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J599S5 square-flange receptacle and plug with blue colour bands
Representative image
J599S5 connector next to a J599 Series III connector with the same 09-35 insert arrangement

J599S5 Lightweight Miniature 38999-Type Circular Connectors

Up to 41 % lighter · same insert arrangements as Series III · 1 to 128 contacts

J599S5 combines the small, light shell of GJB 599 Series II with the environmental performance of Series III. It keeps the same insert arrangements, contacts and harness assembly process as J599 Series III, while cutting weight by about 30 % and volume by about 20 % (aluminum shells, same insert arrangement).

Coupling
Triple-start thread
Weight saving
30–41 % vs. Series III (aluminum)
Shell sizes
9 to 25
Contacts
1 to 128
Insert arrangements
95
Temperature
−65 to +200 °C
Contact sizes
22D to 12 (5–23 A)

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Key features

  • About 30 % lighter and 20 % smaller than J599 Series III connectors with the same insert arrangement (aluminum shells)
  • Same insert arrangements, crimp contacts (GJB 1216) and harness assembly process as J599 Series III — no retooling
  • 20G square-flange receptacles use the Series III panel cut-out for drop-in replacement
  • Double-start threaded coupling with anti-decoupling; scoop-proof, keyed and blind-mateable
  • Aluminum, stainless-steel and titanium shells; marine (M) versions pass acid salt spray 240 h and acid atmosphere 28 days
  • Matching straight, 90° and shielded backshells

Specifications

Electrical
ParameterValueCondition
Dielectric withstanding voltage, service rating I1800 V / 1000 V / 1000 VSea level / 21,336 m / 30,480 m altitude, mated
Dielectric withstanding voltage, service rating II2300 V / 1000 V / 1000 VSea level / 21,336 m / 30,480 m altitude, mated
Dielectric withstanding voltage, service rating M1300 V / 800 V / 800 VSea level / 21,336 m / 30,480 m altitude, mated
Dielectric withstanding voltage, service rating N1000 V / 600 V / 600 VSea level / 21,336 m / 30,480 m altitude, mated
Insulation resistance≥ 5000 MΩRoom temperature
Insulation resistance≥ 1000 MΩHigh temperature
Insulation resistance≥ 100 MΩHumidity
Insulation resistance≥ 1000 MΩLow-pressure immersion
Shell-to-shell conductivity1–10 mΩDepends on finish — see finish table
EMI shielding≥ 45–65 dB at 10 GHzDepends on finish — see finish table
Mechanical
ParameterValueCondition
CouplingDouble-start thread with anti-decoupling
Durability500 mating cycles
Shock2940 m/s²
Environmental
ParameterValueCondition
Operating temperature−65 to +200 °C−65 to +175 °C for T and W finishes
Sine vibration10–2000 Hz, 60 g (140–2000 Hz), 3 × 12 hWith temperature cycling
Random vibration50–2000 Hz, 1 g²/Hz (100–2000 Hz), 2 × 8 hAt maximum temperature
Random vibration25–2000 Hz, 5 g²/Hz (100–300 Hz), 2 × 8 hAt ambient temperature
Humidity10 cycles of 24 h
Acid salt spray240 hMarine (M) versions
Acid atmosphere28 daysMarine (M) versions
Mould resistance84 daysMarine (M) versions

GJB 599 — Built on the GJB 599 (MIL-DTL-38999 counterpart) platform, combining the Series II shell size with Series III environmental performance.

Values not listed above — for example vibration level, leak rate or other environmental tests — can be tested to your requirements, including third-party testing. Specifications are subject to change; contact us for the current datasheet.

Weight compared with J599 Series III

Weight of a mated pair (plug + receptacle) with the -35 insert arrangement in each shell size.

Shell sizeJ599S5 aluminumSeries III aluminumSeries III compositeSaving vs. aluminumSaving vs. composite
9 (A)13.1 g22.2 g17.9 g−41.0 %−26.8 %
11 (B)18.2 g30.0 g26.1 g−39.3 %−30.3 %
13 (C)27.0 g43.4 g36.9 g−37.8 %−26.9 %
15 (D)35.1 g56.1 g48.5 g−37.5 %−27.7 %
17 (E)44.3 g70.3 g61.2 g−37.0 %−27.6 %
19 (F)53.5 g84.3 g73.7 g−36.6 %−27.4 %
21 (G)68.4 g100.2 g87.2 g−31.7 %−21.5 %
23 (H)81.3 g117.6 g103.8 g−30.8 %−21.7 %
25 (J)97.3 g139.4 g122.3 g−30.2 %−20.4 %

Series III refers to GJB 599 Series III (J599 Series III) connectors with the same insert arrangement.

