2SD1815S-H Equivalent & Substitute Parts

Part Overview

The 2SD1815S-H is an NPN bipolar junction transistor manufactured by onsemi, rated for 100V collector-emitter breakdown voltage and 3A maximum collector current. This device is packaged in a Through Hole TO-251-3 configuration and is currently classified as obsolete. Due to its obsolete status, equivalent and substitute parts are necessary for ongoing design support, maintenance, and production continuity. Substitute parts maintain electrical compatibility while offering alternative packaging options or active product status.

Substiute Parts

2SD1815S-H

onsemiIn Stock: 7552SD1815S-H Datasheet

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2SD1815S-TL-E

onsemiIn Stock: 38752SD1815S-TL-E Datasheet

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2SD1816S-H

onsemiIn Stock: 8902SD1816S-H Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SD1815S-H is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Transistor Type: NPN
• Voltage - Collector Emitter Breakdown (Max): 100V minimum
• Current - Collector (Ic) (Max): 3A or greater
• Power - Max: 1W or greater
• Frequency - Transition: 180MHz or greater
• Operating Temperature: 150°C or greater
• Vce Saturation characteristics compatible with application requirements
• DC Current Gain (hFE): Minimum 70 at specified conditions

Packaging Considerations: Substitutes may differ in mounting type (Through Hole versus Surface Mount) and package configuration. Through Hole and Surface Mount variants of the same base product number maintain electrical equivalence while accommodating different assembly methods.

Parameter Comparison

Engineering Selection Recommendations

2SD1815S-TL-E Selection: The 2SD1815S-TL-E is an active product variant of the 2SD1815 base product number. It maintains identical electrical specifications for voltage, current, power, and frequency performance. This substitute is suitable for applications where Surface Mount assembly is compatible with design requirements. The DC Current Gain (hFE) minimum of 70 at specified conditions is lower than the main part (140), which must be evaluated against circuit design margins. This part carries RoHS3 compliance certification, providing regulatory advantage for new designs.

2SD1816S-H Selection: The 2SD1816S-H is a higher current variant rated for 4A maximum collector current compared to the 3A rating of the 2SD1815S-H. This part maintains Through Hole packaging identical to the main part, enabling direct mechanical substitution. The 2SD1816S-H is classified as obsolete, matching the status of the main part. This substitute is applicable for applications requiring increased current capacity within the same voltage and power envelope. RoHS3 compliance is provided.

Product Status Consideration: The 2SD1815S-TL-E is the only active product among the substitutes listed. For new designs and long-term production continuity, this part is preferred despite the Surface Mount packaging requirement.

Frequently Asked Questions (FAQ)

Q: Can the 2SD1815S-TL-E directly replace the 2SD1815S-H in existing Through Hole designs?

A: The 2SD1815S-TL-E uses Surface Mount packaging (TO-252-3, DPAK) while the 2SD1815S-H uses Through Hole packaging (TO-251-3). Direct mechanical substitution on existing printed circuit boards is not possible without redesign of the PCB layout and assembly process.

Q: What is the significance of the DC Current Gain (hFE) difference between 2SD1815S-H (140) and 2SD1815S-TL-E (70)?

A: The DC Current Gain minimum specification differs between these parts. The 2SD1815S-H guarantees a minimum hFE of 140 at 500mA collector current and 5V collector-emitter voltage, while the 2SD1815S-TL-E guarantees a minimum of 70 at the same conditions. Circuit designs must account for this parameter variation in bias network calculations and gain margin analysis.

Q: Is the 2SD1816S-H suitable as a substitute for the 2SD1815S-H?

A: The 2SD1816S-H is electrically compatible for applications where the 3A collector current rating of the 2SD1815S-H is insufficient. The 2SD1816S-H provides 4A maximum collector current within the same voltage, power, and frequency specifications. Both parts use identical Through Hole packaging. However, the 2SD1816S-H is also classified as obsolete.

Q: What compliance certifications apply to these substitute parts?

A: The 2SD1815S-TL-E carries RoHS3 compliance certification. All listed parts maintain REACH Unaffected status and carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling.

Q: Are there electrical performance differences in saturation voltage between the main part and substitutes?

A: The 2SD1815S-H and 2SD1815S-TL-E share identical Vce Saturation specifications of 400mV maximum at 150mA base current and 1.5A collector current. The 2SD1816S-H specifies 400mV maximum at higher conditions (200mA base current, 2A collector current), reflecting its higher current rating.