TIP105 Equivalent & Substitute Parts

Part Overview

The TIP105 is a PNP Darlington bipolar junction transistor manufactured by onsemi, rated for 60 V collector-emitter breakdown voltage and 8 A maximum collector current in a TO-220-3 through-hole package. The device is classified as obsolete by the original manufacturer, necessitating identification of active equivalent parts for continued circuit implementation. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, current capacity, gain characteristics, and thermal performance while accommodating modern supply chain availability.

Substiute Parts

TIP105

onsemiIn Stock: 44242TIP105 Datasheet

Current PartRFQ

TIP107G

onsemiIn Stock: 9148TIP107G Datasheet

SimilarRFQ

TIP105

NTE Electronics, IncIn Stock: 44255TIP105 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TIP105 are identified based on strict electrical and mechanical compatibility criteria. The primary substitution logic is as follows:

Allowed Substitution Parameters:

• Transistor Type: PNP - Darlington (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: TO-220-3 or TO-220 (mechanically compatible)
• Current - Collector (Ic) (Max): Equal to or greater than 8 A
• Voltage - Collector Emitter Breakdown (Max): Equal to or greater than 60 V
• Vce Saturation (Max) @ Ib, Ic: Equal to or less than 2.5 V @ 80 mA, 8 A
• Current - Collector Cutoff (Max): Equal to or less than 50 µA
• DC Current Gain (hFE) (Min) @ Ic, Vce: Equal to or greater than 1000 @ 3 A, 4 V
• Power - Max: Equal to or greater than 2 W
• Operating Temperature (TJ): Equal to or greater than 150 °C

Parts meeting all criteria are classified as direct electrical equivalents. Parts exceeding voltage or power ratings while maintaining all other parameters are classified as upgrades suitable for higher-stress applications.

Parameter Comparison

Engineering Selection Recommendations

TIP107G (onsemi): This part is an active product from the original manufacturer and meets all electrical substitution criteria. The TIP107G provides a 100 V collector-emitter breakdown voltage rating, exceeding the TIP105 specification of 60 V, making it suitable for applications requiring higher voltage margin. The extended operating temperature range (−65 °C to 150 °C) provides broader thermal compatibility. The TIP107G is RoHS3 compliant, addressing modern regulatory requirements. This part is recommended as the primary substitute for new designs and obsolescence mitigation.

TIP105 (NTE Electronics, Inc): This part is a direct electrical equivalent manufactured by NTE Electronics under the same part number. It maintains identical voltage and current ratings to the original onsemi TIP105. The NTE variant provides significantly higher power dissipation capability (80 W versus 2 W), enabling use in higher-power applications. The extended operating temperature range (−65 °C to 150 °C) and 4 MHz transition frequency specification provide additional performance data. However, this part is RoHS non-compliant, which may restrict use in applications subject to RoHS regulations. This part is suitable for applications where RoHS compliance is not required and higher power handling is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the TIP107G replace the TIP105 in existing circuits?

A: Yes. The TIP107G meets all electrical substitution criteria for the TIP105. The higher voltage rating (100 V versus 60 V) provides additional design margin without affecting circuit operation at the original 60 V specification. Pin configuration and package dimensions are identical (TO-220-3).

Q: What is the difference between the onsemi TIP105 and the NTE Electronics TIP105?

A: Both parts share identical part numbers and maintain the same electrical specifications for voltage, current, and gain. The primary differences are manufacturer identity, power dissipation rating (2 W for onsemi, 80 W for NTE), and regulatory compliance status (NTE is RoHS non-compliant). Selection depends on application power requirements and regulatory constraints.

Q: Is the TIP107G suitable for applications originally designed for the TIP105?

A: Yes. The TIP107G is electrically compatible with the TIP105 across all critical parameters. The higher voltage rating provides additional safety margin. No circuit modifications are required for direct substitution.

Q: What packaging formats are available for these substitutes?

A: The TIP105 (onsemi) is supplied in standard packaging. The TIP107G is supplied in tube packaging. The TIP105 (NTE Electronics) is supplied in bag packaging. All three parts use the TO-220-3 through-hole package format, ensuring mechanical compatibility in PCB applications.

Q: Are there compliance differences between the substitute parts?

A: Yes. The TIP107G (onsemi) is RoHS3 compliant. The TIP105 (NTE Electronics) is RoHS non-compliant. Both parts are REACH unaffected and classified as EAR99 for export control purposes. Application regulatory requirements determine which part is appropriate.

Q: Can the NTE Electronics TIP105 be used in high-power applications?

A: Yes. The NTE Electronics TIP105 is rated for 80 W maximum power dissipation, compared to 2 W for the onsemi version. This higher rating enables use in applications requiring greater heat dissipation. Proper thermal management through heatsinking remains necessary for reliable operation.