0.5mm/1mm Pitch, 2.55mm Height, 125℃ Heat Resistant FPC/FFC Connectors
FH28K Series
Robust Lock Design
Retention tabs prevent the
actuator from coming off.
Dec.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
Each contact is attached to the
actuator and provides support.
Fig.1
■Features
1. 125℃ heat resistance
The FPC positioning mechanism and FPC tabs help to
guide and hold the FPC prior to engaging the actuator
The 125℃ heat resistance design makes FH28K
ideal for use in applications requiring high heat
resistance such as automotive.
2. Highly reliable connection and robust design
High pin count connectors require a reinforced connector
body and high FPC/FFC retention. With its unique FPC/
FFC positioning mechanism and robust design that
prevents accidental disengagement, the FH28K Series
achieves high connection reliability.
3. Flip lock provides superior operability
The flip lock design makes it easier to engage/disengage
the actuator and reduces the required force needed to
operate. A clear tactile click is delivered upon the
successful completion of the mating process. (Fig.1)
4. Enhanced FPC/FFC retention force
Compared to Hirose's 0.5mm pitch connector the FH12
Series, vertical retention force for the FPC/FFC is 2.5 times
stronger and horizontal retention force is 2 times stronger.
*Horizontal retention force value achieved by use of FPC
positioning tabs. Use of FPC without positioning tabs results
in a horizontal retention value equivalent to FH12 Series.
Fig.2
Can also be used with straight sided, non-tabbed
FPC/FFC
5. Compatible with 0.3mm FPC/FFC thickness
Compatible with easy to manufacture and easy to
insert 0.3mm thick FPC/FFC.
6. No pattern prohibited area on bottom of
connector (Overmolding Design)
The bottom of the connector is fully covered with resin,
eliminating contact exposure and any restrictions on
PCB pattern routing for enhanced design freedom.
7. Pick & Place Mounting
Offered in tape and reel packaging that is compatible
with automatic machine mounting. (2,000pcs/reel)
8. Halogen-free
All materials and substances used to produce this
product comply with Halogen-free standards.
*Defined according to IEC61249-2-21. Br : 900ppm maximum,
Cl : 900ppm maximum, Br+Cl : 1,500ppm maximum
Fig.3
9. Multiple packing options
The standard packaging is 2,000pcs/reel, but FH28K
is also offered in 500pcs/reel. (The outer diameter of
the reel will be Ø330mm in this case.)
In cases where the application will demand a high level of reliability, such as automotive,
please contact a company representative for further information.
2021.3⑤
1
FH28K Series●0.5mm/1mm Pitch, 2.55mm Height, 125℃ Heat Resistant FPC/FFC Connectors
■Product Specifications
Rated Current 0.5A
Rated Voltage 50Vrms AC
Ratings
Adaptive FPC/FFC
Contact Specifications
Storage Temperature Range
-10 to +50ç (Note 2)
Storage Humidity Range
Relative humidity 90% or less (no condensation)
t=0.3±0.05 Gold plating 125ç Heat Resistant FPC/FFC
Item
Dec.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
Operating Temperature Range
-40 to +125ç (Note 1)
Operating Humidity Range
Relative humidity 90% or less (no condensation)
Specification
Conditions
1. Insulation Resistance
Minimum of 500Mø
Measured with 100V DC
2. Withstanding Voltage
No flashover or breakdown
150Vrms AC is applied for 1 min.
