Teledyne Relays has introduced an hermetically sealed LoopBack relay combining two DPDT electromechanical relays in one package that includes an internal bypass path for automated test equipment (ATE) applications. The device combines two Teledyne RF300 series relays, which eliminates the need for external PCB traces in loop-back test applications.
The LoopBack relay is designed for digital signalling applications and provides high signal integrity up to 12 Gbps data rates. It is available with two different internal paths: through and AC bypass. The through path provides a loopback path across high-performance contact material, while the AC bypass path adds a coupling capacitor across each loopback path.
In-line capacitors allow designers to eliminate the footprints for external components, while performing AC bypass functions internal to the relay. The capacitors used features excellent signal integrity as well as low-loss, high-frequency performance. The double-pole design of the LoopBack relay is well suited for differential signalling, allowing one relay to provide transmit and receive signals and their inversions to the device under test or through the bypass path.
In addition to the through-hole mount (LB363 series), the relay is available in a surface mount configuration with stub leads and a ground shield (GLB363 series). The surface mount ground shield provides improved, high-data-rate and high-frequency performance, as well as improved repeatability. Various ground pin configurations for the through-lead models are available upon request.
The LB363 series measures 8,51 x 20,45 x 9,52 mm, excluding leads, and weighs 4,53 g. The GLB363 series measures 9,53 x 12,96 x 10,54 mm, including ground shield, and weighs 5,10 g.
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