J599S5 Lightweight Miniature 38999-Type Circular Connectors
Up to 41 % lighter · same insert arrangements as Series III · 2 to 128 contacts
XY2 Lightweight Micro Circular Connectors
≈ 30 % lighter, 50 % smaller than Series III · threaded · 9 shell sizes
XY2 is our lightweight micro circular connector. Compared with a GJB 599 Series III connector with the same layout, it is about 30 % lighter and 50 % smaller, while keeping triple-start threaded coupling, EMI shielding and comparable marine, rain, salt-spray, vibration and shock performance. An integrated banding platform lets you terminate the cable shield without a backshell.
- Coupling
- Triple-start thread
- Weight saving
- ≈ 30 % vs. Series III
- Shell sizes
- 8 to 23 (9 sizes)
- Insert arrangements
- 29
- Contact sizes
- 23, 20HD, 16, 12 (5–23 A)
- Temperature
- −65 to +200 °C
Request a quoteRequest drawingDownload datasheet (PDF)PDF, 268 KB
Key features
- About 30 % lighter and 50 % smaller than a GJB 599 Series III connector with the same layout
- Triple-start threaded coupling with anti-decoupling; scoop-proof, six key positions
- EMI/RFI shielding ≥ 55 dB at 10 GHz on all finishes
- Integrated banding platform for shield termination with a steel band — no backshell needed, about 10 mm shorter
- Size 23 and 20HD contacts carry the same current as 22D and 20 with the same crimp process
- Six finishes, including nickel-fluorocarbon (T) with 240 h acid salt spray
- Removable crimp contacts; PCB pins for receptacles; fluorosilicone seals for fluid immersion
Specifications
| Parameter | Value | Condition |
|---|---|---|
| Dielectric withstanding voltage, size 12 and 16 | 1800 / 1800 Vrms | Sea level, mated / unmated |
| Dielectric withstanding voltage, size 12 and 16 | 850 / 550 Vrms | 12,192 m, mated / unmated |
| Dielectric withstanding voltage, size 12 and 16 | 450 / 250 Vrms | 21,336 m, mated / unmated |
| Dielectric withstanding voltage, size 20HD | 1000 / 1000 Vrms | Sea level, mated / unmated |
| Dielectric withstanding voltage, size 20HD | 750 / 450 Vrms | 12,192 m, mated / unmated |
| Dielectric withstanding voltage, size 20HD | 550 / 300 Vrms | 21,336 m, mated / unmated |
| Dielectric withstanding voltage, size 23 | 750 / 750 Vrms | Sea level, mated / unmated |
| Dielectric withstanding voltage, size 23 | 400 / 250 Vrms | 12,192 m, mated / unmated |
| Dielectric withstanding voltage, size 23 | 400 / 150 Vrms | 21,336 m, mated / unmated |
| Insulation resistance | ≥ 5000 MΩ | Room temperature |
| Insulation resistance | ≥ 1000 MΩ / ≥ 100 MΩ | High temperature / humidity |
| Shell-to-shell conductivity | 2.5–10 mΩ | Depends on finish |
| EMI shielding | ≥ 55 dB at 10 GHz |
| Parameter | Value | Condition |
|---|---|---|
| Coupling | Triple-start thread, anti-decoupling | |
| Durability | 500 mating cycles | |
| Shock | 300 g | |
| Sine vibration | 10–2000 Hz, 60 g (140–2000 Hz), 3 × 12 h | With temperature cycling |
| Random vibration | 50–2000 Hz, 1 g²/Hz (100–2000 Hz), 2 × 8 h | At maximum temperature |
| Random vibration | 25–2000 Hz, 5 g²/Hz (100–300 Hz), 2 × 8 h | |
| Damp heat, cyclic | 10 cycles × 24 h | |
| Operating temperature | −65 to +200 °C | −65 to +175 °C for T and W finishes |
GJB 599 Series III (comparison basis) — Weight, size and environmental comparison made with GJB 599 Series III connectors of the same layout.
Parameters not listed above — for example vibration level, leak rate or other environmental tests — can be tested to your requirements, including third-party testing.