3. Contact Resistance
Maximum of 50mø
*Includes FPC/FFC conductor resistance
Measured at 1mA (DC or 1,000Hz)
4. Mating Durability
Contact Resistance : Maximum of 50mø
No damaged, cracked or looseness of parts
20 mating cycles
5. Vibration Resistance
No electrical discontinuity of 1µs or greater
Contact Resistance : Maximum of 50mø
No damages, cracks and looseness of parts
Frequency : 10 to 55Hz
Single amplitude of 0.75mm for 10 cycles in 3 axial
directions
6. Shock Resistance
No electric discontinuity of 1µs or greater
Contact Resistance : Maximum of 50mø
No damaged, cracked or looseness of parts
Acceleration of 981m/s2, 6ms duaration, sine half-wave
waveform 3 cycles in each of the 3 axis
7. Humidity Resistance
of Steady State
Contact Resistance : Maximum of 50mø
Insulation Resistance : Minimum of 50Mø
No damaged, cracked or looseness of parts
96 hours at temperature : 60ç and humidity : 90 to 95%
8. Temperature Cycles
Contact Resistance : Maximum of 50mø
Insulation Resistance : Minimum of 50Mø
No damaged, cracked or looseness of parts
Temperature : -40/+15 to +35/+125/+15 to +35ç
Time : 30/2 to 3/30/2 to 3 minutes
1000 cycles
9. Solder Heat
Resistance
Should not have external deformity or loose
parts
Reflow : according to the Recommended Temperature Profile
Hand solder : 350±10ç for 5 seconds
Note 1 : Includes temperature rise caused by current flow.
Note 2 : The term "storage" here refers to products stored for a long period prior to board mounting and use. The operating temperature
and humidity range covers the non-energized condition of connectors after board mounting and the temporary storage.
■Materials / Finish
Component
Insulator
Contact
Metal fitting
Materials
Color/Finish
LCP
LCP
Copper Alloy
Brass
Gray
Black
Partially Gold Plated
Pure Tin Plating
Remarks
UL94V-0
-----------------------------
■Product Number Structure
Refer to the chart below when determining the product specifications from the product number.
Please select from the product numbers listed in this catalog when placing orders.
FH 28K H - 50 (25) S B - 0.5 SH (98)
❶
❷
❸
❹
❺
❻
❼
❶ Series Name : FH
❷ Series No. : 28K
❸ None : Standard type
H : Space-saving type
❹ Standard type : The number of positions
Eccentric type : Number of positions in 0.5mm housing
❺ Standard type : Blank
Eccentric type : Number of positions
2
❽
❾
❻ Contact arrangement : Single (single row)
❼ Eccentric direction : Blank…Standard type (without eccentricity)
B…Eccentric type (contacts on the opposite side of polarity mark)
❽ Contact Pitch : 0.5mm, 1mm
❾ Mounting direction , SH...SMT horizontal mounting type
Specification : Blank …Standard, 2,000 pcs/reel
(98)…500 pcs/reel
FH28K Series●0.5mm/1mm Pitch, 2.55mm Height, 125℃ Heat Resistant FPC/FFC Connectors
■Connector Dimensions
0.5mm Pitch Product
A±0.1
Contact No.1
0.5±0.1
(1.9)
(0.2)
2 3
0.05MAX
)
6°
(11
ａ
0
Dec.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
E±0.3
5.7±0.2
+0.1
0.1MAX
C 0
D±0.2
8
ａ
(1.3)
(4.15)
(4.95)
1.2±0.2
ｂ
4.5±0.2
2 3
(5.4)
B±0.2
HRS Mark
No. of Pos.
2.55±0.2
Cav No.
Polarity Mark
1.3±0.2
＊＊
△ Ａ
0.05MAX
0
0.1MAX
0.7±0.2
Notes 1
2
3
4
5
6
7
The dimension in parentheses are for reference.
Lead co-planarity including retention tabs shall be 0.1 max.
Indicates dimensions from surface b.
Delivered in tape and reel packages. See the packaging specifications for details.
Note that preventive hole for sink mark or slits could be added for improvement.
Black spots may appear on the molded plastic however this does not represent a quality issue.
This product satisfies halogen free requirements defined as 900ppm maximum chlorine, 900ppm maximum bromine,
and 1500ppm maximum total of chlorine and bromine.
8 FH28KH has retention tabs extending outward from the connector body as shown in the diagram.
■Connector Dimensions Table
Part No.
FH28K-10S-0.5SH(**)
Unit : mm
HRS No.
No. of Pos.
