TIP41C Equivalent & Substitute Parts

Part Overview

The TIP41C is an NPN bipolar junction transistor manufactured by onsemi, rated for 100 V collector-emitter breakdown voltage and 6 A maximum collector current. The device is packaged in TO-220-3 through-hole configuration and is designed for general-purpose switching and amplification applications. The original onsemi TIP41C is classified as obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production and field replacements.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	100	V
Current - Collector (Ic) (Max)	6	A
Power - Max	65	W
Frequency - Transition	3	MHz
Vce Saturation (Max) @ Ib, Ic	1.5V @ 600mA, 6A	—
DC Current Gain (hFE) (Min) @ Ic, Vce	15 @ 3A, 4V	—
Operating Temperature (Max)	150	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—

Substitute Part Grouping Explanation

Substitution of the TIP41C is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Transistor Type: NPN (required match)
Voltage - Collector Emitter Breakdown (Max): 100 V (required match)
Current - Collector (Ic) (Max): 6 A (required match for direct substitution)
Frequency - Transition: 3 MHz (required match)
Vce Saturation characteristics at specified bias conditions
DC Current Gain (hFE) minimum specifications

Mechanical Compatibility Criteria:

Mounting Type: Through Hole (required match)
Package / Case: TO-220-3 or compatible TO-220 variant (required match)

Substitution Categories:

Direct Substitutes maintain identical electrical ratings (100 V, 6 A, 3 MHz) and package configuration. These parts are pin-compatible and functionally equivalent without circuit modification.

Similar Substitutes share the same voltage and frequency ratings but differ in maximum collector current or power dissipation. These parts are suitable only when application current requirements are lower than the original specification.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) [A]	Vce Breakdown [V]	Power (Max) [W]	Frequency [MHz]	Package	Product Status	RoHS Compliance
TIP41C	onsemi	6	100	65	3	TO-220-3	Obsolete	Not specified
BD243CG	onsemi	6	100	65	3	TO-220-3	Active	ROHS3 Compliant
TIP41CG	onsemi	6	100	2	3	TO-220-3	Active	ROHS3 Compliant
BD241CG	onsemi	3	100	40	3	TO-220-3	Active	ROHS3 Compliant
TIP29CG	onsemi	1	100	2	3	TO-220-3	Active	ROHS3 Compliant
TIP31CG	onsemi	3	100	2	3	TO-220-3	Active	ROHS3 Compliant
TIP41C	NTE Electronics, Inc	6	100	2	3	TO-220-3	Active	ROHS3 Compliant
TIP41C-BP	Micro Commercial Co	6	100	2	3	TO-220-3	Active	ROHS3 Compliant
BD911	NTE Electronics, Inc	15	100	90	3	TO-220-3	Active	RoHS non-compliant

Engineering Selection Recommendations

Direct Substitutes (Pin-Compatible, Electrically Equivalent):

BD243CG (onsemi) is the primary direct substitute for the obsolete TIP41C. This part maintains identical electrical specifications: 100 V breakdown voltage, 6 A maximum collector current, 65 W power dissipation, and 3 MHz transition frequency. BD243CG is ROHS3 compliant and carries active product status, ensuring long-term availability and supply chain continuity.

TIP41CG (onsemi) is an active-status variant of the TIP41C base product number. It maintains the same electrical ratings and TO-220-3 package configuration. ROHS3 compliance and active product status support ongoing production requirements.

TIP41C (NTE Electronics, Inc) and TIP41C-BP (Micro Commercial Co) are cross-manufacturer equivalents with identical part designation and electrical specifications. Both maintain 6 A collector current and 100 V breakdown voltage ratings. NTE Electronics version is ROHS3 compliant; Micro Commercial Co version is ROHS3 compliant and available in TO-220AB variant packaging.

Similar Substitutes (Reduced Current Rating):

BD241CG (onsemi) is suitable for applications requiring maximum 3 A collector current. This part shares the 100 V breakdown voltage and 3 MHz transition frequency but provides 40 W power dissipation. ROHS3 compliance and active status are confirmed.

TIP31CG (onsemi) supports maximum 3 A collector current with 100 V breakdown voltage and 3 MHz transition frequency. ROHS3 compliant and active product status.

TIP29CG (onsemi) is limited to 1 A maximum collector current. Suitable only for low-current applications within the 100 V, 3 MHz specification envelope. ROHS3 compliant and active status.

Higher Current Alternative:

BD911 (NTE Electronics, Inc) provides 15 A maximum collector current with 100 V breakdown voltage and 90 W power dissipation. This part is suitable for applications requiring higher current capacity than the original TIP41C specification. Note: BD911 is RoHS non-compliant and carries MSL Level 1 moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can BD243CG directly replace the obsolete TIP41C without circuit modification?

A: Yes. BD243CG maintains identical electrical specifications: 100 V collector-emitter breakdown voltage, 6 A maximum collector current, 65 W power dissipation, and 3 MHz transition frequency. Pin configuration and TO-220-3 package are compatible. No circuit modification is required.

Q: What is the difference between TIP41C and TIP41CG?

A: Both parts share the same base product number (TIP41) and electrical specifications. TIP41CG is the active-status variant manufactured by onsemi with ROHS3 compliance. The original TIP41C is classified as obsolete. Functionally, both are equivalent for circuit applications.

Q: Can TIP41C-BP (Micro Commercial Co) be used in place of the onsemi TIP41C?

A: Yes. TIP41C-BP maintains identical electrical ratings and TO-220-3 package configuration. The part is ROHS3 compliant and actively produced. Packaging format differs (Tube vs. original Bag), but electrical and mechanical compatibility is confirmed.

Q: Is BD241CG a suitable substitute if my application only requires 3 A collector current?

A: Yes, for applications with maximum 3 A current requirement. BD241CG shares the 100 V breakdown voltage and 3 MHz transition frequency. Power dissipation is rated at 40 W versus the original 65 W. Electrical and mechanical compatibility is confirmed within the reduced current specification.

Q: Why is BD911 listed as a similar substitute rather than a direct substitute?

A: BD911 exceeds the original TIP41C specification with 15 A maximum collector current and 90 W power dissipation. While it maintains 100 V breakdown voltage and 3 MHz transition frequency, the higher current rating makes it a similar rather than direct substitute. Additionally, BD911 is RoHS non-compliant, which may conflict with design compliance requirements.

Q: Are all substitute parts ROHS3 compliant?

A: No. BD911 (NTE Electronics, Inc) is RoHS non-compliant. All other listed substitutes—BD243CG, TIP41CG, BD241CG, TIP29CG, TIP31CG, TIP41C (NTE), and TIP41C-BP—are ROHS3 compliant.

Q: What is the difference between TO-220-3 and TO-220AB packaging?

A: Both are through-hole packages with identical pin configuration and electrical compatibility. TO-220AB is a variant designation used by some manufacturers. TIP41C-BP (Micro Commercial Co) is supplied in TO-220AB format and is mechanically and electrically compatible with standard TO-220-3 applications.

Q: Can TIP29CG replace TIP41C in a high-current application?

A: No. TIP29CG is limited to 1 A maximum collector current, while TIP41C is rated for 6 A. Use of TIP29CG in a 6 A application would result in device failure. TIP29CG is suitable only for applications with maximum 1 A current requirement.

Q: What inventory status should I consider when selecting a substitute?

A: Inventory availability is provided for reference. BD243CG (1600 Pcs), TIP41CG (25100 Pcs), and TIP41C-BP (14950 Pcs) offer substantial active inventory. Selection should prioritize parts with active product status and ROHS3 compliance to ensure long-term supply chain viability.

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