SM16LC12/TR13 Equivalent & Substitute Parts

Part Overview

The SM16LC12/TR13 is an active Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This unidirectional 8-channel device operates with a 12V reverse standoff voltage and provides 24V clamping at peak pulse current, delivering 500W peak pulse power in a 16-SOIC surface mount package. The part is currently in active production status with 989 units available in inventory. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements where alternative electrical or compliance characteristics are acceptable.

Substiute Parts

SM16LC12/TR13

Microchip TechnologyIn Stock: 1090SM16LC12/TR13 Datasheet

Current PartRFQ

S16LC12-8

SMC Diode SolutionsIn Stock: 3584S16LC12-8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SM16LC12/TR13 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Unidirectional channel count: 8 channels
• Package type: 16-SOIC surface mount
• Voltage - Reverse Standoff (Typ): 12V
• Voltage - Breakdown (Min): 13.3V
• Capacitance @ 1MHz: 25pF

Allowable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: Substitute parts may operate at lower clamping voltages (19V acceptable versus 24V nominal)
• Current - Peak Pulse: Substitute parts may have reduced peak pulse current ratings (1A acceptable versus 5A nominal)
• Power - Peak Pulse: Substitute parts may have reduced power dissipation (300W acceptable versus 500W nominal)
• Operating Temperature Range: Substitute parts may have narrower temperature ranges (-55°C to 125°C acceptable versus -55°C to 150°C nominal)
• RoHS and REACH compliance: Substitute parts may have different compliance status

The S16LC12-8 from SMC Diode Solutions meets all mandatory matching criteria and is classified as an acceptable substitute despite lower clamping voltage, peak pulse current, and power ratings.

Parameter Comparison

Engineering Selection Recommendations

SM16LC12/TR13 (Microchip Technology) is the primary component selection for applications requiring:

• Maximum peak pulse current capacity of 5A
• Maximum power dissipation of 500W
• Extended operating temperature range to 150°C
• RoHS non-compliant design where legacy compliance is not required

S16LC12-8 (SMC Diode Solutions) is an acceptable substitute for applications where:

• Peak pulse current requirements do not exceed 1A
• Power dissipation requirements do not exceed 300W
• Operating temperature range of -55°C to 125°C is sufficient
• ROHS3 compliance and REACH affected status are required or preferred
• Automotive-grade reliability is specified
• Ethernet and Telecom application environments are present

Both parts share identical package geometry, channel configuration, and core voltage protection parameters. Selection between these parts should be based on the specific application's current handling requirements, thermal environment, and regulatory compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can the S16LC12-8 directly replace the SM16LC12/TR13 in all applications?

A: The S16LC12-8 is a functional substitute only for applications where peak pulse current does not exceed 1A and power dissipation remains below 300W. Applications requiring the full 5A peak pulse current or 500W power handling of the SM16LC12/TR13 must use the original part or equivalent with matching current and power ratings.

Q: What is the significance of the different clamping voltages (24V vs. 19V)?

A: The SM16LC12/TR13 clamps transient voltages at a maximum of 24V, while the S16LC12-8 clamps at 19V. For circuits requiring protection at voltages below 19V, the S16LC12-8 provides adequate clamping. For circuits requiring clamping between 19V and 24V, the SM16LC12/TR13 is the appropriate selection.

Q: Are both parts pin-compatible?

A: Yes. Both the SM16LC12/TR13 and S16LC12-8 use the 16-SOIC package with identical 0.154-inch width and 3.90mm dimensions. Pin-to-pin compatibility is confirmed for direct PCB layout substitution.

Q: What is the impact of the operating temperature range difference?

A: The SM16LC12/TR13 operates to 150°C junction temperature, while the S16LC12-8 operates to 125°C. Applications in high-temperature environments (above 125°C) require the SM16LC12/TR13. Standard industrial and commercial applications typically operate within the 125°C range of the S16LC12-8.

Q: How do the RoHS compliance statuses affect part selection?

A: The SM16LC12/TR13 is RoHS non-compliant, while the S16LC12-8 is ROHS3 compliant. Applications subject to RoHS regulations or customer requirements for RoHS compliance must use the S16LC12-8. Legacy systems without RoHS mandates may use either part.

Q: Are there inventory or lead-time considerations between these parts?

A: The SM16LC12/TR13 has 989 units in stock, while the S16LC12-8 has 3540 units available. The S16LC12-8 offers greater inventory availability for high-volume procurement.