TIP41BTU Equivalent & Substitute Parts

Part Overview

The TIP41BTU is a Bipolar (BJT) NPN transistor manufactured by onsemi, designed for general-purpose switching and amplification applications. It features a maximum collector current of 6 A, collector-emitter breakdown voltage of 80 V, and maximum power dissipation of 2 W in a Through Hole TO-220-3 package. The TIP41BTU is classified as Obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. Substitute parts must maintain electrical performance and mechanical compatibility while offering current availability and active product status.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) (Max)	6	A
Voltage - Collector Emitter Breakdown (Max)	80	V
Vce Saturation (Max) @ Ib, Ic	1.5V @ 600mA, 6A	—
Current - Collector Cutoff (Max)	700	µA
DC Current Gain (hFE) (Min) @ Ic, Vce	15 @ 3A, 4V	—
Power - Max	2	W
Frequency - Transition	3	MHz
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—

Substitute Part Grouping Explanation

Substitution of the TIP41BTU is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Parameters:

Transistor Type: NPN
Maximum Collector Current (Ic): 6 A
Maximum Collector-Emitter Breakdown Voltage: 80 V
Vce Saturation characteristics: 1.5V @ 600mA, 6A
Maximum Collector Cutoff Current: 700µA
DC Current Gain (hFE): 15 @ 3A, 4V (minimum)
Maximum Power Dissipation: 2 W
Transition Frequency: 3 MHz
Mounting Type: Through Hole
Package: TO-220-3

The TIP41BG qualifies as a parametric equivalent because it maintains identical electrical specifications across all critical parameters while offering active product status and improved compliance certifications.

Parameter Comparison

Parameter	TIP41BTU (Main Part)	TIP41BG (Substitute)	Match Status
Transistor Type	NPN	NPN	Identical
Current - Collector (Ic) (Max)	6 A	6 A	Identical
Voltage - Collector Emitter Breakdown (Max)	80 V	80 V	Identical
Vce Saturation (Max) @ Ib, Ic	1.5V @ 600mA, 6A	1.5V @ 600mA, 6A	Identical
Current - Collector Cutoff (Max)	700µA	700µA	Identical
DC Current Gain (hFE) (Min) @ Ic, Vce	15 @ 3A, 4V	15 @ 3A, 4V	Identical
Power - Max	2 W	2 W	Identical
Frequency - Transition	3 MHz	3 MHz	Identical
Mounting Type	Through Hole	Through Hole	Identical
Package / Case	TO-220-3	TO-220-3	Identical
Operating Temperature	150°C (TJ)	-65°C ~ 150°C (TJ)	Substitute Exceeds
Product Status	Obsolete	Active	Substitute Active
RoHS Status	Not Specified	ROHS3 Compliant	Substitute Compliant

Engineering Selection Recommendations

The TIP41BG is the direct parametric equivalent for the TIP41BTU across all electrical and mechanical specifications. Selection of the TIP41BG is supported by the following factors:

Product Status: The TIP41BG maintains Active product status, ensuring continued availability and manufacturer support, whereas the TIP41BTU is classified as Obsolete.

Compliance Certifications: The TIP41BG is ROHS3 Compliant, meeting current regulatory requirements for electronic component manufacturing and distribution. Both parts maintain REACH Unaffected status and EAR99 export classification.

Electrical Equivalence: All critical electrical parameters—collector current, breakdown voltage, saturation characteristics, current gain, power dissipation, and transition frequency—are identical between the two parts.

Thermal Performance: The TIP41BG provides an extended operating temperature range (-65°C to 150°C) compared to the TIP41BTU specification (150°C maximum), offering improved thermal margin for applications operating at lower ambient temperatures.

Mechanical Compatibility: Both parts utilize identical Through Hole TO-220-3 packaging, ensuring direct board-level compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the TIP41BG be used as a direct replacement for the TIP41BTU in existing designs?

A: Yes. The TIP41BG is electrically and mechanically identical to the TIP41BTU across all specified parameters. Direct substitution is supported without circuit modification or performance degradation.

Q: What is the primary reason for substituting the TIP41BTU?

A: The TIP41BTU is classified as Obsolete. The TIP41BG provides equivalent electrical performance with Active product status, ensuring long-term availability and manufacturer support.

Q: Are there packaging differences between the TIP41BTU and TIP41BG?

A: Both parts use the TO-220-3 Through Hole package. The primary packaging difference is the supplier device package designation (TIP41BTU: TO-220-3; TIP41BG: TO-220), which reflects supplier documentation conventions but does not affect physical compatibility or pin configuration.

Q: Does the TIP41BG meet current regulatory requirements?

A: Yes. The TIP41BG is ROHS3 Compliant and maintains REACH Unaffected status, meeting current environmental and regulatory standards for electronic component manufacturing and distribution.

Q: What is the inventory status of these parts?

A: The TIP41BTU has 17,749 pieces in stock as new original inventory. The TIP41BG has 20,300 pieces in stock as new original inventory. The TIP41BG offers higher current availability.

Q: Are the thermal characteristics identical between the two parts?

A: Both parts support maximum junction temperatures of 150°C. The TIP41BG specifies an extended operating temperature range of -65°C to 150°C, providing improved performance margin at lower ambient temperatures compared to the TIP41BTU specification.

Q: Can the TIP41BG be used in high-frequency applications?

A: Both parts have identical transition frequency specifications of 3 MHz. Application suitability is determined by circuit requirements and operating frequency, not by differences between these equivalent parts.

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