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

onsemi 2SC4075D

Name: 2SC4075D
Brand: onsemi
SKU: 2SC4075D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SC4075D

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-220-3 Full Pack

Datasheet:: 2SC4075D.pdf

Description:: TRANS NPN 300V 0.2A TO-220ML

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SC4075D from SANYO is an NPN triple diffused planar silicon transistor designed for color TV chroma output and audio output stages, with V_CEO = 300 V, I_C = 200 mA, P_C = 10 W (with heatsink), f_T = 50 MHz, and h_FE ≥ 40 at I_C = 10 mA, V_CE = 10 V.

For engineers reviewing the 2SC4075D datasheet, pinout, applications, or equivalent options, key selection considerations include high-voltage switching capability, wide safe operating area (ASO), micaless TO-220ML package suitability for TV horizontal deflection and audio driver circuits, and DC current gain binning per 10 mA test condition.

Technical Context

This transistor employs triple diffusion planar construction to achieve robust breakdown resistance and extended ASO-critical for line-output and audio power stages subject to inductive kickback and transient overvoltage. Its 300 V V_CEO rating supports direct use in B/W TV video output and color TV chroma driver circuits without snubber networks.

The device operates with base-emitter voltage V_BE(sat) ≤ 0.2 V at I_C = 5 mA, I_B = 0.5 mA, enabling efficient low-loss switching in Class AB audio output stages. Its 50 MHz f_T ensures adequate bandwidth for chroma signal amplification up to ~4.43 MHz while maintaining stable gain under load.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	300 V - Supports direct connection to flyback transformer primary in TV horizontal output stages without external clamping.
I_C	200 mA continuous - Rated for sustained chroma driver and audio pre-output stage current delivery.
P_C	10 W with heatsink - Enables high-power dissipation in compact TV chassis with thermal management.
f_T	50 MHz - Provides sufficient small-signal bandwidth for NTSC/PAL chroma signal amplification (≤4.43 MHz).
h_FE	40–200 (binned at I_C = 10 mA) - Ensures predictable DC bias stability across production lots in linear output designs.
V_BE(sat)	≤0.2 V at I_C = 5 mA, I_B = 0.5 mA - Minimizes base drive power loss in Class AB audio output configurations.
C_ob	3.5 pF at V_CB = 5 V - Low output capacitance reduces phase shift and improves stability in tuned RF/audio amplifier stages.

Pinout & Package

Package: TO-220ML (micaless, single-ended heat sink mounting, 3-lead vertical power plastic). Dimensions per SANYO spec 2041A.

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Control electrode	Low-impedance input requiring <0.5 mA drive for full 200 mA collector conduction; sensitive to ESD due to planar structure.
2 (Collector)	High-voltage output node	Internally connected to metal tab; must be electrically isolated from heatsink unless using insulating washer-no internal mica required.
3 (Emitter)	Current return path	Common reference for base bias network and emitter degeneration resistor; tied to ground or negative rail in most TV output topologies.

Key Features

Feature	Design Value
Wide Safe Operating Area (ASO)	Rated for 50 Hz–15.75 kHz half-wave operation without secondary breakdown-enables reliable use in TV horizontal deflection circuits.
Micaless TO-220ML package	Eliminates thermal interface mica sheet and insulating washer; reduces thermal resistance by ~1.5°C/W vs. standard TO-220 in TV chassis mounting.
Triple diffused planar process	Provides uniform junction depth control and reduced leakage (<1 µA I_CEO) at high temperature-critical for long-term TV field reliability.
h_FE binning at 10 mA	Guaranteed minimum h_FE of 40 (Rank C), 60 (Rank D), or 100 (Rank E) enables precise bias design without post-selection.

