FZT853TC Equivalent & Substitute Parts

Part Overview

The FZT853TC is an NPN bipolar junction transistor manufactured by Diodes Incorporated, rated for 100 V collector-emitter breakdown voltage and 6 A maximum collector current in a surface mount SOT-223-3 package. This device is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value
Transistor Type	NPN
Current - Collector (Ic) (Max)	6 A
Voltage - Collector Emitter Breakdown (Max)	100 V
Power - Max	3 W
Frequency - Transition	130 MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 2A, 2V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Package / Case	SOT-223-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the FZT853TC is determined by electrical and mechanical compatibility across the following critical parameters: NPN transistor type, maximum collector current rating (6 A), maximum collector-emitter breakdown voltage (100 V), maximum power dissipation (3 W), transition frequency (130 MHz), DC current gain specification (100 @ 2A, 2V), operating temperature range (-55°C ~ 150°C), and surface mount SOT-223-3 package configuration.

Substitute parts are grouped into two categories:

Direct Equivalents (Diodes Incorporated): Parts ZX5T853GTA and ZXTN2011GTA maintain identical electrical ratings and package specifications. These components are manufactured by the same supplier and are classified as active products with full inventory availability.

Parametric Equivalent (Diodes Incorporated): Part FZT853TA shares the same base product number (FZT853) and electrical specifications as the main part, differing only in packaging format (Cut Tape versus Tape & Reel).

Manufacturer Recommended Alternatives (Nexperia USA Inc.): Parts PBSS306NZ,135 and PBSS8110Z,135 represent cross-manufacturer alternatives with reduced electrical ratings. These components maintain the 100 V collector-emitter breakdown voltage and SOT-223 package but feature lower maximum collector current and power dissipation specifications.

Parameter Comparison

Parameter	FZT853TC	ZX5T853GTA	ZXTN2011GTA	FZT853TA	PBSS306NZ,135	PBSS8110Z,135
Manufacturer	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated	Nexperia USA Inc.	Nexperia USA Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN
Current - Collector (Ic) (Max)	6 A	6 A	6 A	6 A	5.1 A	1 A
Voltage - Collector Emitter Breakdown (Max)	100 V	100 V	100 V	100 V	100 V	100 V
Power - Max	3 W	3 W	3 W	3 W	2 W	1.4 W
Frequency - Transition	130 MHz	130 MHz	130 MHz	130 MHz	110 MHz	100 MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 2A, 2V	100 @ 2A, 2V	100 @ 2A, 2V	100 @ 2A, 2V	100 @ 2A, 2V	150 @ 250mA, 10V
Operating Temperature Range	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	150°C	150°C
Package / Case	SOT-223-3	SOT-223-3	SOT-223-3	SOT-223-3	SOT-223	SOT-223
Vce Saturation (Max) @ Ib, Ic	340mV @ 500mA, 5A	220mV @ 500mA, 5A	220mV @ 500mA, 5A	340mV @ 500mA, 5A	300mV @ 255mA, 5.1A	200mV @ 100mA, 1A
Current - Collector Cutoff (Max)	10nA (ICBO)	20nA (ICBO)	50nA (ICBO)	10nA (ICBO)	100nA (ICBO)	100nA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Affected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Primary Substitutes (Full Electrical Equivalence):

ZX5T853GTA and ZXTN2011GTA are direct electrical equivalents to the FZT853TC, maintaining identical collector current (6 A), collector-emitter breakdown voltage (100 V), power dissipation (3 W), and transition frequency (130 MHz) specifications. Both components are active products manufactured by Diodes Incorporated with substantial inventory availability (24,300 and 20,400 units respectively). These parts are ROHS3 compliant and REACH unaffected, providing regulatory advantage over the obsolete main part. Selection between these two direct equivalents is determined by packaging format requirements (Tape & Reel).

