FPN560 Equivalent & Substitute Parts

Part Overview

The FPN560 is an NPN bipolar junction transistor manufactured by onsemi, rated for 60V collector-emitter breakdown voltage and 3A maximum collector current. Designed for through-hole mounting in TO-226 package configuration, this component operates across a temperature range of -55°C to 150°C with 1W maximum power dissipation and 75MHz transition frequency.

The FPN560 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where the original part is no longer procurable from primary sources.

Key Parameters

Parameter	FPN560 Specification
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	60 V
Current - Collector (Ic) (Max)	3 A
Power - Max	1 W
Frequency - Transition	75 MHz
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-226-3, TO-92-3 Long Body
Vce Saturation (Max)	350mV @ 200mA, 2A
Current - Collector Cutoff (Max)	100nA (ICBO)
DC Current Gain (hFE) (Min)	100 @ 500mA, 2V
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the FPN560 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN (required match)
Voltage - Collector Emitter Breakdown: minimum 60V (equal or higher acceptable)
Current - Collector (Ic) (Max): minimum 3A (equal or higher acceptable)
Power - Max: minimum 1W (equal or higher acceptable)
Mounting Type: Through Hole (required match)
Operating Temperature Range: must encompass or exceed -55°C to 150°C

Secondary Compatibility Factors:

Package compatibility: TO-226, TO-92, or E-Line (TO-92 compatible) configurations
Vce Saturation characteristics within acceptable operating margins
Transition frequency: 75MHz or higher acceptable for signal integrity

Substitute parts are grouped into two categories based on current rating capacity:

Category A - Full Current Capacity (≥3A): Parts rated for 3A or higher collector current, providing direct functional replacement without derating.

Category B - Reduced Current Capacity (<3A): Parts rated below 3A, suitable for applications where the full 3A specification is not required or where circuit design permits operation at lower current levels.

Parameter Comparison

Parameter	FPN560	STSA1805-AP	ZTX451	ZTX651	ZTX651STZ	ZTX692B	ZTX692BSTZ
Manufacturer	onsemi	STMicroelectronics	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	60 V	60 V	60 V	60 V	60 V	70 V	70 V
Current - Collector (Ic) (Max)	3 A	5 A	1 A	2 A	2 A	1 A	1 A
Power - Max	1 W	1.1 W	1 W	1 W	1 W	1 W	1 W
Frequency - Transition	75 MHz	150 MHz	150 MHz	175 MHz	175 MHz	150 MHz	150 MHz
Operating Temperature Range	-55°C ~ 150°C	150°C (TJ)	-55°C ~ 200°C	-55°C ~ 200°C	-55°C ~ 200°C	-55°C ~ 200°C	-55°C ~ 200°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-226-3, TO-92-3 Long Body	TO-226-3, TO-92-3 (TO-226AA) Formed Leads	E-Line-3	E-Line-3	E-Line-3, Formed Leads	E-Line-3	E-Line-3, Formed Leads
Vce Saturation (Max)	350mV @ 200mA, 2A	600mV @ 200mA, 5A	350mV @ 15mA, 150mA	500mV @ 200mA, 2A	500mV @ 200mA, 2A	500mV @ 10mA, 1A	500mV @ 10mA, 1A
Current - Collector Cutoff (Max)	100nA (ICBO)	100nA (ICBO)	100nA (ICBO)	100nA (ICBO)	10µA (ICBO)	100nA (ICBO)	100nA (ICBO)
Product Status	Obsolete	Last Time Buy	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

STSA1805-AP (STMicroelectronics)

STSA1805-AP provides the closest functional replacement for the FPN560 with superior current capacity (5A vs. 3A). This part exceeds all electrical requirements of the original specification while maintaining 60V breakdown voltage rating. The device is rated for 1.1W power dissipation and 150MHz transition frequency, both improvements over the FPN560. STSA1805-AP carries ROHS3 compliance and is classified as Last Time Buy, indicating continued availability with defined procurement windows. Package configuration is TO-92AP (TO-226AA) with formed leads, compatible with standard through-hole mounting. This part is suitable for direct substitution in applications requiring full 3A current capacity.

ZTX651 and ZTX651STZ (Diodes Incorporated)

ZTX651 and ZTX651STZ are functionally equivalent for applications requiring 2A maximum collector current. Both parts maintain 60V breakdown voltage and 1W power dissipation. ZTX651STZ offers superior transition frequency (175MHz) and is available in cut tape packaging. Both variants are ROHS3 compliant and classified as Active products, ensuring long-term availability. E-Line package configuration (TO-92 compatible) provides mechanical compatibility with standard through-hole mounting. These parts are suitable for substitution in circuits where collector current does not exceed 2A.

