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July 2025
40-140-221
Pickering 40-140-221, 100-Relay, 200-Pin Female LFH-Style Connector, Reed Relay Switch Module
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
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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
Pickering 40-140-221 Reed Relay Switch Module
The Pickering 40-140-221 is a high-density reed relay module designed to meet PXI specifications, providing a high-density selectable switching option for use in automated test systems. The relay module is made with 100 single-pole single-throw (SPST) ruthenium reed relays and it provides a compact solution for applications requiring low-level signal switching with proven and high reliability. Unlike other contacts, those of the reed relay are hermetically sealed and subject to very little wear. The relays in this module are made with ruthenium-sputtered contacts resulting in low contact resistance and operational lifetimes exceeding 1 billion cycles in low-power environments.
The connections of the 40-140-221 are made via a front panel 200-pin female LFH-style connector using Pickering's intermateable equivalent of the now obsolete Molex LFH series. The relay contacts make it suitable for voltages up to 150 VDC, or 100 VAC, currents up to a maximum of 1 A and power up to a maximum of 20 W. The relays demonstrate a fast-switching speed, typically around 250 µs, making it possible to route signals very quickly in time-sensitive applications. The 40-140-221 is designed as a single PCB module, which accepts leaded relays rather than SMT relays, making it affordable to replace defective relays and maintain signal integrity without having to take the whole module apart.
The 40-140-221 is suitable for instrumentation-grade applications, including forming switching networks, multiplexing of I/O ports, or controlling other external devices such as solenoid valves and lamps. It is capable of switching low-level signals, making it useful for metering sensitive measurements in semiconductor testing (wafer-level), aerospace, or industrial automation testing applications. The 40-140-221 is pin-compatible with the existing 40-145 series electro-mechanical relay modules, which allows ease of upgrading and/or system replacement without affecting the overall system specification.
There are a variety of driver compatibility options for the 40-140-221 with Windows, Linux, or Real-time operating systems, and software tool support for VISA, IVI, and kernel drivers that can reduce the effort of programming in a variety of environments, including LabVIEW, Python or MATLAB environments. Pickering eBIRST™ tools can be used to help users isolate faulty relays by testing the system with automatically programmed test sequences.
| Model | 40-140-221 |
|---|---|
| Model Type | PXI High-Density Reed Relay Module |
| Number of Relays | 100 SPST Relay Channels |
| Relay Type | Ruthenium Reed Relays |
| Relay Technology | Hermetically Sealed, Ruthenium-Sputtered Reed Relays |
| Max Switching Voltage | 150 VDC / 100 VAC (Isolated from Mains/Safety Earth) |
| Max Current Rating | 1 A (SPST), 0.25 A (SPDT) |
| Power Handling Capacity | 20 W (SPST/DPST), 3 W (SPDT) |
| Switching Speed | 250 µs Operate/Release Time (Typical) |
| Contact Resistance | <600 mΩ (Initial, 350 mΩ Typical) |
| Front Panel Connector | 200-Pin Female LFH-Style |
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