SMF36A-T13 Equivalent & Substitute Parts

Part Overview

The SMF36A-T13 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component operates with a 36V reverse standoff voltage and provides clamping at 58.1V maximum, with a peak pulse current rating of 3.4A. The part is actively produced and ROHS3 compliant, making it suitable for modern electronic designs requiring transient suppression in the 36V protection class.

Equivalent and substitute parts are identified based on matching electrical performance parameters, mechanical compatibility, and manufacturing certifications. The following alternatives maintain functional equivalence within the specified parameter tolerances.

Substiute Parts

SMF36A-T13

Littelfuse Inc.In Stock: 795SMF36A-T13 Datasheet

Current PartRFQ

SMF36A

MDDIn Stock: 20906SMF36A Datasheet

DirectRFQ

SMF36A-TP

Micro Commercial CoIn Stock: 1127SMF36A-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMF36A-T13 are qualified based on the following electrical and mechanical criteria:

• Voltage - Reverse Standoff: 36V (exact match required)
• Voltage - Breakdown (Min): 40V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 58.1V (exact match required)
• Current - Peak Pulse (10/1000µs): 3.4A nominal (tolerance ±0.04A acceptable)
• Power - Peak Pulse: 200W (exact match required)
• Package / Case: SOD-123F (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Type: Zener, Unidirectional (exact match required)

All identified substitutes maintain these core parameters within acceptable engineering tolerances for direct functional replacement in the same circuit application.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and ROHS3 compliance, confirming ongoing manufacturing support and environmental regulation adherence. Selection between the main part and substitutes should be based on:

• Availability: SMF36A (MDD) offers the highest inventory (20,865 pcs), followed by SMF36A-TP (1,078 pcs) and SMF36A-T13 (772 pcs).
• Temperature Range: SMF36A-TP provides extended operating temperature range (-65°C ~ 175°C) compared to the main part (-55°C ~ 150°C), suitable for applications requiring wider thermal performance.
• Current Rating: SMF36A (MDD) specifies 3.44A peak pulse current, marginally higher than the 3.4A nominal specification, within acceptable tolerance for this component class.
• REACH Compliance: SMF36A-T13 and SMF36A-TP carry explicit REACH Unaffected status; SMF36A (MDD) lists vendor undefined status.

Frequently Asked Questions (FAQ)

Q: Can SMF36A (MDD) be used as a direct replacement for SMF36A-T13?

A: Yes. Both parts share identical voltage ratings (36V standoff, 40V breakdown, 58.1V clamping), power dissipation (200W), and package type (SOD-123F). The 3.44A peak pulse current in the MDD variant is within acceptable tolerance of the 3.4A specification.

Q: What is the difference between SOD-123F and SOD-123FL packaging?

A: Both designations refer to the same surface-mount package footprint and mechanical dimensions. The suffix variation reflects manufacturer nomenclature differences and does not affect PCB layout or assembly compatibility.

Q: Is SMF36A-TP suitable for high-temperature applications?

A: SMF36A-TP operates across -65°C to 175°C, providing a wider temperature range than the main part (-55°C to 150°C). This extended range makes it suitable for applications requiring operation at elevated ambient or junction temperatures.

Q: Are all substitutes ROHS3 compliant?

A: Yes. SMF36A-T13, SMF36A, and SMF36A-TP all carry ROHS3 Compliant certification, confirming compliance with restricted substance directives.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates the lowest moisture sensitivity level, meaning the component can be stored indefinitely without special moisture control measures, simplifying inventory and handling procedures.