SM1615C/TR13 Equivalent & Substitute Parts

Part Overview

The SM1615C/TR13 is an 8-channel bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology. This surface-mount component operates with a 15V reverse standoff voltage and provides 30V clamping at peak pulse current, delivering 300W peak pulse power in a 16-SOIC package. The device is classified as Active product status and is suitable for general-purpose transient protection applications. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support alternative sourcing strategies while maintaining electrical and mechanical compatibility within specified parameter ranges.

Substiute Parts

SM1615C/TR13

Microchip TechnologyIn Stock: 2252SM1615C/TR13 Datasheet

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LCDA15C-8.TBT

SemtechIn Stock: 5367LCDA15C-8.TBT Datasheet

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S16C15-8

SMC Diode SolutionsIn Stock: 3148S16C15-8 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SM1615C/TR13 are qualified based on the following critical parameters that determine functional equivalence:

Primary Compatibility Criteria:

• Bidirectional channel count: 8 channels (required for pin-to-pin compatibility)
• Reverse standoff voltage: 15V nominal (allows operation in same voltage protection window)
• Breakdown voltage minimum: 16.7V (ensures consistent trigger threshold)
• Package type: 16-SOIC surface mount (mechanical and electrical footprint compatibility)
• Mounting configuration: Surface mount on tape and reel (assembly process compatibility)

Secondary Performance Parameters:

• Voltage clamping range: 24V to 33V (acceptable variation for transient suppression)
• Peak pulse current: 1A to 15A (determines surge handling capability)
• Peak pulse power: 300W to 500W (energy dissipation capacity)
• Operating temperature: -55°C minimum to 125°C or 150°C maximum (thermal operating window)
• Capacitance: 8pF to 200pF @ 1MHz (signal integrity impact)

Substitute parts meeting these criteria maintain electrical function and mechanical compatibility while allowing for performance optimization or supply chain alternatives.

Parameter Comparison

Engineering Selection Recommendations

SM1615C/TR13 (Microchip Technology) Primary selection for applications requiring the specified 30V clamping voltage and 5A peak pulse current. Maintains active product status with unlimited moisture sensitivity level. RoHS non-compliant status requires verification against end-product regulatory requirements. Operating temperature range extends to 150°C, supporting high-temperature applications. Capacitance of 200pF at 1MHz is suitable for general-purpose protection circuits.

LCDA15C-8.TBT (Semtech) - Enhanced Performance Substitute Qualified substitute offering superior peak pulse current handling (15A versus 5A) and increased peak pulse power (500W versus 300W). Clamping voltage of 33V provides higher transient suppression margin. ROHS3 compliance supports regulatory requirements for restricted substance management. Reduced capacitance (8pF versus 200pF) minimizes signal integrity impact in high-frequency applications. Operating temperature maximum of 125°C is suitable for standard industrial and commercial environments. Pin-to-pin compatible 16-SOIC package enables direct board-level substitution.

S16C15-8 (SMC Diode Solutions) - Lower Current Substitute Qualified substitute for applications with reduced surge current requirements (1A peak pulse). Clamping voltage of 24V provides tighter transient suppression for sensitive circuits. ROHS3 compliance and automotive-grade qualification support regulated end-use applications. Capacitance matching (200pF) maintains signal integrity characteristics equivalent to the main part. Operating temperature range of -55°C to 125°C covers standard industrial specifications. Suitable for Ethernet and Telecom applications as specified by manufacturer.

Frequently Asked Questions (FAQ)

Q: Can LCDA15C-8.TBT be used as a direct replacement for SM1615C/TR13?

A: Yes. Both devices share identical 8-channel bidirectional configuration, 15V reverse standoff voltage, 16.7V minimum breakdown voltage, and 16-SOIC package footprint. The LCDA15C-8.TBT provides enhanced performance with 15A peak pulse current and 33V clamping voltage. Pin-to-pin compatibility enables direct board-level substitution without circuit redesign.

Q: What is the primary difference between S16C15-8 and SM1615C/TR13?

A: The S16C15-8 is rated for 1A peak pulse current compared to 5A for the SM1615C/TR13, resulting in lower peak pulse power (300W). Clamping voltage is 24V versus 30V. Both maintain identical reverse standoff voltage (15V), breakdown voltage (16.7V), and 16-SOIC package configuration. Selection depends on application surge current requirements.

Q: Are all three parts pin-to-pin compatible?

A: Yes. All three parts feature 8-channel bidirectional Zener TVS diodes in 16-SOIC (0.154", 3.90mm width) surface-mount packages. Pin assignments and electrical interface are identical, enabling direct substitution at the board level without layout modifications.

Q: How does capacitance affect substitution suitability?

A: Capacitance at 1MHz ranges from 8pF (LCDA15C-8.TBT) to 200pF (SM1615C/TR13 and S16C15-8). Lower capacitance reduces signal integrity impact in high-frequency circuits. Selection depends on circuit bandwidth requirements. For general-purpose protection, both values are acceptable.

Q: What is the significance of RoHS compliance status?

A: SM1615C/TR13 is RoHS non-compliant, while LCDA15C-8.TBT and S16C15-8 are ROHS3 compliant. RoHS compliance is required for products sold into regulated markets and end-use applications subject to restricted substance directives. Compliance status must align with end-product regulatory requirements.

Q: Do operating temperature ranges affect substitution decisions?

A: SM1615C/TR13 operates to 150°C junction temperature, while LCDA15C-8.TBT and S16C15-8 operate to 125°C. For applications requiring operation above 125°C, SM1615C/TR13 is the only qualified option. For standard industrial and commercial environments (-55°C to 125°C), all three parts are suitable.

Q: Can S16C15-8 handle the same surge currents as SM1615C/TR13?

A: No. S16C15-8 is rated for 1A peak pulse current versus 5A for SM1615C/TR13. Applications requiring 5A or higher surge current handling must use SM1615C/TR13 or LCDA15C-8.TBT (15A rating).

Q: What packaging format is used for all substitute parts?

A: All three parts are supplied in Tape & Reel (TR) format, 16-SOIC surface-mount packages with 0.154" (3.90mm) width. Packaging format is identical across all substitutes, supporting automated assembly processes without equipment reconfiguration.