National Instruments NI I/O Terminal Block Connector - SCB-68

National Instruments

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Product Overview

NI SCB-68 Shielded I/O Terminal Block Connector

Condition: Used, clean, and in good condition, with some cosmetic scratches and blemishes expected with this type of used equipment.

The National Instruments SCB-68 is a high-quality, shielded I/O terminal block connector designed to provide secure and noise-free connections for your NI DAQ devices. This versatile wire terminal block is ideal for a wide range of data acquisition applications, ensuring accurate and reliable signal transmission.

Key Features

  • Screw Terminals: Easy and secure I/O connections with screw terminals.
  • Shielded Design: Reduces noise and improves signal integrity.
  • Cold-Junction Compensation (CJC): Onboard sensor for accurate thermocouple temperature measurements.
  • General-Purpose Breadboard Areas: Flexible use with custom circuitry.


  • Connector Type: 68-pin
  • Physical Dimensions:
    • Width: 18.1 cm (7.1 in.)
    • Depth: 15.2 cm (6.0 in.)
    • Height: 4.5 cm (1.8 in.)
    • Weight: 828 g (1 lb 13 oz)
  • Screw Terminal Wiring Specifications:
    • Minimum wire gauge: 30 AWG
    • Maximum wire gauge: 14 AWG
    • Screw terminal torque: 0.5 to 0.6 N-m (4 to 5 in.⋅lb)
    • Spacing between screw terminals: 5.00 mm (0.19685 in.)
  • Fuse Specifications: 800 mA, 250 VDC, Fast Blow, user-replaceable (Littelfuse P/N 235.800 or equivalent)


The SCB-68 is compatible with a wide range of NI DAQ devices, including:

  • NI 60xxE (formerly E Series)
  • NI 61xx (formerly S Series)
  • NI 62xx (formerly M Series)
  • NI 63xx (formerly X Series)
  • NI 66xx (formerly Timing I/O [TIO] Series)
  • NI 67xx (formerly Analog Output [AO] Series)
  • NI SC Express Models (PXIe-43xx)
  • NI High-Speed Digital I/O (HSDIO) or Digital Instruments (NI 653x)
  • NI Switches Models (NI 25xx)
  • NI R Series Models (NI 78xxR)

Additional Information

The SCB-68 does not offer panel, wall, or DIN rail mounting options. For more detailed information, you can refer to the user manuals and advanced function guides provided by National Instruments.


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Item was as described, and very fast delivery!

5 stars across the board for every seller rating category, and I would buy from this seller again. And per my request, the capacitors were also very well packed for safe delivery.

Bruce B.

Obtainium have been a very helpful seller to me.

In recent times I have had a few items go astray enroute to my address in Australia. This seller was most helpful & encouraging, regarding the onward tracking & eventual safe delivery of this item. This item's arrival in good condition was a joy to me as, it was a rare part that fitted my military comms. Well done seller. I would gladly recommend this seller to all potential buyers.

Jean-Pierre H.

The item was as described and in good and working condition.

Delivered as promised. I would order again if store has anything else I may need. THANK YOU!

Robert L.

Super Duper Fast Shipping.

Item As Described. Packaged Nicely, What A Seller.

Wayne L.

Product shipped quickly and arrived in good shape

J. Fong


The instrument was well packed. It is in extremely good condition. It passed all preliminary tests.

Raymond W.

Item looks better than described, looks brand new and works great.

My old buffer was 50 years old and I sent it to buffer heaven, thanks.

Mike H.

Just what the doctor ordered.

Good supply and price. Thxs

Ralph M.

As advertised. Would buy from again.

S. Scafer

Perfect transaction, pleasure to deal with.

M. Dante