Versions

Series codeVersionNotes
J599S5/26Plug-U suffix for the reverse-side plug
J599S5/20Square-flange receptacle
J599S5/20GSquare-flange receptacle, Series III panel cut-outReplaces Series III receptacles without changing the panel
HA (J1784/27)Backshell, straight, non-shielded
HB (J1784/49), HC (J1784/47)Backshells with cable clamp, straight / 90°
J1784/85, J1784/87Shielded backshells, straight / 90°Optional Ti-Ni shape-memory band; J1784/85 is identical to JY599Ⅰ-FJA00
HF, HGShielded backshells, straight / 90°Optional Ti-Ni shape-memory band

Shell materials and finishes

CodeShell materialFinishShell conductivityEMI shieldingTemperatureSalt spray
TAluminum alloyNickel-PTFE2.5 mΩ≥ 50 dB at 10 GHz−65 to +175 °C500 h neutral; 240 h acid
WAluminum alloyOlive-drab cadmium2.5 mΩ≥ 50 dB at 10 GHz−65 to +175 °C500 h neutral; 240 h acid
FAluminum alloyNickel1 mΩ≥ 65 dB at 10 GHz, ≥ 85 dB at 1 GHz−65 to +200 °C48 h neutral
KStainless steelPassivated10 mΩ≥ 45 dB at 10 GHz−65 to +200 °C500 h neutral; 240 h acid
SStainless steelNickel1 mΩ≥ 65 dB at 10 GHz−65 to +200 °C500 h neutral
TATitanium alloyNone10 mΩ≥ 65 dB at 10 GHz−65 to +200 °C500 h neutral; 240 h acid

Contact sizes and current ratings

Contact sizeEngaging diameterContact resistanceContact resistance (hermetic)Current ratingWire size
22D0.76 mm≤ 14.6 mΩ≤ 28 mΩ5 A—
201.02 mm≤ 7.3 mΩ≤ 12.0 mΩ7.5 A—
161.58 mm≤ 3.7 mΩ≤ 8.5 mΩ13 A—
122.41 mm≤ 1.83 mΩ≤ 5 mΩ23 A—

How to order

J599S5/ [type] [class] [finish] [shell] [arrangement] [contact] [key] [options]

Example: J599S5/20MTB35PNV — Square-flange receptacle, marine version, nickel-PTFE finish, shell B (size 11), arrangement 11-35, pin contacts, key position N, fluorosilicone seals

Code segmentOptions
Type
  • 20 Square-flange receptacle
  • 20G Square-flange receptacle with Series III panel cut-out
  • 26 Plug
Class
  • (none) Standard
  • M Marine environment (T, W, K and TA finishes)
Finish
  • T, W, F Aluminum alloy — nickel-PTFE, olive-drab cadmium, nickel
  • K, S Stainless steel — passivated, nickel
  • TA Titanium alloy
Shell
  • A B C D E F G H J Shell size 9, 11, 13, 15, 17, 19, 21, 23, 25
Arrangement
  • e.g. 35 See the insert arrangement table below
Contact
  • P / S Pin / socket
Key
  • N Normal key position
  • A B C D E Alternate key positions
Options
  • U Reverse-side plug (plugs only)
  • V Fluorosilicone (oil-resistant) seals

Coupling threads are imperial UNEF, for example 0.4375-28UNEF-2A for shell size 9 and 1.4375-18UNEF-2A for shell size 25.

Cadmium finish (W) is not RoHS compliant and is supplied on request.

Insert arrangements

95 standard layouts, viewed from the mating face of the pin insert. The arrangement number is written as shell size – layout (for example 25-35). The service rating sets the withstanding voltage (see specifications).