A
B
C
D
E
586-1876-0 **
10
4.5
9.9
5.57
9.58
6.5
FH28K-15S-0.5SH(**)
586-1883-0 **
15
7
12.4
8.07
12.08
6.5
FH28K-20S-0.5SH(**)
586-1879-0 **
20
9.5
14.9
10.57
14.58
6.5
FH28K-28S-0.5SH(**)
586-1880-0 **
28
13.5
18.9
14.57
18.58
6.5
FH28K-30S-0.5SH(**)
586-1877-0 **
30
14.5
19.9
15.57
19.58
6.5
FH28K-40S-0.5SH(**)
586-1878-0 **
40
19.5
24.9
20.57
24.58
6.5
FH28K-45S-0.5SH(**)
586-1884-0 **
45
22
27.4
23.07
27.08
6.5
FH28K-50S-0.5SH(**)
586-1875-0 **
50
24.5
29.9
25.57
29.58
6.5
FH28K-55S-0.5SH(**)
586-1881-0 **
55
27
32.4
28.07
32.08
6.5
FH28K-60S-0.5SH(**)
586-1872-0 **
60
29.5
34.9
30.57
34.58
6.5
FH28K-64S-0.5SH(**)
586-1882-0 **
64
31.5
36.9
32.57
36.58
6.5
FH28K-68S-0.5SH(**)
586-1873-0 **
68
33.5
38.9
34.57
38.58
6.5
FH28K-74S-0.5SH(**)
586-1885-0 **
74
36.5
41.9
37.57
41.58
6.5
FH28KH-80S-0.5SH(**)
586-1874-0 **
80
39.5
44.9
40.57
45.7
6
3
FH28K Series●0.5mm/1mm Pitch, 2.55mm Height, 125℃ Heat Resistant FPC/FFC Connectors
■Connector Dimensions
1mm Pitch Product
(2.7)
1±0.1
A±0.1
(0.2)
(3.2)
(1.9)
Contact No.1
＊＊
HRS Mark
2.55±0.2
1.3±0.2
Cav No.
Polarity Mark
B±0.2
2 3
6.5±0.3
5.7±0.2
)
6°
(11
Dec.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
0.05MAX
0
0.1MAX
+0.1
(1.3)
(4.15)
(4.95)
C 0
D±0.2
1.2±0.2
Notes 1
2
3
4
5
6
7
ｂ
4.5±0.2
(5.4)
△ Ａ
2 3
0.05MAX
0
0.1MAX
0.7±0.2
The dimension in parentheses are for reference.
Lead co-planarity including retention tabs shall be 0.1 max.
Indicates dimensions from surface b.
Delivered in tape and reel packages. See the packaging specifications for details.
Note that preventive hole for sink mark or slits could be added for improvement.
Black spots may appear on the molded plastic however this does not represent a quality issue.
This product satisfies halogen free requirements defined as 900ppm maximum chlorine, 900ppm maximum bromine,
and 1500ppm maximum total of chlorine and bromine.
■Connector Dimensions Table
Unit : mm
Part No.
HRS No.
No. of Pos.
A
B
C
D
FH28K-20(10)SB-1SH(**)
−−−
10
9
14.9
10.57
14.58
FH28K-30(15)SB-1SH(**)
−−−
15
14
19.9
15.57
19.58
FH28K-40(20)SB-1SH(**)
−−−
20
19
24.9
20.57
24.58
FH28K-50(25)SB-1SH(**)
−−−
25
24
29.9
25.57
29.58
FH28K-60(30)SB-1SH(**)
−−−
30
29
34.9
30.57
34.58
FH28K-64(32)SB-1SH(**)
−−
−
32
31
36.9
32.57
36.58
FH28K-68(34)SB-1SH(**)
−−
−
34
33
38.9
34.57
38.58
Note : Contact positions without HRS No. are currently planned for development.
Please contact Hirose for detailed information about product variation.
