TN2907A_D26Z Equivalent & Substitute Parts

Part Overview

The TN2907A_D26Z is a PNP bipolar junction transistor manufactured by onsemi, rated for 60 V collector-emitter breakdown voltage and 800 mA maximum collector current. This device is packaged in TO-226-3 (TO-92-3 Long Body with Formed Leads) configuration and is designed for through-hole mounting applications. The part carries an obsolete product status, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Collector Current (Max)	800	mA
Collector-Emitter Breakdown Voltage (Max)	60	V
Vce Saturation (Max)	1.6	V @ 50mA, 500mA
DC Current Gain (hFE Min)	100	@ 150mA, 10V
Power Dissipation (Max)	625	mW
Operating Temperature Range	-55 to 150	°C
Mounting Type	Through Hole	—
Package	TO-226-3, TO-92-3	—

Substitute Part Grouping Explanation

Substitution of the TN2907A_D26Z is determined by electrical and mechanical parameter compatibility within the PNP bipolar transistor category. The critical parameters governing substitution are:

Electrical Parameters:

Collector current rating (800 mA maximum)
Collector-emitter breakdown voltage (60 V minimum)
Saturation voltage characteristics (1.6 V @ specified conditions)
DC current gain (100 minimum @ 150mA, 10V)
Power dissipation capability (625 mW)
Operating temperature range (-55°C to 150°C)

Mechanical Parameters:

Through-hole mounting configuration
TO-226-3 or TO-92-3 package compatibility
Formed lead geometry

Substitute parts are classified into two categories:

Direct Substitutes: Parts maintaining identical electrical specifications (800 mA collector current) with active product status and enhanced specifications (200 MHz transition frequency, improved cutoff current characteristics).

Similar Substitutes: Parts with reduced collector current rating (600 mA) but maintaining all other critical electrical parameters and package compatibility. These parts are suitable for applications where the full 800 mA rating is not required.

Parameter Comparison

Parameter	TN2907A_D26Z	PN2907ATA	PN2907ATF	PN2907ATFR	KSP2907ACTA	KSP2907ATA
Manufacturer	onsemi	onsemi	Fairchild Semiconductor	onsemi	onsemi	Fairchild Semiconductor
Product Status	Obsolete	Active	Active	Active	Active	Active
Transistor Type	PNP	PNP	PNP	PNP	PNP	PNP
Ic (Max)	800 mA	800 mA	800 mA	800 mA	600 mA	600 mA
Vce Breakdown (Max)	60 V	60 V	60 V	60 V	60 V	60 V
Vce Saturation (Max)	1.6 V @ 50mA, 500mA	1.6 V @ 50mA, 500mA	1.6 V @ 50mA, 500mA	1.6 V @ 50mA, 500mA	1.6 V @ 50mA, 500mA	1.6 V @ 50mA, 500mA
DC Current Gain (hFE Min)	100 @ 150mA, 10V	100 @ 150mA, 10V	100 @ 150mA, 10V	100 @ 150mA, 10V	100 @ 150mA, 10V	100 @ 150mA, 10V
Power (Max)	625 mW	625 mW	625 mW	625 mW	625 mW	625 mW
Frequency - Transition	—	200 MHz	200 MHz	200 MHz	200 MHz	200 MHz
Operating Temperature	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	to 150°C	to 150°C
Package	TO-226-3, TO-92-3	TO-92-3	TO-92-3	TO-92-3	TO-92-3	TO-92-3
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	—	ROHS3 Compliant	—	ROHS3 Compliant	ROHS3 Compliant	—
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For Direct Replacement (Full 800 mA Rating Required):

PN2907ATA, PN2907ATF, and PN2907ATFR are direct electrical equivalents to the TN2907A_D26Z. All three parts maintain the 800 mA collector current specification and 60 V breakdown voltage. These parts carry active product status, ensuring long-term availability and supply chain continuity.

