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1
To keep pace with the rapid developments in
electronics, internal and external connection
systems are naturally increasing in density. At the
same time, labor requirements and overall costs
must be minimized. RA connectors meet all of
these requirements, while providing increased
reliability. These connectors, whose materials,
shapes, dimensions, and surface treatments have
been carefully selected, are based on the latest
technological information that has been
accumulated and improved over years of
experience in crimping connection technology.
Features––––––––––––––––––––––––
• Twin U-slot ID section
The twin U-slot is the most
important IDC element in
JST’s RA connectors. As
shown in the figure, wire
conductors are connected
between the slots of U-shaped
parallel beams, and the
distance between each adjacent
pair of beams is designed to be
one third of the pitch of wire
strands.
• Two-die processing and selective gold plating
Two precision dies are used to blank and form the contacts.
After the first die blanks the contacts, they are gold plated at
crucial points. Then, the contacts are formed by the second
die. This eliminates unnecessary gold-plating and overall
costs are minimized. This innovation is another example of
our industry-leading technology.
• Selective gold-plated posts
Header posts are also selectively gold-plated. While square wire
material is used for production of conventional posts in loose
pieces, continuous flat strip is used for production of our post in
chain form. This allows selective gold-plating and provides cost
reduction.
• Cost-efficient
JST’s unique technology allows it to produce connectors that
are extremely reliable and cost-efficient.
• Interchangeable cables and connectors
RA connectors fit commercially available 1.27 mm pitch flat
ribbon cables. A variety of ribbon cables are offered according to
the purpose. Moreover, the RA series receptacles and header
are interchangeable with the similar type of connectors
commercially available. Contact JST before procuring cables
and other manufacturer’s mating connectors.
* Refer to "General Instruction and Notice when using
Terminals and Connectors" at the end of this catalog.
* Contact JST for details.
* Compliant with RoHS.
Standards ––––––––––––––––––––––
0
Recognized E60389
1
Certified LR20812
RA CONNECTOR IDC
Disconnectable Insulation displacement connectors for 1.27mm pitch ribbon cables
2.54mm
pitch
IDC
Beam
supporter
Slot
Beam B
Beam A
Conductor
Double-leaf contact
Short locking lever
Long locking lever
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Receptacle–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Materials
Characteristics
Specifications
Current rating
Voltage rating
Temperature range
Contact resistance
Insulation resistance
Withstanding voltage
Applicable wire
1.0 A AC, DC
300 V AC, DC
(including temperature rise in applying electrical current)
-55˚C to +125˚C (gold-plated)
-55˚C to +105˚C (tin-plated)
Initial value/10 mΩ max. (gold-plated)
40 mΩ max. (tin-plated)
After environmental tests/
15 mΩ max. (gold-plated)
50 mΩ max. (tin-plated)
5,000 MΩ min.
500 VAC/5 seconds
AWG #28, 1.27 mm pitch ribbon cable
Receptacle housing
Contact
Cover housing
Strain relief
Phosphor bronze
• Nickel-undercoated, selective gold-plated
• Copper-undercoated, tin-plated (reflow treatment)
Glass-filled PBT, UL94V-0, black
Glass-filled PBT, UL94V-0, black
Glass-filled PBT, UL94V-0, black
1.27x(N-1)= P
Insulator
Conductor
1.27xN= W
0.9
1.27±0.05 (pitch)
No.of
conductors (n)
Dimensional tolerance (mm)
PW
10 to 14
16 to 26
34 to 60
±0.18
±0.28
±0.38
±0.3
±0.3
±0.3
Applicable cables –––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ribbon cables conforming to the following specifications can be
used with RA connector receptacles. Contact JST for details.
*Contact JST for details.
Conductor
Insulator
AWG #28 stranded wire
Construction: 7/0.127 mm dia.
Material: Tin-plated annealed copper wire
AWG #28 solid wire
Construction: 0.32 mm dia.
