J30j-21tjs J30j Connector Rectangular Electrical Connector 21 Pins Connctor

J30J-21TJS Circular Connector, J30J Series (GJB)

The J30J-21TJS is a circular electrical connector designed for aerospace, avionics, and industrial platforms. It conforms to J30J (GJB) series requirements. Note: J30J series (GJB) is a distinct standard, separate from MIL-DTL-26482 Series 1 (MS3100/MS3102/MS3106), MIL-DTL-26482 Series 2 (62GB), MIL-DTL-38999 / GJB599, MIL-DTL-27473 (MS27473), MIL-DTL-27484 (MS27484), MIL-DTL-27497 (MS27497), MIL-DTL-27508 (MS27508), JY27466 (GJB), JY3470 (GJB), J29A series (GJB), J36B series (GJB), 8D series, Y50 series, YLH series, ZH8525 series, YH3116 series, YW1 series, and SMA RF coaxial connectors, and is not directly form-fit-function interchangeable with any of those connectors unless confirmed by the supplier.

This connector features shell size 21, "TJS" style code (connector type/design variant — confirm exact meaning with supplier), and socket contacts (S). The design supports EMI shielding and removable crimp contacts.

Product Features

• Conformant to J30J (GJB) circular connector standard
• NOT directly interchangeable with MIL-DTL-26482 Series 1 & 2 (62GB), MIL-DTL-38999 / GJB599 Series III, MIL-DTL-27473 (MS27473), MIL-DTL-27484 (MS27484), MIL-DTL-27497 (MS27497), MIL-DTL-27508 (MS27508), JY27466 (GJB), JY3470 (GJB), J29A series (GJB), J36B series (GJB), 8D series, Y50 series, YLH series, ZH8525 series, YH3116 series, YW1 series, or SMA RF coaxial connectors unless confirmed by supplier
• Shell size 21
• "TJS" style code — confirm exact connector type/design variant meaning with supplier
• Socket contacts (S) for mating with pin-contact connectors
• Normal keying (N)
• EMI shielding, crimp removable contacts

Technical Specifications - J30J-21TJS

Part Number Breakdown

Related options: J30J-21TJP with pin contacts; J30J-19TJS for smaller shell size option; alternative J30J style codes and shell sizes may be available — confirm with supplier. Important: The "TJS" style code meaning requires supplier confirmation. J30J series (GJB), J29A series, J36B series, JY27466 (GJB), JY3470 (GJB), MIL-DTL-26482 Series 1 (MS3100/MS3102/MS3106), MIL-DTL-26482 Series 2 (62GB), MIL-DTL-27473, MIL-DTL-27484, D38999/J599 (MIL-DTL-38999/GJB599), MS27497 (MIL-DTL-27497), MS27508 (MIL-DTL-27508), 8D series, Y50 series, YLH series, ZH8525 series, YH3116 series, YW1 series, and SMA RF coaxial connectors are separate standards/series and are NOT form-fit-function interchangeable unless confirmed by supplier.

Compatible Applications

The J30J-21TJS connector is intended for platforms that require J30J (GJB) compliant interconnects in shell size 21. Typical use cases include:

• Aircraft and helicopter wiring harness interconnects (J30J / GJB standard)
• Ground vehicles and rugged electronic enclosures
• Industrial equipment requiring circular connectors
• Shipboard equipment requiring robust connectors
• Programs that standardize on J30J (GJB) interfaces

Selection Guide

Installation Notes

• Verify shell size 21, "TJS" style code, and socket contacts before mating. Confirm the "TJS" style code meaning with supplier.
• Use the correct crimp tooling for the J30J contact type (confirm contact size with supplier).
• Fully engage the coupling with the mating connector until securely seated.
• Mate only with J30J (GJB) connectors of the same shell size 21 and pin contacts.
• Do NOT attempt to mate with MIL-DTL-26482 Series 1 & 2 (62GB), MIL-DTL-27473, MIL-DTL-27484, D38999/J599 Series III, MS27497, MS27508, JY27466, JY3470, J29A, J36B, 8D, Y50, YLH, ZH8525, YH3116, YW1 series, or SMA RF coaxial connectors — J30J is a different standard and is not interchangeable unless confirmed by supplier.

Why Choose J30J-21TJS

J30J (GJB) Compliance

Choosing J30J-21TJS ensures compliance with J30J (GJB) requirements for programs that mandate this specific standard. The connector geometry supports reliable interconnect with socket contacts for aerospace and industrial systems. Note: this connector is NOT a direct replacement for MIL-DTL-26482 Series 1 & 2 (62GB), MIL-DTL-27473, MIL-DTL-27484, D38999/J599 Series III, MS27497, MS27508, JY27466, JY3470, J29A, J36B, 8D, Y50, YLH, ZH8525, YH3116, YW1 series, or SMA RF coaxial parts. Confirm the "TJS" style code meaning and exact specifications with supplier.

Ordering Information

Order by the designation J30J-21TJS. When requesting a quote, please confirm mating connector part number (pin contact version, e.g., J30J-21TJP), shell finish, contact plating, "TJS" style code meaning, and required quantity.