PN2222ATAR Equivalent & Substitute Parts

Part Overview

The PN2222ATAR is an NPN bipolar junction transistor manufactured by onsemi, rated for 40 V collector-emitter breakdown voltage and 1 A maximum collector current. The device is packaged in TO-92-3 (TO-226AA) through-hole configuration with a maximum power dissipation of 625 mW and transition frequency of 300 MHz. The PN2222ATAR is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design support and procurement.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Collector Current (Ic) Maximum	1	A
Collector-Emitter Breakdown Voltage (Vceo)	40	V
Vce Saturation @ Ib, Ic	1 V @ 50 mA, 500 mA	—
Collector Cutoff Current (Icbo)	10	nA
DC Current Gain (hFE) Minimum @ Ic, Vce	100 @ 150 mA, 10 V	—
Power Dissipation Maximum	625	mW
Transition Frequency	300	MHz
Operating Temperature Range	-55 to 150	°C
Package Type	TO-92-3 (TO-226AA)	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution of the PN2222ATAR is determined by electrical and mechanical parameter compatibility within the NPN bipolar junction transistor category. The critical parameters governing substitution are:

Electrical Parameters:

Collector-emitter breakdown voltage (Vceo): 40 V minimum
Maximum collector current (Ic): 1 A or greater
DC current gain (hFE): 100 minimum at specified bias conditions
Vce saturation characteristics: 1 V @ 50 mA, 500 mA
Collector cutoff current (Icbo): 10 nA maximum
Power dissipation: 625 mW or greater
Transition frequency: 300 MHz or greater

Mechanical Parameters:

Package: TO-92-3 (TO-226AA) through-hole configuration
Lead formation: Formed leads compatible with standard PCB hole spacing

Substitute parts are classified into two categories: direct equivalents (identical electrical specifications) and similar alternatives (reduced maximum collector current specification).

Parameter Comparison

Part Number	Manufacturer	Product Status	Ic (Max)	Vceo (Max)	Power (Max)	Frequency	Temp Range	Package	Packaging Type
PN2222ATAR	onsemi	Obsolete	1 A	40 V	625 mW	300 MHz	-55 to 150°C	TO-92-3	—
PN2222ATFR	onsemi	Active	1 A	40 V	625 mW	300 MHz	-55 to 150°C	TO-92-3	Cut Tape (CT)
PN2222ABU	onsemi	Active	1 A	40 V	625 mW	300 MHz	-55 to 150°C	TO-92-3	Bulk
PN2222ATA	onsemi	Active	1 A	40 V	625 mW	300 MHz	-55 to 150°C	TO-92-3	Cut Tape (CT)
PN2222ATF	onsemi	Active	1 A	40 V	625 mW	300 MHz	-55 to 150°C	TO-92-3	Cut Tape (CT)
KSP2222ATA	Fairchild Semiconductor	Active	600 mA	40 V	625 mW	300 MHz	—	TO-92-3	Bulk

Engineering Selection Recommendations

Direct Equivalents (onsemi PN2222 Series):

PN2222ATFR, PN2222ABU, PN2222ATA, and PN2222ATF are direct electrical equivalents to the PN2222ATAR. All four parts maintain identical electrical specifications: 1 A maximum collector current, 40 V collector-emitter breakdown voltage, 625 mW power dissipation, 300 MHz transition frequency, and -55°C to 150°C operating temperature range. These parts are manufactured by onsemi under the same base product number (PN2222) and are packaged in TO-92-3 through-hole configuration.

The primary distinction among these direct equivalents is packaging format. PN2222ATFR, PN2222ATA, and PN2222ATF are supplied in Cut Tape (CT) format, while PN2222ABU is supplied in Bulk format. All direct equivalents carry active product status and ROHS3 compliance certification.

Similar Alternative (Fairchild KSP2222ATA):

The KSP2222ATA is a similar alternative manufactured by Fairchild Semiconductor. This part meets the 40 V collector-emitter breakdown voltage and 625 mW power dissipation specifications. However, the KSP2222ATA is rated for 600 mA maximum collector current, which is 400 mA lower than the PN2222ATAR specification. The KSP2222ATA is suitable for applications where collector current requirements do not exceed 600 mA. This part is supplied in Bulk packaging and carries active product status.

Compliance and Regulatory Status:

All substitute parts maintain REACH Unaffected status and EAR99 export classification consistent with the original PN2222ATAR. Direct equivalents (PN2222 series) carry ROHS3 compliance certification.

Frequently Asked Questions (FAQ)

Q: Can PN2222ATFR be used as a direct replacement for PN2222ATAR?

A: Yes. PN2222ATFR is a direct electrical equivalent with identical specifications: 1 A collector current, 40 V breakdown voltage, 625 mW power dissipation, 300 MHz transition frequency, and -55°C to 150°C operating temperature. The primary difference is packaging format (Cut Tape versus the original format). Both are manufactured by onsemi and packaged in TO-92-3 through-hole configuration.

Q: What is the difference between PN2222ABU and PN2222ATFR?

A: PN2222ABU and PN2222ATFR are electrical equivalents with identical electrical specifications. The difference is packaging format: PN2222ABU is supplied in Bulk packaging, while PN2222ATFR is supplied in Cut Tape (CT) format. Both are active products from onsemi.

Q: Can KSP2222ATA replace PN2222ATAR in all applications?

A: KSP2222ATA is a similar alternative suitable for applications where collector current does not exceed 600 mA. The KSP2222ATA is rated for 600 mA maximum collector current compared to the PN2222ATAR specification of 1 A. Applications requiring collector currents between 600 mA and 1 A require a direct equivalent (PN2222 series) rather than the KSP2222ATA.

Q: Are all substitute parts compatible with the TO-92-3 through-hole footprint?

A: Yes. All substitute parts listed are packaged in TO-92-3 (TO-226AA) through-hole configuration with formed leads. Physical footprint compatibility is maintained across all equivalents and alternatives.

Q: What is the operating temperature range for KSP2222ATA?

A: The operating temperature range for KSP2222ATA is not specified in the provided data. The PN2222 series (direct equivalents) operates from -55°C to 150°C.

Q: Do all substitute parts carry RoHS compliance?

A: The onsemi PN2222 series (PN2222ATFR, PN2222ABU, PN2222ATA, PN2222ATF) carry ROHS3 compliance certification. RoHS status for KSP2222ATA is not specified in the provided data.

Q: Which substitute part has the highest inventory availability?

A: PN2222ATF has the highest inventory availability with 38,400 pieces in stock, followed by KSP2222ATA with 55,200 pieces. For direct onsemi equivalents, PN2222ATFR has 10,856 pieces available.

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