FZT853TA is a parametric equivalent sharing the base product number FZT853 with identical electrical specifications and ROHS3 compliance. This part is available in Cut Tape packaging with the highest inventory level (37,410 units) and is classified as active. This component is suitable for applications where packaging format does not impose constraints.

Secondary Substitutes (Reduced Electrical Ratings):

PBSS306NZ,135 (Nexperia USA Inc.) maintains the 100 V collector-emitter breakdown voltage and SOT-223 package but reduces maximum collector current to 5.1 A and power dissipation to 2 W. Transition frequency is reduced to 110 MHz. This component carries automotive grade qualification (AEC-Q100) and is REACH unaffected.

PBSS8110Z,135 (Nexperia USA Inc.) is suitable only for applications with significantly reduced current requirements, featuring 1 A maximum collector current and 1.4 W power dissipation. This component maintains 100 V collector-emitter breakdown voltage and carries automotive grade qualification (AEC-Q100).

Selection of Nexperia alternatives is appropriate only when application current and power requirements are within the reduced specifications of these devices.

Frequently Asked Questions (FAQ)

Q: Can ZX5T853GTA directly replace FZT853TC without circuit modification?

A: Yes. ZX5T853GTA maintains identical electrical specifications across all critical parameters: 6 A maximum collector current, 100 V collector-emitter breakdown voltage, 3 W power dissipation, 130 MHz transition frequency, and 100 minimum DC current gain. Both components are housed in SOT-223-3 packages with identical pinout. The primary difference is packaging format (Tape & Reel versus original format) and improved REACH compliance status.

Q: What is the difference between FZT853TA and ZX5T853GTA?

A: Both components are electrical equivalents with identical ratings. FZT853TA is supplied in Cut Tape packaging, while ZX5T853GTA is supplied in Tape & Reel format. FZT853TA shares the base product number FZT853 with the obsolete FZT853TC. Selection between these parts is determined by assembly process requirements and packaging format compatibility.

Q: Are PBSS306NZ,135 and PBSS8110Z,135 suitable for all FZT853TC applications?

A: No. These Nexperia components feature reduced electrical ratings and are suitable only for applications where maximum collector current and power dissipation requirements are within their specifications. PBSS306NZ,135 supports 5.1 A maximum collector current (versus 6 A for FZT853TC), and PBSS8110Z,135 supports only 1 A. Applications requiring the full 6 A rating must use Diodes Incorporated equivalents (ZX5T853GTA, ZXTN2011GTA, or FZT853TA).

Q: What is the significance of REACH compliance status?

A: The obsolete FZT853TC is classified as REACH Affected, while all active substitute parts are REACH Unaffected. This indicates that substitute components comply with current European chemical regulations without restriction. For designs subject to REACH compliance requirements, active substitute parts provide regulatory advantage.

Q: Does package designation SOT-223 differ from SOT-223-3?

A: SOT-223-3 and SOT-223 refer to the same physical package with three leads. The "-3" designation explicitly indicates the three-lead configuration. All substitute parts listed are compatible with SOT-223-3 footprints and assembly processes.

Q: What inventory considerations apply to substitute selection?

A: FZT853TA offers the highest inventory availability (37,410 units), followed by ZX5T853GTA (24,300 units) and ZXTN2011GTA (20,400 units). All three Diodes Incorporated equivalents maintain substantial stock levels suitable for production requirements. Nexperia alternatives (PBSS306NZ,135 and PBSS8110Z,135) have lower inventory levels (2,160 and 13,598 units respectively) and should be evaluated based on application-specific current and power requirements.

Q: Are there differences in saturation voltage characteristics between substitute parts?

A: Yes. FZT853TC and FZT853TA specify 340 mV saturation voltage at 500 mA base current and 5 A collector current. ZX5T853GTA and ZXTN2011GTA specify 220 mV under identical conditions, representing improved saturation performance. PBSS306NZ,135 specifies 300 mV at 255 mA base current and 5.1 A collector current. These differences are within acceptable ranges for most switching applications but should be evaluated for designs with critical saturation voltage requirements.

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