Coto Technology 9091-12-11 Relay - Equivalent & Substitute Parts

Part Overview

The Coto Technology 9091-12-11 is an active, ROHS3-compliant reed relay designed for general-purpose switching applications. This SPST-NO (1 Form A) relay operates at 12VDC with a 500 mA contact rating and is suitable for both AC and DC switching up to 200V. Substitute parts are identified to provide alternative sourcing options where inventory or supply chain considerations necessitate component alternatives while maintaining equivalent electrical and mechanical performance.

Substiute Parts

9091-12-11

Coto TechnologyIn Stock: 7039091-12-11 Datasheet

Current PartRFQ

MS12-1A87-75D

Standex-Meder ElectronicsIn Stock: 1105MS12-1A87-75D Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Standex-Meder Electronics MS12-1A87-75D qualifies as a direct substitute based on the following electrical and mechanical parameter alignment:

• Coil Voltage: Both parts operate at 12VDC
• Contact Form: Both are SPST-NO (1 Form A) configuration
• Contact Rating: Both support 500 mA continuous current
• Switching Voltage: Both support 200VAC and 200VDC maximum
• Mounting Type: Both utilize Through Hole mounting
• Termination Style: Both use PC Pin termination
• Coil Type: Both are Non Latching
• Product Status: Both are Active
• Regulatory Compliance: Both are ROHS3 Compliant with MSL 1 (Unlimited)

Parameter Comparison

Engineering Selection Recommendations

Both parts carry Active product status and maintain full ROHS3 compliance with MSL 1 (Unlimited) rating. The Standex-Meder MS12-1A87-75D is functionally equivalent for applications requiring 12VDC coil operation, SPST-NO switching configuration, and 500 mA contact rating. The substitute part operates at a lower threshold voltage (8.4 VDC vs 9 VDC) and exhibits a lower release threshold (1.8 VDC vs 1 VDC), with a slightly broader operating temperature specification at the lower end (-20°C) but limited to 70°C maximum versus the primary part's 85°C. Both parts are suitable for high-frequency switching applications, supporting identical 0.5 ms operate time and both are classified under the same harmonized tariff code (8536.41.0030) for regulatory purposes.

Frequently Asked Questions (FAQ)

Q: Can the MS12-1A87-75D directly replace the 9091-12-11 in my design? A: Yes, provided your application operating temperature does not exceed 70°C. Both parts share identical coil voltage, contact rating, switching voltage capability, and form factor specifications.

Q: Why does the substitute part have higher coil current (17.1 mA vs 12 mA)? A: Coil current differences stem from internal resistance variations (700 Ohms vs 1 kOhms). The substitute part remains suitable for the same 12VDC power supply designs as both values fall within standard design margins for relay control circuits.

Q: Are there temperature considerations for substitution? A: The primary part 9091-12-11 operates to 85°C while the substitute MS12-1A87-75D operates to 70°C maximum. Verify your application temperature requirements before substitution.

Q: What is the significance of the different release voltages (1 VDC vs 1.8 VDC)? A: The substitute part requires a higher voltage drop before the relay de-energizes. This difference is negligible for standard relay control circuits where coil voltage is removed entirely to release the relay. However, applications relying on partial coil de-energization should account for this parameter.

Q: Are both parts suitable for PC board mounting? A: Yes, both parts utilize Through Hole mounting with PC Pin termination, designed for standard PCB assembly methods.