342
Short locking lever
Long locking lever
To keep pace with the rapid de velopments in
electronics, internal and e xternal connection
systems are naturally increasing in density. At the
same time, labor requirements and overall costs
must be minimized. RA connector s meet all of
these requirements, while pr o viding increased
reliability. These connector s, whose materials,
shapes, dimensions, and surface treatments ha ve
been carefully selected, are based on the latest
technological inf ormation that has been
accumulated and impr o ved o ver year s of
experience in crimping connection tec hnology.
Features–––––––––––––––––––––––
• Twin U-slot
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 1.27mm (.050") 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.
Standards –––––––––––––––––––––
0Recognized E60389
1Certified LR20812
Slot
Beam
supporter
Beam A
Conductor
Double-leaf contact
Beam B
RA CONNECTOR IDC
Disconnectable Insulation displacement connectors for 1.27mm (.050") pitch ribbon cables
2.54mm
(.100") pitch
IDC
343
Receptacle–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Materials
Characteristics
Specifications
Current rating
Voltage rating
Temperature range
Contact resistance
Insulation resistance
Withstanding voltage
Applicable wire
1.0A AC, DC
300V 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/10mΩ max. (gold-plated)
40mΩ max. (tin-plated)
After environmental testing/
15mΩ max. (gold-plated)
50mΩ max. (tin-plated)
5,000M min.
500V AC/5 seconds
AWG #28, 1.27mm(.050") pitch ribbon cable
Receptacle housing
Contact
Cover housing
Strain relief
Phosphor bronze
• Nickel-undercoated, gold-plated
• Copper-undercoated, tin/lead-plated
Glass-filled PBT, UL94V-0, black
Glass-filled PBT, UL94V-0, black
Glass-filled PBT, UL94V-0, black
1.27(.050)X(n-1)= P
Insulator
Conductor
1.27(.050) X n= W
0.9(.035)
(.050±.002)
1.27±0.05pitch
No.of
conductors (n) Dimensional tolerance mm(in.)
PW
10 to 14
16 to 26
34 to 60
±0.18(±.007)
±0.28(±.011)
±0.38(±.015)
±0.3(±.012)
±0.3(±.012)
±0.3(±.012)
Applicable cables
Ribbon cables conforming to the following specifications can be
used with RA connector receptacles. Contact JST for details.
*Contact JST details.
Conductor
Insulator
AWG #28 stranded wire
Construction: 7/0.127mm (.005")dia
Material: Tin-plated annealed copper wire
AWG #28 solid wire
Construction:0.32mm (.013")dia.
Material: Tin-plated annealed copper wire
Soft vinyl chloride
RA CONNECTOR
344
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.
Cir-
cuits
Model No. Dimensions mm(in.)
Q'ty /
box
Type of cover
housing A
No.of
guide
ribs Gold-plated receptacles
With strain relief Without strain
relief
Tin-plated
receptacles
(With strain relief) BC
10
14
16
20
26
40
60
34
50
Long type
Short type
Long type
Long type
Short type
Long type
Short type
Long type
1
1
1
1
1
1
1
0
1
2
2
1
1
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
10.16( .400)
15.24( .600)
17.78( .700)
22.86( .900)
30.48(1.200)
48.26(1.900)
73.66(2.900)
40.64(1.600)
60.96(2.400)
17.30( .681)
22.38( .881)
24.92( .981)
30.00(1.181)
37.62(1.481)
55.40(2.181)
80.80(3.181)
47.78(1.881)
68.10(2.681)
13.00( .512)
18.08( .712)
20.62( .812)
25.70(1.012)
33.32(1.312)
–
43.48(1.712)
51.10(2.012)
–
–
63.80(2.512)
76.50(3.012)
300
200
200
150
150
100
75
75
75
100
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... 0.2micron(8micro-inch) gold-plated
03... 0.4micron(16micro-inch) gold-plated 04... 0.76micron(30micro-inch) gold-plated
90... Tin/lead-plated
S—RA 50 1 T 1 2 00—
Receptacle for long locking lever header Receptacle for short locking lever header
RA CONNECTOR
345
A
JST
4.4(.173)
6.1(.240)
3.4(.134)
A6.1(.240)
3.4(.134)7.0(.276)
A6.1(.240)
3.4(.134)7.0(.276)
Dimensions mm(in.)
