1KSMB62C Equivalent & Substitute Parts

Part Overview

The 1KSMB62C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for telecom applications. This surface mount component features a 53V reverse standoff voltage with an 85V maximum clamping voltage and 11.8A peak pulse current capability in a DO-214AA (SMB) package. The 1KSMB62C is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure component availability for new production and field replacements.

Substiute Parts

1KSMB62C

Littelfuse Inc.In Stock: 7871KSMB62C Datasheet

Current PartRFQ

1KSMB62CA

Taiwan Semiconductor CorporationIn Stock: 94081KSMB62CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1KSMB62C is determined by electrical and mechanical parameter equivalence across the following criteria:

Electrical Parameters (Critical for Substitution):

• Voltage - Reverse Standoff (Typ): 53V
• Voltage - Breakdown (Min): 58.9V
• Voltage - Clamping (Max) @ Ipp: 85V
• Current - Peak Pulse (10/1000µs): 11.8A
• Power - Peak Pulse: 1000W

Mechanical Parameters (Critical for Substitution):

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

The 1KSMB62CA meets all electrical and mechanical substitution criteria, maintaining identical voltage ratings, peak pulse current, and power dissipation specifications while utilizing the same DO-214AA surface mount package configuration.

Parameter Comparison

Engineering Selection Recommendations

The 1KSMB62CA manufactured by Taiwan Semiconductor Corporation is a direct electrical and mechanical equivalent to the obsolete 1KSMB62C. Selection of the 1KSMB62CA is supported by the following factors:

Product Status: The 1KSMB62CA maintains active product status, ensuring ongoing availability and supply chain continuity compared to the obsolete 1KSMB62C.

Electrical Equivalence: All critical electrical parameters are identical, including reverse standoff voltage (53V), breakdown voltage (58.9V minimum), clamping voltage (85V maximum), peak pulse current (11.8A), and peak pulse power (1000W).

Mechanical Compatibility: Both components utilize the DO-214AA (SMB) surface mount package, enabling direct PCB footprint compatibility without layout modifications.

Compliance: The 1KSMB62CA is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The original 1KSMB62C is RoHS compliant, confirming environmental standard alignment.

Operating Temperature Range: The 1KSMB62CA operating range (-55°C ~ 175°C) encompasses the original component range (-65°C ~ 150°C), providing equivalent or superior thermal performance for specified applications.

Frequently Asked Questions (FAQ)

Q: Can the 1KSMB62CA be used as a direct replacement for the 1KSMB62C in existing designs?

A: Yes. The 1KSMB62CA is electrically and mechanically equivalent. All voltage ratings, current specifications, and package dimensions are identical, enabling direct substitution without circuit redesign or PCB layout modification.

Q: Are there differences in the operating temperature ranges between these components?

A: The 1KSMB62CA operates across -55°C to 175°C, while the 1KSMB62C operates across -65°C to 150°C. The substitute part provides a wider upper temperature limit. For applications requiring the full -65°C lower limit, verify that the -55°C minimum of the 1KSMB62CA meets system requirements.

Q: What is the significance of the packaging difference (Tape & Reel vs. standard packaging)?

A: The 1KSMB62CA is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly. The original 1KSMB62C packaging format is not specified in the provided data. Both formats contain identical components; the difference relates to supply and handling methodology for manufacturing processes.

Q: Are both components RoHS compliant?

A: Yes. The 1KSMB62C is RoHS compliant, and the 1KSMB62CA is ROHS3 compliant, confirming both meet environmental and hazardous substance restrictions.

Q: What is the base product number relationship between these parts?

A: The 1KSMB62C uses base product number 1KSMB, while the 1KSMB62CA uses base product number 1KSMB62. Both derive from the same 1KSMB series, indicating common design lineage and electrical characteristics.

Q: Can the 1KSMB62CA be used in telecom applications originally specified for the 1KSMB62C?

A: The 1KSMB62C is specified for telecom applications, while the 1KSMB62CA is designated for general purpose applications. However, the electrical and mechanical specifications are identical. Application suitability depends on specific system requirements beyond component electrical ratings.