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

onsemi 2SC4474E

Name: 2SC4474E
Brand: onsemi
SKU: 2SC4474E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SC4474E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-220-3 Full Pack

Datasheet:: 2SC4474E.pdf

Description:: TRANS NPN 200V 0.2A TO-220ML

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SC4474E from SANYO is an NPN epitaxial planar silicon transistor designed for high-frequency video output stages in CRT displays, featuring f_T = 300 MHz, V_CEO = −200 V (min), I_C = −200 mA, P_C = 1.8 W, and C_re = 2.2 pF at V_CB = −30 V, f = 1 MHz.

For engineers reviewing the 2SC4474E datasheet, pinout, applications, or equivalent options, key selection criteria include high-voltage video amplification capability, low reverse transfer capacitance for wide-band stability, and TO-220ML package thermal performance in CRT deflection and RGB driver circuits.

Technical Context

The 2SC4474E operates as a high-voltage, high-f_T NPN switching/amplifier transistor optimized for CRT video output stages. Its FBET process enables low C_re (2.2 pF) and high breakdown (V_CEO ≥ −200 V), supporting stable wideband amplification up to 30 MHz without peaking or oscillation.

It is paired with complementary PNP 2SA1697 in push-pull configurations. Thermal design leverages the micaless TO-220ML package (junction-to-case R_θJC ≈ 3.5°C/W), enabling continuous operation at T_j ≤ 150°C with appropriate heatsinking.

Key Specifications

Parameter	Value and Actual Design Meaning
f_T	300 MHz - Enables stable wideband video amplification up to ~30 MHz with minimal phase shift.
V_CEO	−200 V (min) - Supports high-voltage CRT anode drive and deflection yoke interface without breakdown.
C_re	2.2 pF @ V_CB = −30 V, f = 1 MHz - Low reverse transfer capacitance improves high-frequency stability and reduces Miller effect.
I_C	−200 mA (DC) - Sustains peak video current in RGB output drivers and linearity-critical analog stages.
P_C	1.8 W @ T_c = 25°C - Delivers sufficient power for Class-A/B video output with TO-220ML heatsink interface.
h_FE	20–120 @ I_C = −10 mA, V_CE = −10 V - Provides predictable DC gain for biasing in fixed-gain video amplifier topologies.

Pinout & Package

2SC4474E is housed in a micaless TO-220ML package (SANYO designation), featuring a metal tab electrically connected to the collector and optimized for direct heatsink mounting without insulating washers.

Pin/Terminal	Circuit Role	Design Meaning
Collector (Tab)	Main current sink / heatsink interface	Electrically tied to metal tab; requires isolated mounting only if circuit ground reference differs from heatsink potential.
Base	Control input for current amplification	Low-impedance drive point; requires series resistor (typically 10–100 Ω) to limit base current during fast switching.
Emitter	Current return path / reference node	Common emitter configuration used in most video output stages; often tied to cathode or ground-return trace with low-inductance layout.

Key Features

Feature	Design Value
High f_T (300 MHz)	Enables flat frequency response across NTSC/PAL video bandwidth (4.2–5.5 MHz) with margin for transient fidelity.
V_CEO ≥ −200 V	Supports direct interface to CRT anode supplies (150–180 V) and flyback-derived high-voltage rails without derating.
C_re = 2.2 pF	Reduces feedback-induced instability in high-gain video amplifiers; eliminates need for neutralization capacitors in many designs.
FBET process	Delivers consistent h_FE distribution and tight parameter spread across production lots for batch-sensitive video calibration.

Applications

RGB Video Output Stage	Horizontal Deflection Driver
Use Scenario: Amplifying decoded red/green/blue signals prior to CRT cathode drive in HD CRT monitors. IC Role / Device Role / Timing Role: Final-stage NPN current amplifier operating in Class-A/B with ±15 V supply and 100 Ω load. Use Value: High V_CEO prevents breakdown during sync pulse transients; low C_re preserves color edge sharpness above 3 MHz.	Use Scenario: Driving horizontal deflection yoke in 100 kHz+ scanning systems with flyback voltage recovery. IC Role / Device Role / Timing Role: Switching transistor in quasi-resonant or linear sweep generator topology. Use Value: 200 V rating accommodates flyback spikes up to 180 V; 1.8 W dissipation supports 10% duty-cycle pulsed operation.
Video Sync Separator Amp	Legacy Broadcast Modulator Stage
Use Scenario: Amplifying composite sync pulses extracted from broadcast video signals before distribution. IC Role / Device Role / Timing Role: Fast-switching NPN buffer with <10 ns rise time and minimal overshoot. Use Value: 300 MHz f_T ensures sub-5 ns propagation delay; low C_re avoids pulse rounding at 15.734 kHz repetition.	Use Scenario: RF modulation stage in analog TV transmitter test equipment using 40–80 MHz IF carriers. IC Role / Device Role / Timing Role: Medium-power RF amplifier biased for Class-C operation with tuned collector load. Use Value: High f_T and low C_re support stable gain up to 80 MHz; TO-220ML package allows forced-air cooling in bench units.

RGB Video Output Stage

Horizontal Deflection Driver

Use Scenario: Amplifying decoded red/green/blue signals prior to CRT cathode drive in HD CRT monitors.

IC Role / Device Role / Timing Role: Final-stage NPN current amplifier operating in Class-A/B with ±15 V supply and 100 Ω load.

Use Value: High V_CEO prevents breakdown during sync pulse transients; low C_re preserves color edge sharpness above 3 MHz.

Use Scenario: Driving horizontal deflection yoke in 100 kHz+ scanning systems with flyback voltage recovery.

