TIP29A Equivalent & Substitute Parts

Part Overview

The TIP29A is a Bipolar (BJT) NPN transistor manufactured by onsemi, rated for 60V collector-emitter breakdown voltage and 1A maximum collector current in a TO-220-3 through-hole package. The device is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and procurement continuity. Alternative parts must satisfy the electrical and mechanical specifications required for direct replacement or functional substitution in circuit applications.

Substiute Parts

TIP29A

onsemiIn Stock: 2468TIP29A Datasheet

Current PartRFQ

TIP29AG

onsemiIn Stock: 3064TIP29AG Datasheet

DirectRFQ

2N6487G

onsemiIn Stock: 24412N6487G Datasheet

SimilarRFQ

TIP29A

Solid State Inc.In Stock: 2429TIP29A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TIP29A is determined by strict equivalence of the following electrical and mechanical parameters:

Direct Equivalence Criteria:

• Transistor Type: NPN
• Voltage - Collector Emitter Breakdown (Max): 60V minimum
• Current - Collector (Ic) (Max): 1A minimum
• Package / Case: TO-220-3
• Mounting Type: Through Hole

Functional Substitution Criteria: Parts that exceed the maximum current rating (Ic) or transition frequency while maintaining voltage and package compatibility are classified as functional substitutes. These parts operate within the same voltage envelope and physical form factor but provide enhanced performance characteristics.

The TIP29AG (onsemi) qualifies as a direct equivalent, sharing identical electrical specifications and active product status. The 2N6487G (onsemi) qualifies as a functional substitute, exceeding the collector current rating (15A vs. 1A) and transition frequency (5MHz vs. 3MHz) while maintaining the 60V voltage rating and TO-220-3 package.

Parameter Comparison

Engineering Selection Recommendations

TIP29AG (onsemi) - Direct Equivalent: The TIP29AG is the primary replacement for the obsolete TIP29A. This part maintains identical electrical specifications across all critical parameters: 60V breakdown voltage, 1A collector current, 2W power dissipation, and 3MHz transition frequency. The TIP29AG carries active product status and ROHS3 compliance, providing regulatory alignment for new designs and procurement continuity. The extended operating temperature range (-65°C to 150°C) provides improved thermal performance compared to the original specification. Packaging is supplied in tube format, suitable for automated assembly processes.

2N6487G (onsemi) - Functional Substitute: The 2N6487G functions as a substitute where circuit design permits higher collector current capacity (15A) and transition frequency (5MHz). This part maintains the 60V voltage rating and TO-220-3 package compatibility. The 2N6487G is active and ROHS3 compliant. Selection of this part is appropriate only when the application circuit can accommodate the increased current handling capability without circuit modification. The higher saturation voltage (3.5V at 15A) must be evaluated against circuit requirements.

TIP29A (Solid State Inc.) - Incomplete Specification: The TIP29A from Solid State Inc. lacks complete electrical parameter documentation, including Vce saturation, current cutoff, DC current gain, frequency, and operating temperature specifications. This incomplete data set prevents reliable substitution analysis and is not recommended for component selection.

Frequently Asked Questions (FAQ)

Q: Can the TIP29AG directly replace the obsolete TIP29A in existing designs?

A: Yes. The TIP29AG maintains identical electrical specifications for voltage rating (60V), collector current (1A), power dissipation (2W), and transition frequency (3MHz). The TO-220-3 package and through-hole mounting are identical. The TIP29AG is the direct equivalent for the obsolete TIP29A.

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

A: The TIP29AG is a direct equivalent with 1A maximum collector current. The 2N6487G is a higher-current device rated for 15A maximum collector current and 5MHz transition frequency. Both maintain the 60V voltage rating and TO-220-3 package. The 2N6487G functions as a substitute only when circuit design accommodates the increased current capacity.

Q: Are there compliance differences between the substitute parts?

A: The TIP29AG and 2N6487G are both ROHS3 compliant and REACH unaffected. Both are manufactured by onsemi. The obsolete TIP29A does not specify RoHS compliance. For new designs subject to regulatory requirements, the TIP29AG or 2N6487G are the appropriate selections.

Q: Does the extended operating temperature range of the TIP29AG affect circuit performance?

A: The TIP29AG specifies -65°C to 150°C operating temperature, compared to 150°C maximum for the original TIP29A. The extended lower temperature limit does not affect performance in applications operating within the original specification range. The upper temperature limit remains identical.

Q: Can the 2N6487G be used in applications designed for 1A operation?

A: Yes. The 2N6487G is rated for 15A maximum collector current, which exceeds the 1A requirement. The device operates safely at lower current levels. However, the higher saturation voltage (3.5V at 15A vs. 700mV at 1A) must be verified against circuit voltage drop requirements.

Q: What packaging formats are available for these substitute parts?

A: The TIP29AG is supplied in tube packaging. The 2N6487G is supplied in tube packaging. Both are through-hole mounted TO-220-3 devices suitable for manual and automated assembly processes.