4
FH28K Series●0.5mm/1mm Pitch, 2.55mm Height, 125℃ Heat Resistant FPC/FFC Connectors
BRecommended PCB Layout
BRecommended Metal Mask Dimensions
for 0.5mm Pitch Products
for 0.5mm Pitch Products
Recommended metal mask thickness : t= 0.15
1.3±0.1
Ｘ
nX
0.3±0.03
0.05 X
(Connector Outside)
0.5
A
2.2±0.1
2.2±0.1
F±0.1
G±0.1
nX
0.05 Y
F±0.1
G±0.1
Standard Type（FH28K）
Standard Type（FH28K）
Recommended metal mask thickness : t= 0.15
nX
0.05 X
(Connector Outside)
1±0.1
Ｘ
0.3±0.03
A
Y
0.25±0.03
0.5
nX
0.05 Y
1.8±0.1
4.2±0.1
(0.5)
A
0.5
4.2±0.1
1.3±0.1
Contact No.1
1.8±0.1
Dec.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
Y
0.25±0.03
0.5
3.9±0.1
(0.5)
A
3.9±0.1
1.3±0.1
Contact No.1
F±0.1
F±0.1
G±0.1
G±0.1
Space-saving Type（FH28KH）
Space-saving Type（FH28KH）
Note : 'n' indicates the number of positions.
BRecommended PCB Layout and Metal Mask Dimensions
Part No.
Unit : mm
HRS No.
No. of Pos.
A
F
G
FH28K-10S-0.5SH(**)
586-1876-0 **
10
4.5
7
10.6
FH28K-15S-0.5SH(**)
586-1883-0 **
15
7
9.5
13.1
FH28K-20S-0.5SH(**)
586-1879-0 **
20
9.5
12
15.6
FH28K-28S-0.5SH(**)
586-1880-0 **
28
13.5
16
19.6
FH28K-30S-0.5SH(**)
586-1877-0 **
30
14.5
17
20.6
FH28K-40S-0.5SH(**)
586-1878-0 **
40
19.5
22
25.6
FH28K-45S-0.5SH(**)
586-1884-0 **
45
22
24.5
28.1
FH28K-50S-0.5SH(**)
586-1875-0 **
50
24.5
27
30.6
FH28K-55S-0.5SH(**)
586-1881-0 **
55
27
29.5
33.1
FH28K-60S-0.5SH(**)
586-1872-0 **
60
29.5
32
35.6
FH28K-64S-0.5SH(**)
586-1882-0 **
64
31.5
34
37.6
FH28K-68S-0.5SH(**)
586-1873-0 **
68
33.5
36
39.6
FH28K-74S-0.5SH(**)
586-1885-0 **
74
36.5
39
42.6
FH28KH-80S-0.5SH(**)
586-1874-0 **
80
39.5
42
45.6
5
FH28K Series●0.5mm/1mm Pitch, 2.55mm Height, 125℃ Heat Resistant FPC/FFC Connectors
BRecommended PCB Layout
BRecommended Metal Mask Dimensions
A
Ｘ
0.3±0.03
nX
0.05 X
(Connector Outside)
1
Recommended metal mask thickness : t= 0.15
3.9±0.1 1.3±0.1
Contact No.1
for 1mm Pitch Products
1.25±0.1 1.75±0.1
F±0.1
G±0.1
A
Y
0.25±0.03
1
nX
0.05 Y
1.25±0.1 1.75±0.1
F±0.1
G±0.1
2.2±0.1
2.2±0.1
3.9±0.1 1.3±0.1
(0.5)
for 1mm Pitch Products
Note : 'n' indicates the number of positions.
BRecommended PCB Layout and Metal Mask Dimensions
BRecommended FPC/FFC
C0
.5
Dimensions
M
AX
for 0.5mm Pitch Products
0.5±0.1
G
15.6
20.6
25.6
30.6
35.6
37.6
39.6
Ｚ
0.5±0.1
±0.1
R0.2 0.3±0.05
0.1
3.5MIN
2.8±0.1
1.4±0.1
0.5
H±0.1
J±0.07
A
nX
0.35±0.03(FPC)
0.05 Z
0.3±0.03(FFC)
Unit : mm
F
12
17
22
27
32
34
36
R0.2±
R0.2±0.1
R0.
