USB50815C-AE3/TR13 Equivalent & Substitute Parts

Part Overview

The USB50815C-AE3/TR13 is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for transient overvoltage protection in high-speed data applications. This 8-SOIC surface mount component operates with a 15V reverse standoff voltage and 32V maximum clamping voltage, providing 5A peak pulse current capability at 8/20µs pulse width. The device is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity rating. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring compatible TVS diode specifications.

Substiute Parts

USB50815C-AE3/TR13

Microchip TechnologyIn Stock: 904USB50815C-AE3/TR13 Datasheet

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CDNBS08-T15C

Bourns Inc.In Stock: 17467CDNBS08-T15C Datasheet

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SMDA15C.TBT

Semtech CorporationIn Stock: 65490SMDA15C.TBT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the USB50815C-AE3/TR13 are qualified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 15V
• Voltage - Breakdown (Min): 16.7V minimum
• Package / Case: 8-SOIC surface mount form factor
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 150°C or higher
• RoHS3 Compliance and MSL 1 rating

Secondary Compatibility Parameters:

• Bidirectional channel configuration (2 or 4 channels acceptable)
• Voltage - Clamping (Max) @ Ipp: 30V to 32V range
• Current - Peak Pulse (8/20µs): 5A minimum
• Power - Peak Pulse: 300W minimum

The substitute parts CDNBS08-T15C (Bourns Inc.) and SMDA15C.TBT (Semtech Corporation) meet all primary compatibility criteria and operate within acceptable secondary parameter ranges for direct substitution in the USB50815C-AE3/TR13 application circuit.

Parameter Comparison

Engineering Selection Recommendations

CDNBS08-T15C (Bourns Inc.) is qualified as a direct substitute for USB50815C-AE3/TR13. This part maintains identical reverse standoff voltage (15V), breakdown voltage (16.7V minimum), and operating temperature range (-55°C to 150°C). The clamping voltage specification of 30V (Typ) is within acceptable tolerance of the original 32V maximum. The CDNBS08-T15C provides superior peak pulse current capability (17A versus 5A), which represents an enhancement for transient protection margin. Both devices are RoHS3 compliant with MSL 1 rating and 8-SOIC packaging. Product status is Active for both manufacturers.

SMDA15C.TBT (Semtech Corporation) is qualified as a direct substitute for USB50815C-AE3/TR13. This part maintains identical reverse standoff voltage (15V maximum), breakdown voltage (16.7V minimum), and 8-SOIC package form factor. The clamping voltage specification of 30V is within acceptable tolerance. The SMDA15C.TBT provides peak pulse current capability of 10A, which exceeds the original 5A specification. Operating temperature range extends to -55°C to 125°C, which covers the lower end of the original range. Both devices are RoHS3 compliant with MSL 1 rating. Product status is Active for Semtech Corporation.

Selection between substitute parts should be based on application-specific requirements for peak pulse current handling, capacitance characteristics, and maximum operating temperature constraints.

Frequently Asked Questions (FAQ)

Q: Can CDNBS08-T15C replace USB50815C-AE3/TR13 in existing circuit designs?

A: Yes. Both parts share identical reverse standoff voltage (15V), breakdown voltage (16.7V minimum), and 8-SOIC package dimensions. The CDNBS08-T15C clamping voltage of 30V (Typ) is compatible with the original 32V maximum specification. The higher peak pulse current rating (17A) of CDNBS08-T15C provides additional transient protection margin.

Q: What are the key differences between SMDA15C.TBT and USB50815C-AE3/TR13?

A: Both parts maintain compatible voltage specifications (15V reverse standoff, 16.7V breakdown minimum, 30V clamping). The SMDA15C.TBT operates to -55°C to 125°C maximum junction temperature, compared to -55°C to 150°C for the original part. Peak pulse current is 10A versus 5A. Capacitance at 1MHz is 75pF versus 3pF. All other electrical and compliance parameters are equivalent.

Q: Are all substitute parts available in the same packaging format?

A: Yes. USB50815C-AE3/TR13, CDNBS08-T15C, and SMDA15C.TBT are all supplied in 8-SOIC (0.154", 3.90mm Width) surface mount package with Tape & Reel (TR) packaging. PCB footprints and reflow soldering profiles are identical.

Q: Do substitute parts meet the same compliance requirements?

A: Yes. All three parts are RoHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited moisture sensitivity). ECCN and HTSUS classifications are identical across all parts.

Q: What is the significance of bidirectional channel count differences?

A: The USB50815C-AE3/TR13 features 2 bidirectional channels, while CDNBS08-T15C and SMDA15C.TBT feature 4 bidirectional channels. This indicates the substitute parts provide protection on additional signal lines within the same 8-SOIC package. Channel count does not affect substitution compatibility when only 2 channels are required in the application circuit.

Q: How do capacitance differences affect circuit performance?

A: The USB50815C-AE3/TR13 has 3pF capacitance at 1MHz, while substitutes have 75-80pF. Higher capacitance may affect high-frequency signal integrity in sensitive applications. Verify capacitance specifications against circuit requirements before final selection.

Q: Which substitute part should be selected for maximum operating temperature applications?

A: USB50815C-AE3/TR13 and CDNBS08-T15C both support -55°C to 150°C operating range. SMDA15C.TBT is limited to -55°C to 125°C. For applications requiring operation above 125°C junction temperature, select either the original part or CDNBS08-T15C.