1.5KE30C-B Equivalent & Substitute Parts

Part Overview

The 1.5KE30C-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This bidirectional zener diode operates in the DO-201 through-hole package and provides 1500W peak pulse power handling capability. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and component procurement.

Substiute Parts

1.5KE30C-B

Littelfuse Inc.In Stock: 10881.5KE30C-B Datasheet

Current PartRFQ

1.5KE30CA

Taiwan Semiconductor CorporationIn Stock: 302301.5KE30CA Datasheet

DirectRFQ

1.5KE30CA-B

Littelfuse Inc.In Stock: 20541.5KE30CA-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1.5KE30C-B are qualified based on the following electrical and mechanical parameters:

• Reverse standoff voltage: 25.6V (identical)
• Breakdown voltage minimum: 27V to 28.5V range
• Clamping voltage maximum: 41.4V to 43.47V range
• Peak pulse current: 36.7A to 38A range
• Peak pulse power: 1500W (identical)
• Package type: DO-201 through-hole (identical)
• Operating temperature range: -55°C to 175°C (identical)
• Bidirectional channels: 1 (identical)
• Type: Zener (identical)

The identified substitute parts maintain compatibility within these electrical tolerances and share identical mechanical and thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

The 1.5KE30C-B is obsolete and no longer in active production. Both substitute parts maintain active product status and are available in production quantities.

1.5KE30CA-B (Littelfuse Inc.): This part is manufactured by the same original equipment manufacturer as the main part. It provides identical reverse standoff voltage, peak pulse power, and operating temperature range. The clamping voltage is reduced to 41.4V (from 43.47V), and peak pulse current remains at 36.7A. This part is supplied in bulk packaging and carries ROHS3 compliance with REACH unaffected status.

1.5KE30CA (Taiwan Semiconductor Corporation): This part provides identical reverse standoff voltage and peak pulse power specifications. The clamping voltage is 41.4V, and peak pulse current is 38A. This part is supplied in tape and reel packaging and carries ROHS3 compliance with REACH unaffected status.

Both substitute parts are electrically compatible within the specified parameter ranges and share identical mechanical and thermal characteristics with the obsolete main part.

Frequently Asked Questions (FAQ)

Q: Can 1.5KE30CA-B and 1.5KE30CA be used interchangeably with 1.5KE30C-B?

A: Both parts meet the electrical parameter requirements for substitution. The primary differences are manufacturer (Littelfuse vs. Taiwan Semiconductor Corporation for 1.5KE30CA) and packaging format (bulk vs. tape and reel). Selection depends on procurement requirements and supply chain preferences.

Q: What is the significance of the clamping voltage difference between the main part and substitutes?

A: The main part specifies a maximum clamping voltage of 43.47V, while both substitutes specify 41.4V. Both values fall within acceptable operating ranges for TVS diode applications. The lower clamping voltage of the substitutes provides slightly tighter voltage regulation.

Q: Are there any compliance or certification differences between the substitute parts?

A: All three parts are ROHS3 compliant. The 1.5KE30CA-B and 1.5KE30CA both carry REACH unaffected status. Moisture sensitivity level is 1 (unlimited) for all parts.

Q: Does the packaging format affect electrical performance?

A: No. Packaging format (bulk vs. tape and reel) affects only procurement and handling logistics. Electrical and thermal performance remain identical regardless of packaging format.

Q: What is the peak pulse current difference between 1.5KE30CA-B and 1.5KE30CA?

A: The 1.5KE30CA-B maintains 36.7A peak pulse current (matching the main part), while 1.5KE30CA specifies 38A. Both values are within acceptable operating ranges for this device category.