Anonymous Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Keysight 44477A
Keysight/Agilent 44477A, 7 SPDT, 60 W dc, DAQ, Form C Relay Module
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
✔ Free Domestic Ground Shipping
✔ NIST Calibration Available
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Keysight/Agilent 44477A Form C Relay Module
The Keysight 44477A is a Form C relay module that provides seven separate SPDT (Single Pole Double Throw) channels for general-purpose switching and external device control. The module is designed to drive programmable attenuators and non-HP coaxial switches. The 44477A module is capable of handling various input characteristics. It supports a maximum voltage of 250 V dc, 250 V ac rms, and 350 V ac peak. The module can carry a maximum current of 2 A DC or 2 A AC RMS that ensures it can manage substantial power loads. The maximum power capacity of the Keysight 44477A Form C Relay Module is 60 W dc and 500 VA ac. This ensures compatibility with diverse applications while maintaining system integrity.
The Keysight 44477A relay module maintains minimal noise and enhances performance in sensitive applications with a thermal offset of less than 3 µV. It offers high DC isolation with values exceeding 10^11 Ω for both channel to channel and open channel configurations. This level of isolation ensures high reliability. The AC isolation and performance of the 44477A module are also exceptional. The module exhibits an insertion loss of less than 0.30 dB at 100 kHz that is ideal for high-fidelity signal applications. The insertion loss increases slightly to under 0.35 dB at 1 MHz, and at 10 MHz, it is kept under 0.90 dB.
The Keysight 44477A Form-C relay module excels in maintaining signal integrity across different channels in terms of crosstalk. The crosstalk is below -73 dB at 100 kHz, which further improves system reliability. The crosstalk is under -53 dB at 1 MHz, and at 10 MHz, it is less than -33 dB. These low crosstalk values ensure that signals from different channels do not interfere with each other. The relay module is designed to operate within a temperature range of 0 to +40 degrees centigrade. The installation of this module must be carried out by a trained professional. It is an essential tool for those seeking a high-quality relay module for controlling external devices in a complex system
| Model | Keysight 44477A |
|---|---|
| Manufacturer | Keysight/Agilent |
| Part Type | Form-C Relay Module |
| Number of Channels | 7 |
| Initial Closed Channel Resistance | < 1 Ω |
| Thermal Offset (per channel) | < 3 µV |
| Relay Cycle Counter | Yes |
| Connection Type | T (Terminal) |
| Maximum Current (per channel) | 2 Amp |
Associated part numbers for Keysight 44477A:
Keysight 44477A PDF Manuals
Delivery:
Eligible returns may be accepted within 30 days at Apex Waves’ discretion. A 25% restocking fee applies; non-refundable and built-to-order products are excluded.
Payment:
Receive Price & Availability Today!
Ask About Our Tiered Calibration Levels
Option & Modules:
Confirm Your Requirements or Versions
Cost & Lead Time Available Upon Request for Service
Repair Evaluation: $150
Common Typos:
Why Buy From Apex Waves:
