Y3 Series Circular Connector

  1. With the characteristics of straight plug type locking and straight pull type separation, locking reliable, easy to use
  2. There are two types of socket sealing: common sealing and glass sealing
  3. The mounting mode is flange disc type and cable type
  4. Widely used in various electronic devices between the circuit connection
  5. The implementation of enterprise standards: Q/Ag1.003-2002


Y3 series Circular Hermetic Electrical Connector​

Environmental Specifications

Operating temperature -55 to +125°C Sinusoidal Vibration 50 Hz ~ 2000 Hz, 196 m/s2
Relative humidity 95% at 40°C Shock

980 m/s2

1200 m/s2 (Y3-24TK/ZJLM)

Constant acceleration 980 m/s2
Working pressure 101.3kPa ~ 6.67kPa Mechanical life 500 cycles

Electrical specifications

  • Contact resistance and rated current

Contact size


Contact resistance (mΩ) Rated Current (A)
Normal seal Glass sintering
Φ0.8 ≤ 10 ≤ 15 3
Φ1.0 ≤ 5 ≤ 10 5
  • Rated voltage, withstand voltage and insulation resistance
Working Environment Withstand Voltage (Vrms) Insulation Resistance (MΩ)
Normal Temperature and pressure 500 ≥ 500
High humidity ≥ 20
High temperature ≥ 100
Low air pressure: 4.39kpa 200
  • Mechanical specifications
Housing Material Aluminum alloy, stainless steel Insulator Material Thermoplastic
Housing Plating Electroless Nickel plating Contact plating Gold plating

Order mark

Y3 -19 Z J B M
Series No.
  • Y3
Contact number
  • 19, 21, 24, 31
connector type
  • T-Plug,
  • Z-Receptacle,
Contact type
  • J- Pin,
  • K-Socket (Jack)
Receptacle mounting type
  • L-Cable type,
  • B-Rectangular flange type,
  • H-Round flange type
Receptacle sealing type
  • M- Ordinary rubber sealing,
  • R- glass sintering sealing

Note: Mounting type and Sealing type are only for receptacles, Plugs don’t have these two signs.


Contact arrangement

Pin dia 1 0.8
Sign Y3 contact arrangement e1 - Y3 Series Circular Connector Y3 contact arrangement e2 - Y3 Series Circular Connector


Y3 contact arrangement 19pin - Y3 Series Circular Connector Y3 contact arrangement 21pin - Y3 Series Circular Connector Y3 contact arrangement 24pin - Y3 Series Circular Connector Y3 contact arrangement 31pin - Y3 Series Circular Connector
19-Φ1 21-Φ0.8 24-Φ0.8 31-Φ0.8



Y3 Drawings - Y3 Series Circular Connector Y3 Drawings Rectangular flange receptacle - Y3 Series Circular Connector Y3 Drawings Circular Flange receptacle - Y3 Series Circular Connector
Rectangular flange receptacle Circular Flange receptacle


Part No. A B øC M øD
Y3-19TK 13
Y3-19ZJLM 30 24 20×0.75 13
Y3-19ZJBM 30 24 20×0.75
Y3-19ZJHLM 30 20×0.75 13
Y3-19ZJHM 30 20×0.75
Y3-19ZJHR 28
Y3-19ZJHR11 25
Y3-21T(T2) 10(6.5)
Y3-21ZJBM 26 20 16×1
Y3-21ZJHM 25 16×1
Y3-21ZJHM11 21 16×1
Y3-24TK 13
Y3-24ZJLM 30 24 20×0.75 13
Y3-24ZJBM 30 24 20×0.75
Y3-24ZJHR 28
Y3-24ZJHR11 25
Y3-24ZJLR(BR) 30 24 20×0.75 (13)
Y3-31TK 13
Y3-31ZJLM 30 24 20×0.75 13
Y3-31ZJBM 30 24 20×0.75
Y3-31ZJHLM 30 20×0.75 13
Y3-31ZJHM 30 20×0.75
Y3-31ZJHR 24.5

Operation Instruction

  1. The two parts of the electrical connector plug and receptacle are connected by straight plug, which is separated by direct dialing. After the head base is inserted, the anti-loose ring is inserted; if necessary, the fuse can be fixed on the anti-loose ring.
  2. When soldering the contacts, pay attention to the contact number. The power of the soldering iron used should be preferably not more than 45W, and the soldering time of the single contact should not be more than 5s.
  3. When the electrical connector needs to be cleaned, anhydrous ethanol should be used. The use of polar solvents such as acetone or banana water for cleaning is strictly prohibited.
  4. The electrical connector is forbidden to be energized before it is locked. In the case of load, separation is prohibited.
  5. When connecting the electrical connector, care should be taken to avoid loosening of the tail cover and damage to the cable core.
  6. When the electrical connector head and the seat are separated, cover the dust cover separately.
  7. After the wire is soldered, the cable cover of the cable cover must be clamped and fixed. If it is to be used in the open air for a long time, the right end of the cable cover should be sealed with a suitable seal.