Coto Technology 9081-24-10 Equivalent & Substitute Parts

Part Overview

The Coto Technology 9081-24-10 is a reed relay with SPST-NO (Single Pole Single Throw, Normally Open) contact form, rated for 500 mA at switching voltages up to 200VAC/200VDC. This component operates on a 24VDC coil with non-latching characteristics and EMI shielding. The product status is obsolete, making identification of compatible substitutes essential for continued system support and new design implementations.

Substiute Parts

9081-24-10

Coto TechnologyIn Stock: 8869081-24-10 Datasheet

Current PartRFQ

HE3321A2400

Littelfuse Inc.In Stock: 5858HE3321A2400 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 9081-24-10 with the Littelfuse HE3321A2400 is based on compatibility across the following critical electrical and mechanical parameters:

• Coil Voltage: Both parts operate on 24VDC
• Contact Form: Both use SPST-NO (1 Form A) configuration
• Contact Rating: Both are rated for 500 mA switching current
• Coil Current: Both require 12 mA coil current
• Must Operate Voltage: Both operate with 18 VDC minimum
• Must Release Voltage: Both release at 2 VDC
• Coil Resistance: Both have 2 kOhms coil resistance
• Mounting Type: Both use Through Hole mounting
• Termination Style: Both use PC Pin termination

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse HE3321A2400 serves as a direct functional substitute for the obsolete Coto Technology 9081-24-10. Both components share identical electrical characteristics across coil voltage, contact form, current ratings, and operating thresholds. The HE3321A2400 benefits from active product status, ensuring continued availability and supplier support.

The Littelfuse part provides extended operating temperature range (-40°C to 85°C versus -20°C to 85°C), enhancing performance in lower temperature environments. Both components maintain equivalent RoHS and REACH compliance certifications, with the Littelfuse part meeting ROHS3 requirements.

Minor timing differences exist: the Littelfuse HE3321A2400 exhibits longer operate and release times (1 ms each) compared to the Coto part (0.5 ms operate, 0.2 ms release). These timing variations are within typical reed relay specifications and do not affect functional substitution for standard relay applications.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse HE3321A2400 directly replace the Coto 9081-24-10 in existing assemblies?

A: Yes. Both components share identical coil voltage (24VDC), contact form (SPST-NO), current rating (500 mA), and termination style (PC Pin). Through Hole mounting compatibility is identical. Electrical operating characteristics including must-operate and must-release voltages are equivalent.

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

A: The primary differences are product status and operating timing. The Coto part is obsolete, while the Littelfuse HE3321A2400 is an active product. The Littelfuse part has slightly longer switching times (1 ms operate and release versus 0.5 ms and 0.2 ms) and an extended operating temperature minimum of -40°C rather than -20°C.

Q: Are there packaging differences?

A: The Coto 9081-24-10 packaging is listed as standard, while the Littelfuse HE3321A2400 is provided in bulk packaging. Both components use identical PC Pin termination suitable for through-hole PCB mounting.

Q: Do both parts meet the same compliance standards?

A: Both components are RoHS compliant and REACH Unaffected. The Littelfuse part specifically meets ROHS3 requirements. Both are classified under ECCN EAR99 and HTSUS code 8536.41.0030, indicating equivalent regulatory classification.

Q: What is the impact of the switching voltage difference on compatibility?

A: The Coto part is rated for 200VAC and 200VDC maximum switching voltage, while the Littelfuse part is rated for 200VDC maximum. For 24VDC applications, this represents no practical difference. Applications requiring 200VAC switching should verify that the Littelfuse HE3321A2400 meets specific AC voltage requirements through detailed specifications.