Equivalent & Substitute Parts for Coto Technology 2920-12-111

Part Overview

The Coto Technology 2920-12-111 is a reed relay with SPST-NO contact configuration rated for 1A at 12VDC coil voltage. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs. Reed relays in this category serve as electromagnetic switching devices for low-signal applications requiring fast switching response and compact form factors.

Substiute Parts

2920-12-111

Coto TechnologyIn Stock: 11432920-12-111 Datasheet

Current PartRFQ

SHV12-1A85-78L4K

Standex-Meder ElectronicsIn Stock: 1823SHV12-1A85-78L4K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Coto Technology 2920-12-111 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Coil voltage: 12VDC
• Contact form: SPST-NO (1 Form A)
• Contact current rating: 1 A minimum
• Mounting type: Through Hole
• Termination style: PC Pin
• Coil type: Non Latching

The substitute part SHV12-1A85-78L4K from Standex-Meder Electronics satisfies all mandatory parameters. Additional performance characteristics such as switching voltage, coil current, operate/release times, and operating temperature range may vary within acceptable engineering tolerances for equivalent functionality.

Parameter Comparison

Engineering Selection Recommendations

The Standex-Meder Electronics SHV12-1A85-78L4K is a direct functional equivalent for the obsolete Coto Technology 2920-12-111. Selection of this substitute is supported by the following factors:

Product Status: The SHV12-1A85-78L4K maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete 2920-12-111.

Regulatory Compliance: Both components satisfy RoHS and REACH requirements. The substitute achieves ROHS3 compliance, representing current regulatory standards. Both components carry EAR99 classification and share identical HTSUS coding (8536.41.0030).

Electrical Equivalence: Core electrical parameters—coil voltage, contact form, current rating, and coil type—are identical. The substitute demonstrates enhanced performance characteristics including higher switching voltage capability (1000VAC/1000VDC versus 500VAC/500VDC), lower coil current draw (24 mA versus 48 mA), and faster release time (0.1 ms versus 1 ms).

Physical Compatibility: Both components utilize through-hole mounting with PC pin termination, enabling direct board-level substitution without redesign.

Frequently Asked Questions (FAQ)

Q: Can the Standex-Meder SHV12-1A85-78L4K directly replace the Coto 2920-12-111 in existing designs?

A: Yes. Both components share identical coil voltage (12VDC), contact configuration (SPST-NO), current rating (1A), mounting type (through-hole), and termination style (PC pin). Direct substitution is supported at the board level.

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

A: The substitute offers enhanced performance: higher maximum switching voltage (1000VAC/1000VDC versus 500VAC/500VDC), lower coil current consumption (24 mA versus 48 mA), faster release time (0.1 ms versus 1 ms), and extended operating temperature range (-40°C to 100°C versus -20°C to 85°C). These differences represent improvements over the original design.

Q: Are there packaging differences between the two parts?

A: The Coto 2920-12-111 is supplied in standard packaging, while the Standex-Meder SHV12-1A85-78L4K is supplied in tube packaging. Both maintain identical through-hole PC pin termination suitable for standard PCB assembly processes.

Q: Do both relays meet current regulatory requirements?

A: Yes. Both components are RoHS compliant and REACH unaffected. The substitute achieves ROHS3 compliance, representing the current regulatory standard. Both carry EAR99 export classification.

Q: What is the coil resistance difference, and does it affect circuit design?

A: The substitute has 500 Ohms coil resistance compared to 250 Ohms in the original. This results in lower coil current (24 mA versus 48 mA) at 12VDC, reducing power consumption and heat generation. Circuit designs must account for this higher impedance when calculating drive current requirements.

Q: Are the operate and release times compatible with existing circuit timing?

A: The substitute exhibits faster switching characteristics: 1.1 ms operate time (versus 1.5 ms) and 0.1 ms release time (versus 1 ms). These improvements are generally compatible with applications designed for the original relay. Verify timing-critical applications against specific circuit requirements.