FZTA92TC Equivalent & Substitute Parts

Part Overview

The FZTA92TC 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 300 V collector-emitter breakdown voltage with a maximum collector current of 500 mA and 2 W power dissipation capability. The FZTA92TC is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Equivalent parts must maintain electrical compatibility across voltage, current, and thermal operating ranges while accommodating the same or compatible package footprints.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Collector-Emitter Breakdown Voltage (Max)	300	V
Collector Current (Max)	500	mA
Power Dissipation (Max)	2	W
Transition Frequency	50	MHz
DC Current Gain (hFE Min)	25	@ 30 mA, 10 V
Vce Saturation (Max)	500	mV @ 2 mA, 20 mA
Operating Temperature Range	−55 to 150	°C
Package Type	SOT-223-3	Surface Mount
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the FZTA92TC is determined by strict electrical and mechanical parameter matching. The critical parameters governing substitutability are:

Electrical Parameters:

Collector-emitter breakdown voltage: 300 V (minimum requirement)
Maximum collector current: 500 mA (minimum requirement)
Power dissipation: sufficient for application requirements
Transition frequency: 50 MHz (minimum requirement for high-frequency applications)
DC current gain (hFE): 25 minimum at specified conditions
Vce saturation: 500 mV maximum at specified bias conditions

Mechanical Parameters:

Package type: SOT-223-3 or compatible SOT-223 variants
Mounting type: Surface mount
Pin configuration: TO-261-4 or TO-261AA compatible

Compliance Parameters:

RoHS3 compliance required
Moisture sensitivity level: 1 (Unlimited)

Substitute parts are classified into three categories: direct manufacturer equivalents (identical electrical specifications), manufacturer-recommended alternatives (active production status with equivalent or superior electrical performance), and parametric equivalents (matching core electrical requirements with minor specification variations).

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce(br) V	Power W	fT MHz	hFE Min	Temp Range °C	Status	Package
FZTA92TC	Diodes Inc.	500	300	2.0	50	25	−55 to 150	Obsolete	SOT-223-3
DZTA92-13	Diodes Inc.	500	300	1.0	50	25	−55 to 150	Active	SOT-223-3
PZTA92T1G	onsemi	500	300	1.5	50	40	−55 to 150	Active	SOT-223
NSVPZTA92T1G	onsemi	500	300	1.5	50	40	−65 to 150	Active	SOT-223
CZTA92 TR PBFREE	Central Semiconductor	500	300	2.0	50	25	−65 to 150	Active	SOT-223
BSP16T1G	onsemi	100	300	1.5	15	30	−65 to 150	Active	SOT-223
MMJT350T1G	onsemi	500	300	0.65	—	30	−55 to 150	Active	SOT-223
PZTA92,115	Nexperia USA	100	300	1.2	50	25	−55 to 150	Active	SOT-223

Engineering Selection Recommendations

Direct Equivalent (Preferred for Pin-Compatible Replacement):

DZTA92-13 from Diodes Incorporated is the direct manufacturer equivalent. This part maintains identical electrical specifications to the FZTA92TC across collector current (500 mA), breakdown voltage (300 V), transition frequency (50 MHz), and DC current gain (25 minimum). The primary difference is reduced power dissipation (1 W versus 2 W), which is acceptable for applications not requiring the full 2 W thermal budget. DZTA92-13 is in active production status with 5,459 units in stock, ensuring long-term availability. This part is supplied in Tape & Reel packaging and is ROHS3 compliant.

Primary Substitute (Highest Electrical Performance):

PZTA92T1G from onsemi provides superior electrical characteristics while maintaining full compatibility with the FZTA92TC electrical requirements. This part exceeds the minimum DC current gain specification (40 versus 25 minimum) and offers 1.5 W power dissipation. PZTA92T1G is in active production with 77,100 units in stock, providing excellent supply continuity. Operating temperature range is −55°C to 150°C, matching the original specification. This part is ROHS3 compliant and supplied in Tape & Reel format.

