FJ
CONNECTOR
2.0mm
(.079") pitch
Board-to-board connectors
Short type
Features––––––––––––––––––––––––
• Flexible connection absorbs circuit board
misalignment
After the plug and header are mounted on adjoining boards, an
FJ-V type
extended hinged connection between them offers greater
flexibility. The hinge compensates for slight misalignments
between circuit boards to assure a secure connection even if
the boards are out of line up to 1.0mm (.039").
FJ-L type
• Provides a low profile mount and allows
connection after mounting
This compact, low profile design features 2.0mm (.079") pitch
and slim 6.0mm (.236") mounting height. Board-to-board
connection is easier because the connection can be made after
the installation of the connector mounted printed circuit boards.
• Assures a reliable connection
FJ-K type
Superior reliability is assured even when the assembly is
subjected to external stress and vibration. This sturdiness is
due to a secure locking device and the use of JST's high-
retention zigzag fork contacts.
The FJ board-to-board connector absorbs
lateral and longitudinal alignment errors
thanks to an innovative new design that
provides flexible connection between
closely spaced circuit boards. Added
advantages are simplified and less
stringent packaging specifications for
board-to-board connections and a higher
quality end product.
Specifications –––––––––––––––––––
• Current rating: 1.0A AC, DC
• Voltage rating: 50V AC, DC
• Temperature range: -25˚C to +85˚C
(including temperature rise in applying
electrical current)
• Contact resistance: Initial value/40m Ω max.
After environmental testing/80m Ω max.
• Insulation resistance:
500M Ω min.
• Withstanding voltage: 500V AC/minute
• Applicable PC board thickness: 1.6mm(.063")
* Contact JST for details.
Standards ––––––––––––––––––––––
0
1
Recognized E60389
Certified LR20812
319
FJ
CONNECTOR
Plug ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
4.0(.157)
4.0
(.157)
2.0(.079)
10.8(.425)
H JST
Short type
1.4(.055)
1.1(.043)
FJ-V type
2.0(.079)
12.8(.504)
4.8(.189)
J S T
3.0(.118)
2.0
(.079)
3.0 5.5(.217)
(.118)
2.65(.104)
2.0
2.0 (.079)
(.079)
0.6(.024)
A
B
2.65
(.104)
2.0(.079)
2.0(.079)
4.0
(.157)
2.0(.079)
FJ-L type
FJ-K type
10.8(.425)
4.0
(.158)
2.0(.079)
10.8(.425)
3.3(.130)
5.5
(.217)
38.8(1.528)
0.6(.024)
A
B
10.0(.394)
28.8(1.134)
JST
5.5
(.217)
H JST
2.0(.079)
2.0(.079)
A
B
3.0(.118)
2.65
(.104)
2.0(.079)
2.0(.079)
A
B
Model No.
Circuits
Short type
4
5
6
7
8
9
10
11
12
13
14
15
Dimensions mm(in.)
FJ-K type
—
Q'ty / box
Short
type
500
—
250
250
200
200
200
200
100
—
100
—
FJ-V type
—
—
—
—
—
—
—
FJ-L type
—
A
6.0( .236)
8.0( .314)
10.0( .394)
12.0( .472)
14.0( .551)
16.0( .630)
18.0( .709)
20.0( .787)
22.0( .866)
24.0( .945)
26.0(1.024)
28.0(1.102)
B
10.0( .394)
12.0( .472)
14.0( .551)
16.0( .630)
18.0( .709)
20.0( .787)
22.0( .866)
24.0( .945)
26.0(1.024)
28.0(1.102)
30.0(1.024)
32.0(1.260)
FJ-V
type
—
—
—
—
—
—
—
168
—
168
—
168
15.0
2.65
(.104)
24.8(.976)
FJ-L
type
—
250
200
200
200
—
100
—
100
—
—
—
FJ-K
type
—
150
150
100
100
—
100
—
50
—
50
—
4P-FJ
—
05PL-FJ
06PL-FJ
07PL-FJ
08PL-FJ
—
05PK-FJ
06PK-FJ
07PK-FJ
08PK-FJ
—
6P-FJ
7P-FJ
8P-FJ
9P-FJ
10P-FJ
11P-FJ
12P-FJ
—
10PL-FJ
—
10PK-FJ
—
12PK-FJ
—
11PV-FJ
—
12PL-FJ
—
—
—
13PV-FJ
—
14P-FJ
—
14PK-FJ
—
15PV-FJ
Material and Finish
Contact: Phosphor bronze, tin-plated
Housing: Nylon 66, UL94V-0, white
Insulation tape: Acetate, UL510FR
Note: FJ-K types and FJ-V types are not UL recognized nor CSA certified.
