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" Very responsive and helpful, competitive pricing. Good source! "
July 2025
781420-16
781420-16, 3 W, 0.25 A, 61 Relays, NI 2816A Matrix Switch Card
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
National Instruments 781420-16 Matrix Switch Card
The 781420-16 or NI 2816A is a high density matrix switch card designed for the National Instruments (NI) SwitchBlock system. This card is specifically used to create larger switching matrices by integrating multiple NI 2816 cards in a single chassis. It offers flexibility and scalability that allow users to expand their test configurations easily by adding more cards. This 781420-16 card is suitable for a wide range of applications that involve moderate voltage and current loads with a maximum switching voltage of 100 VDC or 70 VAC and a switching current of up to 0.25 A per channel.
The maximum carry current per channel is 0.3 A which ensures reliable performance under continuous load conditions. The maximum switching power is rated at 3 W per channel and 3 W per crosspoint. This ensures that the card can handle moderate power loads during switching operations.This matrix switch card also boasts low initial DC path resistance (<1 Ω) which ensures minimal signal loss during switching. Over time, the resistance increases slightly but remains manageable (>2 Ω at end-of-life), ensuring long term reliability. In the event of an open channel the resistance exceeds 1 × 10^9 Ω. The card is equipped with reed relays that offer a mechanical relay life of up to 2.5 × 10^8 cycles under no load conditions.
The NI 781420-16 card can drive up to 61 relays simultaneously that makes it suitable for high speed switching applications. The typical relay operate and release times are less than 1 ms for up to 8 relays and less than 2 ms for up to 50 relays. This makes it ideal for automated test systems that require quick switching between multiple signals. From a power consumption perspective each relay on this card consumes 63 mW with a total power consumption limit of 3.9 W per card. The card itself is capable of dissipating up to 3.9 W. The physical characteristics of the card include its lightweight design (320 g) and compact dimensions (11.2 cm x 1.2 cm x 17.1 cm). The card operates in a wide range of environmental conditions with an operating temperature range of 0 °C to 55 °C and a storage range of -20 °C to 70 °C.
| Model | 781420-16 |
|---|---|
| Model Name | NI 2816A |
| Part Type | Matrix Switch Card |
| Maximum Switching Current | 0.25 A (per channel) |
| Maximum Switching Power | 3 W (per channel) |
| Simultaneous Drive Limit | 61 relays |
| Power Consumption per Relay | 63 mW |
| Dimensions | 11.2 cm × 1.2 cm × 17.1 cm (4.4 in. × 0.5 in. × 6.7 in.) |
| Weight | 320 g (11.3 oz) |
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