MINIATURE RELAY FOR WIDER APPLICATIONS HC RELAYS

Category: Electronics, Panasonic, Relays

Overview

The HC Relays datasheet by Panasonic highlights a range of miniature relays designed for various applications, offering an extra-long mechanical lifespan of at least 10⁸ operations for the DC type. These relays are available in four contact arrangements: 4 Form C, 3 Form C, 2 Form C, and 1 Form C, which correspond to their respective nominal switching capacities that range from 5 A to 10 A at 250 V AC. The datasheet specifies models suitable for both low and high-level loads (from 1OOHA to 10A).

Features

Key features include a maximum initial contact resistance of 30 mOhms, availability of sealed amber types, and bifurcated contacts for some models (HCAD). The contact materials used are gold-flashed silver alloy and gold-clad silver nickel, which help in maintaining reliability and performance.

Electrical Specifications

Electrical life expectancy varies according to voltage and load type, with the datasheet detailing different values for 125 V AC and 250 V AC resistive and inductive loads. Mechanical life is rated at 10⁸ operations for AC types and 5×10⁷ for DC types, both at 180 cycles per minute (cpm). The relays operate within a temperature range of -50°C to +70°C and can handle humidity levels from 5 to 85% R.H. without condensation.

Mechanical Specifications

The relays have a max operating speed of 20 cpm at maximum rating, with a max operate and release time of 20 ms each at nominal voltage. The operating speed pertains to the frequency at which the relay can be switched on and off. Initial insulation resistance is at least 1000 MW at 500 V DC, ensuring a robust performance against electrical breakdowns. Shock and vibration resistance are also specified, with functional shock resistance at 196 m/s² and destructive at 980 m/s². For vibration, the relay can withstand a frequency range from 10 to 55 Hz at a double amplitude of 2 mm for both functional and destructive settings.

Rating and Standards

The datasheet mentions that specifications can vary with foreign standards certification ratings, signaling to users that they should account for differences when operating in different international contexts. It also instructs users to consider the switching frequency, environmental conditions, and desired reliability level as factors that might affect the relay’s performance.

Additional Information

The unit’s weight is approximately 30 grams. Life expectancy, coil nominal operating power, and maximum switching power are detailed for each contact arrangement, making it easier for engineers and technicians to choose the appropriate relay for their needs. Remarks note the importance of checking the relay’s performance with the actual load to confirm reliability under specific conditions. Recommendations for operation, transport, and storage are included to maintain the relay’s integrity.

All rights to the content of the datasheet are reserved to Matsushita Electric Works, Ltd.