UM2S2025 Equivalent & Substitute Parts

Part Overview

The UM2S2025 is a glass body reed switch manufactured by Coto Technology, configured as a SPST-NO (Single Pole Single Throw - Normally Open) device. This component operates within a 20–25 AT range with a switching capacity of 250 mA at 175 V (AC/DC) and rated power of 5 VA. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for continued system design and maintenance applications. Surface mount packaging with axial flat termination enables integration in compact circuit designs.

Substiute Parts

UM2S2025

Coto TechnologyIn Stock: 1124UM2S2025 Datasheet

Current PartRFQ

FLEX-14-20-25

Littelfuse Inc.In Stock: 36737FLEX-14-20-25 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute identification for the UM2S2025 is based on the following critical electrical and mechanical parameters that must remain compatible:

Required Compatibility Parameters:

• Circuit configuration: SPST-NO
• Operate range: 20–25 AT
• Switching current: minimum 250 mA (AC/DC)
• Switching voltage: minimum 175 V (AC/DC)
• Rated power: minimum 5 VA
• Type: Glass body reed switch
• Operating temperature range: –40°C to 125°C

The FLEX-14-20-25 manufactured by Littelfuse Inc. meets these substitution criteria through equivalent circuit configuration, identical operate range, and superior electrical specifications that maintain full functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The FLEX-14-20-25 qualifies as a functional substitute for the UM2S2025 based on alignment of critical electrical parameters and compliance certifications. Both components demonstrate RoHS compliance (RoHS Compliant and ROHS3 Compliant respectively) and REACH unaffected status, confirming regulatory compatibility.

The FLEX-14-20-25 offers superior electrical performance characteristics, with higher switching current ratings (350 mA AC / 500 mA DC versus 250 mA AC/DC) and increased carry current capacity (1 A DC versus 500 mA). The DC switching voltage of 200 V exceeds the original 175 V requirement, providing additional margin. The AC switching voltage of 140 V falls below the original specification and requires evaluation against application-specific requirements.

The primary design consideration is the transition from surface mount to through-hole packaging. This architectural change necessitates circuit board layout modifications and may impact thermal management and mechanical assembly procedures. The slightly extended operate time (0.55 ms versus 0.4 ms) and release time (0.2 ms versus 0.1 ms) are engineering parameters that should be confirmed as acceptable within system timing constraints.

Frequently Asked Questions (FAQ)

Q: Why is the UM2S2025 being discontinued? A: The UM2S2025 carries a product status designation of obsolete. Industry-standard obsolescence for component lines requires identification and qualification of alternative products for ongoing production and maintenance support.

Q: Are the switching voltage specifications compatible between UM2S2025 and FLEX-14-20-25? A: The components differ in AC switching voltage specification (175 V for UM2S2025 versus 140 V for FLEX-14-20-25). For applications strictly requiring 175 V AC operation, this reduction must be evaluated in application context. DC switching voltage for FLEX-14-20-25 is rated at 200 V, exceeding the original 175 V specification.

Q: What impact does the mounting type change have? A: The UM2S2025 uses surface mount termination, while the FLEX-14-20-25 requires through-hole assembly. This requires circuit board redesign, different insertion and soldering procedures, and potential modifications to assembly line processes. Component footprints are not interchangeable.

Q: Can the FLEX-14-20-25 handle the same current levels? A: The FLEX-14-20-25 exceeds the original current specifications. Switching current is rated 350 mA (AC) and 500 mA (DC), compared to the UM2S2025 rating of 250 mA (AC/DC). Carry current is 1 A (DC) versus 500 mA (AC/DC), providing additional capacity margin.

Q: Are both components RoHS compliant? A: Both components are RoHS compliant. The UM2S2025 carries RoHS Compliant status, while the FLEX-14-20-25 carries ROHS3 Compliant status. Both are REACH unaffected, confirming regulatory alignment.

Q: Does the operate range remain identical? A: Yes. Both the UM2S2025 and FLEX-14-20-25 maintain the identical 20–25 AT operate range, ensuring consistent magnetic actuator compatibility in existing designs.