Material: Tin-plated annealed copper wire
Soft vinyl chloride
RA CONNECTOR
Note: N --- Number of circuits
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Model number identification ––––––––––––––––––––––––––––––––––––––––––––––––
Note:
The standard gold-plated type is identified by the suffix number [-1200], but this
suffix number is usually omitted. The gold-plated type identified by [-0200]
is indicated by [-0] for short. Other types must be identified by the full code
number. Special types do not conform to the above coding system.
10.4 <Note 1>
3.73.4
7
16.0 <Note 2>
Polarizing
identification
Guide rib
Strain relief
Cover housing
Receptacle
housing
4
1 6.1
2.54
2.54
A
B
C
4
1
6.1
Polarizing
identification
B
A
Guide rib
7 3.4
10.4
RA-S101T
RA-S141T
RA-S161T
RA-S201T
RA-S261T
RA-S341T
RA-S401T
RA-S500T
RA-S501T
RA-S502T
RA-S601T
RA-S602T
RA-S101T-0
RA-S141T-0
RA-S161T-0
RA-S201T-0
RA-S261T-0
RA-S341S-0
RA-S341T-0
RA-S401T-0
RA-S502S-0
RA-S500T-0
RA-S501T-0
RA-S502T-0
RA-S602S-0
RA-S601T-0
RA-S602T-0
RA-S101T-1290
RA-S141T-1290
RA-S161T-1290
RA-S201T-1290
RA-S261T-1290
–
RA-S341T-1290
RA-S401T-1290
–
RA-S500T-1290
RA-S501T-1290
RA-S502T-1290
–
RA-S601T-1290
RA-S602T-1290
–
–
–
<Note 1>: Height without strain relief <Note 2>: Height with strain relief
• Series name
• Product name: Receptacle
• Number of circuits: 10, 14, 16, 20, 26, 34, 40, 50, 60
• Number of guide ribs: 10 to 40 circuits ... 1
50 circuits ... 0, 1, 2 60 circuits ... 1, 2
• Connection method: T ... Through type
S ... Short lock through type
• With or without strain relief: 0 ... Without 1 ... With
• Contact material: 2 ... Phosphor bronze for spring
• Surface finish: 00... Gold-plated (flash)
02... 0.2 micron gold-plated 03... 0.4 micron gold-plated
04... 0.76 micron gold-plated 90... Tin-plated (reflow treatment)
RA - S 50 1 T - 1 2 00
Receptacle for long locking lever header
Receptacle for short locking lever header
RA CONNECTOR
RoHS compliance Tin-plated products display (LF)(SN) on a label.
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Strain relief and cover housing ––––––––––––––––––––––––––––––––––––––––––––––
Strain relief
Cover housing
For long locking lever header
Indicate the Model No. shown below when ordering strain relief
and cover separately.
Cover housing
For short locking lever header
RA CONNECTOR
RoHS compliance
Note: 1. Color: Black
Note: 2. When ordering Strain relief or Cover housing only, refer to the above
Note: 2. Model Nos.
A
JST
A
4.4
6.1
3.4
10
14
16
20
26
34
40
50
60
6.1
3.47
Strain relief
RA-SR10T-1
RA-SR14T-1
RA-SR16T-1
RA-SR20T-3
RA-SR26T-3
RA-SR34T-3
RA-SR40T-3
RA-SR50T-3
RA-SR60T-1
Model No.
Cover housing
RA-CH10T
RA-CH14T
RA-CH16T
RA-CH20T
RA-CH26T
RA-CH34T
RA-CH40T
RA-CH50T
RA-CH60T
Short typeLong type
–
–
–
–
–
RA-CH34S
–
RA-CH50S
RA-CH60S
Dimensions
(mm)
A
17.30
22.38
24.92
30.00
37.62
47.78
55.40
68.10
80.80
A
6.1
3.47
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Shrouded header –––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Materials and Finish
Characteristics
Specifications
Current rating
Voltage rating
Temperature range
Insulation resistance
Withstanding voltage
Applicable PC board
thickness
1.0 A AC, DC
300 V AC, DC
(including temperature rise in applying electrical current)
-55˚ C to+125˚ C (gold-plated)
-55˚ C to+105˚ C (tin-plated)
5,000 MΩ min.
