K2500F1 Equivalent & Substitute Parts

Part Overview

The K2500F1 is a SIDAC thyristor manufactured by Littelfuse Inc., rated for 240–280V breakover voltage with 1A peak output current in a TO-202 Long Tab package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The K2500F1 maintains full electrical and thermal compatibility with active alternative configurations that preserve the core electrical specifications while offering different packaging options.

Substiute Parts

K2500F1

Littelfuse Inc.In Stock: 5434K2500F1 Datasheet

Current PartRFQ

K2500GRP

Littelfuse Inc.In Stock: 5199K2500GRP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the K2500F1 is determined by electrical parameter equivalence across the following criteria:

• Voltage - Breakover: 240 ~ 280V (identical range required)
• Current - Breakover: 10 µA (identical specification required)
• Current - Hold (Ih) (Max): 150 mA (identical specification required)
• Current - Peak Output: 1 A (identical specification required)
• Operating Temperature Range: -40°C ~ 125°C (TJ) (identical range required)
• RoHS Compliance: ROHS3 Compliant (regulatory equivalence required)

The K2500GRP qualifies as a direct electrical substitute, maintaining all electrical parameters while differing only in package configuration (DO-15 Axial vs. TO-202 Long Tab) and product status (Active vs. Obsolete). Package selection depends on circuit board layout and mechanical mounting requirements.

Parameter Comparison

Engineering Selection Recommendations

The K2500GRP is the direct electrical equivalent for K2500F1 applications. Selection between these parts is determined by packaging requirements and product lifecycle status:

• K2500F1 is obsolete and should not be selected for new designs or long-term production planning.
• K2500GRP is active and maintains full regulatory compliance (ROHS3 Compliant), making it the appropriate choice for current and future applications.
• Both parts are manufactured by Littelfuse Inc. and carry identical electrical specifications, ensuring functional interchangeability within the constraints of mechanical package compatibility.
• Package differences (TO-202 Long Tab vs. DO-15 Axial) require circuit board layout verification to confirm mechanical fit and lead configuration compatibility.

Frequently Asked Questions (FAQ)

Q: Can K2500GRP directly replace K2500F1 in existing circuits?

A: K2500GRP provides complete electrical equivalence to K2500F1. Substitution is valid provided the circuit board layout accommodates the DO-15 Axial package configuration. Lead spacing and mounting hole patterns must be verified against the original TO-202 Long Tab design.

Q: What is the primary reason for substituting K2500F1?

A: K2500F1 is classified as obsolete. K2500GRP is the active equivalent from the same manufacturer, ensuring continued availability and supply chain reliability.

Q: Are there compliance differences between K2500F1 and K2500GRP?

A: Both parts are ROHS3 Compliant. No regulatory compliance differences exist between the two parts.

Q: What parameters must remain identical for substitution to be valid?

A: Voltage - Breakover (240 ~ 280V), Current - Breakover (10 µA), Current - Hold (150 mA), Current - Peak Output (1 A), and Operating Temperature Range (-40°C ~ 125°C) must all remain unchanged. These parameters define the functional equivalence class for SIDAC thyristors in this voltage and current rating.

Q: Does packaging affect electrical performance?

A: Packaging does not affect electrical performance. TO-202 Long Tab and DO-15 Axial packages are mechanical variants only. Selection is based on circuit board layout and mechanical mounting requirements.