National Instruments CFP-RLY-421 用户手册

© National Instruments Corp.

The following specifications are typical for a range of –40 to 60 °C 
unless otherwise noted.

Number of channels.......................... 8

Relay type ......................................... 1 SPST, nonlatching

Maximum switching capacity (resistive load) 

–40 to 60 °C

AC ........................................ 1.5 A at 250 VAC
DC ........................................ 1.5 A at 0 to 35 VDC

1 A at 55 VDC
0.4 A at 120 VDC

Minimum switching load.................. 10 mA at 5 VDC

On resistance..................................... 100 m

Ω

Off-state leakage (120 VDC/250 VAC)

Expected life

Mechanical ................................. 20 

×

 10

6

 operations min

Electrical (at 30 cpm) ................. 300,000 operations at 1.5 A, 

35 VDC;
100,000 operations at 1.5 A, 
250 VAC

Maximum switching frequency

Mechanical ................................. 20 operations per second
Electrical..................................... 1 operation per second at 

maximum load

Relays operate time........................... 6 ms typical, 8 ms max

Relays release time ........................... 3 ms typical, 4 ms max

Relay bounce time ............................ 3 ms max

Contact material................................ Gold-plated silver cadmium 

oxide

DC

0.12 

µA

50/60 Hz

8 

µA