The Agilent/Keysight 44471D is a 20-channel relay module for electronic test and measurement applications. Each channel implements a single-pole single-throw (SPST) configuration to switch Device Under Test power, actuate external relays, or construct attenuators. The module delivers low thermal characteristics suitable for independent signal switching in demanding test environments.
Technical Specifications
Channel Configuration
• 20 channels, single-wire design
• Single-pole single-throw (SPST) relay per channel
• Screw terminal block connections
Per-Relay Switching Capability
• Maximum voltage: 250 V
• Maximum current: 1 A
• Maximum power: 60 W or 125 VA
• Closed channel resistance: < 1 Ω
Isolation Performance
• DC isolation (open channel, channel-to-channel): 10¹¹ Ω
• AC isolation (open channel, channel-to-channel, one channel closed): < 7 pF
Physical
• Ship weight: Approximately 5 lbs
– Key Features
• Low thermal characteristics enable independent signal switching without crosstalk
• Excellent DC isolation (10¹¹ Ω) minimizes leakage in sensitive measurements
• Minimal closed-channel resistance (< 1 Ω) preserves signal integrity
• Screw terminal design simplifies field wiring and reconfiguration
– Typical Applications
• Device under test power control
• External relay actuation
• Attenuator construction
• Low-channel count switching requiring higher per-relay capability
– Compatibility & Integration
The 44471D integrates with the 44481B module and is compatible with 3499A/B/C mainframes. It serves applications requiring elevated switching capability compared to N2260A or N2261A alternatives.
