FRB2026 Reed Switch - Equivalent & Substitute Parts

Part Overview

The FRB2026 is a glass body reed switch manufactured by Coto Technology, configured as a SPST-NO (Single Pole Single Throw - Normally Open) device rated for 500mA at 200V with a 10VA power rating. This surface mount component operates within a 20-25 AT magnetic operate range and is classified as obsolete product status. Finding equivalent substitute parts is necessary due to obsolescence and potential supply chain discontinuation, requiring identification of compatible alternatives that maintain functional equivalence across key electrical and mechanical parameters.

Substiute Parts

FRB2026

Coto TechnologyIn Stock: 931FRB2026 Datasheet

Current PartRFQ

MDSM-10R-20-25

Littelfuse Inc.In Stock: 52608MDSM-10R-20-25 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FRB2026 is based on functional equivalence across the following critical parameters:

Mandatory Compatibility Parameters:

• Circuit Configuration: SPST-NO topology must be maintained
• Operate Range: 20-25 AT magnetic sensitivity
• Switching Current: 500mA (AC/DC) or equivalent capability
• Switching Voltage: 200V (AC and DC) or higher rating
• Power Rating: 10VA or greater
• Mounting Type: Surface Mount with Gull Wing termination
• Operating Temperature: -40°C to 125°C or wider range
• RoHS Compliance: ROHS3 Compliant status required

The MDSM-10R-20-25 from Littelfuse Inc. qualifies as a substitute based on matching circuit configuration, operate range, termination style, mounting type, temperature range, and RoHS compliance. This part maintains functional equivalence while offering active product status and enhanced inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The MDSM-10R-20-25 is qualified as a direct substitute for the FRB2026 based on matching SPST-NO circuit topology, identical 20-25 AT operate range, equivalent surface mount gull wing termination, and identical operating temperature specifications. Both components maintain ROHS3 compliance and REACH unaffected status. The MDSM-10R-20-25 provides the advantage of active product status with significantly greater inventory availability (52,514 units in stock versus 872 units), ensuring long-term supply chain reliability.

The MDSM-10R-20-25 exhibits a 60mA reduction in AC switching current (350mA versus 500mA) and a 60V reduction in AC switching voltage (140V versus 200V). DC switching parameters remain equivalent at 500mA and 200V respectively. Design applications operating at full AC specifications (500mA, 200V) require confirmation that operation at reduced AC ratings does not compromise system performance. Power dissipation differences between 10VA and 10W ratings should be evaluated within specific circuit context.

Frequently Asked Questions (FAQ)

Q: Does the MDSM-10R-20-25 directly replace the FRB2026 in all applications?

A: The MDSM-10R-20-25 matches the FRB2026 in circuit configuration (SPST-NO), magnetic operate range (20-25 AT), surface mount gull wing termination, and operating temperature range (-40°C to 125°C). However, applications using AC switching at 500mA and 200V should verify compatibility with the MDSM-10R-20-25's reduced AC ratings (350mA, 140V). DC applications encounter no current or voltage derating.

Q: What is the difference between 10VA and 10W power ratings?

A: VA (volt-amperes) and W (watts) represent different aspects of power consumption. VA indicates apparent power (volts × amps), while W indicates true power. These values differ based on load characteristics. Both parts are rated for 10-unit power capacity, sufficient for equivalent applications in most switching scenarios.

Q: Are there mechanical differences between these surface mount reed switches?

A: Both components use gull wing termination and surface mount configuration. The FRB2026 body measures 0.549" L × 0.100" W × 0.090" H with 0.114" height above board. The MDSM-10R-20-25 body measures 0.071" diameter × 0.400" length with 0.079" height above board. These dimensional differences may affect PCB layout compatibility; verify footprint requirements before substitution.

Q: Should I be concerned about the obsolete status of the FRB2026?

A: Yes. The FRB2026's obsolete product status indicates manufacturing discontinuation. With 872 units currently in stock, supply is limited. The active status of the MDSM-10R-20-25, combined with 52,514 units in stock, ensures sustainable supply availability for production requirements and future design revisions.

Q: Are both parts compliant with environmental and trade requirements?

A: Both the FRB2026 and MDSM-10R-20-25 maintain ROHS3 compliance and REACH unaffected status. Both components carry EAR99 ECCN classification and identical HTSUS codes (8536.50.9065), satisfying current environmental and international trade regulations.