2M
AX
Contact No.1
Note : 'n' indicates the number of positions.
4.5MIN
Dec.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
Part No.
HRS No.
No. of Pos.
A
FH28K-20(10)SB-1SH(**)
−−−
10
9
FH28K-30(15)SB-1SH(**)
−−−
15
14
FH28K-40(20)SB-1SH(**)
−−−
20
19
FH28K-50(25)SB-1SH(**)
−−−
25
24
FH28K-60(30)SB-1SH(**)
−−−
30
29
FH28K-64(32)SB-1SH(**)
−−−
32
31
FH28K-68(34)SB-1SH(**)
−−−
34
33
Note : Contact positions without HRS No. are currently planned for development.
Please contact Hirose for detailed information about product variation.
BRecommended FPC/FFC Dimensions
HRS No.
586-1876-0 **
586-1883-0 **
586-1879-0 **
586-1880-0 **
586-1877-0 **
586-1878-0 **
586-1884-0 **
586-1875-0 **
586-1881-0 **
586-1872-0 **
586-1882-0 **
586-1873-0 **
586-1885-0 **
586-1874-0 **
AX
5M
0.
Dimensions
A
4.5
7
9.5
13.5
14.5
19.5
22
24.5
27
29.5
31.5
33.5
36.5
39.5
C
BRecommended FPC/FFC
Unit : mm
No. of Pos.
10
15
20
28
30
40
45
50
55
60
64
68
74
80
1±0.1
1
3.5MIN
2.8±0.1
1.4±0.1
for 1mm Pitch Products
H±0.1
J±0.07
A
nX
0.05 Z 0.6±0.03
Note : 'n' indicates the number of positions.
H
7.1
9.6
12.1
16.1
17.1
22.1
24.6
27.1
29.6
32.1
34.1
36.1
39.1
42.1
Ｚ
0.5±0.1
.1
R0.2±0
.1
0
R0.2±
R0.2±0.1
R0
.2M
AX
Contact No.1
BRecommended FPC/FFC Dimensions
Part No.
HRS No.
No. of Pos.
A
FH28K-20(10)SB-1SH(**)
−−−
10
9
FH28K-30(15)SB-1SH(**)
−−−
15
14
FH28K-40(20)SB-1SH(**)
−−−
20
19
FH28K-50(25)SB-1SH(**)
−−−
25
24
FH28K-60(30)SB-1SH(**)
−−−
30
29
FH28K-64(32)SB-1SH(**)
−−−
32
31
FH28K-68(34)SB-1SH(**)
−−−
34
33
Note : Contact positions without HRS No. are currently planned for development.
Please contact Hirose for detailed information about product variation.
6
J
5.5
8
10.5
14.5
15.5
20.5
23
25.5
28
30.5
32.5
34.5
37.5
40.5
0.3±0.05
4.5MIN
Part No.
FH28K-10S-0.5SH(**)
FH28K-15S-0.5SH(**)
FH28K-20S-0.5SH(**)
FH28K-28S-0.5SH(**)
FH28K-30S-0.5SH(**)
FH28K-40S-0.5SH(**)
FH28K-45S-0.5SH(**)
FH28K-50S-0.5SH(**)
FH28K-55S-0.5SH(**)
FH28K-60S-0.5SH(**)
FH28K-64S-0.5SH(**)
FH28K-68S-0.5SH(**)
FH28K-74S-0.5SH(**)
FH28KH-80S-0.5SH(**)
Unit : mm
H
12.1
17.1
22.1
27.1
32.1
34.1
36.1
J
10.5
15.5
20.5
25.5
30.5
32.5
34.5
FH28K Series●0.5mm/1mm Pitch, 2.55mm Height, 125℃ Heat Resistant FPC/FFC Connectors
BFH28K Series FPC/FFC Material Configuration (Recommended Specifications)
1. Single-Sided FPC
FPC : Flexible Printed Circuit
Layer
Cover Lay Film
Materials
Polymide
Thickness (µm)
1mil
(25)
Dec.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
Cover Adhesive
(25)
Surface Treatment
Nickel Under Plating 1~5µm+
gold plating 0.2µm
Copper Foil
Cu
Base Adhesive
Heat Stiffener Adhesive
25
Base Film
Polymide
25
Stiffener Adhesive
Heat Stiffener Adhesive
Reinforcing Film
Polymide
3
1oz
35
1mil
30
7mil
175
Total
2. Double-Sided FPC
293
FPC : Flexible Printed Circuit
Layer
Cover Lay Film
Materials
Polymide
Thickness (µm)
(25)
1mil
(25)
Cover Adhesive
Surface Treatment
Nickel Under Plating 1~5µm+
Gold Plating 0.2µm
Through Hole Copper
Cu
Copper Foil
Cu
Base Adhesive
Heat Stiffener Adhesive
18
Base Film
Polymide
25
Base Adhesive
Heat Stiffener Adhesive
Copper Foil
Cu
Cover Adhesive
Heat Stiffener Adhesive
25
Cover Lay Film
Polymide
25
Stiffener Adhesive
Heat Stiffener Adhesive
Reinforcing Film
Polymide
* Remove the copper foil on the back of double-sided FPC to avoid
damage due to FPC bending.
