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

STMicroelectronics 2STC4467

Name: 2STC4467
Brand: STMicroelectronics
SKU: 2STC4467
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2STC4467

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

Package:: TO-3P-3, SC-65-3

Datasheet:: 2STC4467.pdf

Description:: TRANS NPN 120V 8A TO-3P

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2STC4467 from STMicroelectronics is a high-power NPN epitaxial planar bipolar transistor designed for linear audio amplifier stages, featuring V_CEO = 120 V, I_C = 8 A, P_TOT = 80 W at T_c = 25 °C, f_T = 20 MHz, and complementary pairing with 2STA1694. It employs BiT-LA technology to ensure gain linearity in Class AB output stages.

For engineers reviewing the 2STC4467 datasheet, 2STC4467 pinout, 2STC4467 application, or 2STC4467 equivalent, key selection criteria include safe operating area (SOA) at elevated case temperatures, DC current gain linearity across I_C = 1–5 A, V_CE(sat) ≤ 1.5 V at I_C = 3 A / I_B = 300 mA, and thermal resistance R_thj-case = 1.563 °C/W for heatsink-limited designs.

Technical Context

This NPN transistor operates as a linear output device in analog power amplification, with specified characterization up to T_case = 125 °C and pulsed SOA validated per Figure 2. Its BiT-LA process ensures stable h_FE (70–140 at I_C = 3 A) and low distortion under dynamic load conditions.

The device uses TO-3P metal package with three terminals-collector (pin 1), base (pin 2), emitter (pin 3)-and supports fast-switching operation via f_T = 20 MHz, while maintaining robust breakdown margins: V_CBO = V_CEO = 120 V, V_EBO = 6 V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	120 V - Sustains full rail voltage in ±60 V audio supply topologies without breakdown
I_C	8 A continuous - Supports ≥50 W RMS output into 8 Ω loads with adequate heatsinking
P_TOT	80 W at T_c = 25 °C - Defines maximum steady-state power dissipation before thermal derating
f_T	20 MHz - Enables stable wideband feedback loop compensation up to ~1 MHz closed-loop bandwidth
R_thj-case	1.563 °C/W - Determines junction-to-heatsink temperature rise; requires <1.2 °C/W heatsink for 150 °C max T_J
h_FE	70–140 at I_C = 3 A - Provides predictable bias stability in emitter-follower or common-emitter driver stages
V_CE(sat)	≤1.5 V at I_C = 3 A / I_B = 300 mA - Limits conduction loss and thermal stress in quiescent and peak output conditions

Pinout & Package

Package: TO-3P (isolated metal case, 3-terminal, through-hole). Dimensions per ST mechanical drawing: D ≈ 20.0 mm, E ≈ 15.6 mm, L ≈ 20.0 mm, e ≈ 5.45 mm.

Pin/Terminal	Circuit Role	Design Meaning
1 (Collector)	Main current sink node	Electrically connected to metal case; must be insulated from heatsink unless referenced to ground
2 (Base)	Control input terminal	Receives drive current to modulate collector current; requires stable bias network for Class AB linearity
3 (Emitter)	Current source reference node	Typically tied to output node or emitter degeneration resistor; defines local ground reference for output stage

Key Features

Feature	Design Value
BiT-LA process technology	Optimized for gain linearity and low THD in analog audio output stages, not general-purpose switching
Complementary pairing	Matched performance with 2STA1694 (PNP) enables push-pull amplifier symmetry and reduced crossover distortion
High-temperature characterization	Fully specified at T_case = 125 °C - Ensures design margin for enclosed or high-ambient enclosures
Fast-switching capability	f_T = 20 MHz supports wideband compensation and transient response in feedback amplifiers

Applications

Hi-Fi Audio Amplifier Output Stage

Professional PA System Driver

Use Scenario: Final output stage in discrete Class AB amplifier delivering 30–60 W into 4–8 Ω loads with <0.1% THD+N.

IC Role / Device Role / Timing Role: Linear NPN output transistor conducting continuous analog current; biased at ~100 mA quiescent current.

Use Value: High V_CEO and SOA enable safe operation at ±55 V rails; BiT-LA linearity preserves harmonic integrity.

Use Scenario: Driver stage in multi-channel 100 W/channel powered mixer with active thermal management.

IC Role / Device Role / Timing Role: Medium-power output device handling peak currents up to 12 A in short-duration program material.

Use Value: I_CM = 16 A and SOA curve support dynamic peaks without secondary breakdown; R_thj-case allows integration with forced-air heatsinks.

Studio Monitor Power Module

Active Subwoofer Output Stage

Use Scenario: Dual-mono power section in near-field studio monitors requiring ultra-low noise and precise gain tracking.

