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

onsemi 2SC3332S

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

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Part No.:: 2SC3332S

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: 2SC3332S.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SC3332S from onsemi is an NPN bipolar junction transistor (BJT) in TO-92 (SC-34A) package, rated for 160 V V_CEO, 0.7 A I_C, and 700 mW P_C, with low 0.12 V typical V_CE(sat) at I_C = 250 mA / I_B = 25 mA. It delivers high h_FE linearity (140–280, Rank S), 120 MHz f_T, and wide SOA-used in linear amplification and switching circuits in power supplies and audio preamplifiers.

For engineers reviewing the 2SC3332S datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CE(sat) performance at 250 mA, h_FE binning consistency (Rank S), SOA robustness under pulse conditions, and JEDEC TO-92 mechanical compatibility with legacy board layouts.

Technical Context

This NPN BJT 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 120 MHz f_T supports medium-frequency amplification up to ~10 MHz small-signal gain bandwidth.

The device features a wide safe operating area (SOA), highly resistant to secondary breakdown, validated under pulsed conditions (I_CP = 1.5 A, PW = 20 μs, D.C. ≤ 1%). V_CE(sat) remains stable at 0.12–0.4 V across production lots when biased at I_C/I_B = 10.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	160 V - Supports DC supply rails up to ±80 V in Class-A/B amplifier stages without breakdown risk.
I_C	0.7 A continuous - Suitable for driver-stage current delivery in discrete power amplifier output sections.
V_CE(sat)	0.12 V (typ) @ 250 mA/25 mA - Minimizes conduction loss and thermal rise in saturated-switch applications.
h_FE	140–280 (Rank S) - Ensures predictable DC bias stability in emitter-follower and current-source configurations.
f_T	120 MHz - Enables stable small-signal voltage gain up to ~10 MHz before phase margin erosion.
C_ob	8 pF @ 10 V - Limits Miller capacitance impact on high-frequency stage bandwidth and stability.
t_on/t_f	50 ns / 60 ns - Compatible with PWM switching up to ~3 MHz in low-power SMPS control loops.

Pinout & Package

2SC3332S is housed in a through-hole TO-92 (JEDEC TO-226AA, SC-34A, SOT-54) plastic package with 0.269 g mass and standard lead spacing. Pin 1 = Emitter, Pin 2 = Collector, Pin 3 = Base - verified per onsemi outline drawing EN1334F and marking diagram.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current exit node for NPN operation	Connected to ground or low-impedance return path; determines common-emitter/common-base topology choice.
2 (Collector)	Current entry node under forward active mode	Drives load impedance; must be decoupled from supply rail to suppress V_CE transients during switching.
3 (Base)	Control terminal for minority-carrier injection	Requires current-limited drive (e.g., R_B = 333 Ω) to ensure I_C/I_B = 10 saturation condition.

Key Features

Feature	Design Value
High V_(BR)CBO	180 V - Enables use in 120 VAC line-derived supplies without derating for surge transients.
Wide SOA	Validated for single-pulse I_CP = 1.5 A @ 20 μs - Supports short-circuit tolerant output stages in analog power modules.
MBIT process	Improved h_FE linearity and reduced parameter spread - Reduces need for manual h_FE matching in differential pairs.
Low V_CE(sat)	0.12 V typ @ I_C = 250 mA - Lowers power dissipation by >30% vs. standard general-purpose BJTs at same current.

Applications

Audio Preamp Stage	Linear Voltage Regulator Pass Element
Use Scenario: Low-noise, high-linearity small-signal amplification in microphone preamplifier input stages. IC Role / Device Role / Timing Role: NPN BJT configured as common-emitter amplifier with emitter degeneration for gain stability. Use Value: 140–280 h_FE binning ensures consistent bias point across production units; 8 pF C_ob preserves high-frequency response beyond 20 kHz.	Use Scenario: Discrete pass transistor in adjustable linear regulators powering analog sensor signal chains. IC Role / Device Role / Timing Role: Series pass element controlling output voltage via base current modulation from error amplifier. Use Value: 0.12 V typical V_CE(sat) minimizes dropout voltage and thermal load at 500 mA load current.
DC-DC Converter Switch Driver	Relay/LED Load Switch
Use Scenario: Gate/base driver for external MOSFETs or IGBTs in isolated flyback or forward converter control logic. IC Role / Device Role / Timing Role: Saturated switch providing fast turn-on/turn-off of power device gate capacitance. Use Value: 50 ns t_on and 60 ns t_f enable clean 3 MHz PWM edge transitions; 1.5 A pulse rating handles transient gate charge demands.	Use Scenario: Direct switching of 12 V/500 mA inductive (relay) or resistive (LED array) loads in industrial control I/O modules. IC Role / Device Role / Timing Role: Low-side saturated switch controlled by microcontroller GPIO with series base resistor. Use Value: Verified 0.7 A continuous I_C and 160 V V_CEO tolerate relay coil flyback spikes without snubber circuitry.

Audio Preamp Stage

Linear Voltage Regulator Pass Element

Use Scenario: Low-noise, high-linearity small-signal amplification in microphone preamplifier input stages.

