FLEX-14-25-30 Equivalent & Substitute Parts

Part Overview

The FLEX-14-25-30 is a glass body reed switch manufactured by Littelfuse, configured as SPST-NO (Single Pole Single Throw - Normally Open) with a rated switching capacity of 350mA AC / 500mA DC at 140V AC / 200V DC. This through-hole component operates within a 25–30AT magnetic operate range and is rated for 10W power dissipation. The part is Active status and ROHS3 compliant, making it suitable for industrial control, telecommunications, and instrumentation applications. Equivalent and substitute parts may be required due to inventory constraints, lead time considerations, or application-specific performance requirements within compatible electrical and mechanical parameters.

Substiute Parts

FLEX-14-25-30

LittelfuseIn Stock: 8197FLEX-14-25-30 Datasheet

Current PartRFQ

KSK-1A66/3-2030

Standex-Meder ElectronicsIn Stock: 1307KSK-1A66/3-2030 Datasheet

DirectRFQ

SW GP560/10-15 AT

Standex-Meder ElectronicsIn Stock: 3413SW GP560/10-15 AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FLEX-14-25-30 are qualified based on the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

• Circuit configuration: SPST-NO
• Mounting type: Through Hole
• Termination style: Axial
• Rated power: 10W minimum
• Operating temperature range: -40°C minimum to 125°C minimum
• RoHS3 compliance
• Operate range overlap or compatibility with 25–30AT specification

Electrical Performance Tolerance: Substitute parts must maintain switching current capacity at or above the application requirement. Parts with higher voltage or current ratings are acceptable provided they do not introduce incompatibility with the circuit design. Operate range must encompass or closely align with the 25–30AT specification to ensure consistent magnetic actuation.

Parameter Comparison

Engineering Selection Recommendations

KSK-1A66/3-2030 (Standex-Meder Electronics): This substitute provides direct electrical compatibility with the FLEX-14-25-30. It maintains 10W rated power, SPST-NO configuration, and through-hole axial termination. The KSK-1A66/3-2030 offers 500mA switching current (matching DC specification of the main part) and 200V DC switching voltage, providing equivalent or superior performance in DC-dominant applications. The operate range of 20–30AT encompasses the main part's 25–30AT specification. Both parts are ROHS3 compliant and Active status. This substitute is suitable for direct replacement in applications where the main part is unavailable.

SW GP560/10-15 AT (Standex-Meder Electronics): This substitute is qualified for applications requiring higher switching current capacity (1A AC/DC) and broader operate range flexibility (10–50AT). The SW GP560/10-15 AT maintains SPST-NO configuration, through-hole mounting, and axial termination. It is ROHS3 compliant and Active status. The 10–50AT operate range provides wider magnetic sensitivity tolerance compared to the main part's 25–30AT specification. This substitute is suitable for applications where increased current handling or broader magnetic actuation range is beneficial, provided circuit design accommodates the different physical length (2.126" vs. 1.744").

Both substitutes maintain Active product status and full ROHS3 compliance, ensuring regulatory and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can KSK-1A66/3-2030 replace FLEX-14-25-30 in all applications? A: KSK-1A66/3-2030 is electrically compatible for applications operating within 500mA DC / 200V DC specifications. The operate range of 20–30AT encompasses the main part's 25–30AT specification. Physical dimensions are identical (1.744" length, similar body diameter), confirming through-hole PCB compatibility. Substitution is valid provided the application does not require the specific AC current rating of 350mA.

Q: What is the key difference between KSK-1A66/3-2030 and SW GP560/10-15 AT? A: KSK-1A66/3-2030 provides direct current and voltage equivalence to FLEX-14-25-30 with a narrower operate range (20–30AT). SW GP560/10-15 AT offers higher switching current (1A vs. 500mA) and a broader operate range (10–50AT), making it suitable for applications requiring greater magnetic sensitivity tolerance or higher current capacity. SW GP560/10-15 AT is physically longer (2.126" vs. 1.744"), which may affect PCB layout compatibility.

Q: Are all three parts ROHS3 compliant? A: Yes. FLEX-14-25-30, KSK-1A66/3-2030, and SW GP560/10-15 AT are all ROHS3 compliant and carry Active product status, ensuring regulatory compliance and ongoing manufacturer support.

Q: What is the operate range specification, and why does it matter for substitution? A: Operate range (measured in Ampere-Turns, AT) defines the magnetic field strength required to actuate the reed switch. FLEX-14-25-30 operates at 25–30AT. KSK-1A66/3-2030 operates at 20–30AT (compatible overlap), while SW GP560/10-15 AT operates at 10–50AT (broader range). Substitutes with overlapping or encompassing operate ranges maintain functional compatibility in magnetic actuation circuits.

Q: Can SW GP560/10-15 AT be used in space-constrained applications? A: SW GP560/10-15 AT has an overall length of 2.126" compared to 1.744" for FLEX-14-25-30. PCB layout and mechanical clearance must be verified before substitution in space-constrained designs. KSK-1A66/3-2030 maintains identical length and is preferred for direct physical replacement.

Q: What packaging considerations apply to these substitutes? A: FLEX-14-25-30 is supplied in Box packaging. KSK-1A66/3-2030 and SW GP560/10-15 AT are supplied in Bulk packaging. Procurement and handling procedures may differ; confirm packaging requirements with supply chain specifications.