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

onsemi 2SC3150L

Name: 2SC3150L
Brand: onsemi
SKU: 2SC3150L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SC3150L

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-220-3

Datasheet:: 2SC3150L.pdf

Description:: TRANS NPN 800V 3A TO-220AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SC3150L from SANYO is an NPN triple diffused planar silicon transistor designed for high-voltage switching regulator applications, featuring V_CBO ≥ 900 V, I_C = 3 A, and P_C = 50 W at T_C = 25 °C, commonly used in offline AC-DC power supplies and flyback converters.

For engineers reviewing the 2SC3150L datasheet, pinout, applications, or equivalent options, key selection criteria include breakdown voltage margin, safe operating area (ASO) under pulse conditions, switching time (t_on = 0.1 µs, t_off = 0.3 µs), and TO-220AB package thermal performance in high-reliability industrial power designs.

Technical Context

This device employs a triple diffused planar structure to achieve high V_CBO (900 V min) and wide ASO, enabling robust operation in hard-switched topologies. Its f_T = 15 MHz at V_CE = 10 V, I_C = 0.2 A supports fast turn-on/turn-off transitions critical for >50 kHz SMPS designs.

Switching behavior is characterized under defined test conditions: V_CC = 400 V, R_L = 200 Ω, I_B1 = 0.4 A, I_B2 = –0.8 A, confirming t_on, t_off, and t_f values of 0.1 µs, 0.3 µs, and 0.7 µs respectively - all measured with pulsed conditions (P_W ≤ 300 µs, duty ≤ 10%).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CBO	≥ 900 V - enables use in 400 V AC-input offline converters with sufficient safety margin against transients.
I_C	3 A continuous - supports output power up to ~150 W in single-ended forward/flyback topologies.
P_C	50 W at T_C = 25 °C - requires heatsinking for sustained conduction in high-duty-cycle applications.
f_T	15 MHz - ensures adequate gain-bandwidth for stable base drive in high-frequency switching.
t_on/t_off	0.1 µs / 0.3 µs - minimizes switching losses in 50–100 kHz SMPS designs with controlled base current.
h_FE1	10–40 (ranked) - provides predictable DC current gain for linear base drive design in fixed-frequency regulators.
C_ob	60 pF at V_CB = 10 V, f = 1 MHz - impacts snubber sizing and EMI filter design in high-dV/dt environments.

Pinout & Package

Package: TO-220AB (JEDEC), SC-46 (EIAJ), 3-lead through-hole, isolated tab (collector-connected). Thermal resistance R_θJC = 1.5 °C/W typical.

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Control input terminal	Receives base current to saturate or cut off; requires external current-limiting resistor for safe drive.
2 (Collector)	Main power output terminal	Connected to high-voltage rail (up to 800 V); electrically tied to metal tab for thermal path.
3 (Emitter)	Power return/reference terminal	Serves as common emitter node; must be low-inductance connection to minimize switching noise.

Key Features

Feature	Design Value
High breakdown voltage	V_CBO ≥ 900 V ensures reliable operation in 400 V AC-line applications with surge immunity.
Fast switching speed	t_on/t_off = 0.1/0.3 µs reduces conduction + switching loss trade-off in 50–100 kHz converters.
Wide SOA (Safe Operating Area)	Rated for pulsed I_C = 10 A at V_CE = 800 V - supports overload and startup transient handling.
Triple diffused planar process	Enables precise junction control for consistent h_FE ranking and low leakage across production lots.

Applications

AC-DC Switching Power Supply	Flyback Converter Primary Switch
Use Scenario: 85–265 V AC input, 20–150 W output, fixed-frequency discontinuous conduction mode (DCM) flyback. IC Role / Device Role / Timing Role: Main power switch controlling energy transfer from primary to secondary winding. Use Value: High V_CBO and wide ASO allow direct replacement of older 2SC2625/2SC2688 without derating or snubber redesign.	Use Scenario: Universal input offline adapter with overvoltage/overcurrent protection. IC Role / Device Role / Timing Role: High-side switching element driven by UC3842 or similar PWM controller. Use Value: Fast t_f = 0.7 µs limits tail current during turn-off, reducing dissipation in high-duty-cycle bursts.
DC-DC Boost Regulator	Industrial Motor Drive Gate Driver Stage
Use Scenario: 24 V DC input, 400 V DC output boost converter for photovoltaic interface or battery charging. IC Role / Device Role / Timing Role: Main switching transistor in non-isolated boost topology. Use Value: 50 W power rating and low C_ob enable efficient operation at 100 kHz with minimal gate drive loss.	Use Scenario: High-side driver stage in half-bridge motor control for 100–200 V DC bus systems. IC Role / Device Role / Timing Role: Level-shifted switch controlling gate voltage of main MOSFET/IGBT. Use Value: Robust V_CEO(sus) = 800 V supports operation with 150 V bus spikes without clamping diodes.

AC-DC Switching Power Supply

Flyback Converter Primary Switch

Use Scenario: 85–265 V AC input, 20–150 W output, fixed-frequency discontinuous conduction mode (DCM) flyback.

IC Role / Device Role / Timing Role: Main power switch controlling energy transfer from primary to secondary winding.

Use Value: High V_CBO and wide ASO allow direct replacement of older 2SC2625/2SC2688 without derating or snubber redesign.

Use Scenario: Universal input offline adapter with overvoltage/overcurrent protection.

IC Role / Device Role / Timing Role: High-side switching element driven by UC3842 or similar PWM controller.