95 layouts

ArrangementContactsContact sizesService rating
9-0333 × size 20I
9-3566 × size 22DM
9-4444 × size 22M
9-9833 × size 20I
11-0222 × size 16I
11-0444 × size 20I
11-0555 × size 20I
11-08a84 × size 20, 4 × size 22DM
11-351313 × size 22DM
11-9866 × size 20I
11-9977 × size 20I
13-0333 × size 16II
13-0444 × size 16I
13-0662 × size 12, 4 × size 20M
13-06A62 × size 16, 4 × size 20M
13-0888 × size 20I
13-08A84 × size 16, 4 × size 20M
13-12A1212 × size 20N
13-16163 × size 16, 13 × size 22DN
13-352222 × size 22DM
13-981010 × size 20I
15-04A44 × size 12M
15-0555 × size 16II
15-06A66 × size 16M
15-13134 × size 16, 2 × size 20, 7 × size 22DM
15-14146 × size 16, 8 × size 22DN
15-15151 × size 16, 14 × size 20I
15-181818 × size 20I
15-191919 × size 20I
15-23233 × size 16, 2 × size 20, 18 × size 22DM
15-32329 × size 20, 23 × size 22DM
15-353737 × size 22DM
15-97124 × size 16, 8 × size 20I
17-0666 × size 12I
17-06C64 × size 12, 2 × size 22I
17-0888 × size 16II
17-14142 × size 12, 4 × size 16, 8 × size 20N
17-19194 × size 16, 11 × size 20, 4 × size 22DM
17-20204 × size 12, 16 × size 22DM
17-262626 × size 20I
17-28A283 × size 12, 25 × size 22DM
17-355555 × size 22DM
17-424242 × size 22M
17-99232 × size 16, 21 × size 20I
19-111111 × size 16II
19-17172 × size 12, 15 × size 20M
19-20208 × size 16, 4 × size 20, 8 × size 22DM
19-22227 × size 12, 15 × size 22DM
19-28282 × size 16, 26 × size 20I
19-30301 × size 16, 29 × size 20I
19-323232 × size 20I
19-356666 × size 22DM
19-456767 × size 22DM
19-9699 × size 12I
21-111111 × size 12I
21-161616 × size 16II
21-242424 × size 20I
21-252525 × size 20I
21-272727 × size 20I
21-357979 × size 22DM
21-39392 × size 16, 37 × size 20I
21-414141 × size 20I
21-61616 × size 16, 55 × size 22DM
21-75A44 × size 12I
23-028585 × size 22M
23-141414 × size 12I
23-212121 × size 16II
23-26268 × size 12, 18 × size 20M
23-323232 × size 20I
23-343434 × size 20I
23-34A344 × size 12, 16 × size 16, 14 × size 22DM
23-35100100 × size 22DM
23-363636 × size 20I
23-535353 × size 20I
23-555555 × size 20I
23-707010 × size 20, 60 × size 22DM
23-868616 × size 20, 70 × size 22DM
23-971616 × size 16I
23-991111 × size 16II
25-02100100 × size 22M
25-04568 × size 16, 48 × size 20I
25-191919 × size 12I
25-242412 × size 12, 12 × size 16I
25-292929 × size 16I
25-35128128 × size 22DM
25-35A3511 × size 12, 24 × size 20M
25-39392 × size 12, 17 × size 16, 20 × size 20M
25-434320 × size 16, 23 × size 20I
25-45458 × size 12, 37 × size 20M
25-616161 × size 20I
25-64a648 × size 16, 40 × size 20, 16 × size 22DM
25-696910 × size 16, 15 × size 20, 44 × size 22DM
25-92924 × size 20, 88 × size 22DM
25-931188 × size 16, 110 × size 22DM
25-94944 × size 12, 8 × size 16, 82 × size 22DM

Typical applications

  • Portable and handheld instruments
  • Robots and automated equipment where weight and panel space are limited
  • Test and measurement systems
  • Rail interior and control electronics
  • Marine and offshore instruments (M versions)

Frequently asked questions

How much lighter is J599S5 than a 38999 Series III-type connector?

A mated pair with the -35 insert arrangement is 30–41 % lighter than a J599 Series III aluminum pair and 20–30 % lighter than a composite pair, depending on shell size. See the weight comparison table.

Can I keep my existing insert arrangement and harness process?

Yes. J599S5 uses the same insert arrangements, crimp contacts and harness assembly process as J599 Series III. Only the shell and coupling are smaller.

Do I need to change my panel cut-out?

Not with the 20G square-flange receptacle, which uses the Series III panel cut-out. The standard 20 receptacle has a smaller cut-out.

Is J599S5 intermateable with 38999 Series III plugs?

No. J599S5 has its own smaller coupling thread, so plugs and receptacles must both be J599S5. The insert arrangements and contacts are the same as Series III.

From sample to production

  1. Send your requirement

    Part number, drawing, pin-out or a short description of your application.

  2. Configuration and quote

    Our engineers match the configuration and reply with a drawing and quotation.

  3. Samples

    Samples are made to your order. Third-party testing to your specification is available on request.

  4. Your approval

    You test the samples in your own equipment and approve them.

  5. Series production

    Production follows the approved sample configuration.

Need a quote or a drawing?

Send your part number, pin-out or drawing. An engineer will reply by email.

Request a quote

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