HFA Series
FIBRE GLASS SUBSTRATE
SILICONE COATED WIRE WOUND
SHATTER PROOF
LOW COST DUE TO AUTOMATION
Especially designed for entertainment electronics
High positive temperature co-efficient resistors
APPLICABLE STANDARDS - IS - 8909 and IEC-Pub 266
Physical configuration
HTR TYPE
POWER RATING at 70°C
DIMENSIONS (mm)
RESISTANCE RANGE
WT. PER PC(gms)
L
±2
D
±0.5
I
±2
d
±0.05
MIN
MAX
F-1
1W
13.0
4.5
38
0.8
R10
1K3
1.18
F-2
2W
16.0
4.5
38
0.8
R25
2K6
1.20
F-3
3W
18.0
5.2
38
0.8
R32
3K3
1.24
F-5
5W
30.0
5.2
38
0.8
R54
5K6
1.73
F-7
7W
39.0
5.2
38
0.8
R72
7K5
2.03
F-9
9W
45.0
5.2
38
0.8
R84
8K7
2.22
F-10
10W
54.0
5.2
38
0.8
1RO
11K
2.34
Electrical and Environmental Characteristics / Data
Test
Performance Requirements
Resistance tolerance
± 10% [K] ± 5%[J]
[< 1Ohm + 0.05Ohm]
Rated ambient temperature
[See derating curve]
at 70° C full power dissipation
Temperature co-efficient
±200 ppm/°C [>10 Ohm]
±450 ppm/°C [<10 Ohm]
±600 ppm/°C [<1 Ohm]
Short time overload
Max D R± [2% +0.05Ohm]
Moisture Resistance
Max D R± [5% +0.05Ohm]
Load Life
Max D R± [5%+0.05Ohm]
Ambient operating temperature range
-25°C to +155°C
Derating Curve
NOTE:
1) The leads of the resistor can be bent and cut as per requirements for quick PCB
mounting. Please send detailed drawings of the type of preforming required
2) Types F1, F2, and F3 can be supplied in taped form.
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