HIA
SERIES
PRECISION POWER
Silicone Coated Wire Wound Resistors
Industrial / Professional Applications
WIRE WOUND RESISTORS
SILICONE COATED TYPE
Alloy Resistance Wire, wound to
Specific Parameters On High
Thermal Conductivity Ceramic Core
All Welded Cap
And Lead Assembly
Flame Retardant
Thermocoat
For non-inductive types and for
resistance values < 1R0 + 0.8mm
allowed.
Coating overflow on each lead not
to exceed half of ‘D’.
For resistance values less than R10
and tolerance less than +2% please
measure resistance over centered
length LM.
Low inductance Aryton - Perry
winding type resistors are
available in this series. For non-
inductive types reduce maximum
resistance values shown to 50% and
the continuous working voltage to
70% (Please refer to note (1) of
ordering information for placing
orders).
Resistors for use under pulse
conditions as per IEC - 61000 - 4 - 5
available. For further information
please refer to
In case a tailor-made pulse resistor
is required, please refer to
and provide data accordingly .
NON INDUCTIVE RESISTORS
PULSE TYPE RESISTORS
“Understanding
pulse & over load capability of wire
wound resistors”.
"Questionnaire of data required"
TM
Flame retardant coating.
0.5 W to 15 W.
Tolerances as close as 0.25%
R 01 to 100 K +
TCR as low as 20ppm / °C available depending
on application and resistance value.
Special types available for pulse applications-IEC 61000-4-5.
APPLICABLE STANDARDS
ML- R 26 Char. U, EIA-RS-155-B Char. G, JIS-C 6401 Char. G, IEC - Pub 266 and Pub 266 A / Type 2D / 2F.
PHYSICAL CONFIGURATION
L
φd
II
φD
LM
H-0.5 0.5W 7.0 4.0 38 0.8 30 R01 1K2 0.55
H-2 2W 11.5 4.5 38 0.8 35 R01 5K6 0.8
D-2 2W (70 C) 14.0 5.5 38 0.8 35 R01 10K 1.1
H-3A 3W 12.5 5.5 38 0.8 35 R01 10K 1.1
H-3 3W 15.5 6.0 38 0.8 35 R01 12K 1.2
H-4 4W 16.0 6.0 38 0.8 40 R01 12K 1.3
H-5A 5W 19.5 6.5 38 0.8 40 R01 20K 2.0
D-5 5W (70 C) 22.5 7.5 38 0.8 45 R01 20K 3.1
H-5 5W 25.0 8.5 38 0.8 45 R01 39K 3.3
H-7 7W 39.0 8.5 38 0.8 60 R01 70K 5.4
H-10 10W 54.0 8.5 38 0.8 75 R01 100K 6.3
H-15 15W 45.0 10.0 38 1.0 65 R01 100K 5.9
D-0.5
H-1 1W 9.5 4.0 38 0.8 30 R01 3K5 0.6
°
°
H-7A 7W 32.5 9.5 38 0.8 55 R01 68K 5.0
H-10A 10W 45.0 9.5 38 0.8 65 R01 100K 5.7
HTR
TYPE POWER
RATING
at 40°C
(Ambient)
DIMENSIONS (mm) RESISTANCE
RANGE
min max
TYPICAL
WT.
PER PC
(gms)
L
(max) l
+1.5 d
+0.05
D
+0.5 LM
+1
WIRE WOUND RESISTORS
SILICONE COATED TYPE
HIA
PRE-FORMED LEADS - The resistor terminations can be bent and cut as per requirements for quick PCB
mounting. Please send detailed drawings of specific type of preforming required. Depending on application
®
the resistor leads may be tin plated Copper Weld instead of tin plated copper .