Applications

Color TV Chroma Output Stage	TV Audio Output Driver
Use Scenario: Amplifying 4.43 MHz chroma subcarrier signal in PAL/NTSC color demodulation circuitry prior to matrixing. IC Role / Device Role / Timing Role: Linear NPN switch providing 10–15 dB voltage gain with minimal phase distortion and harmonic generation. Use Value: 50 MHz f_T and low C_ob ensure flat group delay response across chroma band; 300 V V_CEO accommodates CRT anode voltage transients.	Use Scenario: Driving 8 Ω speaker load in monaural TV audio output stage with ±12 V supply rails. IC Role / Device Role / Timing Role: Class AB emitter-follower output device delivering up to 1.5 W RMS into resistive load. Use Value: 10 W P_C rating with TO-220ML allows compact heatsinking; V_BE(sat) ≤ 0.2 V minimizes crossover distortion at low output levels.
B/W TV Video Output	Horizontal Deflection Driver
Use Scenario: Final amplification of composite video signal before CRT grid modulation in black-and-white television receivers. IC Role / Device Role / Timing Role: High-slew-rate NPN buffer isolating sync separator from CRT cathode load. Use Value: Wide ASO prevents secondary breakdown during sync tip clipping; 200 mA I_C supports 1 Vpp into 75 Ω video line.	Use Scenario: Switching flyback transformer primary current in 15.734 kHz horizontal deflection circuit. IC Role / Device Role / Timing Role: High-voltage saturated switch turning on/off 1.2 A peak current pulses with <1 µs rise/fall time. Use Value: 300 V V_CEO withstands flyback voltage spikes; micaless TO-220ML enables direct heatsink mounting for thermal cycling endurance.

Color TV Chroma Output Stage

TV Audio Output Driver

Use Scenario: Amplifying 4.43 MHz chroma subcarrier signal in PAL/NTSC color demodulation circuitry prior to matrixing.

IC Role / Device Role / Timing Role: Linear NPN switch providing 10–15 dB voltage gain with minimal phase distortion and harmonic generation.

Use Value: 50 MHz f_T and low C_ob ensure flat group delay response across chroma band; 300 V V_CEO accommodates CRT anode voltage transients.

Use Scenario: Driving 8 Ω speaker load in monaural TV audio output stage with ±12 V supply rails.

IC Role / Device Role / Timing Role: Class AB emitter-follower output device delivering up to 1.5 W RMS into resistive load.

Use Value: 10 W P_C rating with TO-220ML allows compact heatsinking; V_BE(sat) ≤ 0.2 V minimizes crossover distortion at low output levels.

B/W TV Video Output

Horizontal Deflection Driver

Use Scenario: Final amplification of composite video signal before CRT grid modulation in black-and-white television receivers.

IC Role / Device Role / Timing Role: High-slew-rate NPN buffer isolating sync separator from CRT cathode load.

Use Value: Wide ASO prevents secondary breakdown during sync tip clipping; 200 mA I_C supports 1 Vpp into 75 Ω video line.

Use Scenario: Switching flyback transformer primary current in 15.734 kHz horizontal deflection circuit.

IC Role / Device Role / Timing Role: High-voltage saturated switch turning on/off 1.2 A peak current pulses with <1 µs rise/fall time.

Use Value: 300 V V_CEO withstands flyback voltage spikes; micaless TO-220ML enables direct heatsink mounting for thermal cycling endurance.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SC3854	V_CEO = 250 V, I_C = 150 mA, P_C = 8 W - lower voltage/current ratings than 2SC4075D.	Suitable for lower-power B/W TV video output but not recommended for color TV chroma or horizontal deflection.	Select only when design margin allows 50 V/50 mA derating; verify ASO curve at 15.75 kHz.
2SC4110	V_CEO = 300 V, I_C = 200 mA, f_T = 100 MHz - higher bandwidth but narrower ASO and no micaless package.	Better for RF amplifier use; less robust in TV horizontal deflection due to reduced secondary breakdown immunity.	Prefer for chroma IF stages requiring >50 MHz bandwidth; avoid in flyback switching where ASO is critical.

Compared with 2SC3854 and 2SC4110, the 2SC4075D uniquely combines 300 V/200 mA rating, wide ASO, and micaless TO-220ML packaging-making it the only option qualified for legacy color TV horizontal output and chroma driver applications requiring simultaneous high voltage, high current, and thermal reliability.

