FRB2282 Equivalent & Substitute Parts

Part Overview

The FRB2282 is a glass body reed switch manufactured by Coto Technology, classified as SPST-NO (Single Pole Single Throw - Normally Open) with a rated switching capacity of 500mA at 200V and 10VA power rating. This component is currently listed as obsolete, necessitating identification of functionally compatible alternatives for ongoing system support and new designs requiring equivalent switching performance.

Substiute Parts

FRB2282

Coto TechnologyIn Stock: 1012FRB2282 Datasheet

Current PartRFQ

CT10-1030-G4

Coto TechnologyIn Stock: 48211CT10-1030-G4 Datasheet

SimilarRFQ

MDCG-4-12-33

Littelfuse Inc.In Stock: 2316MDCG-4-12-33 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FRB2282 are identified based on the following critical electrical and mechanical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Circuit configuration (SPST-NO maintained)
• Current switching capability (minimum 500mA AC/DC)
• Voltage switching capability (minimum 200V AC/DC)
• Operate range overlap or envelope containment (10 ~ 30AT baseline)
• Operating temperature range compatibility (-40°C ~ 125°C)
• RoHS3 compliance

Substitution Categories:

1. CT10-1030-G4 (Coto Technology) — Same manufacturer, molded body variant with identical electrical switching parameters (500mA, 140V AC / 200V DC). Surface mount package maintains board-level integration.

2. MDCG-4-12-33 (Littelfuse Inc.) — Glass body reed switch with dual-mode current switching (350mA AC / 500mA DC) and 140V AC / 200V DC voltage rating. Through-hole mounting represents package architecture change. Operate range 12 ~ 33AT encompasses the 10 ~ 30AT baseline requirement.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are ROHS3 compliant and carry Active product status, ensuring long-term availability and regulatory compliance compared to the obsolete FRB2282.

CT10-1030-G4 Selection: Recommended for designs requiring surface-mount package continuity with the FRB2282. This part maintains identical switching parameters (500mA AC/DC at 200V DC) and operate range (10 ~ 30AT). The molded body construction differs from the FRB2282 glass body design but provides equivalent electrical performance. AC voltage switching is reduced to 140V, which represents a design constraint for AC-dominated circuits operating above 140V.

MDCG-4-12-33 Selection: Recommended for through-hole implementations or designs tolerating package architecture change. This part maintains 500mA DC switching and 200V DC voltage capability. AC switching is limited to 350mA at 140V, requiring design review for AC-mode applications at the original 500mA specification. The glass body construction matches the FRB2282 type. All compliance and temperature specifications align with the original part.

Frequently Asked Questions (FAQ)

Q: Can CT10-1030-G4 directly replace FRB2282 in AC applications above 140V? A: No. The CT10-1030-G4 has a maximum AC voltage rating of 140V, compared to the FRB2282 specification of 200V AC. Applications requiring 200V AC switching must evaluate alternative options or derate the switching voltage.

Q: What is the primary difference between MDCG-4-12-33 and FRB2282 for AC applications? A: The MDCG-4-12-33 has an AC current switching limit of 350mA compared to the FRB2282 specification of 500mA. Both support 140V AC. For DC applications, both parts support 500mA, making the MDCG-4-12-33 fully compatible for DC-only circuits.

Q: Does package type affect electrical performance? A: No. The surface mount (FRB2282, CT10-1030-G4) and through-hole (MDCG-4-12-33) packages provide equivalent electrical switching performance. Package selection depends on PCB integration requirements and assembly process compatibility.

Q: Are all substitutes ROHS3 compliant? A: Yes. FRB2282, CT10-1030-G4, and MDCG-4-12-33 are all ROHS3 compliant and meet modern environmental and regulatory standards.

Q: What is the operating range specification, and how do substitutes compare? A: Operating range specifies the magnetic field (AT, ampere-turns) required to actuate the switch. FRB2282 operates at 10 ~ 30AT. CT10-1030-G4 matches this range exactly (10 ~ 30AT). MDCG-4-12-33 operates at 12 ~ 33AT, which encompasses the FRB2282 baseline but requires slightly higher activation force at the lower end. Both are functionally compatible.

Q: Can I use MDCG-4-12-33 in a surface-mount application? A: No. MDCG-4-12-33 is a through-hole component with axial termination. It is not compatible with surface-mount PCB designs without significant layout and assembly modifications.