3. FFC
3
15
18
1/2oz
1mil
18
(18)
1/2oz
1mil
50
100
4mil
297
Total
FFC : Flexible Flat Cable
Layer
Materials
Thickness (µm)
Polyester Film
Adhesive
12
Polyester Thermal Plasticity
Annealed Copper Foil (Gold Plated
with Nickel Under Plating)
Adhesive
35
Polyester Type
Polyester
Adhesive
Reinforcing Film
30
30
12
Polyester Type
30
Polyester Type
188
Total
295
Nominal thickness tolerance is approximately ±20µm.
1. These specifications are an example of the material configuration of an FPC/FFC (t= 0.3 ±0.05) used on the FH28K
series.
2. Please contact the FPC/FFC manufacturer for the material configurations of their FPC/FFC.
7
FH28K Series●0.5mm/1mm Pitch, 2.55mm Height, 125℃ Heat Resistant FPC/FFC Connectors
BPackaging Specifications
●Embossed Carrier Tape Dimensions
●Embossed Carrier Tape Dimensions
.1
+00
5
Ø1.
(3)
(0.3)
4±0.1 2±0.15 12±0.1
1.75±0.1
4±0.1 2±0.15 12±0.1
+0.1
0
Ø1.5
P±0.1
Q±0.3
(K)
(L)
(M)
N±0.1
(K)
(L)
(M)
N±0.1
Q±0.3
(3)
(0.3)
(with a maximum tape width of 32mm)
1.75±0.1
(with a maximum tape width of 24mm)
(Ø1
3)
●Reel Dimensions
(Ø380)
(Ø80)
(T：Reel Inside Width)
(U：Reel Outside Width)
●Leader, Trailer Dimensions
End Section
Empty Pockets
(10 Pockets Min.)
8
Loaded Product Section
Leader (400mm Min.)
Empty Pockets
(10 Pockets Min.)
Embossed Carrier Tape
Top Cover Tape
(R)
(S)
1.5
+0.1
0
1.7
Dec.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
Unreeling Direction
+0.15
0
(R)
(S)
Unreeling Direction
FH28K Series●0.5mm/1mm Pitch, 2.55mm Height, 125℃ Heat Resistant FPC/FFC Connectors
BPackaging specification dimensions
for 0.5mm pitch products
Part No.
HRS No.
No. of Pos.
