# Difference between 66102-9 and 66103-4

**URL:** <https://forum.digikey.com/t/difference-between-66102-9-and-66103-4/69939>\
**Category:** Interconnect\
**Tags:** contacts, connectors-interconnects, part-comparison\
**Created:** [June 22, 2026, 2:43pm UTC](https://forum.digikey.com/t/difference-between-66102-9-and-66103-4/69939 "2026-06-22T14:43:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![esme](https://avatars.discourse-cdn.com/v4/letter/e/54ee81/32.png) [@esme](https://forum.digikey.com/u/esme)\
**Post date:** [June 22, 2026, 2:43pm UTC](https://forum.digikey.com/t/difference-between-66102-9-and-66103-4/69939/1 "2026-06-22T14:43:56Z")

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Could you please tell me if there is any difference between the two parts?

66103-4 A1342TR-ND and **[A1342CT-ND](https://www.digikey.co.za/en/products/detail/te-connectivity-amp-connectors/66102-9/524419)** 66102-9

To me, they seem identical. Please advise.

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**Author:** ![Steven\_14444](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/steven_14444/32/47465_2.png) [@Steven\_14444](https://forum.digikey.com/u/Steven_14444)\
**Post date:** [June 22, 2026, 2:52pm UTC](https://forum.digikey.com/t/difference-between-66102-9-and-66103-4/69939/2 "2026-06-22T14:52:40Z")

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The difference between the parts 66103-4 and 66102-9 is the packaging from TE. The part [66102-9](https://www.digikey.co.za/en/products/detail/te-connectivity-amp-connectors/66102-9/524419) comes on a reel and [66103-4](https://www.digikey.co.za/en/products/detail/te-connectivity-amp-connectors/66103-4/19391) comes loose in bag.