HF8
SUBMINIATURE INTERMEDIATE POWER RELAY
Features
● 4kV impulse withstand voltage
(between coil and contacts)
● 1 Form A and 1 Form C configurations
File No.:E134517
● Subminiature, high sensitive, PCB layout
● Plastic sealed type for automatic wave soldering
V
D E
File No.:40025189
RoHS compliant
CONTACT DATA
COIL
Contact arrangement
1A, 1C
Contact resistance1)
100m max.(at 1A 24VDC)
Contact material
HF8: 6A 300VAC/28VDC
HF8A: 6A 277VAC/30VDC
Max. switching voltage
300VAC / 30VDC
Max. switching current
6A
Max. switching power
1800VA / 300W
1 x 107 OPS
Plastic sealed:1 x 104OPS
Flux proofed, Standard type:1 x 105 OPS
Electrical endurance2) Flux proofed, Sensitive type:5 x 104 OPS
(NO, 6A 300VAC, Resistive load,
Room temp., 1s on 9s off)
Mechanical endurance
Notes: 1) The data shown above are initial values.
2) For plastic sealed type, the venting-hole should be excised in
electrical endurance test.
CHARACTERISTICS
Insulation resistance
100M (at 500VDC)
Dielectric Between coil & contacts
2000VAC 1min
Between open contacts
750VAC 1min
Operate time (at rated. volt.)
6ms max.
Release time (at rated. volt.)
Humidity
3ms max.
5% to 85% RH
Operation ambient temperature
Shock resistance
Vibration resistance
Termination
Unit weight
Construction
(48VDC: Approx. 600mW)
Sensitive: Approx. 330mW
AgNi
Contact rating
(Res. load)
strength
Standard: Approx. 450mW
Coil power
-55
to 90
COIL DATA
at 23
Standard type
Nominal Pick-up Drop-out
Voltage Voltage Voltage
VDC
VDC
VDC
max.2)
min.2)
2.25
0.15
3
Max.
Voltage
VDC *3)
Coil
Resistance
3.90
20 x (1 10%)
5
3.75
0.25
6.50
56 x (1 10%)
6
4.50
0.30
7.80
80 x (1 10%)
9
6.75
0.45
11.7
180 x (1 10%)
12
9.00
0.60
15.6
320 x (1 10%)
18
13.5
0.90
23.4
720 x (1 10%)
24
18.0
1.20
31.2
1280 x (1 10%)
48
36.0
2.40
62.4
3800 x (1 10%)
Sensitive type
Nominal
Voltage
VDC
Pick-up
Voltage
VDC
max.2)
Drop-out
Voltage
VDC
min.2)
Max.
Voltage
VDC *3)
3
2.25
0.15
3.90
28 x (1 10%)
5
3.75
0.25
6.50
80 x (1 10%)
6
4.50
0.30
7.80
110 x (1 10%)
Coil
Resistance
Functional
98m/s2
Destructive
980m/s2
9
6.75
0.45
11.7
250 x (1 10%)
10Hz to 55Hz 1.5mm DA
12
9.00
0.60
15.6
440 x (1 10%)
PCB
18
13.5
0.90
23.4
1000 x (1 10%)
Approx. 11g
24
18.0
1.20
31.2
1780 x (1 10%)
48
36.0
2.40
62.4
7120 x (1 10%)
Plastic sealed,
Flux proofed
Notes: 1) The data shown above are initial values.
2) Please find coil temperature curve in the characteristic curves below.
3) UL insulation system: Class F, Class B, Class A.
Notes: 1) When requiring pick-up voltage < 75% of nominal voltage,
special order allowed.
2) The data shown above are initial values.
3) *Maximum voltage refers to the maximum voltage which
relay coil could endure in a short period of time.