K
L
M
N
P
Q
R
S
T
U
586-1876-0 **
10
5.5
10.3
11.3
11.5
−
−−
24
7.1
8.5
25.4
29.4
FH28K-15S-0.5SH(**)
586-1883-0 **
15
8
12.8
13.8
11.5
−
−
−
24
7.1
8.5
25.4
29.4
FH28K-20S-0.5SH(**)
586-1879-0 **
20
10.5
15.3
16.3
11.5
−−
−
24
7.1
8.5
25.4
29.4
FH28K-28S-0.5SH(**)
586-1880-0 **
28
14.5
19.3
20.3
14.2
28.4
32
7.1
8.5
33.4
37.4
FH28K-30S-0.5SH(**)
586-1877-0 **
30
15.5
20.3
21.3
14.2
28.4
32
7.1
8.5
33.4
37.4
FH28K-40S-0.5SH(**)
586-1878-0 **
40
20.5
25.3
−−−
20.2
40.4
44
7.1
8.5
45.4
49.4
FH28K-45S-0.5SH(**)
586-1884-0 **
45
23
27.8
28.8
20.2
40.4
44
7.1
8.5
45.4
49.4
FH28K-50S-0.5SH(**)
586-1875-0 **
50
25.5
30.3
−−
−
20.2
40.4
44
7.1
8.5
45.4
49.4
FH28K-55S-0.5SH(**)
586-1881-0 **
55
28
32.8
−
−
−
20.2
40.4
44
7.1
8.5
45.4
49.4
FH28K-60S-0.5SH(**)
586-1872-0 **
60
30.5
35.3
36.3
26.2
52.4
56
7.1
8.5
57.4
61.4
FH28K-64S-0.5SH(**)
586-1882-0 **
64
32.5
37.3
−
−−
26.2
52.4
56
7.1
8.5
57.4
61.4
FH28K-68S-0.5SH(**)
586-1873-0 **
68
34.5
39.3
40.3
26.2
52.4
56
7.1
8.5
57.4
61.4
FH28K-74S-0.5SH(**)
586-1885-0 **
74
37.5
42.3
43.3
26.2
52.4
56
7.1
8.5
57.4
61.4
FH28KH-80S-0.5SH(**) 586-1874-0 **
80
40.5
45.3
46.3
26.2
52.4
56
6.6
8
57.4
61.4
BPackaging specification dimensions
for 1mm pitch products
Unit : mm
Part No.
HRS No.
No. of Pos.
K
L
M
N
P
Q
R
S
T
U
FH28K-20(10)SB-1SH(**)
−−−
10
10.5
15.3
16.3
11.5
−−
−
24
7.1
8.5
25.4
29.4
FH28K-30(15)SB-1SH(**)
−
−−
15
15.5
20.3
21.3
14.2
28.4
32
7.1
8.5
33.4
37.4
FH28K-40(20)SB-1SH(**)
−−−
20
20.5
25.3
−−−
20.2
40.4
44
7.1
8.5
45.4
49.4
FH28K-50(25)SB-1SH(**)
−−
−
25
25.5
30.3
−−−
20.2
40.4
44
7.1
8.5
45.4
49.4
FH28K-60(30)SB-1SH(**)
−−
−
30
30.5
35.3
36.3
26.2
52.4
56
7.1
8.5
57.4
61.4
FH28K-64(32)SB-1SH(**)
−−
−
32
32.5
37.3
−−−
26.2
52.4
56
7.1
8.5
57.4
61.4
FH28K-68(34)SB-1SH(**)
−−−
34
34.5
39.3
40.3
26.2
52.4
56
7.1
8.5
57.4
61.4
Note : Contact positions without HRS No. are currently planned for development.
Please contact Hirose for detailed information about product variation.
BRecommended soldering profile
MAX 250℃
245
220
220℃
180℃
180
Temperature（℃）
Dec.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
FH28K-10S-0.5SH(**)
Unit : mm
150
150℃
100
25
0
25℃
Start
120±5sec.
Preheating Time
20 to
40sec.
Peak Temperature
Heating Time
60 to 90sec.
Soldering
Time
（Seconds）
Applicable Conditions
Reflow type
: Far red/hot air reflow
Reflow furnace atmosphere : Atmosphere
Reflow soldering
: 2 cycles Max.
Soldering
: Cream type
Sn/3.0Ag/0.5Cu
(M705-GRN360-K2-V made by
Senju Metal Industry Co.)
Testing PCB
: PCB material and size
Glass epoxy 80×100×1.6mm
Land size, per recommended
PCB layout.