Weights
Weight in grams, pin / socket version.
| Arrangement | Plug | Square-flange receptacle |
|---|---|---|
| 08-04 | 8.55 / 9.06 | 6.80 / 7.42 |
| 08-06 | 8.65 / 9.17 | 5.67 / 7.52 |
| 08-07 | 7.52 / 7.93 | 5.77 / 6.28 |
| 08-23 | 7.73 / 8.24 | 5.97 / 6.59 |
| 09-01 | 11.23 / 11.74 | 7.00 / 7.62 |
| 09-10 | 11.02 / 11.95 | 6.80 / 7.73 |
| 10-02 | 13.70 / 14.52 | 9.17 / 9.99 |
| 10-13 | 13.08 / 13.80 | 8.55 / 9.27 |
| 10-28 | 15.66 / 16.89 | 9.37 / 10.51 |
| 11-04 | 15.86 / 16.89 | 10.61 / 11.64 |
| 11-19 | 14.73 / 15.86 | 9.48 / 10.61 |
| 12-02 | 17.92 / 19.26 | 12.26 / 13.60 |
| 12-05 | 18.13 / 19.57 | 12.57 / 14.01 |
| 12-26 | 16.27 / 17.92 | 10.82 / 12.36 |
| 15-02 | 21.32 / 22.97 | 17.61 / 19.26 |
| 15-07 | 22.56 / 25.24 | 18.85 / 21.53 |
| 15-37 | 20.70 / 23.69 | 17.00 / 19.98 |
| 15-202 | 21.42 / 23.38 | 17.72 / 19.67 |
| 18-12 | 31.62 / 35.33 | 27.60 / 31.42 |
| 18-55 | 28.12 / 31.62 | 24.10 / 27.60 |
| 18-204 | 29.87 / 33.99 | 25.85 / 30.08 |
| 18-205 | 30.18 / 34.30 | 26.16 / 30.39 |
| 18-235 | 29.87 / 33.68 | 27.19 / 31.31 |
| 19-07 | 28.74 / 31.93 | 25.85 / 29.05 |
| 19-14 | 33.89 / 33.58 | 30.90 / 30.59 |
| 19-85 | 27.40 / 32.03 | 24.51 / 29.15 |
| 19-204 | 27.19 / 31.21 | 24.31 / 28.43 |
| 23-12 | 41.41 / 46.56 | 37.80 / 43.05 |
| 23-130 | 38.93 / 46.25 | 35.43 / 42.85 |
Versions
| Series code | Version | Notes |
|---|---|---|
| XY2/2 | Plug | |
| XY2/3 | Square-flange receptacle | M2 screws for shells 8–12, M3 for 15–23 |
| XY2/0 | Square-flange receptacle, improved | Mounting holes for M3 screws |
| XY2/1 | Jam-nut receptacle | Hex nut with lockwire hole (H) or spanner nut (S) |
| …-1… / …-2… | Rear configuration: banding platform (1) or backshell thread (2) | |
| XY2/26, 26A, 26B | Cable-clamp backshells: straight, short straight, 90° | |
| XY2/22, 24 | Shielded banding backshells: straight, 90° | |
| XY2/14, 16 | Shielded cable-clamp backshells: straight, 90° | |
| XY2/32, 33 | Protective caps for plug / receptacle |
Shell materials and finishes
| Code | Shell material | Finish | Shell conductivity | EMI shielding | Temperature | Salt spray |
|---|---|---|---|---|---|---|
| T | Aluminum alloy | Nickel-fluorocarbon | 2.5 mΩ | ≥ 55 dB at 10 GHz | −65 to +175 °C | 500 h neutral; 240 h acid |
| W | Aluminum alloy | Olive-drab cadmium | 2.5 mΩ | ≥ 55 dB at 10 GHz | −65 to +175 °C | 500 h neutral; 240 h acid |
| F | Aluminum alloy | Nickel | 2.5 mΩ | ≥ 55 dB at 10 GHz | −65 to +200 °C | 48 h |
| K | Stainless steel | Passivated | 10 mΩ | ≥ 55 dB at 10 GHz | −65 to +200 °C | 500 h neutral; 240 h acid |
| S | Stainless steel | Nickel | 2.5 mΩ | ≥ 55 dB at 10 GHz | −65 to +200 °C | 500 h |
| TA | Titanium alloy | None | 10 mΩ | ≥ 55 dB at 10 GHz | −65 to +200 °C | 500 h neutral; 240 h acid |
Contact sizes and current ratings
| Contact size | Engaging diameter | Contact resistance | Current rating | Wire size |
|---|---|---|---|---|
| 23 | 0.686 mm | ≤ 14.6 mΩ | 5 A | AWG 22–26; insulation Ø 0.76–1.22 mm |
