Equivalent & Substitute Parts for SMBJ170E3/TR13

Part Overview

The SMBJ170E3/TR13 is an active-status transient voltage suppressor (TVS) diode manufactured by Microchip Technology, classified as a unidirectional zener-type surface mount component in the DO-214AA (SMB) package. This component is designed for general purpose transient voltage suppression in electronic circuits. Identification of equivalent and substitute parts becomes necessary when the primary manufacturer component experiences supply constraints, inventory limitations, or design requirements necessitate alternative sourcing from qualified manufacturers with comparable electrical and mechanical specifications.

Substiute Parts

SMBJ170E3/TR13

Microchip TechnologyIn Stock: 1225SMBJ170E3/TR13 Datasheet

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SMBJ170A

Fairchild SemiconductorIn Stock: 17321SMBJ170A Datasheet

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SMBJ170A

Fairchild SemiconductorIn Stock: 17321SMBJ170A Datasheet

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SMBJ170A

Fairchild SemiconductorIn Stock: 17321SMBJ170A Datasheet

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SMBJ170A-13-F

Diodes IncorporatedIn Stock: 10224SMBJ170A-13-F Datasheet

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SMBJ170A-TR

STMicroelectronicsIn Stock: 5238SMBJ170A-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ170E3/TR13 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Voltage - Reverse Standoff (Typ): 170V
• Voltage - Breakdown (Min): 189V
• Package / Case: DO-214AA, SMB (surface mount, identical form factor)
• Unidirectional Channels: 1
• Type: Zener
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Allowable Parameter Variation:

• Voltage - Clamping (Max) @ Ipp: 275V–304V (substitute parts with 275V clamping remain compatible for general purpose applications within the specified standoff and breakdown voltage window)
• Current - Peak Pulse (10/1000µs): 2A–2.2A (substitute parts with 2.2A peak pulse current exceed the original specification and remain qualified)
• Operating Temperature Range: -55°C ~ 150°C (substitute parts with a minimum operating temperature of -55°C instead of -65°C accept reduced cold temperature capability)

All identified substitute parts conform to these parameters. The primary difference between the SMBJ170E3/TR13 and its substitutes lies in the Voltage - Clamping specification (304V for the original vs. 275V for substitutes) and operating temperature floor (-65°C vs. -55°C), with substitutes offering equal or superior peak pulse current handling.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and are manufactured by established component suppliers. The SMBJ170A-13-F (Diodes Incorporated) and SMBJ170A-TR (STMicroelectronics) carry explicit ROHS3 Compliant certification, matching the compliance profile of the original SMBJ170E3/TR13. The SMBJ170A (Fairchild Semiconductor) does not provide explicit RoHS status in the supplied data; confirmation of compliance through manufacturer documentation is required prior to deployment in RoHS-restricted applications.

Selection among substitute parts should be based on availability, packaging format (Tape & Reel, Cut Tape, or loose inventory), and organizational supplier qualification status. All substitute parts are electrically and mechanically compatible with the SMBJ170E3/TR13 within the specified parameter allowances.

Frequently Asked Questions (FAQ)

Q: Can SMBJ170A substitute parts with 275V clamping replace the SMBJ170E3/TR13 with 304V clamping? A: Yes. The 275V clamping voltage of substitute parts is a lower maximum value, providing enhanced transient suppression margin. Both specifications satisfy the 189V breakdown minimum and 170V standoff requirements, maintaining circuit protection functionality for general purpose applications.

Q: What is the impact of the -55°C minimum operating temperature on substitute parts compared to the -65°C minimum of the original? A: Substitute parts have a reduced cold temperature operational floor. If the design requires operation or storage below -55°C, only the SMBJ170E3/TR13 (Microchip) qualifies. For applications limited to -55°C and above, substitutes are fully compatible.

Q: Are all substitute parts available in Tape & Reel packaging? A: The SMBJ170A-13-F (Diodes Incorporated) and SMBJ170A-TR (STMicroelectronics) are explicitly specified with Tape & Reel or Cut Tape formats. The SMBJ170A (Fairchild Semiconductor) packaging format is not specified in the supplied data; manufacturer documentation consultation is required.

Q: Do substitute parts offer any performance advantages? A: Substitute parts provide higher peak pulse current capability (2.2A vs. 2A) and lower clamping voltage (275V vs. 304V), representing enhanced performance characteristics within the specified parameter window.

Q: Which substitute offers the best compliance profile? A: The SMBJ170A-13-F (Diodes Incorporated) and SMBJ170A-TR (STMicroelectronics) both carry explicit ROHS3 Compliant certification. Both manufacturers are established sources for TVS diode components in the SMB package category.