Metal mask
: Thickness and opening size
per recommended metal mask
dimensions
This solder profile is based on the conditions provided
above.
Please check the mounting conditions before use.
Conditions such as solder paste types, manufacturer,
PCB size and any other soldering materials may alter
the performance of such materials.
9
FH28K Series●0.5mm/1mm Pitch, 2.55mm Height, 125℃ Heat Resistant FPC/FFC Connectors
BOperation Methods of Connector and Precautions
Operation Method
1. FPC/FFC Insertion Method
1 Rotate the actuator upward unlock.
The actuator can be easily operated with
the use of a thumb nail or index finger.
Usage Precautions
1 The actuator on the FH28K Series connector is
designed to open to a maximum of 116 degrees,
trying to open it farther than that will lead to damage.
Dec.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
116˚
2 Insert the FPC/FFC into the insertion slot as
show below. Improper insertion may result
in FPC/FFC damage or conduction failure.
2 Insert the FPC/FFC with the contact surface
facing down.
Inser the FPC/FFC at an angle from above
the connector. Insert until it is securely held
in positioning portion of connector. Lightly
pull on the FPC/FFC to confirm it is held in
place. Refer to the next page for further
details.
Positioning
Portion
3 This connector is not designed to withstand
a large amount of force in the upward
direction. Secure the FPC/FFC if a force will
be applied.
3 Rotate the actuator downward.
4 When inserting an FPC/FFC to a connector with a high pin
count (80pos.), please use two fingers to close the actuator
on both sides. Using one finger to press on the center of
the actuator may result in incomplete actuator closing.
2. FPC/FFC Removal
1 Rotate the actuator upward, then lift the
FPC/FFC upward after the actuator has
been released and pull the FPC/FFC out.
10
5 When inserting FPC/FFC, do not rub against the
underside of the connector insertion port.
Otherwise, the contact and FPC/FFC will strongly
hit against each other which may result in contact
deformation or FPC/FFC conductor peeling.
FH28K Series●0.5mm/1mm Pitch, 2.55mm Height, 125℃ Heat Resistant FPC/FFC Connectors
BCautions when Mating FFC/FPC with Positioning Tabs
Operation Method
Usage Precautions
1. Insertion Position
2 FPC/FFC must not overlap
Insert the cable so that the positioning tabs are secured into
the gap (
) between the molded walls on both sides of
the connector (
) and the guide walls on both sides of the
connector interior (
).
Do not close the actuator until the FPC/FFC has been
placed into its correct position. If it is sitting on the guides
and the actuator closes onto it, it can cause damage and
conduction failure.
Dec.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
Overlapping on Left
Guide
Overlapping on Right
Guide
2. Cautions during Insertion/Mating
1 Do not insert the cable at a skewed angle. The cable
Normal Insertion
corner may get caught in the terminal resulting in contact
deformation.
Skewed Insertion
Closing the actuator with the
cable sitting on the guide.
Insert the cable straight into the connector opening and
hook the cable tab onto the guide.
Pull the cable towards yourself with a slight force after
insertion, and close the actuator after confirming that the
cable tab is completely secured.
If it cannot be pulled to out, the cable is inserted in the
correct position.
Recommended Mating Method
1 Insert the cable straight
from above the connector
at an angle.
In case you accidentally close the lock with the cable sitting
on the guides, do not move the cable around. Open the
actuator immediately and reposition the cable as explained
in “1. Insertion Position” noted above.
Moving the cable after closing the actuator
with the cable sitting on the guide.
2 Pull the cable lightly
towards yourself and
check if the tab is secured.
Pulling Direction
3 Close the actuator.
11
Dec.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
FH28K Series●0.5mm/1mm Pitch, 2.55mm Height, 125℃ Heat Resistant FPC/FFC Connectors
2-6-3,Nakagawa Chuoh,Tsuzuki-Ku,Yokohama-Shi 224-8540,JAPAN
https://www.hirose.com/
12
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 03/2021. Contents are subject to change without notice for the purpose of improvements.
