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

STMicroelectronics TIP41CN

Name: TIP41CN
Brand: STMicroelectronics
SKU: TIP41CN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TIP41CN

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

Package:: TO-220-3

Datasheet:: TIP41CN.pdf

Description:: TRANS NPN 100V 6A TO-220

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TIP41CN from STMicroelectronics is an NPN silicon power transistor in TO-220 package, designed for linear amplification and switching in audio and power supply circuits. It delivers 6 A continuous collector current, 100 V collector-emitter sustaining voltage (V_CEO(sus)), and 65 W total power dissipation at T_C ≤ 25 °C, with h_FE grouped into R/O/Y variants for consistent gain matching in push-pull amplifier stages.

For engineers reviewing the TIP41CN datasheet, TIP41CN pinout, TIP41CN application, or TIP41CN equivalent, key selection criteria include verified DC current gain linearity across 0.3–3 A, low 1.5 V V_CE(sat) at 6 A/0.6 A drive, and thermal robustness up to 150 °C junction temperature in high-reliability linear output stages.

Technical Context

The TIP41CN employs base island silicon technology to improve h_FE linearity and switching speed over legacy TIP41C, enabling stable Class AB audio output operation without gain collapse at mid-current levels. Its complementary PNP counterpart is TIP42CN, supporting matched pair design in push-pull configurations.

Designed for operation with fixed-base bias or emitter-follower driver stages, it supports resistive load switching times under 1 µs (t_on/t_off) and maintains V_BE(on) ≤ 2 V at IC = 6 A, reducing driver stage power loss in discrete power amplifier designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO(sus)	100 V - Sustains full rated voltage at IC = 30 mA, enabling safe operation in 80 V rail linear amplifiers
I_C	6 A - Continuous collector current rating defines maximum undistorted output in Class AB audio stages
P_tot	65 W - Total dissipation at case temperature ≤ 25 °C sets heatsink sizing baseline for 30 W RMS audio output
V_CE(sat)	1.5 V @ IC = 6 A, IB = 0.6 A - Low saturation voltage minimizes conduction loss and thermal stress in switching regulators
h_FE	30–75 (Group R/O/Y) - Pre-selected DC gain bins ensure predictable bias point stability across production lots
T_J(max)	150 °C - Maximum junction temperature allows reliable operation with standard TO-220 heatsinking in enclosed enclosures
ICEO	0.7 mA @ V_CE = 60 V - Low leakage supports stable quiescent current setting in temperature-compensated bias networks

Pinout & Package

TO-220 package with vertical mounting orientation, metal tab electrically connected to collector (Pin 2), requiring insulated mounting hardware when used with grounded heatsinks.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal	Connected to ground or negative rail in common-emitter amplifier; requires low-inductance path for high-frequency stability
2 (Collector)	Main current output terminal	Internally bonded to metal tab; must be electrically isolated from heatsink unless system ground reference permits direct mounting
3 (Base)	Control input terminal	Receives forward-biased drive current; requires series resistor to limit IB to ≤3 A peak per absolute max rating

Key Features

Feature	Design Value
Enhanced h_FE linearity	Gain variation < ±15% across 0.3–3 A range enables consistent biasing in multi-stage linear amplifiers
High-speed switching	t_on/t_off < 1 µs (resistive load) supports PWM-based DC-DC converters up to 100 kHz
Grouped h_FE bins	R/O/Y selection ensures matched gain pairs with TIP42CN for symmetrical push-pull output stages
Improved thermal performance	65 W dissipation at T_C = 25 °C allows ≥25 W continuous audio output with standard 2°C/W heatsink

Applications

Audio Power Amplifier

Linear Voltage Regulator

Use Scenario: Discrete Class AB output stage in 20–50 W stereo amplifiers driving 4–8 Ω speakers.

IC Role / Device Role / Timing Role: NPN power switch delivering amplified audio signal to load with minimal crossover distortion.

Use Value: Grouped h_FE and low V_CE(sat) maintain thermal stability and reduce second-harmonic distortion below 0.5% THD+N.

Use Scenario: Pass transistor in adjustable 3–30 V, 3 A linear regulator for lab bench supplies.

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

Use Value: 100 V V_CEO(sus) supports >25 V input-to-output differential, enabling wide-range regulation without derating.

DC Motor Driver

Switching Power Supply

Use Scenario: H-bridge half-bridge leg driving 12–24 V brushed DC motors in industrial actuators.

