J599S5 Lightweight Miniature 38999-Type Circular Connectors
Up to 41 % lighter · same insert arrangements as Series III · 2 to 128 contacts
J599S Subminiature Circular Connectors (38999 Series III Style)
Shells 3, 5, 7 · threaded self-locking · 22D and 26 contacts
J599S is a high-density subminiature circular connector based on the GJB 599 Series III design, for very small spaces under heavy mechanical load. It has three shell sizes (3, 5 and 7), removable crimp contacts in sizes 22D and 26, and triple-start threaded self-locking coupling on shells 5 and 7.
- Coupling
- Triple-start thread (shells 5, 7)
- Shell sizes
- 3, 5, 7
- Insert arrangements
- 6
- Contact sizes
- 22D, 26 (2–5 A)
- Temperature
- −65 to +200 °C
- Mating cycles
- 500
Request a quoteRequest drawingDownload datasheet (PDF)PDF, 236 KB
Key features
- Subminiature, high-density design: light and strong
- Three shell sizes: 3, 5 and 7
- Triple-start threaded coupling with self-locking (shells 5 and 7)
- Removable crimp contacts; scoop-proof and keyed
- Fluid-resistant version (V) for fuels, lubricants and coolants
- Aluminum or stainless-steel shells
Specifications
| Parameter | Value | Condition |
|---|---|---|
| Dielectric withstanding voltage | 1000 Vrms | Size 22D, sea level |
| Dielectric withstanding voltage | 400 Vrms | Size 26, sea level |
| Insulation resistance | ≥ 5000 MΩ | Room temperature |
| Parameter | Value | Condition |
|---|---|---|
| Durability | 500 mating cycles | |
| Shock | 300 g, 3 ms | |
| Random vibration | 25–2000 Hz, 5 g²/Hz (100–300 Hz), 2 × 8 h | 49.5 g rms |
| Fluid immersion | Fuels, lubricants, coolants | V version |
| Mold resistance | 28 days | |
| Coupling thread | M7 × 0.5, M8.6 × 0.5, M9.6 × 0.5 | Shells 3, 5, 7 |
GJB 599 Series III (base design) — Subminiature version based on the Series III design.
Parameters not listed above — for example vibration level, leak rate or other environmental tests — can be tested to your requirements, including third-party testing.
Versions
| Series code | Version | Notes |
|---|---|---|
| J599S/26 | Plug | |
| J599S/20 | Square-flange receptacle |
Shell materials and finishes
| Code | Shell material | Finish | Shell conductivity | EMI shielding | Temperature | Salt spray |
|---|---|---|---|---|---|---|
| F | Aluminum alloy | Nickel | — | — | −65 to +200 °C | 48 h |
| K | Stainless steel | Passivated | — | — | −65 to +200 °C | 500 h |
| S | Stainless steel | Nickel | — | — | −65 to +200 °C | 500 h |
Contact sizes and current ratings
| Contact size | Engaging diameter | Contact resistance | Current rating | Wire size |
|---|---|---|---|---|
| 22D | 0.762 mm | ≤ 14.6 mΩ | 5 A | AWG 22–26 (0.13–0.33 mm²) |
| 26 | 0.508 mm | ≤ 26 mΩ | 2 A | AWG 28–30 (0.05–0.08 mm²) |
How to order
J599S/ [type] [finish] [shell] [arrangement] [contact] [key] [V]
Example: J599S/20K0504SAV — Square-flange receptacle, stainless steel passivated, shell 5, arrangement 05-04, socket contacts, key A, fluid-resistant
| Code segment | Options |
|---|---|
| Type | |
| Finish | |
| Shell | |
| Arrangement | |
| Contact | |
| Key | |
| V |
Second example: J599S/26F0335PN — plug, aluminum nickel, shell 3, arrangement 03-35, pin contacts, key N.
Insert arrangements
6 standard layouts, viewed from the mating face of the pin insert. The arrangement number is written as shell size – layout (for example 25-35).
6 layouts
| Arrangement | Contacts | Contact sizes |
|---|---|---|
| 3-35 | 3 | 3 × size 22D |
| 3-02 | 2 | 2 × size 22D |
| 5-35 | 3 | 3 × size 22D |
| 5-04 | 4 | 4 × size 22D |
| 7-35 | 3 | 3 × size 22D |
| 7-05 | 5 | 5 × size 26 |
Typical applications
- Drones and small robots
- Compact sensors and cameras
- Test probes and instruments
- Industrial automation
Frequently asked questions
How small is J599S?
J599S shells are sizes 3, 5 and 7, with coupling threads from M7 × 0.5 to M9.6 × 0.5 — for sensors and devices where even a size 9 connector is too large.
Can I get other layouts?
The catalog lists 6 layouts with 2 to 5 contacts. Other layouts can be made to your requirements.
Related series
JYS High-Density Subminiature Bayonet Connectors
Bayonet · shells 2 and 6 · size 22D contacts
From sample to production
Send your requirements
Part number, drawing, pin-out or a short description of your application.
Configuration and quote
Our engineers match the configuration and reply with a drawing and quotation.
Samples
Samples are built to order. The minimum order quantity is 10 pieces, and samples and production orders each take 4–8 weeks. Third-party testing to your specification is available on request.
Your approval
You test the samples in your own equipment and approve them.
Series production
Production follows the approved sample configuration, with machining, molding, plating and assembly in our own Shenyang factory.
Need a quote or a drawing?
Send your part number, pin-out or drawing. Every inquiry is acknowledged by email within 1 business day, and an engineer follows up with a matched configuration, drawing or quotation.
J599SRequest a quote