ST13003N Equivalent & Substitute Parts

Part Overview

The ST13003N is an NPN bipolar junction transistor manufactured by STMicroelectronics, rated for 400 V collector-emitter breakdown voltage and 1 A maximum collector current. This device is packaged in SOT-32-3 (TO-225AA/TO-126-3) through-hole configuration with a maximum power dissipation of 20 W. The ST13003N is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity.

Substiute Parts

ST13003N

STMicroelectronicsIn Stock: 1197ST13003N Datasheet

Current PartRFQ

FJE3303H2TU

Fairchild SemiconductorIn Stock: 8708FJE3303H2TU Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ST13003N is determined by strict equivalence across the following critical parameters:

• Transistor Type: NPN configuration required
• Voltage Rating: Minimum 400 V collector-emitter breakdown voltage
• Current Rating: Minimum 1 A maximum collector current
• Power Dissipation: Minimum 20 W capability
• Mounting Type: Through-hole configuration
• Package Compatibility: TO-225AA or TO-126-3 physical form factor

The FJE3303H2TU meets all substitution criteria. This device exceeds the minimum current specification (1.5 A vs. 1 A) and maintains identical voltage and power ratings. Both devices share compatible through-hole packaging and identical maximum operating temperature.

Parameter Comparison

Engineering Selection Recommendations

The FJE3303H2TU is a direct substitute for the obsolete ST13003N based on electrical and mechanical parameter equivalence. The substitute device is manufactured by Fairchild Semiconductor and maintains active product status, ensuring long-term availability and supply chain continuity.

Both devices comply with RoHS3 requirements and carry EAR99 export classification. The FJE3303H2TU provides superior current handling capability (1.5 A vs. 1 A) within the same power envelope, offering design margin for applications previously constrained by ST13003N specifications.

Physical compatibility is confirmed through identical through-hole mounting type and TO-126-3 package designation. Pin configuration and lead spacing are equivalent, permitting direct board-level substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the FJE3303H2TU replace the ST13003N in existing designs?

A: Yes. The FJE3303H2TU meets all critical electrical parameters (400 V breakdown, 20 W power rating) and exceeds the minimum current specification. Through-hole mounting and TO-126-3 package compatibility enable direct substitution.

Q: What is the primary difference between these devices?

A: The FJE3303H2TU provides higher maximum collector current (1.5 A vs. 1 A) and includes specified transition frequency (4 MHz). Both devices maintain identical voltage and power ratings.

Q: Are there packaging considerations for this substitution?

A: Both devices use through-hole TO-126-3 packaging. Physical lead configuration and spacing are compatible, permitting direct board-level replacement without PCB modification.

Q: Why is the ST13003N obsolete?

A: The ST13003N is classified as obsolete by STMicroelectronics. The FJE3303H2TU, maintained in active production status, provides equivalent functionality with assured long-term availability.

Q: What compliance certifications apply to the substitute part?

A: The FJE3303H2TU carries RoHS3 compliance and EAR99 export classification, consistent with the original ST13003N specifications.