TAPING - Types H-0.5, D-0.5, H-1, H-2, H-3, H-3A, H-4, H-5A & H-5 can be supplied in taped form. Please refer
to on request. tape/ammo pack specifications. T ape/Reel
TM
Voltage rating
The resistors shall have a rated DC, continuous
working voltage or an approximate sine-wave root
mean square (rms) working voltage at commercial
line frequency corresponding to the power rating as
determined by the following formula
E = PR
where,
E = rated DC or rms continuous working voltage.
P = Power rating in watts.
R = Nominal resistance in ohms.
Rated ambient temperature - 40°C
Full power dissipation at upto 40°C and linearly
derated down to zero dissipation at 275°C. [See
derating curve]
Resistor temperature rise as a function of applied
power
[see graph displayed below]
Resistance tolerances available
+10% [K], +5% [J], +3% [H] +2% [G], +1% [F], +0.5%
[D], +0.25% [C] [T est method no. 303 of MIL 202 F]
ELECTRICAL DATA/CHARACTERISTICS
DERATING CURVE
100%
83.5%
50%
0
Rated Dissipation [%]
40 70 100 200 275
0
Ambient Temperature [ C]
ENVIRONMENTAL SPECIFICA TIONS
T emperature Co-efficient
+120 ppm/ °C for < R10; +90 ppm/ °C for < 1R0; +60ppm/ °C for < 100R;
+100ppm/ °C or +30ppm/ °C for >100R depending on wire selected. [T est method no. 304 of MIL 202 F]
Moisture resistance Load life
Max. R+[3% + R05]. Max. R+[3.5% + R05].
No mechanical damage. No mechanical damage.
[T est method no. 106 E of MIL 202 F] [T est method no. 108 A of MIL 202 F]
Note : The temperature rise graph is indicative of general behaviour and is given for the guidance of designers.
However if the data required is critical please refer to the factory as the curve could vary depending on
power rating and resistance value.
Dielectric withstanding voltage
Max. R+(1%+R05). No flashover, mechanical
damage, arcing or insulation breakdown.
[T est method no. 301 of MIL 202 F]
Insulation resistance
> 1000 M (dry) > 100 M (wet)
[T est method no. 302 of MIL 202 F]
Short time overload
Max. R+(2%+R05). No arcing, burning or charring.
[Test method - 5 secs at 5 times rated power for 3
watts and smaller; 5 secs at 10 times rated power
for 4 watts and larger]
10 20 30 40 50 60 70 80 90 100
Percentage of nominal power
at an ambient temperature of 25°C
0
Temperature rise [ C]
275°
200°
°C
100°
Temperature rise curve
WIRE WOUND RESISTORS
SILICONE COATED TYPE
HIA
MECHANICAL SPECIFICATIONS
Pull test Solderability
No mechanical damage Continuous and satisfactory
[Force supplied from 2 to 4.5 Kgs depending on size] [Test method no. 208 F of MIL 202 F]
TM
TYPICAL APPLICATIONS
The usage of HIA series resistors will expand circuit design limits significantly because they have precision
resistor characteristics with low TC and are able to carry load at high ambient temperatures.
HIA series can effectively be used in all industrial, electrical, electronic and telecommunication equipment
where large power dissipation is required (e.g. when used as a voltage divider or bleeder resistor in DC power
supplies or for series dropping). They are generally satisfactory for use at frequencies upto 50 KHz.
HIA series when wound by the Aryton-Perry method can be used effectively for high frequency applications
where fast rise time and minimum phase shift AC characteristics are necessary.
Note : (1) In case non inductive type is required please prefix HTR TYPE with 'N' eg : NH - 2
(2) Type H5, H7, H7A, H10 and H10A can be supplied with lead diameter of 1.0 mm. Please specify to
avoid confusion.
(3) In case Pulse type is required please suffix HTR T ype with ‘I’ eg. H3I
The Words - “Applicable standards” do not necessarily signify certification to that standard, however the tests
mentioned are carried out on the broad based guidelines set out in these standards.
TOLERANCE
RESISTANCE VALUE
HTR TYPE
SERIES
HIA 100R JH2
ORDERING INFORMATION