TIP29ATU Equivalent & Substitute Parts

Part Overview

The TIP29ATU is an NPN bipolar junction transistor manufactured by onsemi, housed in a TO-220-3 through-hole package. This device is rated for 60 V collector-emitter breakdown voltage and 1 A maximum collector current, with a maximum power dissipation of 2 W. The TIP29ATU is classified as obsolete, necessitating identification of active equivalent and substitute parts for new designs and ongoing production requirements. Equivalent parts maintain identical electrical specifications, while substitute parts may offer enhanced performance characteristics within compatible parameter ranges.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	60	V
Current - Collector (Ic) (Max)	1	A
Power - Max	2	W
Vce Saturation (Max) @ Ib, Ic	700mV @ 125mA, 1A	—
DC Current Gain (hFE) (Min) @ Ic, Vce	15 @ 1A, 4V	—
Frequency - Transition	3	MHz
Current - Collector Cutoff (Max)	300	µA
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—
Operating Temperature (Max)	150	°C

Substitute Part Grouping Explanation

Substitution of the TIP29ATU is determined by alignment of the following critical parameters: transistor type (NPN), collector-emitter breakdown voltage (60 V maximum), package type (TO-220-3 through-hole), and mounting configuration. Parts are grouped into two categories based on electrical performance alignment:

Parametric Equivalent Category: Parts maintaining identical electrical specifications across collector current, power dissipation, saturation voltage, current gain, and transition frequency. These parts are direct functional replacements.

Performance Substitute Category: Parts with enhanced current-handling capability or improved specifications while maintaining voltage and package compatibility. These parts operate within the same voltage and thermal envelope but offer higher performance margins.

The following parameters establish substitution validity:

Collector-Emitter Breakdown Voltage: 60 V (fixed requirement)
Package Type: TO-220-3 (fixed requirement)
Transistor Type: NPN (fixed requirement)
Mounting: Through Hole (fixed requirement)

Parameter Comparison

Parameter	TIP29ATU	TIP29AG	TIP29A	2N6487G
Manufacturer	onsemi	onsemi	Solid State Inc.	onsemi
Transistor Type	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	60 V	60 V	—	60 V
Current - Collector (Ic) (Max)	1 A	1 A	—	15 A
Power - Max	2 W	2 W	—	1.8 W
Vce Saturation (Max) @ Ib, Ic	700mV @ 125mA, 1A	700mV @ 125mA, 1A	—	3.5V @ 5A, 15A
DC Current Gain (hFE) (Min) @ Ic, Vce	15 @ 1A, 4V	15 @ 1A, 4V	—	20 @ 5A, 4V
Frequency - Transition	3 MHz	3 MHz	—	5 MHz
Current - Collector Cutoff (Max)	300 µA	300 µA	—	1 mA
Operating Temperature (Max)	150°C	-65°C ~ 150°C	—	-65°C ~ 150°C
Package / Case	TO-220-3	TO-220-3	TO-220-3	TO-220-3
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

TIP29AG (Parametric Equivalent): This part is the primary equivalent for the TIP29ATU. It maintains identical electrical specifications across all measured parameters: 1 A maximum collector current, 60 V breakdown voltage, 2 W power dissipation, 700 mV saturation voltage, 15 minimum current gain, and 3 MHz transition frequency. The TIP29AG is manufactured by onsemi with active product status and ROHS3 compliance. The extended operating temperature range (-65°C to 150°C) provides improved thermal margin compared to the TIP29ATU specification. This part is the direct replacement for new designs and production continuity.

TIP29A (Direct Equivalent): This part is manufactured by Solid State Inc. and maintains the TO-220-3 package and through-hole mounting configuration. Complete electrical parameter data is not provided in the specification; therefore, detailed compatibility assessment is limited to package and mounting type confirmation. This part carries ROHS3 compliance and active product status. Selection of this part requires verification of electrical specifications against application requirements.

2N6487G (Performance Substitute): This part operates within the same 60 V voltage envelope and TO-220-3 package but offers enhanced current-handling capability at 15 A maximum collector current. The transition frequency is increased to 5 MHz, and the DC current gain is improved to 20 minimum at 5 A. The saturation voltage specification (3.5 V @ 5A, 15A) reflects operation at higher current levels. This part is manufactured by onsemi with active product status and ROHS3 compliance. The 2N6487G is suitable for applications requiring higher current capacity within the same voltage and thermal constraints.

Frequently Asked Questions (FAQ)

Q: Can the TIP29AG directly replace the TIP29ATU in existing designs?

A: Yes. The TIP29AG maintains identical electrical specifications for collector current (1 A), breakdown voltage (60 V), power dissipation (2 W), saturation voltage (700 mV @ 125 mA, 1 A), current gain (15 @ 1 A, 4 V), transition frequency (3 MHz), and collector cutoff current (300 µA). Both parts use the TO-220-3 through-hole package. The TIP29AG is active and ROHS3 compliant, making it the direct replacement for the obsolete TIP29ATU.

Q: What is the difference between the TIP29AG and the 2N6487G?

A: The TIP29AG and 2N6487G differ in maximum collector current and associated performance characteristics. The TIP29AG is rated for 1 A maximum collector current with 2 W power dissipation, while the 2N6487G is rated for 15 A maximum collector current with 1.8 W power dissipation. Both operate at 60 V breakdown voltage and use the TO-220-3 package. The 2N6487G offers higher transition frequency (5 MHz versus 3 MHz) and improved current gain (20 versus 15). Selection between these parts depends on application current requirements.

Q: Are all substitute parts ROHS3 compliant?

A: The TIP29AG and 2N6487G are both ROHS3 compliant. The TIP29A is also ROHS3 compliant. The original TIP29ATU does not specify RoHS status in the provided data.

Q: Can the 2N6487G be used in applications designed for the TIP29ATU?

A: The 2N6487G operates within the same 60 V voltage envelope and uses the same TO-220-3 package, making it physically and electrically compatible at the voltage level. However, the 2N6487G is rated for 15 A maximum collector current compared to the TIP29ATU's 1 A rating. Applications designed for 1 A operation will function with the 2N6487G, but the higher current rating does not provide functional advantage in current-limited designs. Selection should be based on actual application current requirements.

Q: What packaging options are available for these parts?

A: All substitute parts (TIP29AG, TIP29A, and 2N6487G) are supplied in the TO-220-3 through-hole package, matching the TIP29ATU package configuration. The TIP29AG and 2N6487G are supplied in tube packaging, while the TIP29ATU and TIP29A do not specify packaging format in the provided data.

Q: What is the operating temperature range for each part?

A: The TIP29ATU specifies a maximum operating temperature of 150°C. The TIP29AG and 2N6487G both specify an operating temperature range of -65°C to 150°C, providing extended low-temperature capability. The TIP29A does not specify operating temperature in the provided data.

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