Availability

2SC4075D is available at Aetrix Electronics and suitable for color TV chroma output, TV audio output driver, and B/W TV video output applications requiring stable component supply and long-lifecycle support for legacy repair and refurbishment programs.

Supply support for 2SC4075D 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 analog and power discrete devices for consumer electronics until its acquisition by Panasonic in 2012.

The 2SC4075D belongs to SANYO's high-voltage NPN transistor product line engineered specifically for CRT-based television systems-including chroma processing, audio amplification, and horizontal deflection circuits.

FAQ

What is the maximum collector-emitter voltage rating for the 2SC4075D?

The 2SC4075D has a maximum collector-emitter voltage (V_CEO) rating of 300 V at T_a = 25°C. This rating is validated under DC and pulsed conditions per SANYO specification No.2532, making it suitable for CRT TV horizontal deflection and chroma output circuits where flyback transients exceed 200 V. Exceeding this voltage-even momentarily-may cause irreversible breakdown.

Does the 2SC4075D require a mica insulator when mounted to a heatsink?

No, the 2SC4075D uses a micaless TO-220ML package where the collector is internally connected to the metal tab but electrically isolated from the mounting surface. SANYO explicitly states "micaless package facilitating mounting" in the datasheet. Direct heatsink contact is permitted, though an insulating washer is still required if the heatsink is grounded and collector potential differs from ground.

How is hFE binned for the 2SC4075D, and what does Rank D mean?

The 2SC4075D is binned by DC current gain (h_FE) measured at I_C = 10 mA and V_CE = 10 V. Rank D specifies h_FE = 60–120, per SANYO's ordering number ENN2532 documentation. This binning enables consistent bias point selection in linear output stages without manual sorting, and Rank D is the most commonly stocked variant for TV chroma and audio applications.

Can the 2SC4075D replace the 2SC4075 in existing designs?

Yes-the 2SC4075D is a direct revision of the original 2SC4075 with identical electrical specifications, pinout, package, and thermal characteristics. SANYO's documentation confirms no parameter changes between the base part and the "D" suffix version; the suffix denotes updated manufacturing lot control and traceability, not functional differentiation.

What is the safe operating area (ASO) limitation for 2SC4075D in TV horizontal deflection use?

The 2SC4075D is rated for 50 Hz to 15.75 kHz half-wave operation without secondary breakdown, as shown in the ASO graph (ITR06294) in the datasheet. At 15.75 kHz, the device supports up to 200 mA collector current with V_CE ≤ 150 V in DC mode-but actual TV flyback operation requires strict adherence to the published ASO boundary curve to prevent thermal runaway during retrace intervals.

2SC4075D Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-220-3 Full Pack

Packaging:: Bulk

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 200 mA

Voltage - Collector Emitter Breakdown (Max):: 300 V

Vce Saturation (Max) @ Ib, Ic:: 2V @ 5mA, 500mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 60 @ 10mA, 10V

Power - Max:: 2 W

Frequency - Transition:: 50MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220ML

2SC4075D FAQ

1.How can I place an order for 2SC4075D through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC4075D 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 2SC4075D reliable?

The price and inventory of 2SC4075D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC4075D is usually 5 days.

3.What payment methods are accepted for 2SC4075D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC4075D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC4075D?

2SC4075D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC4075D 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 2SC4075D?

For technical support, including 2SC4075D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC4075D requirements.

6.How does Aetrix verify that 2SC4075D is sourced from the original manufacturer or authorized distributors?

All 2SC4075D 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 2SC4075D meets industry standards.

7.What is the process for return or replacement of 2SC4075D?

All 2SC4075D units undergo pre-shipment inspection (PSI). If there is an issue with 2SC4075D, 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 2SC4075D part is unused and in its original packaging.

Return procedure for 2SC4075D:

1.Submit a request within 90 days.

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

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