LY2-AC12 Equivalent & Substitute Parts

Part Overview

The Omron LY2-AC12 is a general purpose relay with DPDT (2 Form C) contact configuration rated for 10A at 12VAC coil voltage. This socketable relay is designed for industrial control applications requiring reliable switching of AC and DC loads. The part is currently active in production with RoHS compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the allowed parameter ranges for this relay category.

Substiute Parts

LY2-AC12

Omron Automation and SafetyIn Stock: 1187LY2-AC12 Datasheet

Current PartRFQ

K10P-11A15-12

TE Connectivity Potter & Brumfield RelaysIn Stock: 1248K10P-11A15-12 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The K10P-11A15-12 from TE Connectivity Potter & Brumfield Relays qualifies as a substitute based on the following allowed parameter alignment:

Matching Parameters:

• Coil voltage: 12VAC (identical)
• Contact form: DPDT (2 Form C) (identical)
• Mounting type: Socketable (identical)
• Termination style: Plug In compatible (K10P includes additional Quick Connect option)
• Coil type: Non Latching (identical)
• Relay type: General Purpose (identical)

Allowable Variations:

• Contact rating: 15A (exceeds 10A requirement; higher current capacity is acceptable for substitution)
• Operating temperature: -45°C ~ 70°C (exceeds -25°C ~ 55°C range; wider operating window is acceptable)
• Coil current: 100 mA vs. 91 mA (within acceptable tolerance for 12VAC coil circuits)
• Contact material: Silver Cadmium Oxide vs. Silver Alloy (both suitable for general purpose switching applications)

Parameter Comparison

Engineering Selection Recommendations

LY2-AC12 (Omron): Select this part when RoHS compliance is a mandatory requirement or when REACH unaffected status is specified in procurement requirements. The part is active in production with 1133 units in stock.

K10P-11A15-12 (TE Connectivity): This substitute provides higher contact current rating (15A vs. 10A) and faster switching response times (13ms operate, 10ms release vs. 25ms each). The wider operating temperature range (-45°C ~ 70°C) accommodates extended environmental conditions. However, this part is RoHS non-compliant and REACH affected. Select this substitute only when regulatory compliance restrictions do not apply and the enhanced electrical performance characteristics are beneficial to the application. 1180 units are in stock.

Frequently Asked Questions (FAQ)

Q: Can K10P-11A15-12 directly replace LY2-AC12 in existing socket applications?

A: Yes. Both relays are socketable with plug-in termination and identical DPDT contact configuration. Physical compatibility with standard relay sockets is maintained. Verify socket type compatibility with your specific application documentation.

Q: What is the impact of the higher 15A contact rating on the K10P-11A15-12?

A: The 15A rating provides additional margin for applications originally designed for 10A switching. This does not degrade performance in 10A applications; it extends the relay's capability range. No circuit modifications are required.

Q: Are there compliance implications when substituting K10P-11A15-12 for LY2-AC12?

A: Yes. The K10P-11A15-12 is RoHS non-compliant and REACH affected, while the LY2-AC12 is RoHS compliant and REACH unaffected. Substitution is only permissible in applications where these regulatory requirements do not apply. Verify compliance requirements with your design and procurement specifications before substitution.

Q: How do the switching time differences affect circuit performance?

A: The K10P-11A15-12 operates faster (13ms vs. 25ms) and releases faster (10ms vs. 25ms). For most general purpose control applications, this difference is not critical. Applications with strict timing requirements should evaluate whether faster response is beneficial or requires circuit adjustment.

Q: What is the difference in coil current between these relays?

A: The K10P-11A15-12 draws 100 mA compared to 91 mA for the LY2-AC12. This 9 mA difference is within normal tolerance for 12VAC relay circuits and does not typically require power supply redesign.

Q: Can I use K10P-11A15-12 in applications requiring lower switching voltage capability?

A: The K10P-11A15-12 has a maximum switching voltage of 120VAC, while the LY2-AC12 supports 250VAC and 125VDC. If your application requires switching at voltages above 120VAC, the K10P-11A15-12 is not suitable. Verify your load voltage requirements before substitution.