IBS-HEA

HEA Series

POWER CERAMIC ENCASED WIRE WOUND

Semi Precision Ceramic Type
2.5 W TO 17 W.
R 025 to 70 K.
TCR as low as ± 60ppm/°C available depending on application and resistance value

Physical configuration

HTR TYPE

POWER RATING at 70°C

DIMENSIONS (mm)

RESISTANCE RANGE

Wt Per PC (gms)

L
±1.5

W
±1

H
±1

D
+0.03
/-0.0

d
±0.05

MIN

MAX

C-2A

2.5W

15.0

6.0

4.3

0.8

R025

3K0

1.6

C-4

20.0

6.0

4.3

0.8

R10

7K0

2.0

C-5B

25.0

6.0

4.3

0.8

R15

15K

2.3

C-6

30.0

6.0

4.3

0.8

R18

18K

2.8

C-7A

38.0

6.0

4.3

0.8

R33

33K

4.9

C-7B

25.0

9.0

6.0

0.8

R15

18K

4.8

C-9 /
C-10A

9W /
10W

38.0

9.0

6.0

0.8

R33

33K

7.3

C-11

11W

50.0

9.0

6.0

0.8

R51

47K

9.5

C-17

17W

75.0

9.0

6.0

0.8

R91

70K

13.8

Resistors over the entire resistance range given are available in a range of temperature co-efficients from ± 60 ppm/°C to 1300 ppm/°C depending upon the resistance value chosen.

Electrical and Environmental Characteristics / Data

Test	Performance Requirements
Resistance tolerance	± 10% [K]; ± 5% [J]; ±2% [G] [< 1ohm ± 0.05 ohms]
Rated ambient temperature [ see derating curve]	at 70°C full power dissipation
Dielectric withstanding voltage	max D R ± [2%+0.05 ohms]
Insulation resistance	> 1000 M [minimum]
Temperature co-efficient	± 60 to 200 ppm/ °C [medium and high values] ± 450 to 1300 ppm/ °C [low and very low values]
Short time overload	Max D R ± [ 2%+0.05 ohms]
Moisture Resistance	Max D R ± [5%+0.05 ohms]
Load life	Max D R ± [5%+0.05 ohms]
Ambient operating temperature range	-25°C to +155°C
Flame Test	UL specifications have been met satisfactorily

NOTE:
TAPING :Type C-2A, C-4, C-5B and C-7B can be supplied in taped form..

NOTE:
Due to recent technological advances, the ceramic cases used may be steatite ceramic / corderite ceramic / high alumina ceramic depending on the nature of the application. Hence the ceramic cases may be off-white / variations of brown and variations of grey; colours which are inherent to these ceramic materials.