SM36-TP Equivalent & Substitute Parts

Part Overview

The SM36-TP is an active Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. This unidirectional zener diode operates with a 36V reverse standoff voltage and provides clamping at 80V maximum, making it suitable for protecting sensitive electronic circuits from transient voltage events. The part is RoHS3 compliant and REACH unaffected, with unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, design redundancy, and supply chain continuity.

Substiute Parts

SM36-TP

Micro Commercial CoIn Stock: 6215SM36-TP Datasheet

Current PartRFQ

SM36T1G

onsemiIn Stock: 44144SM36T1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SM36-TP is determined by the following critical parameters:

• Voltage - Reverse Standoff: Must match 36V (Max)
• Voltage - Breakdown (Min): Must match 40V
• Package / Case: Must be compatible with TO-236-3, SC-59, or SOT-23-3
• Mounting Type: Must be Surface Mount
• Unidirectional Channels: Must be 2
• Type: Must be Zener
• RoHS and REACH Compliance: Must maintain ROHS3 and REACH Unaffected status

The SM36T1G, manufactured by onsemi, meets these substitution criteria. While the clamping voltage (60V vs. 80V) and peak pulse current (4A vs. 3A) differ, these parameters remain within the allowable range for general-purpose TVS applications with the same standoff and breakdown voltages. Both parts share identical package specifications and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the SM36-TP and SM36T1G are active products with full RoHS3 compliance and REACH unaffected status, ensuring regulatory compliance for current and future applications. The SM36T1G offers an extended operating temperature range (-55°C to 150°C versus -55°C to 125°C) and higher peak pulse power rating (300W versus 240W), providing additional thermal margin in demanding environments. Package compatibility is identical for both parts in TO-236-3, SC-59, and SOT-23-3 configurations, enabling direct PCB-level substitution without layout modifications. Selection between these parts should be based on specific application thermal requirements and available inventory.

Frequently Asked Questions (FAQ)

Q: Can SM36T1G replace SM36-TP in existing designs?

A: Yes. Both parts share identical reverse standoff voltage (36V), breakdown voltage (40V), package specifications (TO-236-3, SC-59, SOT-23-3), and compliance certifications. The SM36T1G provides improved performance with lower clamping voltage (60V vs. 80V) and higher current handling (4A vs. 3A).

Q: What are the key differences between these parts?

A: The SM36T1G features a lower clamping voltage (60V maximum versus 80V), higher peak pulse current rating (4A versus 3A), higher peak pulse power (300W versus 240W), and an extended operating temperature range (150°C maximum versus 125°C). These differences represent performance enhancements rather than functional incompatibilities.

Q: Are package dimensions identical?

A: Yes. Both parts use the same package family: TO-236-3, SC-59, and SOT-23-3. PCB footprints are identical, allowing direct substitution without layout changes.

Q: Do both parts meet current compliance requirements?

A: Yes. Both SM36-TP and SM36T1G are RoHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component manufacturing and use.

Q: Which part should be selected for high-temperature applications?

A: The SM36T1G is recommended for applications requiring operation above 125°C, as it supports continuous junction temperatures up to 150°C compared to the SM36-TP maximum of 125°C.