IC Role / Device Role / Timing Role: NPN BJT configured as common-emitter amplifier with emitter degeneration for gain stability.

Use Value: 140–280 h_FE binning ensures consistent bias point across production units; 8 pF C_ob preserves high-frequency response beyond 20 kHz.

Use Scenario: Discrete pass transistor in adjustable linear regulators powering analog sensor signal chains.

IC Role / Device Role / Timing Role: Series pass element controlling output voltage via base current modulation from error amplifier.

Use Value: 0.12 V typical V_CE(sat) minimizes dropout voltage and thermal load at 500 mA load current.

DC-DC Converter Switch Driver

Relay/LED Load Switch

Use Scenario: Gate/base driver for external MOSFETs or IGBTs in isolated flyback or forward converter control logic.

IC Role / Device Role / Timing Role: Saturated switch providing fast turn-on/turn-off of power device gate capacitance.

Use Value: 50 ns t_on and 60 ns t_f enable clean 3 MHz PWM edge transitions; 1.5 A pulse rating handles transient gate charge demands.

Use Scenario: Direct switching of 12 V/500 mA inductive (relay) or resistive (LED array) loads in industrial control I/O modules.

IC Role / Device Role / Timing Role: Low-side saturated switch controlled by microcontroller GPIO with series base resistor.

Use Value: Verified 0.7 A continuous I_C and 160 V V_CEO tolerate relay coil flyback spikes without snubber circuitry.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SC2229A	V_CEO = 120 V, I_C = 0.5 A, h_FE = 70–240 - lower voltage/current ratings, no Rank binning	Limited to ≤100 V supply rails; unsuitable for 160 V SOA-critical designs	Select only if design operates below 100 V and requires cost-sensitive drop-in with relaxed SOA.
MPSA42	V_CEO = 300 V, I_C = 0.5 A, V_CE(sat) = 0.5 V (typ) - higher breakdown but higher saturation loss	Better for HV flyback snubbers; less efficient in low-dropout linear regulation	Prefer when V_CEO > 200 V is mandatory; avoid where V_CE(sat) < 0.2 V is required at ≥250 mA.

Compared with 2SC3332S, 2SC2229A offers lower cost but sacrifices 40 V V_CEO headroom and SOA robustness, while MPSA42 trades 0.38 V higher V_CE(sat) for 140 V extra breakdown margin-making 2SC3332S optimal for 120–160 V, medium-current linear/switching roles demanding low loss and predictable h_FE.

Availability

2SC3332S is available at Aetrix Electronics and suitable for audio preamplifiers, linear voltage regulators, DC-DC converter drivers, and relay/LED load switches requiring stable component supply and TO-92 mechanical compatibility.

Supply support for 2SC3332S 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 innovation for automotive, industrial, cloud, and IoT systems.

The 2SC3332S belongs to onsemi's general-purpose bipolar transistor product line, engineered for reliability-critical linear amplification and switching in industrial power management and analog signal conditioning.

FAQ

What is the hFE binning specification for 2SC3332S?

The 2SC3332S is Rank S, with DC current gain h_FE specified from 140 to 280 at V_CE = 5 V and I_C = 100 mA. This binning is laser-marked on the device body as "S" and confirmed in the onsemi datasheet No. 1334. The 2SC3332S does not share the broader 200–400 h_FE range of the 2SC3332T variant.

Is 2SC3332S RoHS compliant and lead-free?

Yes, the 2SC3332S-AA variant is explicitly marked "Pb Free" in the ordering information table of the official datasheet. All 2SC3332S devices shipped by onsemi since 2013 meet RoHS Directive 2011/65/EU requirements, with lead content below 0.1 wt% in homogeneous materials.

What is the maximum allowable pulse current for 2SC3332S?

The absolute maximum collector current pulse rating for 2SC3332S is 1.5 A, defined at pulse width = 20 μs and duty cycle ≤ 1%, per the Absolute Maximum Ratings table. This value is validated under single-pulse test conditions and must not be exceeded even momentarily without derating for ambient temperature or PCB copper area.

Does 2SC3332S have the same pinout as standard TO-92 transistors?

Yes, the 2SC3332S uses JEDEC-standard TO-92 (TO-226AA) pinout: Pin 1 = Emitter, Pin 2 = Collector, Pin 3 = Base - matching industry-standard NPN TO-92 devices like PN2222A and BC547. This allows direct layout reuse in existing TO-92 footprints without modification.

What is the thermal resistance junction-to-ambient for 2SC3332S?

The datasheet does not specify R_θJA directly, but the derating curve (ITR03230) shows 700 mW maximum dissipation at T_A = 25°C, falling linearly to zero at T_A = 150°C. From this, R_θJA is calculated as 179°C/W - consistent with typical TO-92 packages with minimal copper pour. For reliable operation above 25°C, heatsinking or airflow must be added.

2SC3332S Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Bulk

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 @ 25mA, 250mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 140 @ 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 FAQ

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

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

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

3.What payment methods are accepted for 2SC3332S?

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC3332S?

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

Once your 2SC3332S 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?

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

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

All 2SC3332S 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 meets industry standards.

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

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

Return procedure for 2SC3332S:

1.Submit a request within 90 days.

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

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