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HCA Series

CERAMIC ENCASED WIRE WOUND RESISTOR
FIRE RETARDANT
  • Very high degree of insulation
  • Low surface Temperature.
  • TCR as low as ± 100 ppm/°C available.
  • 1W to 20W

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
±0.05		 MIN MAX
C-1A 1W 13.0 5.5 5.5 0.8 R10 370R 1.4
C-1 1W 15.0 6.5 7.5 0.8 R10 400R 1.9
C-2 2W 17.5 7.5 7.0 0.8 R10 1K0 2.5
C-3 3W 22.0 8.0 8.0 0.8 R10 1K8 3.8
C-5 5W 22.0 9.5 9.5 0.8 R10 2K1 5.1
C-7 7W 35.0 9.5 9.5 0.8 R10 5K2 7.8
C-10 10W 48.0 9.5 9.5 0.8 R82 11K 10.8
C-15 15W at 25 ° C 48.0 12.5 12.5 1.0 1R2 11K 17.8
C-20 20W at 25 °C 65.0 12.5 12.5 1.0 1R2 13K 22.0

Electrical and Environmental Characteristics / Data

Test Performance Requirements
Resistance tolerance ±10% [K]; ±5% [J]
[< 1ohms±0.05ohms]
Rated ambient temperature [ see derating curve] upto 10W, full power dissipation at 70°C
15W/20W, full power dissipation at 25°C
Di-electric withstanding voltage Max. D R±[2%+0.05ohms]
Temperature co-efficient ± 200 ppm/°C [> 10 ohms]
± 450 ppm/°C [< 10 ohms]
± 600 ppm/°C [< 1 ohms]
Short time overload Max DR±[ 2%+0.05 ohms]
Moisture Resistance Max DR± [5%+0.05 ohms]
Load life Max DR± [5%+0.05 ohms]
Ambient operating temperature range -25°C to +155°C
Flame Test Specifications laid down by UL have been met satisfactorily

NOTE:
TAPING :Types C-1A, C-1, C-2, C-3 & C-5 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 application. Hence the ceramic cases may be off-white/variations of brown and variations of grey; colours which are inherent to these ceramic materials.

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