KRE1A12
12V coil SPST reed relay with 200V 0.5A switching, 1000V isolation, SIP package for industrial control.
Product Overview
Description
The KRE1A12 is a 12V DC coil reed relay designed for industrial control applications.
Features the same reliable reed switch technology as the 5V version but with 12V coil compatibility.
The SIP package allows easy integration into industrial control systems and PLCs.
Product Series
KRE
Primary Application
Industrial controls
Key Features
- 12V coil for industrial systems
- Hermetically sealed contacts
- Long life >100M operations
- 1000V isolation
- Compact SIP package
- Low coil power 144mW
- RoHS compliant
Specifications
| Contact Form | SPST-NO |
|---|---|
| Coil Voltage | 12V DC |
| Coil Resistance | 1000Ω typical |
| Switching Voltage | 200V DC/AC |
| Switching Current | 0.5A |
| Carry Current | 1.0A |
| Contact Rating | 10W |
| Isolation Voltage | 1000Vrms |
| Operate Time | 1.0ms typical |
| Release Time | 0.5ms typical |
| Package | SIP-4 |
| Operating Temperature | -40°C to +85°C |
Applications
Industrial controls
Industrial automation and control
PLC I/O modules
Electronic system design
Test equipment
Electronic system design
Process control
Industrial automation and control
Automation systems
Industrial automation and control
FAE Expert Insights
"For 12V systems, the KRE1A12 provides the same excellent reed relay performance with a convenient coil voltage. I've used these in automotive test equipment and industrial sensors. The switching speed is much faster than mechanical relays - typically 1-2ms vs 5-10ms. This makes them suitable for multiplexing applications. One practical advantage: reed relays have very low thermal EMF, making them excellent for precision measurement switching. The expected life of 100M+ operations at low loads means they'll likely outlast the equipment they're installed in."
12V reed relay for industrial control systems
— Senior FAE Team, BeiLuo
Frequently Asked Questions
Why choose 12V coil over 5V?
12V coils are preferred in industrial environments because: (1) Lower current draw for same power (12mA vs 10mA); (2) Better noise immunity in industrial settings; (3) Compatibility with standard 12V/24V industrial power; (4) Reduced voltage drop in long cable runs.
12V for industrial, 5V for logic-level systems.
What is the coil power consumption?
KRE1A12 consumes approximately 144mW (12V × 12mA). This is slightly higher than the 5V version but still very efficient compared to electromechanical relays. The low power consumption allows multiple relays to be driven from standard power supplies.
144mW coil power - efficient operation.
Can KRE1A12 be driven directly from PLC outputs?
Yes, most PLC relay outputs can directly drive KRE1A12. The 12mA coil current is within the capability of standard PLC outputs. for transistor outputs, verify the current rating. Always include a flyback diode for protection.
Compatible with most PLC relay outputs.
What is the operate time of KRE1A12?
Typical operate time is 1.0ms and release time is 0.5ms. This fast response makes reed relays suitable for high-speed test systems and applications requiring quick switching. The operate time is slightly longer than solid-state relays but much faster than large EMRs.
1ms operate, 0.5ms release - fast response.
Is KRE1A12 suitable for low-level switching?
Yes, reed relays excel at low-level switching (dry switching) of signals below 10mA and 10mV. The hermetically sealed contacts prevent oxidation, ensuring reliable contact resistance even after billions of operations at low levels.
Excellent for dry switching applications.