Coto Technology 3660-12-72 Reed Relay - Equivalent & Substitute Parts

Part Overview

The Coto Technology 3660-12-72 is a 3-pole single-throw reed relay rated for 250 mA at 12 VDC coil voltage. This component is classified as obsolete, necessitating identification of compatible substitute parts for ongoing design support and procurement. The 3660 series represents legacy relay architecture; active alternatives from the manufacturer's current product lineup provide enhanced electrical ratings and manufacturing support while maintaining functional compatibility through equivalent switching characteristics.

Substiute Parts

3660-12-72

Coto TechnologyIn Stock: 11713660-12-72 Datasheet

Current PartRFQ

2333-12-000

Coto TechnologyIn Stock: 15462333-12-000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3660-12-72 is determined by the following criteria:

Critical Matching Parameters:

• Contact form configuration: 3PST-NO (3 Form A) - must match exactly
• Coil voltage: 12 VDC nominal
• Mounting type: Through Hole with PC Pin termination
• Contact current rating: must meet or exceed 250 mA minimum
• Switching voltage: must support 150 VAC and 150 VDC or higher
• Operating temperature range: -20°C to 85°C minimum coverage
• Coil activation voltage: 9 VDC must-operate specification

Acceptable Parameter Variations:

• Contact current rating may exceed specified minimum
• Switching voltage ratings may exceed specified maximum
• Coil current consumption may vary if drive circuitry supports the requirement
• Coil resistance may differ if operate and release voltage specifications remain compatible
• Operating characteristics (operate time, release time) may improve
• RoHS and regulatory compliance certifications may advance to later versions
• Seal rating may be enhanced (sealed versus unsealed)

The Coto Technology 2333-12-000 satisfies all critical matching parameters while providing enhanced electrical ratings and active product status.

Parameter Comparison

Engineering Selection Recommendations

The Coto Technology 2333-12-000 is the designated substitute for the obsolete 3660-12-72. Selection criteria are based on the following factors:

Product Status: The 2333-12-000 maintains active manufacturing status with confirmed inventory availability (1488 pcs), ensuring long-term procurement support and supply chain continuity compared to the obsolete 3660-12-72.

Regulatory Compliance: Both components satisfy RoHS and REACH requirements. The 2333-12-000 carries ROHS3 certification, representing compliance with the current revision of the Restriction of Hazardous Substances Directive, while the 3660-12-72 carries RoHS Compliant status without version specification. Both components are REACH Unaffected and classified under ECCN EAR99.

Functional Compatibility: The 2333-12-000 provides superior electrical performance through doubled contact current rating (500 mA versus 250 mA) and increased switching voltage limits (200 VAC/200VDC versus 150 VAC/150VDC). The identical coil voltage (12 VDC), contact form (3PST-NO), and activation thresholds (9 VDC must-operate, 1 VDC must-release) confirm direct functional substitution. Enhanced hermetic sealing in the 2333-12-000 provides additional environmental protection beyond the 3660-12-72 specification.

For designs currently utilizing the 3660-12-72, transition to the 2333-12-000 requires circuit verification of coil drive capability due to doubled coil current (12 mA versus 6 mA) and halved coil resistance (1 kOhms versus 2 kOhms), though standard 12 VDC logic circuits accommodate this increase without modification in typical applications.

Frequently Asked Questions (FAQ)

Q: Can the 2333-12-000 directly replace the 3660-12-72 in existing designs?

A: Direct socket and functional substitution is possible due to matched coil voltage (12 VDC), contact form (3PST-NO), mounting type (Through Hole PC Pin), and activation voltage thresholds (9 VDC must-operate, 1 VDC must-release). However, drive circuit coil current capability must support 12 mA rather than the original 6 mA specification. In designs with minimal coil drive margin, circuit analysis is required to confirm adequate source current capacity.

Q: What are the key electrical differences between these parts?

A: The 2333-12-000 provides enhanced current handling (500 mA versus 250 mA) and switching voltage ratings (200 VAC/200VDC versus 150 VAC/150VDC). Coil resistance is halved (1 kOhms versus 2 kOhms), resulting in doubled coil current draw (12 mA versus 6 mA). Operating characteristics show faster engage time (0.5 ms versus 0.75 ms). All other critical parameters, including temperature range, activation thresholds, and contact form, remain equivalent.

Q: Are there packaging differences between the 3660-12-72 and 2333-12-000?

A: The 3660-12-72 is specified with generic "-" packaging notation in the provided data. The 2333-12-000 is supplied in Tray packaging. Both components use Through Hole mounting with PC Pin termination, suitable for standard PCB assembly processes.

Q: What regulatory standards apply to both parts?

A: Both components are RoHS compliant (3660-12-72: RoHS Compliant; 2333-12-000: ROHS3 Compliant), REACH Unaffected, and classified under ECCN EAR99. Moisture sensitivity level is 1 (Unlimited) for both parts, eliminating bake-out requirements during assembly.

Q: Why is the 3660-12-72 classified as obsolete?

A: The 3660 series classification as obsolete indicates discontinued manufacturing and end-of-life product status. The Coto Technology 2300 series, represented by the 2333-12-000, represents the active product line replacement, offering improved electrical ratings, current manufacturing support, and enhanced sealing specifications while maintaining functional compatibility.