Coto Technology 9002-05-10 Equivalent & Substitute Parts

Part Overview

The Coto Technology 9002-05-10 is an RF SPST-NO relay rated for 500 mA at 5VDC coil voltage. This non-latching relay features a magnetic shield and operates across a temperature range of -20°C to 85°C. The part is Active in product status and RoHS3 compliant. Substitute parts are identified when equivalent electrical performance, contact ratings, coil specifications, and mechanical compatibility are maintained within the specified parameters.

Substiute Parts

9002-05-10

Coto TechnologyIn Stock: 9629002-05-10 Datasheet

Current PartRFQ

HE3621A0540

Littelfuse Inc.In Stock: 13794HE3621A0540 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Coto Technology 9002-05-10 is determined by the following critical parameters:

Electrical Compatibility:

• Coil voltage must be 5VDC
• Contact form must be SPST-NO (1 Form A)
• Contact current rating must be 500 mA minimum
• Switching voltage must support 200VDC maximum
• Coil type must be non-latching

Mechanical Compatibility:

• Mounting type must be through-hole
• Termination style must be PC pin
• Packaging must be tube

Regulatory & Environmental:

• RoHS3 compliance required
• MSL rating of 1 (Unlimited) required
• Operating temperature range must encompass the application requirements

The Littelfuse Inc. HE3621A0540 meets these substitution criteria across all specified parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: Coto Technology 9002-05-10

The Coto 9002-05-10 is Active in product status with full RoHS3 compliance and REACH unaffected designation. This part is suitable for applications requiring the specified electrical and mechanical parameters.

Substitute Part: Littelfuse Inc. HE3621A0540

The Littelfuse HE3621A0540 is Active in product status and maintains equivalent RoHS3 compliance and REACH unaffected status. This substitute part meets all critical electrical parameters including 5VDC coil voltage, SPST-NO contact form, and 500 mA contact rating. The substitute operates across an extended temperature range (-40°C to 85°C) compared to the primary part (-20°C to 85°C), providing broader environmental coverage. Both parts share identical mounting type (through-hole), termination style (PC pin), and regulatory certifications.

The Littelfuse HE3621A0540 operates with lower coil current (10 mA versus 14.3 mA) and higher coil resistance (500 Ohms versus 350 Ohms), resulting in reduced power consumption. Timing characteristics differ, with the substitute exhibiting longer operate and release times (1 ms each versus 0.35 ms and 0.1 ms respectively). These timing differences are compatible with applications not requiring the faster switching performance of the primary part.

Frequently Asked Questions (FAQ)

Q: What determines if the Littelfuse HE3621A0540 can replace the Coto 9002-05-10?

A: Substitution is valid when the following parameters match or are compatible: 5VDC coil voltage, SPST-NO contact form, 500 mA contact rating, non-latching coil type, through-hole mounting, PC pin termination, and RoHS3 compliance. The Littelfuse part meets all these criteria.

Q: Are there differences in switching speed between these parts?

A: Yes. The Coto 9002-05-10 operates in 0.35 ms and releases in 0.1 ms. The Littelfuse HE3621A0540 operates in 1 ms and releases in 1 ms. Applications requiring faster switching response should retain the primary part.

Q: Does the Littelfuse substitute work in colder environments?

A: The Littelfuse HE3621A0540 operates from -40°C to 85°C, extending the lower temperature limit by 20°C compared to the Coto part (-20°C to 85°C). Both parts operate to 85°C maximum.

Q: What is the difference in coil power consumption?

A: The Littelfuse HE3621A0540 draws 10 mA at 5VDC (50 mW), while the Coto 9002-05-10 draws 14.3 mA at 5VDC (71.5 mW). The substitute provides approximately 30% lower power consumption.

Q: Are both parts available in tube packaging?

A: Yes. Both the Coto 9002-05-10 and Littelfuse HE3621A0540 are supplied in tube packaging.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both parts are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS code 8536.41.0030.

Q: Can I use the Littelfuse part if my application requires the faster switching time of the Coto part?

A: No. If your application requires operate time of 0.35 ms or release time of 0.1 ms, the Littelfuse substitute with 1 ms timing is not suitable. Retain the Coto 9002-05-10 for such applications.