K2400S Equivalent & Substitute Parts

Part Overview

The K2400S is a SIDAC thyristor manufactured by Littelfuse Inc., designed for applications requiring a 220–250V breakover voltage with 1A peak output capability in a compact DO-214AA/SMB package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The K2400SRP serves as the direct active substitute, offering identical electrical specifications with improved availability.

Substiute Parts

K2400S

Littelfuse Inc.In Stock: 1176K2400S Datasheet

Current PartRFQ

K2400SRP

Littelfuse Inc.In Stock: 3321K2400SRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the K2400S is determined by strict equivalence across the following critical parameters:

• Voltage - Breakover: 220 ~ 250V (exact match required)
• Current - Breakover: 10 µA (exact match required)
• Current - Hold (Ih) (Max): 150 mA (exact match required)
• Current - Peak Output: 1 A (exact match required)
• Operating Temperature Range: -40°C ~ 125°C (TJ) (exact match required)
• Package / Case: DO-214AA, SMB (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

The K2400SRP is classified as a direct substitute because it maintains identical electrical and mechanical specifications while offering active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The K2400SRP is the appropriate selection for applications currently using or requiring K2400S functionality. Both components are manufactured by Littelfuse Inc. and maintain identical electrical and thermal specifications. The K2400SRP carries active product status, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 compliant and suitable for equivalent circuit implementations. The K2400SRP is offered in Cut Tape and Digi-Reel packaging formats, providing flexibility for both prototype and production-volume procurement.

Frequently Asked Questions (FAQ)

Q: Can K2400SRP be used as a direct replacement for K2400S in existing designs?

A: Yes. The K2400SRP is electrically and mechanically identical to the K2400S across all specified parameters, including breakover voltage, current ratings, temperature range, and package configuration. Direct substitution is supported without circuit modification.

Q: What is the primary reason to transition from K2400S to K2400SRP?

A: The K2400S is classified as obsolete. The K2400SRP is the active equivalent, ensuring continued availability and supply chain support for new production and field replacements.

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

A: No. Both the K2400S and K2400SRP are ROHS3 compliant and carry identical regulatory classifications (ECCN: EAR99, HTSUS: 8541.30.0080).

Q: What packaging formats are available for the K2400SRP?

A: The K2400SRP is supplied in Cut Tape (CT) and Digi-Reel® formats, accommodating both manual assembly and automated pick-and-place operations.

Q: Are there any thermal or electrical performance differences between K2400S and K2400SRP?

A: No. Both components operate across the identical temperature range (-40°C ~ 125°C TJ) and maintain the same electrical specifications for breakover voltage, breakover current, hold current, and peak output current.