similar I_C rating.
Wide SOA	Rated for single-pulse I_CP = 1.5 A with 20 μs width; supports surge-tolerant operation in motor start-up and relay driving.
MBIT process	Enables tight h_FE distribution (140–280 for Rank S) and improved thermal stability over temperature (T_j ≤ 150 °C).

Applications

DC Power Supply Switching	Small Motor Driver Stage
Use Scenario: Used as main switching transistor in offline AC-DC adapters with <10 W output and discontinuous conduction mode. IC Role / Device Role / Timing Role: NPN switch controlling primary-side current flow; driven by optocoupler-isolated PWM controller. Use Value: Low V_CE(sat) and fast t_on/t_f reduce switching and conduction losses, improving efficiency by ≥2% over legacy TO-92 transistors.	Use Scenario: Drives 12 V brushed DC motors in automotive HVAC actuators and office equipment. IC Role / Device Role / Timing Role: Low-side switch interfacing microcontroller GPIO to motor winding; handles stall currents up to 1.2 A. Use Value: Wide SOA and 1.5 A pulse rating prevent secondary breakdown during motor stall, eliminating need for external snubbers.
LED Constant-Current Driver	Relay Driver Interface
Use Scenario: Regulates current in high-brightness LED strings for signage and industrial lighting. IC Role / Device Role / Timing Role: Linear pass element in emitter-follower configuration with feedback resistor network. Use Value: Excellent h_FE linearity ensures stable current regulation across ambient temperatures (−40 °C to +85 °C).	Use Scenario: Interfaces 3.3 V/5 V logic outputs to 12 V/24 V electromagnetic relays in PLC I/O modules. IC Role / Device Role / Timing Role: General-purpose driver transistor providing galvanic isolation between control and load sides. Use Value: 6 V V_(BR)EBO and 160 V V_CEO safely absorb relay coil flyback without clamping diode in space-constrained designs.

DC Power Supply Switching

Small Motor Driver Stage

Use Scenario: Used as main switching transistor in offline AC-DC adapters with <10 W output and discontinuous conduction mode.

IC Role / Device Role / Timing Role: NPN switch controlling primary-side current flow; driven by optocoupler-isolated PWM controller.

Use Value: Low V_CE(sat) and fast t_on/t_f reduce switching and conduction losses, improving efficiency by ≥2% over legacy TO-92 transistors.

Use Scenario: Drives 12 V brushed DC motors in automotive HVAC actuators and office equipment.

IC Role / Device Role / Timing Role: Low-side switch interfacing microcontroller GPIO to motor winding; handles stall currents up to 1.2 A.

Use Value: Wide SOA and 1.5 A pulse rating prevent secondary breakdown during motor stall, eliminating need for external snubbers.

LED Constant-Current Driver

Relay Driver Interface

Use Scenario: Regulates current in high-brightness LED strings for signage and industrial lighting.

IC Role / Device Role / Timing Role: Linear pass element in emitter-follower configuration with feedback resistor network.

Use Value: Excellent h_FE linearity ensures stable current regulation across ambient temperatures (−40 °C to +85 °C).

Use Scenario: Interfaces 3.3 V/5 V logic outputs to 12 V/24 V electromagnetic relays in PLC I/O modules.

IC Role / Device Role / Timing Role: General-purpose driver transistor providing galvanic isolation between control and load sides.

Use Value: 6 V V_(BR)EBO and 160 V V_CEO safely absorb relay coil flyback without clamping diode in space-constrained designs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SC3332T-AA	Higher h_FE range (200–400) and identical absolute ratings; same SC-34A package.	Preferred where lower base drive current is needed (e.g., weak MCU GPIOs); no change to thermal or voltage margins.	Select 2SC3332T-AA when designing for minimal base current or tighter h_FE tolerance; otherwise 2SC3332S-AA offers better cost/performance balance.
MPSA42	Lower I_C (0.5 A), higher V_CEO (300 V), different pinout (E-B-C vs. E-C-B), TO-92 package.	Suitable for higher-voltage, lower-current applications (e.g., CRT deflection, HV sensing); not drop-in due to pinout mismatch.	Use MPSA42 only if V_CEO > 160 V is mandatory and board layout allows pin reassignment; verify SOA derating at elevated T_a.

