1KSMB130C Equivalent & Substitute Parts

Part Overview

The 1KSMB130C is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for telecom applications requiring transient voltage protection. This component is classified as a unidirectional Zener-type TVS diode in a surface mount DO-214AA (SMB) package. The 1KSMB130C is currently listed as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure supply chain availability for new production and field replacements.

Substiute Parts

1KSMB130C

Littelfuse Inc.In Stock: 8981KSMB130C Datasheet

Current PartRFQ

1KSMB130CA

Littelfuse Inc.In Stock: 32311KSMB130CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1KSMB130C is determined by equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 111V
• Voltage - Breakdown (Min): 124V
• Voltage - Clamping (Max) @ Ipp: 179V
• Current - Peak Pulse (10/1000µs): 5.6A
• Power - Peak Pulse: 1000W

Mechanical Equivalence Criteria:

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

The 1KSMB130CA meets all electrical and mechanical equivalence criteria. The primary differences between the main part and its substitute are product status (obsolete vs. active), packaging format (bulk vs. Tape & Reel), operating temperature range minimum (-65°C vs. -55°C), and compliance certifications (RoHS vs. ROHS3 and REACH).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 1KSMB130CA

The 1KSMB130CA is the direct functional equivalent of the 1KSMB130C. Both parts share identical electrical specifications across all critical parameters: reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, and peak pulse power. Both are housed in the DO-214AA (SMB) surface mount package with identical pinout and footprint compatibility.

The 1KSMB130CA holds active product status, ensuring ongoing availability and manufacturing support from Littelfuse Inc. This part is compliant with ROHS3 and REACH regulations, meeting current environmental and regulatory requirements for new product designs and manufacturing.

The operating temperature range of the 1KSMB130CA (-55°C to 150°C) covers the majority of industrial and commercial applications. Applications requiring the extended lower temperature range of the 1KSMB130C (-65°C) must evaluate whether the -55°C minimum of the 1KSMB130CA is acceptable for the specific thermal environment.

The 1KSMB130CA is supplied in Tape & Reel (TR) packaging, which is standard for automated assembly processes. If bulk packaging is required, contact the manufacturer or authorized distributor for alternative packaging options.

Frequently Asked Questions (FAQ)

Q: Can the 1KSMB130CA be used as a direct replacement for the 1KSMB130C in existing designs?

A: Yes. The 1KSMB130CA provides electrical and mechanical equivalence across all critical parameters. The parts are pin-compatible and footprint-compatible in DO-214AA (SMB) surface mount applications. The operating temperature range difference (-55°C minimum vs. -65°C minimum) must be evaluated against the specific application's thermal requirements.

Q: What is the difference between the packaging formats of these parts?

A: The 1KSMB130C is supplied in bulk packaging, while the 1KSMB130CA is supplied in Tape & Reel (TR) format. Tape & Reel packaging is optimized for automated pick-and-place assembly and is the standard format for high-volume production. Bulk packaging may be available through special order.

Q: Are there compliance differences between the 1KSMB130C and 1KSMB130CA?

A: The 1KSMB130C is RoHS Compliant. The 1KSMB130CA is ROHS3 Compliant and REACH Affected. ROHS3 represents the current revision of the RoHS directive and is the standard for new product designs. Both parts meet environmental compliance requirements; however, the 1KSMB130CA aligns with current regulatory standards.

Q: Why is the 1KSMB130C listed as obsolete?

A: Product obsolescence typically results from manufacturer lifecycle decisions, market demand shifts, or transition to improved product revisions. The 1KSMB130CA represents the active equivalent in the 1KSMB series and is the recommended part for new designs and ongoing production.

Q: What applications are supported by the 1KSMB130C and 1KSMB130CA?

A: The 1KSMB130C is specified for telecom applications. The 1KSMB130CA is specified for general purpose applications. Both parts provide identical transient voltage suppression performance and are suitable for protecting circuits from voltage transients in the 111V to 179V range with peak pulse currents up to 5.6A.

Q: Are there any electrical parameter differences between these parts?

A: No. Both parts are electrically identical across all specified parameters: reverse standoff voltage (111V), breakdown voltage (124V minimum), clamping voltage (179V maximum), peak pulse current (5.6A), and peak pulse power (1000W).