Model No.
Strain relief Cover housing
Cir-
cuits Long type Short type A
10
14
16
20
26
34
40
50
60
RA-SR10T-1
RA-SR14T-3
RA-SR16T-1
RA-SR20T-3
RA-SR26T-3
RA-SR34T-3
RA-SR40T-3
RA-SR50T-3
RA-SR60T-1
RA-CH10T
RA-CH14T
RA-CH16T
RA-CH20T
RA-CH26T
RA-CH34T
RA-CH40T
RA-CH50T
RA-CH60T
–
–
–
–
–
RA-CH34S
–
RA-CH50S
RA-CH60S
17.30( .681)
22.38( .881)
24.92( .981)
30.00(1.181)
37.62(1.481)
47.78(1.881)
55.40(2.181)
68.10(2.681)
80.80(3.181)
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
346
Shrouded header ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Materials and Finish
Characteristics
Specifications
Current rating
Voltage rating
Temperature range
Insulation resistance
Withstanding voltage
Applicable PC board
thickness
1.0A AC, DC
300V AC, DC
(including temperature rise in applying electrical current)
-55˚C to+125˚C(gold-plated)
-55˚C to+105˚C(tin-plated)
5,000M Ω min.
500V AC/5 seconds
1.6mm(.063")
Post
Housing
Brass
•Nickel-undercoated
Mating section: Gold-plated
Solder tail: Tin/lead-plated
•Copper-undercoated, tin/lead-plated
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
347
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...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...0.2micron(8micro-inch) gold-plated
13...0.4micron(16micro-inch) gold-plated 14...0.76micron(30micro-inch) gold-plated
90...Tin/lead-plated
HRA 50 1 TD 1 1 10
3.6(.142)
2.54(.100)
2.54(.100) 8.94(.352)
3.0(.118) [27.95(1.100)]
17.5(.689)
5.4(.213) Long locking lever
Polarizing mark
Short locking lever
5.85
(.230) 2.54(.100)
11.0(.433) A 8.9(.350)
B
14.2(.559)
5.4(.213)
[23.05(.907)]
17.5(.689)
3.0(.118)
0.5(.020) 8.94(..352)
2.54(.100)
8.8(.346)
max.
(when unlocked)
Cir-
cuits
Model number Dimensions mm(in.)
Q'ty /
box
Tin-plated.header
(With locking lever) AB
Top entry type Side entry type Top entry type Side entry type
Gold-plated header
(With locking lever)
Type of
locking
lever
No.of
guide
grooves
10
14
16
20
26
50
60
34
40
Long type
Short type
Long type
Short type
Long type
Short type
Short type
Long type
Long type
1
1
1
1
1
2
2
1
1
1
1
RA-H101TD
RA-H141TD
RA-H161TD
RA-H201TD
RA-H261TD
RA-H341TD-2110
RA-H341TD
RA-H401TD-2110
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
10.16( .400)
15.24( .600)
17.78( .700)
22.86( .900)
30.48(1.200)
60.96(2.400)
73.66(2.900)
40.64(1.600)
48.26(1.900)
32.16(1.266)
37.26(1.467)
39.78(1.566)
44.86(1.766)
52.48(2.066)
82.96(3.266)
95.66(3.766)
62.64(2.466)
70.26(2.766)
50
50
50
50
25
25
25
25
25
Top entry typeSide entry type Top entry type
Long locking lever Short locking lever
Note: Headers with locking levers can be used only for receptacle with strain reliefs.
RA CONNECTOR
348348
PC board layout (viewed from component side) ––––––––––––––––––––––––––––––––––––
Note:
1. Tolerances are non-cumulative:±0.05mm(±.002" ) 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
Dimensions mm(in.)
AH
Cir-
cuits BS
10
14
16
20
26
34
40
50
60
10.16( .400)
15.24( .600)
17.78( .700)
22.86( .900)
30.48(1.200)
40.64(1.600)
48.26(1.900)
60.96(2.400)
73.66(2.900)
21.86( .861)
26.94(1.061)
29.48(1.161)
34.56(1.361)
42.18(1.661)
52.34(2.061)
59.96(2.361)
72.66(2.861)
85.36(3.361)
RA CONNECTOR