Extended Temperature Range Alternative:

NSVPZTA92T1G from onsemi extends the operating temperature range to −65°C to 150°C while maintaining all critical electrical parameters (500 mA collector current, 300 V breakdown voltage, 50 MHz transition frequency). This part is suitable for applications requiring enhanced low-temperature performance. DC current gain is specified at 40 minimum, exceeding the original requirement. NSVPZTA92T1G is in active production with 3,760 units in stock.

Parametric Equivalent (Identical Thermal Performance):

CZTA92 TR PBFREE from Central Semiconductor Corp matches the original FZTA92TC across all critical parameters, including 2 W power dissipation, 500 mA collector current, 300 V breakdown voltage, and 50 MHz transition frequency. This part extends the operating temperature range to −65°C to 150°C. CZTA92 TR PBFREE is in active production with 676 units in stock and is ROHS3 compliant.

Current-Limited Alternatives (Application-Dependent):

BSP16T1G and PZTA92,115 are suitable only for applications requiring maximum collector current of 100 mA or less. These parts maintain 300 V breakdown voltage and are not recommended as direct replacements for designs requiring 500 mA collector current capability.

MMJT350T1G is suitable only for applications with reduced power dissipation requirements (650 mW maximum). This part maintains 500 mA collector current and 300 V breakdown voltage but is not recommended for designs requiring 2 W or higher power dissipation.

Frequently Asked Questions (FAQ)

Q: Can DZTA92-13 replace FZTA92TC in all applications?

A: DZTA92-13 is electrically compatible with FZTA92TC for applications where power dissipation does not exceed 1 W. The reduced power rating (1 W versus 2 W) is the only specification difference. Applications requiring thermal dissipation above 1 W must use PZTA92T1G, NSVPZTA92T1G, or CZTA92 TR PBFREE.

Q: What is the difference between PZTA92T1G and NSVPZTA92T1G?

A: Both parts are electrically identical with 500 mA collector current, 300 V breakdown voltage, 50 MHz transition frequency, and 1.5 W power dissipation. The primary difference is operating temperature range: PZTA92T1G operates from −55°C to 150°C, while NSVPZTA92T1G operates from −65°C to 150°C. NSVPZTA92T1G is required for applications requiring operation below −55°C.

Q: Are all substitute parts available in the same package?

A: All substitute parts are supplied in SOT-223 surface mount packages compatible with SOT-223-3 footprints. Package designations vary slightly (SOT-223-3, SOT-223, SOT-223 (TO-261)) but all are mechanically and electrically compatible with the original FZTA92TC footprint.

Q: Can BSP16T1G or PZTA92,115 be used as replacements?

A: BSP16T1G and PZTA92,115 are not suitable as direct replacements because they are limited to 100 mA maximum collector current, compared to the FZTA92TC specification of 500 mA. These parts are only acceptable for applications designed for 100 mA or lower collector current.

Q: What is the significance of the DC current gain (hFE) difference between parts?

A: The FZTA92TC specifies minimum hFE of 25 at 30 mA collector current and 10 V Vce. Substitute parts with higher hFE values (such as PZTA92T1G and NSVPZTA92T1G at 40 minimum) provide improved current amplification and are fully compatible. Higher hFE does not create incompatibility; it represents enhanced performance.

Q: Is CZTA92 TR PBFREE recommended over PZTA92T1G?

A: Both parts are acceptable substitutes. CZTA92 TR PBFREE matches the original 2 W power dissipation specification exactly, while PZTA92T1G provides 1.5 W. Selection depends on application thermal requirements. PZTA92T1G offers higher inventory availability (77,100 units versus 676 units).

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all substitute parts listed are ROHS3 compliant. All parts maintain moisture sensitivity level 1 (Unlimited), matching the original FZTA92TC specification.

Q: What packaging format should be specified for production?

A: All substitute parts are available in Tape & Reel (TR) format suitable for automated assembly. PZTA92,115 is also available in Cut Tape (CT) & Digi-Reel® format. Specify Tape & Reel format for high-volume production applications.

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