The magnetic-latching TO-5 relay, originally conceived and developed by Teledyne, has become one of the industry standards for low-level switching from dry circuit to 1 ampere. Designed for high-density PC board mounting, its small size and low coil power dissipation make the 420 and 422 relays some of the most versatile ultraminiature relays available.
The Series 420/422 magnetic-latching relays are ideally suited for applications where power dissipation must be minimized. The relays can be operated with a short duration pulse. After the contacts have transferred, no external holding power is required.
The magnetic latching feature of the Series 420/422 relays provide a “memory” capability, since the relays will not reset upon removal of coil power.
All welded construction
Unique uni-frame design providing high magnetic efficiency and mechanical rigidity
High force/mass ratios for resistance to shock and vibration
Advanced cleaning techniques provide maximum assurance of internal cleanliness
Precious metal alloy contacts material with gold plating assures excellent high current and dry circuit switching capabilities