High Performance Microminiature Circular Connectors
SR38 Series
Mating Condition
Feb.1.2019 Copyright 2019 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
φ5
φ5.9
Panel
5.4
15.5
■Features
1. High density, microminiature design
2. Simple wire installation
·With a nominal outside diameter of 5.3mm, the
SR38 is designed to save space and fits well in
tight spaces.
·The simple lock is designed to resist external forces,
such as vibration. Shielding function is also provided.
The plug is easy to assemble and no special tools
are required.
The receptacle is a PCB dip type.
■Product Specifications
Ratings
Rated Current
0.5A
Operating Temperature Range
−15 to 60ç
Rated Voltage
AC30V, DC42V
Storage Temperature Range
−10 to 60ç
Items
1. Contact Resistance
2. Insulation Resistance
3. Withstanding Voltage
Specifications
30mø max.
100Mø min.
No flashover or breakdown
4. Vibration Resistance
No electrical discontinuity of 10µs or greater
5. Shock
No electrical discontinuity of 10µs or greater
6. Durability
Contact Resistance : 50mø max.
7. Temperature Cycles
Insulation Resistance : 100Mø min.
8. Humidity Resistance
Insulation resistance :
1Mø min. (in high humidity)
10Mø min. (after drying)
Conditions
Measured with DC 100mA
Measured with DC 100V
AC 100V for 1 minute
Tested 3 directions with 10 to 55Hz/cycle,
vibration width 0.75mm, 2 hours each.
Tested 3 directions with acceleration 490m/s2
and duration 11ms, 3 times each.
100 mating cycles
-25ç : 30minutes ⇒ Ordinary temperature:
10 to 15minutes ⇒ 70ç :
Left for 30minutes ⇒ Ordinary temperature:
10 to 15minutes, Total 5 cycles.
Left at temperature 40ç and humidity 90 to 95%
for 96 hours.
■Materials / Finish
Items
Outer Case
Plug
Insulator
Male Contact
Outer Shell
Receptacle
Insulator
Female Contact
Materials
Brass
Polypropylene resin
(Black)
PBT resin (Black)
Phosphor bronze
Brass
Phosphor bronze
PBT resin (Black)
Phosphor bronze
Finish
Tin plated
Remarks
−
−
UL94V-0
−
Silver plating
Nickel plating
Tin plated
−
Silver plating
UL94V-0
−
−
−
UL94V-0
−
In cases where the application will demand a high level of reliability, such as automotive,
please contact a company representative for further information.
2015.11w
1
SR38 Series●High Performance Microminiature Circular Connectors
■Product Number Structure
SR38 - 4 P - 3 P (**)
❶
❷ ❸
❹ ❺
❻
❶ Model Name: SR38 Series
❷ Shell size: This describes the outer diameter of the case on the mating plug
❸ Shell Type
P: Plug
R: Receptacle
❹ No. of Contacts:
Feb.1.2019 Copyright 2019 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
❺ Contact Gender
P: Male Contact
S: Female contact
❻ Other Specifications: A two digit number will denote specific product changes
5.9
0.4
φ3.5
4.2
14.5
Part No.
HRS No.
SR38-4P-3P(71)
103-0372-2 71
(Applicable cable)
φ5.3
φ3.7
■Plug
When this connector is assembled with the applicable cable, the clamp
will perform well between 10 to 20N. If you plan on using cable other than
the type we recommended, please check with your cable manufacturer to
make sure it meets our requirements. This is especially important when
the cable is being flexed as it may affect the performance of the connector.
φ5
■Receptacle
1.9
0.65±0.05
0.25±0.05
Part No.
HRS No.
103-0373-5 71
0
0.65±0.05
As shown in the figure below, pinch the panel and PCB for fixation.
Position the PCB, receptacle and panel together, as shown in the
figure below.
Also, make sure no loads are applied to the contact dip.
Make sure that no direct force is placed onto the receptacle.
.05
.5
5
4.5
Ø
0
4-Ø
Ø3.8
(Ground location)
1.65±0.05
Dip Post Arrangement
2
BInstallation of the Receptacle
＋ 0
.1
＋0
0
1.35
0.8
SR38-4R-3S(71)
BDip Post Arrangement and
Panel Installation Dimensions
0.75±0.05
5.4
＋0.1
0
Panel
Recommended panel
thickness: 0.8mm
＋0.05
0
PCB
Panel Cutout
SR38 Series●High Performance Microminiature Circular Connectors
BContact Arrangement
1
3
Reference 1.This diagram displays a view of the receptacle from the mating side
(plug termination side)
2.The inner diameter of the solder pot is 0.5mm.
2
BTermination Procedure (Plug side)
Feb.1.2019 Copyright 2019 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
Large, rectangular slot
Heat shrink tubing
Plug unit shell cover
Small, concave recess
Plug body
Outer shell cover
Large, concave recess
Plug Unit
Small lug
Plug unit shell
Large lug
Small rectangular slot
Soldering point
Hinge
Shield Wire or drain wire
Wire grip portion or strain relief
Cable
1. Solder the prepared wires of the cable to the plug unit.
(When using a soldering iron, apply heat of no more than 280°C for a maximum of 3 seconds.)
2. Place the heat shrink tubing over the soldered termination area and apply heat. Make sure that the heat
shrink tubing does not contact the plug body. Doing so will affect the diameter of the plug body causing it
to not fit properly in the plug unit shell
3. Solder the shield or drain wire to the bottom of the connector shell as shown in the diagram.
4. Install the cable into the wire grip portion of the plug unit shell.
5. Install the large and small lugs of the of the plug unit into the matching rectangular slots in the shell. Then
install the plug unit shell cover.
6. Match the corresponding large and small recesses on the outer shell cover with the large and small lug
parts on the plug body. Then close the outer shell cover and snap shut.
3
Feb.1.2019 Copyright 2019 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
SR38 Series●High Performance Microminiature Circular Connectors
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INDIA:
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HIROSE ELECTRIC SINGAPORE PTE. LTD.
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Phone : +65-6324-6113
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Fax : +65-6324-6123
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HIROSE ELECTRIC MALAYSIA PTE. LTD.
1-10-07, Suntech @ Penang Cybercity (1164),Lintang
Mayang Pasir 3,11950, Bayan Baru, Penang, Malaysia.
Phone : +604-619-2564
Fax : +604-619-2574
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®
4
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Unit No-403, 4th Floor, No-84, Barton Centre, Mahatma
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http://www.hirose-connectors.com
The characteristics and the specifications contained herein are for reference purpose. Please refer to the latest customer drawings prior to use.
The contents of this catalog are current as of date of 11/2015. Contents are subject to change without notice for the purpose of improvements.
