SM1612/TR13 Equivalent & Substitute Parts

Part Overview

The SM1612/TR13 is an active Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This unidirectional 8-channel surface-mount device operates across a temperature range of -55°C to 150°C and is currently in active production status with 954 units available in inventory.

TVS diodes are essential components in electronic circuits requiring protection against transient voltage spikes and electrostatic discharge events. Identifying equivalent and substitute parts becomes necessary when addressing supply chain constraints, design optimization requirements, or application-specific performance needs while maintaining functional compatibility within the circuit design parameters.

Substiute Parts

SM1612/TR13

Microchip TechnologyIn Stock: 1023SM1612/TR13 Datasheet

Current PartRFQ

S1612-8

SMC Diode SolutionsIn Stock: 1140S1612-8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the SM1612/TR13 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Unidirectional channel configuration (8 channels required)
• Reverse standoff voltage matching (12V nominal)
• Breakdown voltage minimum threshold (13.3V or higher)
• Package and pinout compatibility (16-SOIC form factor)
• Surface-mount technology compatibility

Mechanical Compatibility Criteria:

• Identical package type: 16-SOIC (0.154", 3.90mm Width)
• Tape & Reel packaging format
• Pin configuration alignment

The substitute part S1612-8 from SMC Diode Solutions meets the core electrical and mechanical requirements for substitution. Both devices share identical reverse standoff voltage (12V), breakdown voltage minimum (13.3V), package configuration (16-SOIC), channel count (8), and mounting methodology (surface mount). The substitute maintains functional compatibility within the specified parameter envelope while offering alternative sourcing and compliance options.

Parameter Comparison

Engineering Selection Recommendations

SM1612/TR13 (Microchip Technology): The primary part maintains active production status with established inventory availability. This device is suitable for applications requiring the specified 5A peak pulse current capability and 24V clamping voltage. The extended operating temperature range (-55°C to 150°C) accommodates high-temperature environments. However, this part carries RoHS non-compliant status, which may present constraints in regulated markets or applications with strict environmental compliance requirements.

S1612-8 (SMC Diode Solutions): This substitute part is ROHS3 compliant and REACH affected, making it suitable for applications subject to environmental and regulatory compliance mandates. The device maintains identical electrical fundamentals (12V standoff, 13.3V breakdown minimum, 8-channel configuration) and package compatibility. The reduced peak pulse current specification (1A versus 5A) and lower clamping voltage (19V versus 24V) indicate this substitute is appropriate for lower-energy transient protection scenarios. The operating temperature range extends to 125°C, which is adequate for most standard industrial and commercial applications but does not reach the extended high-temperature capability of the primary part.

Selection between these parts depends on compliance requirements, thermal operating conditions, and transient energy levels within the target application circuit.

Frequently Asked Questions (FAQ)

Q: Can the S1612-8 directly replace the SM1612/TR13 in all applications?

A: Direct replacement compatibility depends on application-specific transient energy requirements. Both parts share identical package configuration (16-SOIC), channel count (8), reverse standoff voltage (12V), and breakdown voltage minimum (13.3V). However, the S1612-8 exhibits lower peak pulse current capability (1A versus 5A) and lower clamping voltage (19V versus 24V). Applications requiring the full 5A pulse handling or 24V clamping performance must retain the SM1612/TR13. Applications with lower transient energy levels can utilize the S1612-8.

Q: What are the key electrical differences between these parts?

A: The primary electrical differences are peak pulse current rating (SM1612/TR13: 5A; S1612-8: 1A) and maximum clamping voltage (SM1612/TR13: 24V; S1612-8: 19V). Both devices maintain identical reverse standoff voltage (12V) and breakdown voltage minimum (13.3V). Capacitance values differ (SM1612/TR13: 440pF @ 1MHz; S1612-8: 185pF @ 1MHz), which may affect high-frequency circuit behavior.

Q: Are the packages physically identical?

A: Yes. Both the SM1612/TR13 and S1612-8 utilize the 16-SOIC package format with 0.154-inch (3.90mm) width. Pin configuration and footprint are identical, enabling direct PCB layout compatibility without redesign.

Q: What compliance differences exist between these parts?

A: The SM1612/TR13 is RoHS non-compliant, while the S1612-8 is ROHS3 compliant. The S1612-8 is REACH affected, whereas the SM1612/TR13 is REACH unaffected. Applications requiring RoHS or REACH compliance must utilize the S1612-8.

Q: How do operating temperature ranges compare?

A: The SM1612/TR13 operates across -55°C to 150°C (TJ), providing extended high-temperature capability. The S1612-8 operates across -55°C to 125°C (TJ). Applications requiring operation above 125°C junction temperature must use the SM1612/TR13.

Q: What is the significance of the different capacitance values?

A: The SM1612/TR13 exhibits 440pF capacitance at 1MHz, while the S1612-8 exhibits 185pF. Higher capacitance can affect high-frequency signal integrity and may introduce additional loading on sensitive circuits. Applications with stringent high-frequency performance requirements should evaluate capacitance impact during substitution analysis.