FZT655TC Equivalent & Substitute Parts

Part Overview

The FZT655TC is an NPN bipolar junction transistor manufactured by Diodes Incorporated, designed for general-purpose switching and amplification applications. This device features a 150 V collector-emitter breakdown voltage, 1 A maximum collector current, and 2 W power dissipation capability in a surface mount SOT-223-3 package. The FZT655TC is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements.

Substiute Parts

FZT655TC

Diodes IncorporatedIn Stock: 1068FZT655TC Datasheet

Current PartRFQ

FZT655TA

Diodes IncorporatedIn Stock: 33158FZT655TA Datasheet

Parametric EquivalentRFQ

PBHV8115Z,115

Nexperia USA Inc.In Stock: 5577PBHV8115Z,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FZT655TC is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Transistor type: NPN configuration
• Maximum collector current: 1 A
• Collector-emitter breakdown voltage: 150 V
• Transition frequency: 30 MHz
• Surface mount package: SOT-223-3 or equivalent TO-261-4/TO-261AA footprint
• DC current gain minimum: 50 @ specified conditions
• Operating temperature range: -55°C to 150°C

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications and packaging) and manufacturer-recommended alternatives (meeting or exceeding electrical requirements with potential variations in secondary parameters such as saturation voltage or power rating).

Parameter Comparison

Engineering Selection Recommendations

FZT655TA (Parametric Equivalent): The FZT655TA is a direct parametric equivalent to the FZT655TC, manufactured by Diodes Incorporated. This part maintains identical electrical specifications across all critical parameters including collector current, breakdown voltage, saturation voltage, current gain, power rating, and transition frequency. The FZT655TA is classified as active product status, ensuring long-term availability and supply chain continuity. The primary distinction is packaging format: FZT655TA is supplied in Tape & Reel (TR) configuration versus the FZT655TC standard packaging. Both parts are ROHS3 compliant with MSL 1 rating. The FZT655TA is suitable for direct replacement in applications where the FZT655TC is currently specified.

PBHV8115Z,115 (Manufacturer-Recommended Alternative): The PBHV8115Z,115 is a manufacturer-recommended substitute produced by Nexperia USA Inc. This part meets the core electrical requirements of the FZT655TC with identical collector current (1 A), breakdown voltage (150 V), transition frequency (30 MHz), and current gain specifications. The PBHV8115Z,115 demonstrates improved saturation voltage performance (350mV versus 500mV at rated conditions), resulting in lower power dissipation during switching operations. The maximum power rating is 1.4 W compared to 2 W for the FZT655TC; this reduction is acceptable for applications not requiring the full 2 W dissipation envelope. The PBHV8115Z,115 carries automotive-grade qualification (AEC-Q100) and is REACH unaffected, providing additional compliance advantages for regulated applications. This part is supplied in Tape & Reel format and is classified as active product status.

Frequently Asked Questions (FAQ)

Q: Can FZT655TA be used as a direct replacement for FZT655TC?

A: Yes. The FZT655TA is a parametric equivalent with identical electrical specifications across all critical parameters. Both parts are NPN transistors with 1 A collector current, 150 V breakdown voltage, 30 MHz transition frequency, and 2 W power rating. The primary difference is packaging format (Tape & Reel for FZT655TA). Footprint compatibility is maintained as both use SOT-223-3 package.

Q: What are the key differences between FZT655TA and PBHV8115Z,115?

A: Both parts are active substitutes for the obsolete FZT655TC and share identical collector current (1 A), breakdown voltage (150 V), and transition frequency (30 MHz). The PBHV8115Z,115 offers lower saturation voltage (350mV versus 500mV), reducing power dissipation during saturation. The PBHV8115Z,115 has a lower maximum power rating (1.4 W versus 2 W) and includes automotive-grade qualification (AEC-Q100). FZT655TA is manufactured by Diodes Incorporated, while PBHV8115Z,115 is manufactured by Nexperia USA Inc.

Q: Is the PBHV8115Z,115 suitable for applications requiring 2 W power dissipation?

A: The PBHV8115Z,115 is rated for 1.4 W maximum power dissipation. Applications requiring sustained operation at 2 W power levels should use FZT655TA or FZT655TC. However, the improved saturation voltage of PBHV8115Z,115 typically results in lower actual power dissipation during switching, potentially making it suitable for applications previously designed for 2 W if thermal analysis confirms acceptable junction temperatures.

Q: Are all three parts ROHS3 compliant?

A: Yes. FZT655TC, FZT655TA, and PBHV8115Z,115 are all ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level).

Q: What is the difference in REACH compliance between these parts?

A: FZT655TC is REACH affected, while both FZT655TA and PBHV8115Z,115 are REACH unaffected. For applications subject to REACH regulations, FZT655TA or PBHV8115Z,115 are preferred substitutes.

Q: Does the PBHV8115Z,115 automotive qualification affect its use in non-automotive applications?

A: No. Automotive-grade qualification (AEC-Q100) indicates enhanced reliability testing and quality assurance. Parts qualified to automotive standards are suitable for use in non-automotive applications and provide additional assurance of component reliability.

Q: Are the package dimensions identical between FZT655TC, FZT655TA, and PBHV8115Z,115?

A: All three parts use SOT-223 package variants (SOT-223-3 for FZT655TC and FZT655TA; SOT-223 for PBHV8115Z,115). These packages share identical footprints and pin configurations, ensuring PCB layout compatibility without modification.