| 20HD | 1.02 mm | ≤ 7.3 mΩ | 7.5 A | AWG 20–24; insulation Ø 1.02–1.78 mm |
| 16 | 1.58 mm | ≤ 3.7 mΩ | 13 A | AWG 16–20; insulation Ø 1.65–2.77 mm |
| 12 | 2.41 mm | ≤ 1.83 mΩ | 23 A | AWG 12–14; insulation Ø 2.46–3.61 mm |
How to order
XY2/ [type] - [rear end] [finish] [shell] - [arrangement] [contact] [key] [nut] [V]
Example: XY2/2-2T08-07SA — Plug, backshell thread, aluminum nickel-fluorocarbon, shell 08, arrangement 08-07, socket contacts, key A
| Code segment | Options |
|---|---|
| Type | |
| Rear configuration | |
| Finish | |
| Shell | |
| Arrangement | |
| Contact | |
| Key | |
| Nut (jam-nut receptacles) | |
| V |
Second example: XY2/1-1F11-13PAH — jam-nut receptacle, banding platform, aluminum nickel, shell 11, arrangement 11-13, pin contacts, key A, hex nut.
Insert arrangements
29 standard layouts, viewed from the mating face of the pin insert. The arrangement number is written as shell size – layout (for example 25-35).
29 layouts
| Arrangement | Contacts | Contact sizes |
|---|---|---|
| 8-04 | 4 | 4 × size 23 |
| 8-06 | 6 | 6 × size 23 |
| 8-07 | 7 | 7 × size 23 |
| 8-23 | 3 | 3 × size 20HD |
| 9-01 | 1 | 1 × size 12 |
| 9-10 | 10 | 10 × size 23 |
| 10-02 | 2 | 2 × size 16 |
| 10-13 | 13 | 13 × size 23 |
| 10-28 | 8 | 8 × size 20HD |
| 11-04 | 4 | 4 × size 16 |
| 11-19 | 19 | 19 × size 23 |
| 12-02 | 2 | 2 × size 12 |
| 12-05 | 5 | 5 × size 16 |
| 12-26 | 26 | 26 × size 23 |
| 15-02 | 2 | 2 × size 12 |
| 15-07 | 7 | 7 × size 16 |
| 15-37 | 37 | 37 × size 23 |
| 15-202 | 22 | 20 × size 23, 2 × size 16 |
| 18-12 | 12 | 12 × size 16 |
| 18-55 | 55 | 55 × size 23 |
| 18-204 | 42 | 2 × size 16, 40 × size 23 |
| 18-205 | 36 | 4 × size 16, 32 × size 23 |
| 18-235 | 35 | 35 × size 20HD |
| 19-07 | 7 | 7 × size 12 |
| 19-14 | 14 | 14 × size 16 |
| 19-85 | 85 | 85 × size 23 |
| 19-204 | 32 | 4 × size 12, 28 × size 23 |
| 23-12 | 12 | 12 × size 12 |
| 23-130 | 130 | 130 × size 23 |
Typical applications
- Drones and robotics
- Portable and wearable electronics
- Rail and transit electronics
- Test and measurement equipment
- Marine electronics
Frequently asked questions
How much lighter is XY2 than a 38999 Series III connector?
Compared with a GJB 599 Series III connector with the same layout, XY2 is about 30 % lighter and 50 % smaller. With the integrated banding platform, the axial length is about 10 mm shorter because no backshell is needed.
Do XY2 connectors mate with Series III connectors?
XY2 has its own miniaturized interface. To use it with J599 Series III or other connectors, send us the part numbers. We can provide corresponding configurations and samples for your mating test.
What are size 23 and 20HD contacts?
Size 23 carries 5 A like size 22D, and 20HD carries 7.5 A like size 20, with the same crimp process, in a denser layout.
Selection guides
Related series
XY1 Push-In Miniature Circular Connectors, IP67
IP67 · push-in quick connect · ≈ 50 % lighter than Series III
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.