STT13005D Equivalent & Substitute Parts

Part Overview

The STT13005D is a through-hole NPN bipolar junction transistor manufactured by STMicroelectronics, rated for 400 V collector-emitter breakdown voltage and 2 A maximum collector current with 45 W power dissipation capability. The device is packaged in SOT-32-3 (TO-225AA/TO-126-3 compatible) configuration and is classified as obsolete. Due to its obsolete product status, equivalent substitute parts with compatible electrical and mechanical specifications are necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	400	V
Current - Collector (Ic) (Max)	2	A
Power - Max	45	W
Vce Saturation (Max) @ Ib, Ic	1.5V @ 400mA, 1.6A	—
DC Current Gain (hFE) (Min) @ Ic, Vce	10 @ 500mA, 5V	—
Operating Temperature (TJ)	150	°C
Mounting Type	Through Hole	—
Package / Case	TO-225AA, TO-126-3	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the STT13005D are identified based on the following critical electrical and mechanical parameters:

Primary Matching Criteria:

Transistor Type: NPN configuration
Voltage - Collector Emitter Breakdown: 400 V minimum rating
Mounting Type: Through Hole
Package Compatibility: TO-126-3 or equivalent footprint
RoHS Compliance: ROHS3 Compliant

Secondary Compatibility Factors:

Current - Collector (Ic) (Max): Equal to or greater than 2 A
Vce Saturation characteristics within acceptable operating range
Operating Temperature: 150°C or higher
Regulatory Compliance: REACH Unaffected, EAR99 classification

The TS13005CK B0G meets all primary and secondary criteria, with enhanced current handling capability (3 A vs. 2 A) and improved cutoff current characteristics, while maintaining identical voltage rating and thermal operating range.

Parameter Comparison

Parameter	STT13005D (Main Part)	TS13005CK B0G (Substitute)	Unit
Manufacturer	STMicroelectronics	Taiwan Semiconductor Corporation	—
Product Status	Obsolete	Active	—
Transistor Type	NPN	NPN	—
Voltage - Collector Emitter Breakdown (Max)	400	400	V
Current - Collector (Ic) (Max)	2	3	A
Vce Saturation (Max) @ Ib, Ic	1.5V @ 400mA, 1.6A	1.5V @ 500mA, 2.5A	—
Current - Collector Cutoff (Max)	250	10	µA
DC Current Gain (hFE) (Min) @ Ic, Vce	10 @ 500mA, 5V	24 @ 425mA, 2V	—
Power - Max	45	20	W
Operating Temperature (TJ)	150	150	°C
Mounting Type	Through Hole	Through Hole	—
Package / Case	TO-225AA, TO-126-3	TO-225AA, TO-126-3	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
REACH Status	REACH Unaffected	REACH Unaffected	—
ECCN	EAR99	EAR99	—

Engineering Selection Recommendations

The TS13005CK B0G is a direct substitute for the obsolete STT13005D based on the following engineering factors:

Product Status Alignment: The STT13005D is classified as obsolete, making the active-status TS13005CK B0G the appropriate replacement for new designs and production continuity.

Electrical Compatibility: Both devices share identical 400 V collector-emitter breakdown voltage rating and through-hole mounting configuration. The TS13005CK B0G provides higher maximum collector current (3 A vs. 2 A), which is compatible with applications designed for the 2 A specification.

Regulatory Compliance: Both parts maintain ROHS3 compliance, REACH Unaffected status, and EAR99 export classification, ensuring equivalent regulatory standing for procurement and deployment.

Thermal Performance: Identical 150°C maximum junction temperature rating ensures equivalent thermal operating envelope.

Package Compatibility: Both devices utilize TO-126-3 packaging with identical footprint and pinout, enabling direct mechanical substitution without PCB redesign.

The TS13005CK B0G is suitable for direct replacement in applications where the STT13005D was previously specified, with the understanding that the substitute part offers enhanced current handling capability and improved cutoff current characteristics.

Frequently Asked Questions (FAQ)

Q: Can the TS13005CK B0G directly replace the STT13005D in existing designs?

A: Yes. Both devices share identical 400 V voltage rating, TO-126-3 package configuration, and 150°C operating temperature. The TS13005CK B0G provides higher current capability (3 A vs. 2 A), which is compatible with designs rated for 2 A operation.

Q: What is the primary reason for substitution?

A: The STT13005D is classified as obsolete. The TS13005CK B0G is an active-status equivalent that maintains electrical and mechanical compatibility while ensuring ongoing component availability.

Q: Are there package compatibility concerns?

A: No. Both the STT13005D and TS13005CK B0G utilize TO-126-3 packaging with identical pinout and footprint. No PCB modifications are required for substitution.

Q: How do the power ratings compare?

A: The STT13005D is rated for 45 W maximum power dissipation, while the TS13005CK B0G is rated for 20 W. Applications must ensure that actual power dissipation does not exceed 20 W when using the substitute part.

Q: Are regulatory certifications equivalent?

A: Yes. Both parts are ROHS3 compliant, REACH Unaffected, and classified as EAR99 for export purposes. Regulatory standing is equivalent.

Q: What are the key electrical differences?

A: The TS13005CK B0G offers higher maximum collector current (3 A vs. 2 A), lower collector cutoff current (10 µA vs. 250 µA), and higher DC current gain (24 vs. 10 minimum). Vce saturation characteristics are comparable across the specified operating ranges.

Q: Is thermal management different between the two parts?

A: Both devices operate at identical maximum junction temperature (150°C). However, the lower power rating of the TS13005CK B0G (20 W vs. 45 W) may require thermal design review in high-dissipation applications.

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