FZT956TC Equivalent & Substitute Parts

Part Overview

The FZT956TC is a PNP bipolar junction transistor manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-223-3 package. This device operates at 200 V collector-emitter breakdown voltage with a maximum collector current of 2 A and 3 W power dissipation capability. The FZT956TC is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and production continuity. Active alternatives with comparable electrical characteristics are available from both Diodes Incorporated and onsemi manufacturers.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) Max	2	A
Voltage - Collector Emitter Breakdown (Max)	200	V
Power - Max	3	W
Frequency - Transition	110	MHz
DC Current Gain (hFE) Min @ Ic, Vce	100 @ 1A, 5V	—
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOT-223-3	—

Substitute Part Grouping Explanation

Substitute parts for the FZT956TC are categorized based on electrical parameter compatibility and product status. The substitution logic follows these criteria:

Parametric Equivalents maintain identical or equivalent electrical specifications across all critical parameters: collector current (2 A), collector-emitter breakdown voltage (200 V), power dissipation (3 W), transition frequency (110 MHz), and DC current gain (100 @ 1A, 5V). These parts differ only in packaging format (Cut Tape versus Tape & Reel) and product status (Active versus Obsolete).

Direct Manufacturer Substitutes from Diodes Incorporated share the same voltage and current ratings (200 V, 2 A) and package type (SOT-223-3) but exhibit reduced power dissipation (1.25 W versus 3 W) and slightly lower transition frequency (105 MHz versus 110 MHz). These parts remain within acceptable operating parameters for most applications.

Cross-Manufacturer Alternatives from onsemi (PZT2907AT1G and PZT2907AT3G) operate at reduced voltage (60 V versus 200 V) and current (600 mA versus 2 A) ratings. These parts are suitable only for applications with lower voltage and current requirements and should not be used as direct substitutes in circuits designed for the full 200 V, 2 A specification.

Parameter Comparison

Parameter	FZT956TC	FZT956TA	ZXTP03200BGTA	PZT2907AT1G	PZT2907AT3G
Manufacturer	Diodes Inc.	Diodes Inc.	Diodes Inc.	onsemi	onsemi
Product Status	Obsolete	Active	Active	Active	Active
Transistor Type	PNP	PNP	PNP	PNP	PNP
Ic (Max)	2 A	2 A	2 A	600 mA	600 mA
Vce Breakdown (Max)	200 V	200 V	200 V	60 V	60 V
Power - Max	3 W	3 W	1.25 W	1.5 W	1.5 W
Frequency - Transition	110 MHz	110 MHz	105 MHz	200 MHz	200 MHz
DC Current Gain (hFE) Min	100 @ 1A, 5V	100 @ 1A, 5V	100 @ 1A, 5V	100 @ 150mA, 10V	100 @ 150mA, 10V
Operating Temperature	-55 to 150°C	-55 to 150°C	-55 to 150°C	-65 to 150°C	-65 to 150°C
Package / Case	SOT-223-3	SOT-223-3	SOT-223-3	SOT-223	SOT-223
Packaging Format	—	Cut Tape (CT)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (200 V, 2 A Applications):

The FZT956TA is the primary recommended substitute for the obsolete FZT956TC. Both parts are manufactured by Diodes Incorporated and maintain identical electrical specifications: 200 V collector-emitter breakdown voltage, 2 A maximum collector current, 3 W power dissipation, 110 MHz transition frequency, and 100 minimum DC current gain. The FZT956TA holds Active product status and is available in Cut Tape packaging format. This part provides direct functional equivalence with no circuit modifications required.

The ZXTP03200BGTA from Diodes Incorporated is an alternative within the same manufacturer family. It maintains the 200 V voltage rating and 2 A current rating but operates at reduced power dissipation (1.25 W versus 3 W) and slightly lower transition frequency (105 MHz versus 110 MHz). This part is suitable for applications where thermal dissipation is not a limiting factor and is available in Tape & Reel packaging format with higher inventory availability (25,600 units).

For Reduced Voltage/Current Applications:

The PZT2907AT1G and PZT2907AT3G from onsemi are not direct substitutes for the FZT956TC due to significantly reduced electrical ratings (60 V versus 200 V, 600 mA versus 2 A). These parts are suitable only for circuits designed to operate within their specified voltage and current limits. Both onsemi parts are Active products with higher transition frequency (200 MHz) and are available in multiple packaging formats.

Compliance and Regulatory Considerations:

All recommended substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) rating, consistent with the original FZT956TC. The FZT956TA and ZXTP03200BGTA carry REACH Unaffected status, while the original part is REACH Affected. All parts are classified under ECCN EAR99 and HTSUS 8541.29.0075.

Frequently Asked Questions (FAQ)

Q: Can the FZT956TA be used as a direct replacement for the FZT956TC?

A: Yes. The FZT956TA is a parametric equivalent with identical electrical specifications: 200 V collector-emitter breakdown voltage, 2 A maximum collector current, 3 W power dissipation, 110 MHz transition frequency, and 100 minimum DC current gain. The primary difference is product status (Active versus Obsolete) and packaging format (Cut Tape versus unspecified). No circuit modifications are required.

Q: What is the difference between the FZT956TA and ZXTP03200BGTA?

A: Both parts are manufactured by Diodes Incorporated and share 200 V voltage and 2 A current ratings. The ZXTP03200BGTA operates at reduced power dissipation (1.25 W versus 3 W) and slightly lower transition frequency (105 MHz versus 110 MHz). The ZXTP03200BGTA is suitable for applications where power dissipation is not a critical design parameter and offers higher inventory availability in Tape & Reel format.

Q: Are the onsemi PZT2907AT1G and PZT2907AT3G suitable replacements?

A: The PZT2907AT1G and PZT2907AT3G are not direct substitutes for the FZT956TC. These parts operate at 60 V collector-emitter breakdown voltage and 600 mA maximum collector current, compared to the FZT956TC specifications of 200 V and 2 A. These parts are suitable only for applications with lower voltage and current requirements. Using these parts in circuits designed for 200 V, 2 A operation will result in device failure.

Q: What packaging formats are available for substitute parts?

A: The FZT956TA is available in Cut Tape (CT) format. The ZXTP03200BGTA is available in Tape & Reel (TR) format. The onsemi PZT2907AT1G is available in Cut Tape (CT) and Digi-Reel format. The onsemi PZT2907AT3G is available in Tape & Reel (TR) format. All parts use the SOT-223 surface mount package.

Q: Do all substitute parts meet the same compliance requirements as the FZT956TC?

A: All substitute parts listed maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) rating. The FZT956TA and ZXTP03200BGTA carry REACH Unaffected status, while the original FZT956TC is REACH Affected. All parts are classified under ECCN EAR99 and HTSUS 8541.29.0075.

Q: What is the operating temperature range for substitute parts?

A: The FZT956TA and ZXTP03200BGTA operate across -55°C to 150°C (TJ), identical to the FZT956TC. The onsemi PZT2907AT1G and PZT2907AT3G operate across -65°C to 150°C (TJ), providing an extended lower temperature range.

Q: Which substitute part has the highest inventory availability?

A: The ZXTP03200BGTA from Diodes Incorporated has the highest inventory availability at 25,600 units in stock. The FZT956TA has 5,802 units available. The onsemi PZT2907AT1G has 125,200 units available, but this part is not a direct substitute due to reduced electrical ratings.

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