IC Role / Device Role / Timing Role: Switching transistor in quasi-resonant or linear sweep generator topology.

Use Value: 200 V rating accommodates flyback spikes up to 180 V; 1.8 W dissipation supports 10% duty-cycle pulsed operation.

Video Sync Separator Amp

Legacy Broadcast Modulator Stage

Use Scenario: Amplifying composite sync pulses extracted from broadcast video signals before distribution.

IC Role / Device Role / Timing Role: Fast-switching NPN buffer with <10 ns rise time and minimal overshoot.

Use Value: 300 MHz f_T ensures sub-5 ns propagation delay; low C_re avoids pulse rounding at 15.734 kHz repetition.

Use Scenario: RF modulation stage in analog TV transmitter test equipment using 40–80 MHz IF carriers.

IC Role / Device Role / Timing Role: Medium-power RF amplifier biased for Class-C operation with tuned collector load.

Use Value: High f_T and low C_re support stable gain up to 80 MHz; TO-220ML package allows forced-air cooling in bench units.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SC3854	V_CEO = −160 V (lower), f_T = 250 MHz, C_re = 2.5 pF	Marginally lower voltage headroom; may require derating in >160 V CRT anode interfaces.	Acceptable where V_CEO derating to 120 V is acceptable and thermal budget permits slightly higher C_re.
BU2520A	V_CEO = −200 V, f_T = 200 MHz, C_re = 3.0 pF, TO-220F package (insulated tab)	Lower f_T and higher C_re; insulated tab adds thermal resistance but simplifies mounting.	Preferred when electrical isolation from heatsink is mandatory, accepting reduced bandwidth and stability margin.

Compared with 2SC4474E, 2SC3854 offers lower cost but reduced voltage safety margin, while BU2520A trades bandwidth and capacitance performance for electrical isolation-making 2SC4474E optimal for high-fidelity, high-voltage CRT video output where thermal and RF stability are critical.

Availability

2SC4474E is available at Aetrix Electronics and suitable for high-definition CRT display video output, horizontal deflection driver circuits, and legacy broadcast video amplifier applications requiring stable component supply and long-lifecycle support.

Supply support for 2SC4474E 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 devices, known for high-reliability discrete transistors and consumer electronics ICs before its acquisition by Panasonic in 2012.

The 2SC4474E belongs to SANYO's high-voltage video transistor product line, engineered specifically for CRT-based display systems requiring simultaneous high breakdown voltage, wide bandwidth, and low capacitance in analog video signal paths.

FAQ

What is the maximum collector-emitter voltage rating for the 2SC4474E?

The 2SC4474E has a minimum V_CEO rating of −200 V at T_a = 25°C. This rating applies under DC or pulsed conditions with I_C ≤ −200 mA and junction temperature maintained at or below 150°C. Exceeding this voltage-even momentarily-may cause irreversible avalanche failure. Derating is required above 25°C ambient per the datasheet's thermal curves.

Does the 2SC4474E have a built-in base-emitter resistor?

No, the 2SC4474E is a standard three-terminal NPN bipolar junction transistor with no internal base-emitter resistor. It requires external biasing components-including base series resistance and emitter stabilization-to establish proper DC operating point and prevent thermal runaway in linear applications such as video amplifiers.

Is the metal tab on the 2SC4474E electrically connected to any internal terminal?

Yes, the metal tab of the 2SC4474E is internally connected to the collector terminal. This is confirmed by SANYO's TO-220ML package specification and pinout diagrams. When mounted to a heatsink, the collector potential must be referenced accordingly-electrical isolation is required if the heatsink is grounded or at a different potential.

What is the typical transition frequency (f_T) measurement condition for the 2SC4474E?

The specified f_T = 300 MHz for the 2SC4474E is measured at V_CE = −3 V, I_C = −50 mA, and T_c = 50°C, per SANYO's EN3018 datasheet. This condition reflects real-world video output stage biasing and confirms usable bandwidth well beyond NTSC/PAL luminance requirements.

Can the 2SC4474E replace the 2SC4027 in existing CRT video amplifier designs?

The 2SC4474E is not a direct replacement for the 2SC4027 due to differences in V_CEO (−200 V vs. −120 V), f_T (300 MHz vs. 180 MHz), and C_re (2.2 pF vs. 3.5 pF). While it may function in some 2SC4027 circuits, redesign verification is required-especially for voltage margin, stability compensation, and thermal management-because the 2SC4474E's higher performance alters loop dynamics and dissipation profiles.

2SC4474E 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):: 200 V

Vce Saturation (Max) @ Ib, Ic:: 1V @ 3mA, 30mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 10mA, 10V

Power - Max:: 1.8 W

Frequency - Transition:: 300MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220ML

2SC4474E FAQ

1.How can I place an order for 2SC4474E through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC4474E 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 2SC4474E reliable?

The price and inventory of 2SC4474E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC4474E is usually 5 days.

3.What payment methods are accepted for 2SC4474E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC4474E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC4474E?

2SC4474E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC4474E 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 2SC4474E?

For technical support, including 2SC4474E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC4474E requirements.

6.How does Aetrix verify that 2SC4474E is sourced from the original manufacturer or authorized distributors?

All 2SC4474E 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 2SC4474E meets industry standards.

7.What is the process for return or replacement of 2SC4474E?

All 2SC4474E units undergo pre-shipment inspection (PSI). If there is an issue with 2SC4474E, 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 2SC4474E part is unused and in its original packaging.

Return procedure for 2SC4474E:

1.Submit a request within 90 days.

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

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