Equivalent & Substitute Parts for 1SMB36CAT3

Part Overview

The 1SMB36CAT3 is a Transient Voltage Suppressor (TVS) diode manufactured by onsemi, rated at 36V reverse standoff with 58.1V clamping voltage in SMB packaging. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part operates across a wide temperature range and provides transient voltage protection for general-purpose applications.

Substiute Parts

1SMB36CAT3

onsemiIn Stock: 11901SMB36CAT3 Datasheet

Current PartRFQ

SMBJ36CA

MDDIn Stock: 16947SMBJ36CA Datasheet

DirectRFQ

SMBJ36CA

MDDIn Stock: 16947SMBJ36CA Datasheet

DirectRFQ

SMBJ33CA-TR

STMicroelectronicsIn Stock: 2999SMBJ33CA-TR Datasheet

SimilarRFQ

SMBJ36CA-TP

Micro Commercial CoIn Stock: 1586SMBJ36CA-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 1SMB36CAT3 is determined by the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 36V
• Voltage - Clamping (Max) @ Ipp: 58.1V
• Package / Case: SMB (DO-214AA)
• Mounting Type: Surface Mount
• Power - Peak Pulse: 600W
• Bidirectional Channels: 1

Substitute parts are grouped into two categories:

Direct Substitutes maintain identical electrical specifications (36V standoff, 58.1V clamping) with active product status and improved compliance certifications.

Similar Substitutes provide comparable transient voltage suppression with minor variations in standoff voltage (33V) and clamping voltage (53.3V), suitable for applications with slightly lower voltage requirements.

Parameter Comparison

Engineering Selection Recommendations

SMBJ36CA (MDD) and SMBJ36CA-TP (Micro Commercial Co) are direct electrical equivalents to the 1SMB36CAT3, maintaining identical reverse standoff voltage (36V) and clamping voltage (58.1V). Both parts carry active product status and ROHS3 compliance, addressing the obsolescence and compliance limitations of the original part. Peak pulse current specifications are equivalent (10.4A and 10.3A respectively), ensuring compatible transient suppression performance.

SMBJ33CA-TR (STMicroelectronics) provides a similar substitute with a lower reverse standoff voltage (33V) and clamping voltage (53.3V). This part is suitable for applications where the lower voltage rating is acceptable and where the extended operating temperature range (-55°C ~ 150°C) provides additional thermal margin. The higher peak pulse current (11.8A) offers enhanced transient handling capability.

All substitute parts maintain SMB/DO-214AA packaging compatibility, surface mount mounting type, and identical MSL, REACH, ECCN, and HTSUS classifications as the original part. The transition from RoHS non-compliant to ROHS3 compliant status aligns with current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBJ36CA (MDD) be used as a direct replacement for 1SMB36CAT3?

A: Yes. SMBJ36CA maintains identical electrical specifications (36V reverse standoff, 58.1V clamping voltage, 600W peak pulse power) and SMB packaging. The part is active and ROHS3 compliant, addressing the obsolescence status of the original component.

Q: What is the difference between SMBJ36CA-TP and SMBJ36CA (MDD)?

A: Both parts share identical electrical ratings (36V standoff, 58.1V clamping, 10.3-10.4A peak pulse current). SMBJ36CA-TP is supplied in Tape & Reel packaging and supports an extended operating temperature range (-55°C ~ 175°C) compared to SMBJ36CA (-50°C ~ 150°C). Selection depends on packaging requirements and thermal operating conditions.

Q: When should SMBJ33CA-TR be selected instead of the 36V equivalents?

A: SMBJ33CA-TR is appropriate for applications where the circuit design accommodates a lower reverse standoff voltage (33V) and clamping voltage (53.3V). This part offers a higher peak pulse current (11.8A) and extended temperature range (-55°C ~ 150°C), making it suitable for designs with lower voltage transient requirements and demanding thermal environments.

Q: Are all substitute parts compatible with the original SMB package footprint?

A: Yes. All substitute parts use DO-214AA/SMB packaging with surface mount mounting type, ensuring direct PCB footprint compatibility with the 1SMB36CAT3.

Q: What compliance improvements do the substitute parts provide?

A: The substitute parts transition from RoHS non-compliant status to ROHS3 compliant status, aligning with current environmental and regulatory standards. MSL, REACH, ECCN, and HTSUS classifications remain consistent across all parts.