SMDA15CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMDA15CE3/TR13 is a bidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This 8-SOIC packaged component features a 15V reverse standoff voltage with 24V clamping capability and 5A peak pulse current rating. The part is Active in product status and RoHS3 compliant. Equivalent and substitute parts are identified to support design flexibility, inventory optimization, and supply chain continuity while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

SMDA15CE3/TR13

Microchip TechnologyIn Stock: 982SMDA15CE3/TR13 Datasheet

Current PartRFQ

SMDA15CE3/TR7

Microchip TechnologyIn Stock: 1680SMDA15CE3/TR7 Datasheet

DirectRFQ

CDNBS08-T15C

Bourns Inc.In Stock: 17467CDNBS08-T15C Datasheet

SimilarRFQ

SMDA15C.TBT

Semtech CorporationIn Stock: 65490SMDA15C.TBT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMDA15CE3/TR13 are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalent: Parts that maintain identical electrical specifications and differ only in packaging tape configuration or minor supplier designation. These parts satisfy all critical parameters without performance trade-offs.

Similar Substitute: Parts that share the same reverse standoff voltage (15V) and bidirectional channel configuration (4 channels) but exhibit variations in clamping voltage, peak pulse current, or power dissipation. These parts are functionally compatible for general-purpose overvoltage protection but operate within different performance envelopes.

Key Parameters Determining Substitution:

• Voltage - Reverse Standoff (Typ): 15V (fixed requirement)
• Bidirectional Channels: 4 (fixed requirement)
• Package / Case: 8-SOIC form factor (fixed requirement)
• Mounting Type: Surface Mount (fixed requirement)
• Operating Temperature Range: -55°C minimum and 150°C maximum (fixed requirement)
• RoHS3 Compliance: Required for all substitutes

Parameter Comparison

Engineering Selection Recommendations

SMDA15CE3/TR7 (Direct Equivalent): This part is the primary equivalent for SMDA15CE3/TR13. Both parts are manufactured by Microchip Technology, share identical electrical specifications, and maintain full compatibility across all critical parameters. The difference lies in tape configuration (TR7 versus TR13), which affects reel packaging but does not impact electrical performance or PCB assembly compatibility. Selection of SMDA15CE3/TR7 is appropriate for direct substitution without circuit redesign. Both parts maintain Active product status and ROHS3 compliance.

CDNBS08-T15C (Similar Substitute): This Bourns Inc. TVS diode maintains the same reverse standoff voltage (15V) and bidirectional channel configuration (4 channels) as the main part. However, it exhibits higher clamping voltage (30V typical versus 24V maximum), higher peak pulse current capability (17A versus 5A), and higher power dissipation (500W versus 300W). The CDNBS08-T15C is suitable for applications requiring enhanced transient energy absorption or where higher clamping voltage is acceptable. Operating temperature range remains -55°C to 150°C. Selection requires verification that the higher clamping voltage does not exceed downstream component voltage ratings.

SMDA15C.TBT (Similar Substitute): This Semtech Corporation TVS diode from the SMDAC series maintains the same reverse standoff voltage (15V) and bidirectional channel configuration (4 channels). It provides intermediate peak pulse current capability (10A versus 5A) and clamping voltage of 30V. The operating temperature range is -55°C to 125°C, which is narrower than the main part's -55°C to 150°C range. This part is suitable for general-purpose overvoltage protection in applications where the reduced upper temperature limit is acceptable and higher transient current handling is beneficial.

All substitute parts maintain RoHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status, ensuring regulatory and environmental compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can SMDA15CE3/TR7 be used as a direct replacement for SMDA15CE3/TR13 without circuit modification?

A: Yes. SMDA15CE3/TR7 is a direct equivalent with identical electrical specifications. The difference is packaging tape configuration (reel type), which does not affect electrical performance or PCB assembly. No circuit modification is required.

Q: What is the primary difference between the main part and CDNBS08-T15C?

A: The CDNBS08-T15C has higher clamping voltage (30V typical versus 24V maximum), higher peak pulse current (17A versus 5A), and higher power dissipation (500W versus 300W). Both maintain the same 15V reverse standoff voltage and 4-channel bidirectional configuration. Selection depends on whether the higher clamping voltage is compatible with downstream components.

Q: Is SMDA15C.TBT suitable for high-temperature applications?

A: SMDA15C.TBT has an operating temperature range of -55°C to 125°C, which is 25°C lower than the main part's -55°C to 150°C range. It is not suitable for applications requiring operation above 125°C junction temperature.

Q: Do all substitute parts have the same package footprint?

A: All parts use the 8-SOIC package with 0.154" (3.90mm) width, ensuring identical PCB footprint compatibility. Supplier device package designations (8-SOIC versus 8-SO) refer to tape reel configuration only and do not affect physical dimensions or soldering characteristics.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SMDA15CE3/TR7, CDNBS08-T15C, and SMDA15C.TBT are all ROHS3 compliant with MSL Level 1 (Unlimited) and REACH Unaffected status, matching the regulatory profile of the main part.

Q: Which substitute part should be selected for maximum transient energy absorption?

A: CDNBS08-T15C provides the highest peak pulse current (17A) and power dissipation (500W), making it suitable for applications requiring maximum transient energy absorption. However, its 30V clamping voltage must be verified as compatible with the protected circuit.

Q: Can SMDA15C.TBT and CDNBS08-T15C be used interchangeably?

A: Both parts share the same reverse standoff voltage (15V) and channel configuration (4 channels), but differ in clamping voltage, peak pulse current, and power dissipation. They are not interchangeable without circuit analysis. CDNBS08-T15C provides higher current handling; SMDA15C.TBT provides intermediate performance. Selection depends on specific application requirements.