JM
CONNECTOR
2.54mm
pitch
Jumper connectors
Standard type
Features ––––––––––––––––––––––––
• Stackable
This connector is stackable in both directions.
• Low profile
This connector measures 8.5 mm high after mounting.
The receptacle is 6.0 mm high.
Grooved type
• High reliability
Each contact makes an electrical connection with its mating
header post at two points. This redundancy ensures continuity
even under adverse environmental conditions.
• Through style
The receptacle allows the mating post to pass completely
through and measures 6.0 mm in height. It is suited for various
headers having posts measuring 6.0 mm or more in height.
• Provides convenient test points
This is a two-circuit jumper connector
suited for changing or switching circuits
on printed circuit boards without using
DIP switches. It is compact and light, thus
can be mounted on printed circuit boards
without interfering with the placement of
other components. The connector is easy
to use, low in cost, and has a wide range
of applications in industrial and consumer
products.
Provides extra test points where circuits can be checked without
the disassembly of components.
Specifications –––––––––––––––––––
Standard type
• Current rating: 3 A AC, DC
• Voltage rating: 250 V AC, DC
• Temperature range: -55˚C to +125˚C
(including temperature rise in applying
electrical current)
• Contact resistance: Initial value/ 20 mΩ max.
After environmental tests/ 30 mΩ max.
• Insulation resistance: 1,000 MΩ min.
• Withstanding voltage: 800 VAC/minute
• Applicable PC board thickness: 1.2 to 1.6 mm
• Number of circuits: RE header 2 to 30
RF header 2 to 60 (even numbers only)
* Refer to "General Instruction and Notice when using
Terminals and Connectors" at the end of this catalog.
* Contact JST for details.
* Compliant with RoHS.
Grooved type
Standards ––––––––––––––––––––––
0
Recognized E60389
1
1
Certified LR20812
JM
<Standard type>
5.08
2.54
CONNECTOR
Receptacle –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Type
Model No.
JM-2BK-61
2.5
<Grooved type>
4.18
Finish
Nickel-undercoated,
Mating part; gold-plated 0.1 micron min.
Nickel-undercoated,
Mating part; gold-plated 0.4 micron min.
Nickel-undercoated,
Mating part; gold-plated 0.76 micron min.
Copper-undercoated,
tin-plated (reflow treatment)
Nickel-undercoated,
Mating part; gold-plated 0.1 micron min.
Color Q'ty /box
Black
Blue
Red
Natural
White
5,000
JM-2BL-63
Standard
JM-2R-64
JM-2W-96
Grooved
*JM-T2W-61B
6
6
Material
Contact: Phosphor bronze
Housing: PBT, UL94V-0
2.54
2.1
2.54
5.08
RoHS compliance
Note: 1. *Marked product is not approved by UL/CSA .
2. Contact JST for special products.
Header ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
RE header
0.64
2.54
1.27
(2.66)
RF header
0.64
2.54
1.27
6.2
2.54
(1.83)
2.54
6
Gold-plated product
Model No.
Wafer
RE-H( )2TD-1130
RF-H( )2TD-1130
RoHS compliance
PBT, UL94V-0,
black
Tin-plated product
Material
Post
Brass
Finish
Nickel-undercoated,
gold-plated
Model No.
Wafer
RE-H( )2TD-1190
Material
Post
Brass
RF-H( )2TD-1190
RoHS compliance
This product displays (LF)(SN) on a label.
PBT, UL94V-0,
black
Copper-undercoated,
tin-plated (reflow treatment)
Note: 1. A two-digit number (RE header: 02 to 30 or RF header: 02 to 60 even numbers only) representing the number of cicuits should be inserted in (*).
2. Special headers and side-entry type RE and RF headers are also available. For details, refer to pages RE series and RF series.
PC board layout
(viewed from soldering side)
and Assembly layout –––––––––––––––––––
With RE header
φ
1
+0.1
0
With RF header
1.27min.
φ
1
+0.1
0
2.54
±0.05
1.27min.
1.83min.
2.54
±0.05
1.46 min.
<Standard type>
<Grooved type>
<Standard type>
<Grooved type>
8.54
8.54
8.54
2.54
3.4
(2.66)
(2.66)
6.2
6.2
Note: 1. Tolerances are non-cumulative: ±0.05 mm for all centers.
Note:
2. Hole dimensions differ according to the type of PC board and piercing method. The dimensions above should serve as a guideline.
Contact JST for details.
3.4
3
3
8.54
3.4
3
2.54
6
Finish
2
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