2SD1815S-TL-E Equivalent & Substitute Parts

Part Overview

The 2SD1815S-TL-E is an NPN bipolar junction transistor manufactured by onsemi, designed for general-purpose switching and amplification applications. This surface mount device operates at maximum collector current of 3 A and collector-emitter breakdown voltage of 100 V, with a maximum power dissipation of 1 W. The part is currently in active product status with ROHS3 compliance and unlimited moisture sensitivity level rating.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits selection from equivalent alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

2SD1815S-TL-E

onsemiIn Stock: 38752SD1815S-TL-E Datasheet

Current PartRFQ

2SD1815T-TL-E

onsemiIn Stock: 56402SD1815T-TL-E Datasheet

Parametric EquivalentRFQ

MJD31C-13

Diodes IncorporatedIn Stock: 20136MJD31C-13 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2SD1815S-TL-E is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Transistor Type: NPN
• Current - Collector (Ic) (Max): 3 A
• Voltage - Collector Emitter Breakdown (Max): 100 V
• Power - Max: 1 W or greater
• Frequency - Transition: 180 MHz or greater
• Operating Temperature (TJ): 150°C or greater

Mechanical Equivalence Criteria:

• Mounting Type: Surface Mount
• Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63

Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts meeting all electrical, mechanical, and compliance parameters are classified as parametric equivalents. Parts meeting electrical and mechanical criteria but with variations in secondary parameters are classified as similar alternatives.

Parameter Comparison

Engineering Selection Recommendations

2SD1815T-TL-E (Parametric Equivalent): This part is a parametric equivalent to the 2SD1815S-TL-E, sharing identical electrical specifications and package configuration. Both parts are manufactured by onsemi and comply with ROHS3 standards. However, the 2SD1815T-TL-E carries an obsolete product status designation. Selection of this part should be limited to applications where existing inventory is available and supply chain continuity is not a concern. For new designs or long-term production requirements, the active status of the 2SD1815S-TL-E is preferred.

MJD31C-13 (Similar Alternative): The MJD31C-13 manufactured by Diodes Incorporated meets the core electrical requirements of 3 A collector current and 100 V breakdown voltage in an identical TO-252-3 DPAK package. This part is in active product status with ROHS3 compliance. Notable differences include lower transition frequency (3 MHz versus 180 MHz), higher saturation voltage (1.2V versus 400mV), and lower DC current gain at maximum collector current. The MJD31C-13 is suitable for low-frequency switching applications where the reduced transition frequency and higher saturation voltage do not impact circuit performance. High-frequency applications requiring 180 MHz operation should not use this alternative.

Frequently Asked Questions (FAQ)

Q: Can the 2SD1815T-TL-E be used as a direct replacement for the 2SD1815S-TL-E?

A: The 2SD1815T-TL-E is electrically and mechanically identical to the 2SD1815S-TL-E. Both parts share the same electrical specifications, package configuration, and compliance certifications. The primary distinction is product status: 2SD1815T-TL-E is obsolete while 2SD1815S-TL-E is active. Direct substitution is possible from an electrical standpoint, but supply availability of the obsolete part may be limited.

Q: Is the MJD31C-13 suitable for all applications using the 2SD1815S-TL-E?

A: The MJD31C-13 is not suitable for all applications. While it meets the maximum collector current (3 A) and breakdown voltage (100 V) requirements, it operates at significantly lower transition frequency (3 MHz versus 180 MHz) and exhibits higher saturation voltage (1.2V versus 400mV). Applications requiring high-frequency switching or low saturation voltage operation must use the 2SD1815S-TL-E or 2SD1815T-TL-E. The MJD31C-13 is limited to low-frequency switching applications.

Q: Are all substitute parts in the same package?

A: Yes. The 2SD1815S-TL-E, 2SD1815T-TL-E, and MJD31C-13 all use the TO-252-3 DPAK (2 Leads + Tab) package configuration, designated as SC-63. This ensures mechanical compatibility and identical PCB footprint requirements.

Q: What compliance certifications apply to these parts?

A: All three parts (2SD1815S-TL-E, 2SD1815T-TL-E, and MJD31C-13) are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1) ratings. All parts are REACH unaffected and classified under ECCN EAR99.

Q: Why does the MJD31C-13 have higher power dissipation rating?

A: The MJD31C-13 is rated for 1.56 W maximum power dissipation compared to 1 W for the 2SD1815S-TL-E. This higher rating reflects the device's thermal characteristics and does not indicate superior performance for this application. The 2SD1815S-TL-E remains the preferred selection for applications requiring the specified 1 W power handling.

Q: What is the difference between the TP-FA and TO-252 package designations?

A: TP-FA is the onsemi supplier device package designation for the 2SD1815S-TL-E and 2SD1815T-TL-E. TO-252 (DPAK) is the industry standard package designation used by Diodes Incorporated for the MJD31C-13. Both designations refer to the same physical package: TO-252-3 with 2 leads plus tab (SC-63). The different naming conventions reflect manufacturer-specific nomenclature for identical package geometry.