SMDB15CE3/TR13 Equivalent & Substitute Parts Reference

Part Overview

The SMDB15CE3/TR13 is a 4-channel bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose transient protection applications. This surface-mount component operates with a 15V reverse standoff voltage and provides 24V clamping at peak pulse current, with a peak pulse rating of 5A (8/20µs). The part is currently Active in product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

SMDB15CE3/TR13

Microchip TechnologyIn Stock: 1078SMDB15CE3/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 SMDB15CE3/TR13 are classified based on electrical parameter compatibility and mechanical interchangeability. The substitution logic is determined by the following critical parameters:

Primary Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 15V
• Voltage - Breakdown (Min): 16.7V minimum
• Bidirectional Channels: 4 channels
• Package / Case: 8-SOIC form factor
• Mounting Type: Surface Mount
• Type: Zener diode

Substitution Categories:

Direct Equivalent: Parts with identical electrical specifications across all key parameters, including clamping voltage (24V), peak pulse current (5A), and power dissipation (300W). These parts are pin-compatible and functionally interchangeable without circuit modification.

Similar Substitute: Parts that maintain the same reverse standoff voltage (15V), breakdown voltage (16.7V), and package form factor, but differ in clamping voltage, peak pulse current, or power dissipation ratings. These parts provide enhanced performance characteristics and are suitable for applications where higher transient protection margins are acceptable.

Parameter Comparison

Engineering Selection Recommendations

SMDA15CE3/TR7 (Direct Equivalent - Microchip Technology)

The SMDA15CE3/TR7 is a direct functional equivalent to the SMDB15CE3/TR13. Both parts are manufactured by Microchip Technology within the TVSarray™ series and share identical electrical specifications: 15V reverse standoff, 16.7V breakdown voltage, 24V clamping voltage, and 5A peak pulse current. The parts are pin-compatible and interchangeable without circuit modification. Both maintain Active product status, ROHS3 compliance, and unlimited moisture sensitivity level. This substitute is suitable for direct replacement in existing designs.

CDNBS08-T15C (Similar Substitute - Bourns Inc.)

The CDNBS08-T15C is a similar substitute manufactured by Bourns Inc. It maintains the same 15V reverse standoff voltage, 16.7V breakdown voltage, and 8-SOIC package form factor. However, this part provides enhanced transient protection with 30V clamping voltage (versus 24V), 17A peak pulse current (versus 5A), and 500W power dissipation (versus 300W). The CDNBS08-T15C is suitable for applications requiring higher transient energy absorption or where design margins for overvoltage protection are prioritized. Operating temperature range remains -55°C to 150°C. This part is Active and ROHS3 compliant.

SMDA15C.TBT (Similar Substitute - Semtech Corporation)

The SMDA15C.TBT is a similar substitute manufactured by Semtech Corporation within the SMDAC series. It maintains the same 15V reverse standoff voltage, 16.7V breakdown voltage, and 8-SOIC package form factor. This part provides 30V clamping voltage and 10A peak pulse current, offering intermediate performance between the main part and the Bourns alternative. The operating temperature range is -55°C to 125°C (5°C lower maximum than the main part). The SMDA15C.TBT is Active and ROHS3 compliant. This substitute is suitable for applications where moderate transient protection enhancement is required.

All substitute parts are Active in product status, RoHS3 compliant, and suitable for general-purpose transient voltage suppression applications. Selection among these options depends on specific transient energy requirements and available inventory.

Frequently Asked Questions (FAQ)

Q1: Can SMDA15CE3/TR7 be used as a direct replacement for SMDB15CE3/TR13?

A: Yes. The SMDA15CE3/TR7 is a direct equivalent with identical electrical specifications and package form factor. Both parts are manufactured by Microchip Technology and share the same 15V reverse standoff voltage, 24V clamping voltage, 5A peak pulse current, and 8-SOIC package. No circuit modification is required.

Q2: What is the difference between the main part and the Bourns CDNBS08-T15C substitute?

A: The CDNBS08-T15C differs in transient protection capability. While both maintain 15V reverse standoff voltage and 8-SOIC packaging, the Bourns part provides 30V clamping voltage (versus 24V), 17A peak pulse current (versus 5A), and 500W power dissipation (versus 300W). The CDNBS08-T15C is suitable for applications requiring higher transient energy absorption.

Q3: Are all substitute parts pin-compatible with the SMDB15CE3/TR13?

A: Yes. All substitute parts listed maintain the 8-SOIC (0.154", 3.90mm Width) package form factor and surface-mount configuration. Pin compatibility is maintained across all alternatives.

Q4: What is the operating temperature difference between the main part and SMDA15C.TBT?

A: The main part (SMDB15CE3/TR13) operates from -55°C to 150°C (TJ), while the SMDA15C.TBT operates from -55°C to 125°C (TJ). The SMDA15C.TBT has a 25°C lower maximum junction temperature rating.

Q5: Which substitute part provides the highest transient protection?

A: The CDNBS08-T15C from Bourns Inc. provides the highest transient protection with 30V clamping voltage, 17A peak pulse current, and 500W power dissipation, compared to the main part's 24V clamping, 5A current, and 300W dissipation.

Q6: Are all parts RoHS3 compliant?

A: Yes. The main part SMDB15CE3/TR13 and all substitute parts (SMDA15CE3/TR7, CDNBS08-T15C, and SMDA15C.TBT) are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Q7: What is the key parameter that determines substitutability?

A: The primary substitution criteria are: 15V reverse standoff voltage, 16.7V minimum breakdown voltage, 4 bidirectional channels, and 8-SOIC surface-mount package form factor. Parts meeting these criteria are considered compatible substitutes.

Q8: Can the Semtech SMDA15C.TBT be used in place of the main part?

A: Yes. The SMDA15C.TBT maintains the same reverse standoff voltage (15V), breakdown voltage (16.7V), and package form factor. It provides enhanced clamping voltage (30V) and peak pulse current (10A). The lower maximum operating temperature (125°C versus 150°C) should be verified against application requirements.