Use Value: Fast t_f = 0.7 µs limits tail current during turn-off, reducing dissipation in high-duty-cycle bursts.

DC-DC Boost Regulator

Industrial Motor Drive Gate Driver Stage

Use Scenario: 24 V DC input, 400 V DC output boost converter for photovoltaic interface or battery charging.

IC Role / Device Role / Timing Role: Main switching transistor in non-isolated boost topology.

Use Value: 50 W power rating and low C_ob enable efficient operation at 100 kHz with minimal gate drive loss.

Use Scenario: High-side driver stage in half-bridge motor control for 100–200 V DC bus systems.

IC Role / Device Role / Timing Role: Level-shifted switch controlling gate voltage of main MOSFET/IGBT.

Use Value: Robust V_CEO(sus) = 800 V supports operation with 150 V bus spikes without clamping diodes.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage bipolar switching transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SC3150 (standard grade)	No 'L' suffix; h_FE1 rank not specified per ordering number EN1069C - broader gain spread (10–100).	Less suitable for designs requiring tight base drive current consistency across production units.	Select 2SC3150L when h_FE binning (10–40) is required for predictable base resistor sizing.
2SC3854	V_CBO = 1000 V, I_C = 3 A, but f_T = 8 MHz - slower switching, higher C_ob (100 pF).	Better for lower-frequency (<30 kHz), higher-voltage applications where SOA dominates over speed.	Choose 2SC3854 only if V_CBO margin > 1000 V is mandatory and switching loss is secondary.

Compared with 2SC3150L, the standard 2SC3150 offers wider h_FE variation and less predictable base drive, while 2SC3854 trades switching speed for higher voltage rating - making 2SC3150L optimal for cost-sensitive, medium-frequency, high-reliability 400 V AC-input SMPS where gain consistency and fast turn-off matter.

Availability

2SC3150L is available at Aetrix Electronics and suitable for AC-DC power supplies, flyback converters, and industrial DC-DC boost regulators requiring stable component supply and long-term obsolescence management.

Supply support for 2SC3150L 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 specializing in power devices, analog ICs, and optoelectronics before its acquisition by Panasonic in 2012.

The 2SC3150L belongs to SANYO's high-voltage bipolar transistor product line, engineered specifically for ruggedized switching regulator applications demanding high breakdown voltage, wide SOA, and repeatable gain in industrial power conversion.

FAQ

What is the collector-emitter sustaining voltage (V_CEO(sus)) rating for the 2SC3150L?

The 2SC3150L has a rated V_CEO(sus) = 800 V under specified test conditions (I_C = 3 A, I_B = 0.2 A, pulse width ≤ 500 µs). This value reflects guaranteed blocking capability during transient overloads in switching regulator operation, distinct from DC-rated V_CEO.

How does the 'L' suffix in 2SC3150L affect its h_FE specification compared to the base 2SC3150?

The 'L' suffix denotes a binned h_FE1 range of 10–40 at V_CE = 5 V, I_C = 0.2 A, ensuring tighter gain consistency for predictable base drive design. The standard 2SC3150 has no h_FE ranking - its gain may vary from 10 to 100, complicating fixed-resistor bias networks.

Can the 2SC3150L be used as a direct replacement for the 2SC2625 in existing flyback designs?

Yes - the 2SC3150L matches or exceeds the 2SC2625's key ratings: V_CBO (900 V vs. 800 V), I_C (3 A vs. 2 A), and P_C (50 W vs. 40 W). Its faster switching and wider SOA often improve efficiency and reliability without PCB changes, though base resistor recalculations may be needed due to h_FE differences.

What is the maximum allowable junction temperature (T_j) for continuous operation of the 2SC3150L?

The 2SC3150L has a maximum junction temperature rating of 150 °C. Operation above this limit risks permanent degradation. Derating is required above T_C = 25 °C - for example, at T_C = 80 °C, maximum allowable P_C drops to ~25 W based on R_θJC = 1.5 °C/W and thermal margin requirements.

Is the metal tab of the 2SC3150L package electrically isolated or connected to a specific terminal?

The metal tab of the 2SC3150L in TO-220AB package is internally connected to the collector terminal (Pin 2). It is not electrically isolated - proper mounting with insulating hardware (e.g., mica washer + shoulder washer) is required when mounting to a grounded heatsink to prevent short circuits.

2SC3150L Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-220-3

Packaging:: Bulk

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 3 A

Voltage - Collector Emitter Breakdown (Max):: 800 V

Vce Saturation (Max) @ Ib, Ic:: 2V @ 300mA, 1.5A

Current - Collector Cutoff (Max):: 10µA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 10 @ 200mA, 5V

Power - Max:: 50 W

Frequency - Transition:: 15MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB

2SC3150L FAQ

1.How can I place an order for 2SC3150L through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC3150L 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 2SC3150L reliable?

The price and inventory of 2SC3150L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC3150L is usually 5 days.

3.What payment methods are accepted for 2SC3150L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC3150L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC3150L?

2SC3150L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC3150L 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 2SC3150L?

For technical support, including 2SC3150L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC3150L requirements.

6.How does Aetrix verify that 2SC3150L is sourced from the original manufacturer or authorized distributors?

All 2SC3150L 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 2SC3150L meets industry standards.

7.What is the process for return or replacement of 2SC3150L?

All 2SC3150L units undergo pre-shipment inspection (PSI). If there is an issue with 2SC3150L, 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 2SC3150L part is unused and in its original packaging.

Return procedure for 2SC3150L:

1.Submit a request within 90 days.

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

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