IC Role / Device Role / Timing Role: High-current NPN switch turning motor winding on/off under PWM control.

Use Value: 10 A I_CM peak rating handles motor stall currents; fast t_on/t_off reduces switching losses at 20 kHz PWM.

Use Scenario: Main switch in 50–100 W flyback or forward converter for AC-DC adapters.

IC Role / Device Role / Timing Role: Primary-side power switch conducting during ON-time, blocking during OFF-time.

Use Value: 100 V VCBO withstands reflected flyback spikes; 65 W P_tot supports continuous operation with active cooling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN power transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD127G	TO-263 surface-mount package; 8 A I_C, 100 V V_CEO, but lower h_FE linearity (20–70)	Suitable for automated PCB assembly; less ideal for precision audio biasing due to wider h_FE spread	Select when board space or reflow compatibility outweighs gain-matching requirements
TIP31C	Same TO-220 package; 3 A I_C, 100 V V_CEO, 40 W P_tot, ungrouped h_FE (10–50)	Limited to ≤15 W audio or low-power switching; no h_FE binning for matched pairs	Choose only for cost-sensitive, non-critical linear applications where gain consistency is not required

Compared with MJD127G and TIP31C, the TIP41CN provides superior h_FE linearity and higher continuous current handling in through-hole form, making it the preferred choice for thermally demanding, gain-stable linear amplifier and regulator designs.

Availability

TIP41CN is available at Aetrix Electronics and suitable for audio power amplifiers, linear voltage regulators, and DC motor drivers requiring stable component supply and long-term manufacturability.

Supply support for TIP41CN 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, specializing in power, analog, MCU, and sensor technologies for industrial, automotive, and consumer markets.

The TIP41CN belongs to ST's legacy silicon power transistor family, engineered specifically for high-fidelity audio output stages and rugged linear power control where reliability, thermal margin, and gain predictability are critical.

FAQ

Is the TIP41CN pin-compatible with the TIP41C?

Yes, the TIP41CN is a direct replacement for the TIP41C in TO-220 footprint and pinout, with identical 1–Emitter, 2–Collector, 3–Base arrangement. However, it features enhanced h_FE linearity and improved switching speed, allowing drop-in upgrades in existing designs without layout changes.

What is the significance of h_FE grouping (R/O/Y)?

h_FE grouping ensures consistent DC current gain across production lots: Group R (30–42), Group O (15–28), and Group Y (24–44). This enables precise bias network design and matched pair selection with TIP42CN for push-pull amplifiers, reducing thermal drift and distortion.

Can the TIP41CN be used in switching power supplies?

Yes - its 10 A peak collector current, sub-1 µs switching times, and 100 V V_CBO rating make it suitable for flyback and forward converter primary switches up to 100 W. Thermal design must account for 65 W P_tot at T_C = 25 °C, requiring adequate heatsinking for continuous operation.

Does the metal tab connect to a specific pin internally?

Yes, the metal tab is internally connected to Pin 2 (Collector) in the TO-220 package. When mounting to a heatsink, electrical isolation (e.g., mica washer + insulating sleeve) is mandatory unless the collector node is referenced to chassis ground in the system design.

TIP41CN Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 6 A

Voltage - Collector Emitter Breakdown (Max):: 100 V

Vce Saturation (Max) @ Ib, Ic:: 1.5V @ 600mA, 6A

Current - Collector Cutoff (Max):: 700µA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 15 @ 3A, 4V

Power - Max:: 65 W

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

TIP41CN FAQ

1.How can I place an order for TIP41CN through Aetrix?

Please submit a Request for Quotation (RFQ) for TIP41CN 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 TIP41CN reliable?

The price and inventory of TIP41CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TIP41CN is usually 5 days.

3.What payment methods are accepted for TIP41CN?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TIP41CN transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TIP41CN?

TIP41CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TIP41CN 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 TIP41CN?

For technical support, including TIP41CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TIP41CN requirements.

6.How does Aetrix verify that TIP41CN is sourced from the original manufacturer or authorized distributors?

All TIP41CN 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 TIP41CN meets industry standards.

7.What is the process for return or replacement of TIP41CN?

All TIP41CN units undergo pre-shipment inspection (PSI). If there is an issue with TIP41CN, 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 TIP41CN part is unused and in its original packaging.

Return procedure for TIP41CN:

1.Submit a request within 90 days.

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

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