ZTX692B and ZTX692BSTZ (Diodes Incorporated)

ZTX692B and ZTX692BSTZ are suitable for applications requiring 1A maximum collector current with enhanced voltage margin (70V breakdown vs. 60V). Both parts maintain 1W power dissipation and 150MHz transition frequency. ZTX692BSTZ is available in tape & box packaging. Both variants are ROHS3 compliant and classified as Active products. E-Line package configuration provides mechanical compatibility. These parts are suitable for substitution in lower-current applications where the additional voltage headroom is beneficial.

ZTX451 (Diodes Incorporated)

ZTX451 is suitable for applications requiring 1A maximum collector current. This part maintains 60V breakdown voltage and 1W power dissipation with 150MHz transition frequency. ZTX451 is ROHS3 compliant and classified as Active, ensuring availability. E-Line package configuration provides mechanical compatibility. Operating temperature range extends to 200°C, exceeding the FPN560 specification. This part is suitable for substitution in lower-current applications.

Frequently Asked Questions (FAQ)

Q: Can STSA1805-AP directly replace FPN560 in all applications?

A: STSA1805-AP meets or exceeds all electrical specifications of the FPN560 (60V breakdown, 5A vs. 3A current, 1.1W vs. 1W power). The TO-92AP package is mechanically compatible with standard through-hole mounting. Direct substitution is valid for applications where the original FPN560 specifications are required. Verify PCB layout accommodates the specific lead configuration of the TO-92AP package variant.

Q: What is the difference between ZTX651 and ZTX651STZ?

A: ZTX651 and ZTX651STZ are electrically identical NPN transistors rated for 60V, 2A, with 175MHz transition frequency and 1W power dissipation. The primary difference is packaging: ZTX651 is supplied in bulk, while ZTX651STZ is supplied in cut tape (CT). ZTX651STZ specifies 10µA maximum collector cutoff current versus 100nA for ZTX651. Both are ROHS3 compliant and Active products. Selection depends on procurement and assembly requirements.

Q: Can ZTX451 or ZTX692B substitute for FPN560 in high-current applications?

A: ZTX451 and ZTX692B are rated for 1A maximum collector current, which is below the FPN560 specification of 3A. These parts are not suitable for applications requiring the full 3A current capacity. Use these parts only in circuits where collector current does not exceed 1A. For applications requiring 2A to 3A current capacity, use STSA1805-AP or ZTX651/ZTX651STZ.

Q: What is the operating temperature difference between FPN560 and substitute parts?

A: FPN560 operates from -55°C to 150°C. STSA1805-AP specifies 150°C maximum (upper limit only). ZTX451, ZTX651, ZTX651STZ, ZTX692B, and ZTX692BSTZ all operate from -55°C to 200°C, exceeding the FPN560 range. For applications requiring the full -55°C to 150°C range, all listed substitutes are acceptable. For applications requiring operation above 150°C, verify that STSA1805-AP temperature specification is sufficient.

Q: Are all substitute parts RoHS compliant?

A: Yes. STSA1805-AP, ZTX451, ZTX651, ZTX651STZ, ZTX692B, and ZTX692BSTZ are all ROHS3 compliant. The original FPN560 RoHS status is not specified in available documentation. All substitute parts meet current environmental compliance requirements for new production and procurement.

Q: What package compatibility considerations apply to these substitutes?

A: FPN560 is specified for TO-226-3 and TO-92-3 long body packages. STSA1805-AP uses TO-92AP (TO-226AA) with formed leads. ZTX451, ZTX651, ZTX651STZ, ZTX692B, and ZTX692BSTZ use E-Line-3 package (TO-92 compatible). All packages are through-hole compatible. Verify PCB footprint and lead spacing accommodate the specific package variant selected. Formed leads may require different insertion techniques than standard leads.

Q: Which substitute part offers the best performance upgrade?

A: STSA1805-AP provides the most comprehensive performance upgrade with 5A current capacity (vs. 3A), 1.1W power (vs. 1W), and 150MHz transition frequency (vs. 75MHz). For applications where 2A current is sufficient, ZTX651 and ZTX651STZ offer 175MHz transition frequency. Selection depends on circuit requirements and thermal constraints.

Q: Is ZTX692B suitable for 60V applications?

A: ZTX692B is rated for 70V collector-emitter breakdown voltage, which exceeds the 60V requirement. This part is suitable for 60V applications and provides additional voltage margin. The 1A current rating limits use to lower-current circuits. For applications requiring both 60V and higher current capacity, use STSA1805-AP or ZTX651/ZTX651STZ.

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