SMBJ170CA-TP Equivalent & Substitute Parts

Part Overview

The SMBJ170CA-TP is a transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. This component operates with a 170V reverse standoff voltage and 275V maximum clamping voltage, delivering 2.2A peak pulse current in a DO-214AA (SMB) package. The part is active in production status and fully compliant with RoHS3 and REACH regulations. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and operational temperature ranges to ensure direct interchangeability in circuit designs.

Substiute Parts

SMBJ170CA-TP

Micro Commercial CoIn Stock: 4071SMBJ170CA-TP Datasheet

Current PartRFQ

SMBJ170CA

MeritekIn Stock: 20308SMBJ170CA Datasheet

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SMBJ170CA

MeritekIn Stock: 20308SMBJ170CA Datasheet

DirectRFQ

SMBJ170CA

MeritekIn Stock: 20308SMBJ170CA Datasheet

DirectRFQ

SMBJ170CA

MeritekIn Stock: 20308SMBJ170CA Datasheet

DirectRFQ

SMBJ170CA-13-F

Diodes IncorporatedIn Stock: 1865SMBJ170CA-13-F Datasheet

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SMBJ170CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 45198SMBJ170CA-E3/52 Datasheet

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SMBJ170CA-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 4378SMBJ170CA-E3/5B Datasheet

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SMBJ170CA-HR

Littelfuse Inc.In Stock: 4244SMBJ170CA-HR Datasheet

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SMBJ170CA-TR

STMicroelectronicsIn Stock: 15383SMBJ170CA-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ170CA-TP are qualified based on the following criteria:

Electrical Parameters (Critical for Substitution):

• Voltage - Reverse Standoff (Typ): 170V
• Voltage - Breakdown (Min): 189V
• Voltage - Clamping (Max) @ Ipp: 275V
• Current - Peak Pulse (10/1000µs): 2.2A or equivalent (2.18A acceptable within tolerance)
• Power - Peak Pulse: 600W

Mechanical & Package Parameters:

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Bidirectional Channels: 1
• Type: Zener

Compliance & Environmental:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Product Status: Active

Substitute parts meeting all electrical specifications and package requirements are classified as direct equivalents. Parts with identical electrical ratings but different operating temperature ranges remain functionally equivalent for most applications, with temperature range differences noted for design consideration.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active production status and full RoHS3 compliance, ensuring regulatory alignment with the original SMBJ170CA-TP. Selection among equivalents should prioritize availability and supply chain stability.

Electrical Equivalence: Parts from Diodes Incorporated (SMBJ170CA-13-F), Vishay (SMBJ170CA-E3/52, SMBJ170CA-E3/5B), Littelfuse (SMBJ170CA-HR), and STMicroelectronics (SMBJ170CA-TR) provide identical 2.2A peak pulse current and 275V clamping voltage specifications, matching the original part exactly.

Temperature Range Consideration: The Meritek SMBJ170CA variant operates at -55°C ~ 150°C, which is 25°C lower than the original part's maximum junction temperature of 175°C. The Littelfuse SMBJ170CA-HR extends the minimum operating temperature to -65°C, providing enhanced low-temperature performance. These differences are relevant only for applications operating at temperature extremes.

Packaging & Mounting: All substitute parts use identical DO-214AA (SMB) surface-mount packages, ensuring PCB footprint compatibility without layout modifications.

Compliance Certifications: All parts maintain MSL 1 (Unlimited) moisture sensitivity rating and REACH compliance status, supporting long-term storage and handling without special environmental controls.

Frequently Asked Questions (FAQ)

Q: Can SMBJ170CA-TP be directly replaced with SMBJ170CA from Meritek?

A: Yes. Both parts share identical voltage ratings (170V standoff, 189V breakdown, 275V clamping) and current specifications (2.2A peak pulse). The Meritek variant operates at -55°C ~ 150°C versus the original's -55°C ~ 175°C. For applications within the -55°C ~ 150°C range, direct substitution is valid.

Q: What is the difference between SMBJ170CA-E3/52 and SMBJ170CA-E3/5B?

A: Both are Vishay TransZorb® series parts with identical electrical specifications (170V standoff, 275V clamping, 2.2A peak pulse). The suffix designates different packaging configurations or tape specifications. Electrical performance and PCB compatibility are equivalent.

Q: Is the SMBJ170CA-HR suitable for low-temperature applications?

A: Yes. The Littelfuse SMBJ170CA-HR extends the minimum operating temperature to -65°C compared to -55°C for most alternatives. This part is specified for applications requiring enhanced cold-temperature performance while maintaining identical voltage and current ratings.

Q: Do all substitute parts use the same DO-214AA package?

A: Yes. All listed equivalents use DO-214AA (SMB) surface-mount packages. PCB footprints and land patterns are identical, requiring no layout modifications for substitution.

Q: Are there any compliance differences between substitute parts?

A: No. All substitute parts maintain RoHS3 compliance, REACH compliance status, and MSL 1 (Unlimited) moisture sensitivity rating. Regulatory and environmental handling requirements are identical across all listed parts.

Q: What is the significance of the 2.18A peak pulse current in the Meritek SMBJ170CA?

A: The Meritek variant specifies 2.18A peak pulse current versus 2.2A for other parts. This 0.02A difference falls within typical manufacturing tolerance bands for TVS diodes and does not affect functional equivalence for general-purpose overvoltage protection applications.