SM16LC15C/TR13 Equivalent & Substitute Parts

Part Overview

The SM16LC15C/TR13 is an active Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology. This surface-mount component provides bidirectional overvoltage protection with 8 channels in a 16-SOIC package. The device operates across a temperature range of -55°C to 150°C and is designed for general-purpose transient suppression applications. Finding equivalent and substitute parts is necessary to address inventory availability, lead time constraints, or specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

SM16LC15C/TR13

Microchip TechnologyIn Stock: 1035SM16LC15C/TR13 Datasheet

Current PartRFQ

SM1615C/TR13

Microchip TechnologyIn Stock: 2252SM1615C/TR13 Datasheet

DirectRFQ

ITA18B1RL

STMicroelectronicsIn Stock: 2433ITA18B1RL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SM16LC15C/TR13 are classified based on electrical parameter compatibility and mechanical form factor. The primary substitution criteria are:

Critical Parameters for Substitution:

• Voltage - Reverse Standoff (Typ): 15V
• Voltage - Clamping (Max) @ Ipp: 30V maximum
• Current - Peak Pulse (8/20µs): 5A minimum
• Power - Peak Pulse: 300W
• Bidirectional Channels: 8 channels
• Package / Case: 16-SOIC form factor
• Mounting Type: Surface Mount

Direct Substitutes maintain all critical electrical parameters and identical package configuration, enabling pin-for-pin replacement without circuit modification.

Similar Substitutes maintain core voltage and power specifications but may differ in channel count, package size, or peak current rating. These parts require circuit-level evaluation to confirm compatibility with the application's specific requirements.

Parameter Comparison

Engineering Selection Recommendations

SM1615C/TR13 (Direct Substitute)

The SM1615C/TR13 is a direct substitute for the SM16LC15C/TR13. Both parts are manufactured by Microchip Technology and share identical electrical specifications: 15V reverse standoff voltage, 30V clamping voltage, 5A peak pulse current, and 8 bidirectional channels in a 16-SOIC package. The SM1615C/TR13 maintains the same operating temperature range (-55°C to 150°C) and MSL rating. The primary difference is capacitance at 1MHz (200pF versus 25pF), which does not affect substitution eligibility for general-purpose transient suppression applications. Both parts carry RoHS non-compliant status. The SM1615C/TR13 offers higher inventory availability (2155 units in stock versus 940 units).

ITA18B1RL (Similar Substitute)

The ITA18B1RL is a similar substitute manufactured by STMicroelectronics. This part maintains the 15V reverse standoff voltage and 300W peak pulse power rating. However, it differs in several parameters: voltage breakdown minimum is 18V (versus 16.7V), clamping voltage is 28V (versus 30V), peak pulse current is 25A (versus 5A), and bidirectional channels are 5 (versus 8). The package is 8-SOIC rather than 16-SOIC. The ITA18B1RL is ROHS3 compliant, whereas the main part is RoHS non-compliant. This part is suitable only for applications where the higher peak pulse current capability and lower channel count are acceptable. Circuit-level verification is required before selection.

Frequently Asked Questions (FAQ)

Q: Can SM1615C/TR13 be used as a direct replacement for SM16LC15C/TR13?

A: Yes. The SM1615C/TR13 is a direct substitute. Both parts share identical electrical specifications for reverse standoff voltage (15V), clamping voltage (30V), peak pulse current (5A), bidirectional channels (8), and package configuration (16-SOIC). The capacitance difference (200pF versus 25pF at 1MHz) does not prevent substitution in general-purpose applications.

Q: What are the key differences between SM16LC15C/TR13 and ITA18B1RL?

A: The ITA18B1RL differs in multiple parameters: breakdown voltage minimum (18V versus 16.7V), clamping voltage (28V versus 30V), peak pulse current (25A versus 5A), bidirectional channels (5 versus 8), and package type (8-SOIC versus 16-SOIC). The ITA18B1RL is ROHS3 compliant while the main part is RoHS non-compliant. These differences require application-specific evaluation before substitution.

Q: Is the ITA18B1RL suitable for all applications using SM16LC15C/TR13?

A: No. The ITA18B1RL is a similar substitute, not a direct replacement. The reduced channel count (5 versus 8) and different package configuration (8-SOIC versus 16-SOIC) make it incompatible with designs requiring 8 channels in a 16-SOIC footprint. The higher peak pulse current (25A) may be beneficial for high-energy transient environments but requires circuit verification.

Q: What is the impact of capacitance differences between SM16LC15C/TR13 and SM1615C/TR13?

A: The SM1615C/TR13 has higher capacitance at 1MHz (200pF versus 25pF). In general-purpose transient suppression applications, this difference does not affect substitution eligibility. However, in high-frequency circuits or applications with strict capacitance requirements, the capacitance specification should be verified against circuit design parameters.

Q: Are there RoHS compliance considerations when selecting a substitute?

A: Yes. The SM16LC15C/TR13 and SM1615C/TR13 are both RoHS non-compliant. The ITA18B1RL is ROHS3 compliant. If the application or end-use market requires RoHS compliance, the ITA18B1RL is the only option among these substitutes, provided all electrical and mechanical parameters are acceptable for the circuit design.

Q: Can SM16LC15C/TR13 be replaced in a 16-SOIC footprint with ITA18B1RL in an 8-SOIC package?

A: No. The ITA18B1RL uses an 8-SOIC package, which is physically and electrically incompatible with a 16-SOIC footprint. PCB layout modifications and circuit redesign would be required. Direct package-compatible substitutes are SM1615C/TR13 (16-SOIC) or other 16-SOIC TVS diodes with matching electrical specifications.

Q: What inventory considerations apply to these substitutes?

A: SM16LC15C/TR13 has 940 units in stock, SM1615C/TR13 has 2155 units in stock, and ITA18B1RL has 2420 units in stock. For applications requiring immediate availability, SM1615C/TR13 or ITA18B1RL offer higher inventory levels. SM1615C/TR13 is preferred if direct substitution is required.