HONGFA RELAY
ISO9001, ISO/TS16949 , ISO14001, OHSAS18001, IECQ QC 080000 CERTIFIED
2019 Rev. 1.01
159
SAFETY APPROVAL RATINGS
6A 28VDC
6A 300VAC
Medium Duty
HF8-1CH/1AH
2A 28VDC
2A 300VAC
3A 120VAC
General Duty
UL/CUL
HF8-1C/1A
6A 30VDC(NO/NC)
HF8A
VDE
6A 277VAC(NO/NC)
2.5A 250VAC COSØ=0.4
2.5A 250VAC COSØ=0.5
5A 250VAC COSØ=1
6A 250VAC COSØ=1
HF8....A
Notes: 1) All values unspecified are at room temperature.
2) Only typical loads are listed above. Other load specifications can be available upon request.
ORDERING INFORMATION
HF8
HF8A
-1C
H -12 D
S
F
E
(XXX)
HF8: Standard type
HF8A: Low cost type
Type
Contact arrangement: 1A: 1 Form A
1C: 1 Form C
Contact capacity
T: Heavy
duty Duty
10A (6A)
H: Medium
Nil: General Duty (3A/2A)
Coil voltage
3, 5, 6, 9, 12, 18, 24, 48VDC
Coil voltage form
D: DC
Coil power
S: Sensitive
Construction 1)
E: Plastic sealed
Insulation standard
F: Class F
Nil: Class B
Special code3)
XXX: Customer special requirement
Nil: Standard
Nil: Flux proofed
A: Class A (VDE version, Only for HF8-1AH/1CH)
Nil: Standard
Notes: 1) Under the ambience with dangerous gas like H2S, SO2 or NO2, plastic sealed type is recommended; Please test the relay in real applications.
If the ambience allows, flux proofed type is preferentially recommended.
2) Contact is recommended for suitable condition and specifications if water cleaning or surface process is involved in assembling relays
on PCB.
3) The customer special requirement express as special code after evaluating by Hongfa.
4)One packing methods available: tube package,Standard tube packing length is 345mm. Any special requirement needed, please contact
us for more details.
OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT
Outline Dimensions
1 Form A
21.3
0.2x1
0.7x0.4
160
16.2
2x□0.6
Unit: mm
Wiring Diagram
PCB Layout
(Bottom view)
(Bottom view)
4x 1.4
12.7
5.08
1.8
OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT
Outline Dimensions
Unit: mm
Wiring Diagram
PCB Layout
(Bottom view)
(Bottom view)
1 Form C
21.3
16.2
12.7
5.08
1.8
5x 1.4
2x□0.6
0.2x1
2-0.7x0.4
Remark: 1) * The additional tin top is max. 1mm.
2) In case of no tolerance shown in outline dimension: outline dimension ≤1mm, tolerance should be ±0.2mm; outline dimension >1mm
and ≤5mm, tolerance should be ±0.3mm; outline dimension >5mm, tolerance should be ±0.4mm.
3) The tolerance without indicating for PCB layout is always ±0.1mm.
4) The width of the gridding is 2.54mm.
CHARACTERISTIC CURVES
ENDURANCE CURVE
MAXIMUM SWITCHING POWER
COIL TEMPERATURE RISE
70
100
100
50
60
Resistive
阻性负载Load
50
6
A
40
10
1
30
5
B
20
10
100
200
300 400 500
Contact Voltage (V)
0
1
2
3
4
5
6
0
7
Contact Current (A)
80
90
100
110
120
130
Percentage Of Nominal Coil Voltage
Notes:
1) Curve A: HF8-1CH Standard type
Curve B: HF8-1CH Sensitive type
2) Test conditions:
NO, 6A 300VAC, Resistive load,
Flux proofed, Room temp.
1s on 9s off
3) For plastic sealed type, the venting-hole
should be excised in electrical endurance
test.
Testing conditions: 6A at 90 .
Mounting distance: 25mm
Disclaimer
The specification is for reference only. See to "Terminology and Guidelines" for more information. Specifications subject to change without notice.
We could not evaluate all the performance and all the parameters for every possible application. Thus the user should be in a right position to
choose the suitable product for their own application. If there is any query, please contact Hongfa for the technical service. However, it is the user’s
responsibility to determine which product should be used only.
© Xiamen Hongfa Electroacoustic Co., Ltd. All rights of Hongfa are reserved.
161
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