Compared with 2SC3332T-AA and MPSA42, the 2SC3332S-AA provides optimal trade-off of gain consistency, saturation voltage, and SOA for cost-sensitive 12–24 V switching applications requiring proven reliability in automotive and industrial environments.

Availability

2SC3332S-AA is available at Aetrix Electronics and suitable for DC power supply switching, small motor driver stages, LED constant-current drivers, and relay driver interfaces requiring stable component supply and long-term manufacturability.

Supply support for 2SC3332S-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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.

The 2SC3332 series belongs to onsemi's general-purpose bipolar transistor product line, engineered specifically for reliable, low-cost switching and amplification in space- and thermally constrained through-hole designs.

FAQ

What is the pin configuration of the 2SC3332S-AA?

The 2SC3332S-AA uses the SC-34A (TO-92) package with pin 1 = Emitter, pin 2 = Collector, and pin 3 = Base - confirmed by onsemi's outline drawing No.1334-2/5 and electrical connection diagram. This E-C-B order differs from standard TO-92 E-B-C layouts, so PCB footprint and schematic symbol must reflect this specific pinout to avoid functional failure.

What does the "-AA" suffix indicate in 2SC3332S-AA?

The "-AA" suffix denotes the shipping format: 1,500 pieces per box, Pb-free, and compliant with onsemi's RoHS and green packaging standards. It does not alter electrical specifications versus 2SC3332S; both share identical absolute maximum ratings, electrical characteristics, and package dimensions per datasheet EN1334F.

Is the 2SC3332S-AA suitable for linear amplifier applications?

Yes, the 2SC3332S-AA supports linear operation with verified h_FE linearity and f_T = 120 MHz, but its 700 mW power dissipation and SOA limits require careful thermal design. It is best suited for low-power audio preamplifiers or sensor signal conditioning where V_CE ≤ 10 V and I_C ≤ 100 mA ensure safe junction temperature below 150 °C.

How does the 2SC3332S-AA compare to the 2SC3332T-AA in terms of hFE?

The 2SC3332S-AA has an h_FE range of 140–280 at V_CE = 5 V and I_C = 100 mA (Rank S), while the 2SC3332T-AA is binned to 200–400 (Rank T). Both share identical V_CE(sat), SOA, and thermal specs; the choice depends on required base drive margin and gain stability across production lots.

Can the 2SC3332S-AA replace a 2N2222A in existing designs?

No - although both are NPN TO-92 transistors, the 2SC3332S-AA has E-C-B pinout versus 2N2222A's E-B-C, and higher V_CEO (160 V vs. 40 V) but lower I_C (0.7 A vs. 0.8 A). Direct replacement risks incorrect biasing and potential damage; redesign of footprint and drive network is required.

2SC3332S-AA Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 700 mA

Voltage - Collector Emitter Breakdown (Max):: 160 V

Vce Saturation (Max) @ Ib, Ic:: 400mV @ 2mA, 20mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 100mA, 5V

Power - Max:: 700 mW

Frequency - Transition:: 120MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 3-NP

2SC3332S-AA FAQ

1.How can I place an order for 2SC3332S-AA through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC3332S-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 2SC3332S-AA reliable?

The price and inventory of 2SC3332S-AA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC3332S-AA is usually 5 days.

3.What payment methods are accepted for 2SC3332S-AA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC3332S-AA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC3332S-AA?

2SC3332S-AA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC3332S-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 2SC3332S-AA?

For technical support, including 2SC3332S-AA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC3332S-AA requirements.

6.How does Aetrix verify that 2SC3332S-AA is sourced from the original manufacturer or authorized distributors?

All 2SC3332S-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 2SC3332S-AA meets industry standards.

7.What is the process for return or replacement of 2SC3332S-AA?

All 2SC3332S-AA units undergo pre-shipment inspection (PSI). If there is an issue with 2SC3332S-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 2SC3332S-AA part is unused and in its original packaging.

Return procedure for 2SC3332S-AA:

1.Submit a request within 90 days.

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

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