500 VAC/5 seconds
1.6 mm
Post
Housing
Brass
• Nickel-undercoated
Mating part; gold-plated
Solder tail; tin-plated (reflow treatment)
• Copper-undercoated, tin-plated (reflow treatment)
Glass-filled PBT, UL94V-0, black
With long locking lever With short locking lever
Note: Contact JST for details.
Top entry type
Side entry type
RA CONNECTOR
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Model number identification ––––––––––––––––––––––––––––––––––––––––––––––––
Note:
The standard gold-plated type is identified by the suffix number [-1110], but this
suffix number is usually omitted. Other types must be identified by the full
code number. Special types do not conform to the coding system in the left.
• Series name
• Product name: Header
• Number of circuits: 10, 14, 16, 20, 26, 34, 40, 50, 60
• Number of guide grooves: 10 to 40 circuits...1
50 and 60 circuits...1, 2
• PC board mounting method: TD...Top entry
SD...Side entry
• Type of locking lever: 0...Without locking lever
1...Long locking lever
2...Short locking lever
• Post material: 1...Brass
• Surface finish:10...Gold-plated (flash) 12...0.2 micron gold-plated
13...0.4 micron gold-plated 14...0.76 micron gold-plated
90...Tin-plated (reflow treatment)
RA H 50 1 TD 1 1 10
3.6
2.54
2.54
8.94
3
(27.95)
17.5
5.4
Long locking lever
Polarizing mark
Short locking lever
5.85 2.54
11
A
8.9
B
14.2
5.4
(23.05)
17.5
3
0.5
8.94
2.54
8.8max.
(when unlocked)
RA-H101TD
RA-H141TD
RA-H161TD
RA-H201TD
RA-H261TD
*RA-H341TD-2110
RA-H341TD
RA-H401TD
*RA-H501TD-2110
*RA-H501TD
RA-H502TD
*RA-H601TD-2110
*RA-H601TD
RA-H602TD
RA-H101SD
RA-H141SD
RA-H161SD
RA-H201SD
RA-H261SD
—
RA-H341SD
RA-H401SD
—
*RA-H501SD
RA-H502SD
—
*RA-H601SD
RA-H602SD
RA-H101TD-1190
RA-H141TD-1190
RA-H161TD-1190
RA-H201TD-1190
RA-H261TD-1190
—
RA-H341TD-1190
RA-H401TD-1190
—
*RA-H501TD-1190
RA-H502TD-1190
—
*RA-H601TD-1190
RA-H602TD-1190
RA-H101SD-1190
RA-H141SD-1190
RA-H161SD-1190
RA-H201SD-1190
RA-H261SD-1190
—
RA-H341SD-1190
RA-H401SD-1190
—
*RA-H501SD-1190
RA-H502SD-1190
—
*RA-H601SD-1190
RA-H602SD-1190
Top entry typeSide entry type
Top entry type
Long locking lever Short locking lever
RoHS compliance This product displays (LF)(SN) on a label.
Note: 1.Headers with locking levers can be used only for receptacle with strain reliefs.
2.*Marked products are not CSA approved.
RA CONNECTOR
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PC board layout (viewed from component side) ––––––––––––––––––––––––––––––––––––
φ
±
φ
±
±
±
φ
φ
±
±
Note:
1. Tolerances are non-cumulative: ±0.05 mm for all centers.
Hole dimensions differ according to the kind of PC board and piercing
method. The dimensions above should serve as a guideline.
Contact JST for details.
2. The mounting screw holes are not required for standard headers.
3. This is normally No. 1 pin position.
Top entry type Side entry type
RA CONNECTOR
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