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Black DB9 female to 9-pin screw-less terminal block CAN terminator, compact 35x43x17 mm

CoolGear

CoolGear TB-DB9TO9CAN DB9 Female to Terminal Block CAN Terminator

SKU CH-D4P3-90BE2

Converts a DB9 serial port to a screw-less 9-pin terminal block with a 120 Ohm CAN bus terminator resistor

  • Product colorBlack
  • Converts DB9 female to 9-pin terminal block for CAN Bus wiring
  • Screw-less spring clamps accept 20-26 AWG wire with 8.5-10.0 mm strip length
  • Built-in 120 Ohm termination resistor between pin 2 and pin 7 for CAN networks
  • Compact 35 x 43 x 17 mm design replaces bulky adapters
  • Operates from -40 °C to 115 °C with 300 V, 2 A terminal block rating

Quick CAN Bus Termination

This CoolGear TB-DB9TO9CAN adapter converts a DB9 male cable into a 9-pin screw-less terminal block with a built-in 120Ohm resistor. It provides the required termination at one end of a CAN network. The compact black housing measures 35 x 43 x 17 mm.

Verify Your Wiring Before Ordering

Confirm your CAN bus uses a DB9 male connector with CAN_H on pin 2 and CAN_L on pin 7. Ensure solid or stranded wire between 20-26 AWG is used with a strip length of 8.5-10.0 mm. The terminal block accepts 300V at 2A while the DB9 side is rated 250V at 1.5A.

Replaces Loose Resistor Splices

This unit removes the need for hand-soldered termination resistors or bulky DB9 breakout boards at the network end. The jump is worth it when you need reliable 120Ohm termination across -40C to 115C with spring-clamp connections that resist vibration.

How it compares

Measured against everything we stock in USB Adapter Cables & Dongles, at today’s prices. Recalculated every night.

Price $29.99
Pricier than about 87% of the 1,430 comparable items (median $14.99).

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Specifications

Product
Brand nameCoolgear
Model nameTB-DB9TO9CAN
Product colorBlack

Questions about this item

Does the package include any cables or mounting hardware, or is it just the terminator itself?

The package contains only the TB-DB9TO9CAN terminal block CAN terminator. No cables, screws or mounting brackets are supplied.

The description mentions RS-422 and RS-485 — does this adapter work for both, or is it only for CAN Bus termination?

The screw-less terminal block carries all nine DB9 signals, so it can pass RS-422 or RS-485 data lines, but the built-in 120Ohm resistor is placed between pin 2 and pin 7 specifically for CAN Bus termination.

What does the 120Ohm termination resistor actually do when the adapter is plugged into a CAN network?

It provides the required end-of-line termination between CAN_H and CAN_L, preventing signal reflections on the bus; every CAN network needs two such terminators, one at each end.

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