TIP111-BP Equivalent & Substitute Parts

Part Overview

The TIP111-BP is an NPN Darlington bipolar junction transistor manufactured by Micro Commercial Co, designed for through-hole applications in the TO-220AB package. This component is rated for 80 V collector-emitter breakdown voltage and 2 A maximum collector current, with a maximum power dissipation of 50 W. The TIP111-BP is classified as obsolete, making identification of equivalent substitute parts necessary for ongoing design support and procurement continuity. Active alternatives with identical electrical specifications are available from current manufacturers.

Substiute Parts

TIP111-BP

Micro Commercial CoIn Stock: 871TIP111-BP Datasheet

Current PartRFQ

TIP111G

onsemiIn Stock: 1028TIP111G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TIP111-BP is determined by strict equivalence across the following electrical and mechanical parameters:

• Transistor Type: NPN - Darlington configuration
• Current Rating: 2 A maximum collector current
• Voltage Rating: 80 V maximum collector-emitter breakdown voltage
• Saturation Characteristics: 2.5 V Vce saturation at 8 mA base current and 2 A collector current
• Current Gain: Minimum 1000 hFE at 1 A collector current and 4 V Vce
• Package: TO-220-3 through-hole configuration
• Regulatory Compliance: ROHS3 Compliant and REACH Unaffected

The TIP111G from onsemi meets all specified electrical parameters and maintains identical package configuration, making it a direct functional equivalent. Differences in maximum power rating and operating temperature range do not affect substitution validity when the application operates within the substitute part's specifications.

Parameter Comparison

Engineering Selection Recommendations

The TIP111G from onsemi is the direct substitute for the obsolete TIP111-BP. Both components share identical electrical specifications across all critical parameters: collector current, breakdown voltage, saturation voltage, current gain, and package configuration. Both maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent component selection.

The TIP111G is currently in active production status with confirmed inventory availability, providing supply chain continuity for applications previously designed with the TIP111-BP. The substitute part is suitable for direct replacement in existing circuit designs without modification to PCB layout or component footprint, as both utilize the TO-220-3 through-hole package.

Frequently Asked Questions (FAQ)

Q: Can the TIP111G replace the TIP111-BP in existing designs?

A: Yes. The TIP111G meets all electrical specifications of the TIP111-BP, including collector current, breakdown voltage, saturation characteristics, and current gain. Both components use the TO-220-3 package, enabling direct substitution without PCB redesign.

Q: What is the primary reason for substitution?

A: The TIP111-BP is classified as obsolete. The TIP111G provides an active, currently manufactured equivalent with identical electrical performance.

Q: Are there package differences between these parts?

A: Both the TIP111-BP and TIP111G use the TO-220-3 through-hole package. The TIP111-BP is supplied in bulk packaging, while the TIP111G is supplied in tube packaging. Pin configuration and mechanical dimensions are identical.

Q: Do regulatory certifications differ between the parts?

A: No. Both the TIP111-BP and TIP111G are ROHS3 compliant and REACH unaffected, maintaining equivalent regulatory status.

Q: What is the difference in maximum power rating?

A: The TIP111-BP is rated for 50 W maximum power dissipation, while the TIP111G is rated for 2 W. Applications must operate within the TIP111G's 2 W power limit. If the original design requires power dissipation exceeding 2 W, the TIP111G is not suitable without thermal management modifications or alternative component selection.

Q: Are the operating temperature ranges equivalent?

A: The TIP111-BP specifies a maximum junction temperature of 150°C. The TIP111G specifies an operating temperature range of −65°C to 150°C. Both support the same maximum junction temperature; the TIP111G provides extended low-temperature operation capability.