SMF22A-HM3-08 Equivalent & Substitute Parts

Part Overview

The SMF22A-HM3-08 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates within the eSMP® series and is designed for transient overvoltage protection applications. The device features a 22V reverse standoff voltage with a 35.5V maximum clamping voltage and 5.6A peak pulse current capability. The part maintains Active product status and carries AEC-Q101 automotive qualification, making it suitable for demanding industrial and automotive environments. Equivalent and substitute parts are identified based on matching electrical performance parameters and compatible packaging specifications.

Substiute Parts

SMF22A-HM3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 6282SMF22A-HM3-08 Datasheet

Current PartRFQ

SMF22A-TP

Micro Commercial CoIn Stock: 5805SMF22A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMF22A-HM3-08 are identified based on electrical parameter equivalence within the TVS diode category. The primary substitution criteria are:

Electrical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 22V
• Voltage - Breakdown (Min): 24.4V
• Voltage - Clamping (Max) @ Ipp: 35.5V
• Current - Peak Pulse (10/1000µs): 5.6A
• Power - Peak Pulse: 200W
• Type: Zener, Unidirectional (1 channel)

Mechanical Compatibility:

• Mounting Type: Surface Mount
• RoHS3 Compliance
• Moisture Sensitivity Level: 1 (Unlimited)

The SMF22A-TP from Micro Commercial Co meets all electrical performance specifications and maintains equivalent functional characteristics for transient voltage suppression applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SMF22A-HM3-08 and SMF22A-TP maintain Active product status and comply with ROHS3 requirements. The SMF22A-HM3-08 carries AEC-Q101 automotive qualification, which certifies its suitability for automotive applications. The SMF22A-TP does not specify AEC-Q101 qualification in the provided data.

Selection between these parts should be based on application requirements:

• For automotive or AEC-Q101 qualified applications, the SMF22A-HM3-08 is the specified choice.
• For general-purpose transient voltage suppression where automotive qualification is not required, the SMF22A-TP provides electrical equivalence.

Both parts are available in production quantities and maintain unlimited moisture sensitivity classification, indicating robust handling characteristics.

Frequently Asked Questions (FAQ)

Q: Can SMF22A-TP replace SMF22A-HM3-08 in all applications?

A: The SMF22A-TP matches all electrical performance parameters. However, the SMF22A-HM3-08 carries AEC-Q101 automotive qualification while the SMF22A-TP does not. Use SMF22A-TP only in applications where automotive qualification is not a requirement.

Q: What is the difference between DO-219AB and SOD-123FL packages?

A: Both are surface mount packages for TVS diodes. DO-219AB (SMF) and SOD-123FL are different mechanical form factors. Package selection depends on PCB layout constraints and assembly equipment compatibility. Electrical performance remains equivalent.

Q: Are the operating temperature ranges identical?

A: The SMF22A-HM3-08 specifies -65 to 175°C (TJ - junction temperature), while the SMF22A-TP specifies -65 to 175°C (TA - ambient temperature). Both cover the same functional temperature range for typical applications.

Q: What does the base product number SMF22 indicate?

A: The base product number SMF22 identifies the core electrical specification family. Variants within this family (such as SMF22A-HM3-08 and SMF22A-TP) share the same electrical performance but may differ in packaging, manufacturer, or qualification status.

Q: Are both parts RoHS compliant?

A: Yes, both SMF22A-HM3-08 and SMF22A-TP are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements for electronic components.