FRB2S2025 Equivalent & Substitute Parts

Part Overview

The FRB2S2025 is a Glass Body Reed Switch manufactured by Coto Technology, configured as SPST-NO (Single Pole Single Throw - Normally Open) with a switching capacity of 500mA at 200V and rated power of 10VA. This surface mount component operates within the 20 to 25AT activation range with 0.5ms operate time and 0.2ms release time.

The FRB2S2025 is classified as Obsolete. Direct substitution becomes necessary when procurement constraints exist or when design flexibility allows transition to active product lines with equivalent electrical and mechanical characteristics.

Substiute Parts

FRB2S2025

Coto TechnologyIn Stock: 895FRB2S2025 Datasheet

Current PartRFQ

MDSR-10-20-25

Littelfuse Inc.In Stock: 2411MDSR-10-20-25 Datasheet

DirectRFQ

MDSR-7-20-25

Littelfuse Inc.In Stock: 2004MDSR-7-20-25 Datasheet

DirectRFQ

FLEX-14-20-25

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the FRB2S2025 is determined by the following critical electrical and mechanical parameters:

Core Substitution Criteria:

• Circuit configuration: SPST-NO (single pole, single throw, normally open)
• Operate range: 20 ~ 25AT (activation point tolerance)
• Current switching capacity: minimum 500mA for AC/DC operation
• Voltage switching capacity: minimum 200V DC
• Power rating: minimum 10VA
• Operating temperature range: -40°C ~ 125°C
• Glass Body Reed type construction

The three substitute parts listed (MDSR-10-20-25, MDSR-7-20-25, and FLEX-14-20-25) share identical electrical circuit configurations, operate ranges, temperature ratings, and RoHS compliance status. Differences exist in mounting type (through-hole versus surface mount), body dimensions, termination geometry, and specific switching current/voltage ratings within acceptable design parameters.

Parameter Comparison

Engineering Selection Recommendations

For Direct Electrical Compatibility: The MDSR-10-20-25 and MDSR-7-20-25 from Littelfuse Inc. provide the closest electrical substitution to the FRB2S2025. Both parts meet or exceed the critical switching parameters: 500mA DC switching current, 200V DC switching voltage, and 10W power rating. Both are classified as Active products with ROHS3 compliance, providing long-term procurement stability.

Mounting Type Consideration: All three substitute parts feature Through Hole mounting, whereas the FRB2S2025 uses Surface Mount. Circuit board redesign is required if direct footprint compatibility is a design constraint. If mounting flexibility exists in the application, the electrical equivalence of the substitute parts supports direct functional substitution.

Alternative Option: The FLEX-14-20-25 offers identical electrical characteristics and active product status. Selection between MDSR-10-20-25, MDSR-7-20-25, and FLEX-14-20-25 should be based on packaging format availability (Box or Bulk), physical envelope constraints (body diameter and length), and current-carrying requirements (1A DC for MDSR-10 and FLEX-14; 800mA DC for MDSR-7).

Frequently Asked Questions (FAQ)

Q: Can MDSR-10-20-25, MDSR-7-20-25, or FLEX-14-20-25 directly replace FRB2S2025 in my circuit? A: Direct functional substitution is supported from an electrical standpoint. All three parts meet the critical parameters: SPST-NO configuration, 20-25AT operate range, 500mA DC switching current, and 200V DC switching voltage. Circuit board modification is required due to the change from Surface Mount to Through Hole mounting.

Q: What is the key difference between MDSR-10-20-25 and MDSR-7-20-25? A: Both parts are electrically equivalent. The differences are in physical dimensions (body length 0.400" vs 0.500"), operate time (0.5ms vs 0.6ms), and DC current-carrying capacity (1A vs 800mA). Selection depends on space constraints and continuous current requirements.

Q: Why does the MDSR-10-20-25 specify 350mA AC but the FRB2S2025 specifies 500mA AC? A: The FRB2S2025 and the MDSR series were designed with different AC/DC rating methodologies. The MDSR-10-20-25 supports 500mA DC operation, which meets the original part's requirements. For DC applications, the substitute provides equivalent performance.

Q: Are all substitute parts RoHS compliant? A: Yes. The FRB2S2025 carries RoHS Compliant status. All three substitutes (MDSR-10-20-25, MDSR-7-20-25, and FLEX-14-20-25) are ROHS3 Compliant, ensuring material composition compliance with current regulations.

Q: What if I need Surface Mount packaging like the original FRB2S2025? A: The provided substitute parts are all Through Hole configured. If Surface Mount is a mandatory design requirement, alternative reed switch suppliers and part numbers outside this substitution list must be evaluated.