PN2907ATA (onsemi, Cut Tape packaging) and PN2907ATFR (onsemi, Cut Tape packaging) both carry ROHS3 compliance certification, meeting modern environmental and regulatory requirements. PN2907ATF (Fairchild Semiconductor, Bulk packaging) provides the highest inventory availability at 56,113 pieces.

All three direct substitutes feature 200 MHz transition frequency specification, which exceeds the TN2907A_D26Z specification and provides enhanced switching performance characteristics.

For Current-Limited Applications (600 mA Rating Acceptable):

KSP2907ACTA (onsemi, Cut Tape) and KSP2907ATA (Fairchild Semiconductor, Bulk) are suitable alternatives where the application does not require the full 800 mA collector current capability. Both parts maintain identical saturation voltage, current gain, power dissipation, and package compatibility. KSP2907ACTA carries ROHS3 compliance. These parts offer the highest inventory availability among all substitutes, with 10,300 and 17,400 pieces respectively.

Compliance Considerations:

All substitute parts maintain REACH Unaffected status, consistent with the original TN2907A_D26Z. Parts designated as ROHS3 Compliant (PN2907ATA, PN2907ATFR, KSP2907ACTA) are suitable for applications subject to RoHS Directive requirements.

Frequently Asked Questions (FAQ)

Q: Can PN2907ATA be used as a direct replacement for TN2907A_D26Z?

A: Yes. PN2907ATA maintains identical electrical specifications for collector current (800 mA), breakdown voltage (60 V), saturation voltage (1.6 V), current gain (100 minimum), and power dissipation (625 mW). Both parts use TO-92-3 through-hole packaging. PN2907ATA carries active product status and ROHS3 compliance, providing improved supply chain continuity compared to the obsolete TN2907A_D26Z.

Q: What is the difference between PN2907ATF and PN2907ATFR?

A: Both parts are electrically identical with 800 mA collector current and 60 V breakdown voltage. The primary differences are manufacturer (PN2907ATF is Fairchild Semiconductor; PN2907ATFR is onsemi) and packaging format (PN2907ATF is Bulk; PN2907ATFR is Cut Tape). PN2907ATFR carries ROHS3 compliance certification. PN2907ATF offers significantly higher inventory availability.

Q: Can KSP2907ACTA replace TN2907A_D26Z in all applications?

A: KSP2907ACTA is suitable for applications where the collector current requirement does not exceed 600 mA. The part maintains identical saturation voltage, current gain, power dissipation, and operating temperature range. If the application requires the full 800 mA collector current capability, direct substitutes (PN2907ATA, PN2907ATF, or PN2907ATFR) must be used instead.

Q: Are all substitute parts compatible with the TO-226-3 package footprint?

A: All substitute parts are specified for TO-92-3 through-hole package configuration. The TN2907A_D26Z is specified for both TO-226-3 and TO-92-3 Long Body (Formed Leads) packages. Verify PCB footprint compatibility with the specific package variant before component selection.

Q: What is the significance of the 200 MHz transition frequency in the substitute parts?

A: The 200 MHz transition frequency specification in PN2907ATA, PN2907ATF, PN2907ATFR, KSP2907ACTA, and KSP2907ATA indicates enhanced switching speed capability compared to the TN2907A_D26Z. This specification is provided for reference and does not affect substitution suitability for DC or low-frequency applications. Applications requiring specific frequency response characteristics should reference detailed device datasheets.

Q: Which substitute part offers the best supply chain availability?

A: PN2907ATF (Fairchild Semiconductor) provides the highest inventory availability at 56,113 pieces. For onsemi-sourced alternatives, PN2907ATFR offers 3,300 pieces in Cut Tape packaging with ROHS3 compliance.

Q: Are there any temperature range differences between substitute parts?

A: TN2907A_D26Z, PN2907ATA, PN2907ATF, and PN2907ATFR all specify -55°C to 150°C operating temperature range. KSP2907ACTA and KSP2907ATA specify operation to 150°C maximum without explicit lower temperature limit documentation. For applications requiring full -55°C to 150°C range, use TN2907A_D26Z direct substitutes.

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