Specifications

18
HP 44471A
• Switching up to 2 A, 250 V
• High isolation for mV level signal switching
Description
The HP 44471A is a 10-channel 1-wire Form A general
purpose relay module. It can be used to control DUT
power, to actuate external relay or to form an
attenuator. Each relay on the module is rated for
switching up to 250 V, 2 A, or up to 60 W or 125 VA. The
initial closed channel resistance is lower than 1 Ohm.
The HP 44471A exhibits low thermal characteristics,
which make it ideal for independent signal switching. A
screw terminal block is provided for ease of wiring.
10-channel General Purpose Relay Module
HP 44471D
• Switching up to 1 A, 250 V
• High isolation for mV level signal switching
Description
The HP 44471D is a 20-channel 1-wire Form A general
purpose relay module. It can be used to control DUT
power, to actuate external relay or to form an
attenuator. Each relay on the module is rated for
switching up to 250 V, 1 A, or up to 60 W or 125 VA. The
initial closed channel resistance is lower than 1 Ohm.
The HP 44471D exhibits low thermal characteristics,
which make it ideal for independent signal switching. A
screw terminal block is provided for ease of wiring.
Specifications
General Specifications
Relays: Armature latching relay
Thermal Offset: <3µV /channel
Relay Life (mechanical): 10
8
Maximum Scan Rate: 43 ch/ sec
Input Characteristics
Maximum Current: 44470A 2A
44471D 1A
Maximum Voltage: 250V
Maximum Power:
Per channel 44471A 60W or 125VA
44471D 60W or 125VA
Per module 44471A 600W or 1250 VA
44471D 1200W or 2500 VA
Initial Closed Channel Resistance: <1 Ω
DC Isolation
Open Channel, Channel-Channel:
<(40°C, 60% RH) >10
11
Ω
Channel-Chassis:
<(40°C, 60% RH) 44471A >5x10
11
Ω
44471D >5x10
11
Ω
AC Isolation
Capacitance (with 1 channel closed):
Open Channel, Channel-Channel <7pF
Channel-chassis <25pF
Insertion Loss ( with 50 Ω termination):
100kHz <0.20dB
1MHz <0.25dB
10MHz 44471A <0.50dB
44471D <1.0 dB
Crosstalk (with 50 Ω termination):
100kHz <-73dB
1MHz <-53dB
10MHz 44471A <-33dB
44471D <-31dB
Module accessories
HP 44481A Screw terminal block for HP 44471A
HP 44481B Screw terminal block for HP 44471D
Note: All voltage and current are in DC or AC RMS if not specified
20-channel General Purpose Relay Module