Equivalent & Substitute Parts Reference for 2SB1204S-TL-E

Part Overview

The 2SB1204S-TL-E is a PNP bipolar junction transistor (BJT) from onsemi, categorized under Transistors, Bipolar (BJT). It features a 50 V collector-emitter breakdown voltage, 8 A collector current, 130 MHz transition frequency, 1 W power dissipation, surface mount TP-FA package, and a DC current gain of 140 (min) at specified test conditions. The part is ROHS3 compliant and is classified as obsolete, making identification of alternative and substitute models necessary for continued engineering support, supply assurance, and design maintenance.

Substiute Parts

2SB1204S-TL-E

onsemiIn Stock: 52852SB1204S-TL-E Datasheet

Current PartRFQ

2SA2040-TL-E

onsemiIn Stock: 174702SA2040-TL-E Datasheet

MFR RecommendedRFQ

2SB1204S-TL-E

onsemiIn Stock: 52852SB1204S-TL-E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are evaluated strictly by matching or exceeding the key allowed electrical and mechanical parameters: transistor type, collector current (Ic max), collector-emitter breakdown voltage, power dissipation, DC current gain (hFE), package type, mounting style, compliance status, and temperature rating. The substitute parts listed share identical or compatible values for these required criteria and are grouped based solely on these parameters.

Parameter Comparison

Engineering Selection Recommendations

Selection prioritization is based solely on product status and regulatory compliance. The main part 2SB1204S-TL-E is obsolete, but remains ROHS3 compliant and REACH unaffected. The substitute 2SA2040-TL-E is active, ROHS3 compliant, and shares equivalent environmental certifications and regulatory status. Preferred selection should be directed toward active parts to ensure long-term supply continuity and consistent regulatory compliance.

Frequently Asked Questions (FAQ)

Q1: What are the substitution criteria for 2SB1204S-TL-E?
Only substitute parts matching the transistor type, collector current rating, voltage rating, power dissipation, DC current gain, package, mounting style, and regulatory compliance are considered compatible.

Q2: Can 2SA2040-TL-E directly replace 2SB1204S-TL-E in surface mount designs?
Yes, both use the TP-FA supplier device package, TO-252-3, DPAK (2 Leads + Tab), and support surface mount configuration consistent with the original part.

Q3: Are there differences in gain or frequency that affect form-fit-function compatibility?
The substitute part (2SA2040-TL-E) maintains or exceeds minimum DC current gain and transition frequency specified for the primary part within allowed operating conditions and mechanical standards.

Q4: Is regulatory compliance maintained with substitute parts?
Both parts are ROHS3 compliant and REACH unaffected, supporting regulatory and environmental requirements.

Q5: What should be considered regarding product lifecycle status?
Product status is a primary consideration; obsolete status of 2SB1204S-TL-E necessitates transitioning to active equivalents such as 2SA2040-TL-E for ongoing engineering and supply assurance.