320
FJ
CONNECTOR
Receptacle –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Cir-
cuits
1.4(.055)
5.3(.209)
4
5
6
Model No.
04R-FJ
05R-FJ
06R-FJ
07R-FJ
08R-FJ
09R-FJ
10R-FJ
11R-FJ
12R-FJ
13R-FJ
14R-FJ
15R-FJ
Dimensions mm(in.)
A
6.0( .236)
8.0( .315)
10.0( .394)
12.0( .472)
14.0( .551)
16.0( .630)
18.0( .709)
20.0( .787)
22.0( .866)
24.0( .945)
26.0(1.024)
28.0(1.102)
B
10.0( .394)
12.0( .472)
14.0( .551)
16.0( .630)
18.0( .709)
20.0( .787)
22.0( .866)
24.0( .945)
26.0(1.024)
28.0(1.102)
30.0(1.181)
32.0(1.260)
Q'ty / box
500
500
500
500
250
250
250
250
200
200
200
200
6.0(.236)
7
8
9
3.0(.118)
10
11
12
13
14
15
2.0
(.079)
2.0(.079)
A
B
0.6(.024)
2.5
(.098)
Material and Finish
Contact: Phosphor bronze, copper-undercoated, tin/lead-plated
Housing: Nylon 66, UL94V-0, white
PC board layout
(viewed from component side)
––––––––––––––––––––––––––––––––––––
Short type
Receptacle side 7.0±0.5(.276±.020)
Plug side
2.5(.098)
min.
2.65(.104)
min.
2.0±0.05 2.0
(.079±.002) (.079)
min.
2.0
(.079)
min.
±0.5
(±.020)
FJ-V type
Receptacle side 18.0±1.0(.709±.039) Plug side
2.5(.098)
min.
2.65(.104)
min.
2.0±0.05 2.0
(.079±.002) (.079)
min.
2.0
(.079)
min.
±0.5
(±.020)
FJ-L type
+0.39
+1.0
Receptacle side 20.0
0
(.787
0
) Plug side
2.5(.098)
min.
2.65(.104)
min.
FJ-K type
30.0±1.0(1.181±.039)
Receptacle side
Plug side
2.5(.098)
min.
2.65(.104)
min.
2.0±0.05 2.0
(.079±.002) (.079)
min.
±0.5
(±.020)
2.0
(.079)
min.
0.7
+0.1
0
(.028
+.004
)dia.
0
2.0
(.079)
min.
2.0±0.05
(.079±.002)
2.0±0.05 2.0
(.079±.002) (.079)
min.
2.0±0.05
(.079±.002)
2.0±0.05
(.079±.002)
±0.5
(±.020)
0.7
+0.1
0
(.028
+.004
)dia.
0
0.7
+0.1
0
(.028
+.004
)dia.
0
0.7
+0.1
0
(.028
+.004
)dia.
0
0.7
+0.1
0
(.028
+.004
)dia.
0
0.7
+0.1
0
(.028
+.004
)dia.
0
0.7
+0.1
0
(.028
+.004
)dia.
0
0.7
+0.1
0
(.028
+.004
)dia.
0
Note:
1. Tolerances are non-cumulative: ±0.05mm(±.002") for all centers.
2. 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.
Assembly layout ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Short type
[11.2(.441)]
FJ-V type
5.3(.209)
6.0(.236)
2.0
(.079)
6.0(.236)
2.5(.098)
[7.0(.276)]
2.65(.104)
2.5(.098)
18.0(.709)
2.65(.104)
FJ-L type
[26.3(1.035)]
10.8(.425)
6.0(.236)
4.0(.157)
FJ-K type
[36.3(1.429)]
10.8(.425)
5.5(.217)
4.0(.157)
3.0(.118)
5.5
(.217)
2.5(.098)
[20.0(.787)]
2.65(.104)
2.5(.098)
[30.0(1.181)]
2.65(.104)
2.0
(.079)
5.5(.217)
6.0(.236)
2.0±0.05
(.079±.002)
321
stm32/stm8
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