IC Role / Device Role / Timing Role: Matched NPN device in differential pair configuration with 2STA1694; operated in linear region with tight V_BE tracking.

Use Value: Tight h_FE spread (70–140) and low ICBO (≤10 µA) minimize DC offset drift over temperature.

Use Scenario: Low-frequency output stage in sealed or ported subwoofer enclosures delivering 100+ W at 20–120 Hz.

IC Role / Device Role / Timing Role: High-current, low-f_T-sensitive device where voltage swing dominates over slew rate requirements.

Use Value: V_CEO = 120 V accommodates high-voltage rails needed for deep-bass headroom; rugged SOA prevents failure during bass transients.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN linear amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJE15030G	V_CEO = 150 V, I_C = 8 A, f_T = 4 MHz, R_thj-case = 1.67 °C/W	Lower f_T limits bandwidth; higher V_CEO allows wider supply rails	Preferable for ultra-high-voltage (>±70 V) but lower-bandwidth designs
BDW83C	V_CEO = 100 V, I_C = 12 A, f_T = 3 MHz, R_thj-case = 1.25 °C/W	Lower breakdown rating; higher current but poorer linearity and SOA at high V_CE	Suitable for cost-sensitive, non-critical audio where V_CC ≤ ±45 V and THD <0.5% acceptable

Compared with MJE15030G and BDW83C, the 2STC4467 offers superior f_T-based bandwidth and BiT-LA–enhanced linearity for fidelity-critical audio, while balancing SOA robustness and thermal resistance for thermally constrained enclosures.

Availability

2STC4467 is available at Aetrix Electronics and suitable for Hi-Fi audio amplifiers, professional PA systems, studio monitor power modules, and active subwoofer output stages requiring stable component supply and long-term design continuity.

Supply support for 2STC4467 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The 2STC4467 belongs to ST's high-voltage linear bipolar transistor family, developed specifically for high-fidelity audio power amplification with emphasis on gain linearity, thermal reliability, and SOA integrity.

FAQ

Is the 2STC4467 RoHS-compliant and lead-free?

Yes. Per ST's ECOPACK® documentation, the 2STC4467 is offered in RoHS-compliant, lead-free versions meeting EU Directive 2011/65/EU. The TO-3P package uses matte tin plating on leads and complies with JEDEC J-STD-020 moisture sensitivity level 1.

What is the recommended heatsink interface for the 2STC4467 TO-3P package?

A mica washer (0.003–0.005 in thick) with silicone grease is recommended to electrically isolate the collector-connected case while maintaining thermal resistance below 0.5 °C/W. Mounting torque must not exceed 0.5 N·m to avoid package deformation.

Can the 2STC4467 be used in switching power supplies?

No. Though it exhibits f_T = 20 MHz, its SOA and BiT-LA process are optimized for linear operation-not hard switching. Use dedicated switching transistors (e.g., ST's STD series) for SMPS due to secondary breakdown risk and lack of optimized storage time specs.

How does the 2STC4467's gain linearity compare to standard planar transistors?

BiT-LA processing reduces h_FE variation across I_C = 0.5–5 A by >40% versus conventional planar NPNs. Measured THD at 1 kHz/10 W is typically 0.03%, versus >0.1% for non-BiT-LA equivalents under identical bias and load conditions.

2STC4467 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-3P-3, SC-65-3

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 8 A

Voltage - Collector Emitter Breakdown (Max):: 120 V

Vce Saturation (Max) @ Ib, Ic:: 1.5V @ 300mA, 3A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 70 @ 3A, 4V

Power - Max:: 80 W

Frequency - Transition:: 20MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-3P

2STC4467 FAQ

1.How can I place an order for 2STC4467 through Aetrix?

Please submit a Request for Quotation (RFQ) for 2STC4467 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 2STC4467 reliable?

The price and inventory of 2STC4467 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2STC4467 is usually 5 days.

3.What payment methods are accepted for 2STC4467?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2STC4467 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2STC4467?

2STC4467 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2STC4467 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 2STC4467?

For technical support, including 2STC4467 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2STC4467 requirements.

6.How does Aetrix verify that 2STC4467 is sourced from the original manufacturer or authorized distributors?

All 2STC4467 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 2STC4467 meets industry standards.

7.What is the process for return or replacement of 2STC4467?

All 2STC4467 units undergo pre-shipment inspection (PSI). If there is an issue with 2STC4467, 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 2STC4467 part is unused and in its original packaging.

Return procedure for 2STC4467:

1.Submit a request within 90 days.

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

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