2SD1802S-TL-E Equivalent & Substitute Parts

Part Overview

The 2SD1802S-TL-E is an NPN bipolar junction transistor manufactured by onsemi, rated for 50 V collector-emitter breakdown voltage and 3 A maximum collector current. This surface mount device is housed in a TO-252-3 (DPAK) package and delivers 1 W maximum power dissipation with a transition frequency of 150 MHz. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and procurement needs.

Substiute Parts

2SD1802S-TL-E

onsemiIn Stock: 16922SD1802S-TL-E Datasheet

Current PartRFQ

2SD1802T-TL-E

onsemiIn Stock: 88352SD1802T-TL-E Datasheet

DirectRFQ

ZXT690BKQTC

Diodes IncorporatedIn Stock: 10210ZXT690BKQTC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SD1802S-TL-E is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Transistor type must be NPN
• Collector-emitter breakdown voltage must be greater than or equal to 50 V
• Maximum collector current must be greater than or equal to 3 A
• Transition frequency must be greater than or equal to 150 MHz
• Power dissipation must be greater than or equal to 1 W
• DC current gain (hFE) must support the intended application bias conditions

Mechanical Compatibility Criteria:

• Package type must be TO-252-3 (DPAK) or equivalent surface mount configuration
• Mounting type must be surface mount
• Operating temperature range must accommodate 150°C maximum junction temperature

Substitute Classification:

Direct Equivalent: 2SD1802T-TL-E is an active onsemi part with identical electrical specifications and packaging, differing only in product status (active vs. obsolete) and packaging format (tape & reel vs. cut tape).

Similar Substitute: ZXT690BKQTC is a Diodes Incorporated part meeting or exceeding all critical electrical parameters with enhanced performance characteristics and automotive qualification, suitable for applications where the original part is unavailable.

Parameter Comparison

Engineering Selection Recommendations

2SD1802T-TL-E (Direct Equivalent): This part is the primary replacement for the obsolete 2SD1802S-TL-E. Both components are manufactured by onsemi with identical electrical specifications and package configuration. The 2SD1802T-TL-E is in active production status with higher inventory availability (8800 pcs vs. 1655 pcs). Selection of this part eliminates obsolescence risk while maintaining full electrical and mechanical compatibility. Both parts carry ROHS3 compliance, REACH unaffected status, and MSL 1 rating.

ZXT690BKQTC (Similar Substitute): This Diodes Incorporated part meets all critical electrical requirements with enhanced performance characteristics. The ZXT690BKQTC provides higher power dissipation (1.6 W vs. 1 W), superior DC current gain (500 vs. 140 at 100mA, 2V), and lower collector cutoff current (20nA vs. 1µA). The part carries automotive grade qualification and AEC-Q101 certification, suitable for applications requiring automotive-level reliability. The collector-emitter breakdown voltage is 45 V, which is 5 V lower than the original specification; this substitution is valid only for applications where the 50 V rating is not a critical design constraint. All compliance certifications (ROHS3, REACH unaffected, MSL 1) are equivalent.

Frequently Asked Questions (FAQ)

Q: Can 2SD1802T-TL-E be used as a direct replacement for 2SD1802S-TL-E?

A: Yes. Both parts are manufactured by onsemi with identical electrical specifications, package type (TO-252-3 DPAK), and mounting configuration. The primary difference is product status (active vs. obsolete) and packaging format (tape & reel vs. cut tape). Electrical performance and mechanical fit are equivalent.

Q: What are the key differences between 2SD1802T-TL-E and ZXT690BKQTC?

A: The primary electrical differences are: (1) collector-emitter breakdown voltage is 45 V for ZXT690BKQTC versus 50 V for 2SD1802T-TL-E; (2) DC current gain is significantly higher for ZXT690BKQTC (500 vs. 200 at 100mA, 2V); (3) power dissipation is higher for ZXT690BKQTC (1.6 W vs. 1 W); (4) collector cutoff current is lower for ZXT690BKQTC (20nA vs. 1µA). ZXT690BKQTC carries automotive qualification (AEC-Q101) while 2SD1802T-TL-E does not. Both use identical TO-252-3 DPAK packaging.

Q: Is ZXT690BKQTC suitable for all applications using 2SD1802S-TL-E?

A: ZXT690BKQTC is suitable for applications where the 45 V collector-emitter breakdown voltage meets design requirements. If the original design requires the full 50 V rating, ZXT690BKQTC is not appropriate. For applications operating below 45 V, ZXT690BKQTC offers enhanced performance with higher current gain and lower saturation voltage.

Q: Are there packaging compatibility concerns when substituting these parts?

A: No. All three parts use identical TO-252-3 (DPAK) surface mount packaging with the same pin configuration and footprint. PCB layout and assembly processes require no modification.

Q: What compliance certifications apply to these substitute parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity level). ZXT690BKQTC additionally carries automotive grade qualification and AEC-Q101 certification, suitable for automotive applications.

Q: Which substitute part should be selected for new designs?

A: For general applications, 2SD1802T-TL-E is the recommended choice due to identical specifications and active production status. For automotive applications or designs requiring enhanced performance characteristics, ZXT690BKQTC is appropriate provided the 45 V collector-emitter breakdown voltage is acceptable.