HC, HD, HG Series
Alpha Electronics
Ultra Precision Resistor (Hermetically Sealed)
HC
HD
TCR, RESISTANCE RANGE, TOLERANCE,
RATED POWER
Type
TCR
(ppm/°C)
–55°C to
+125°C*
0±15 (W)
HC
HD
0±5 (X)
0±5 (X)
0±2.5 (Y)
0±1 (Z)**
Resis-
tance
Range
(Ω)
1 to 5
5 to 30
Resistance
Tolerance (%)*†
±0.5 (D) ±1 (F)
±0.1 (B) ±0.5 (D) ±1 (F)
0.3
Rated
Power
(W)
at 125°C
HG
±0.005 (V) ±0.01 (T)
30 to 120k
±0.02 (Q) ±0.05 (A)
±0.1 (B) ±0.5 (D) ±1 (F)
1 to 10
±0.01 (T) ±0.02 (Q)
±0.05 (A) ±0.1 (B)
±0.5 (D) ±1 (F)
±0.005 (V) ±0.01 (T)
±0.02 (Q) ±0.05 (A)
±0.1 (B) ±0.5 (D) ±1 (F)
HG
COMPOSITION OF TYPE NUMBER
0±2.5 (Y)
0±1 (Z)**
10 to 10k
0.3
HC Y 30K000 T
* Symbols in parentheses are for type number composition.
† Resistance figures are obtained by measuring the leads at point
12.7±3.2 mm away from the base for type HC and HD, but, in case of
resistance below 10 ohm, the value at 1.6±0.6 mm away from the base
for all types.
**Temperature characteristic Z is applicable for temperature range
between 0°C and 60°C.
POWER DERATING CURVE
Resistance value, in ohm, is expressed by a series of six
characters, five of which represent significant digits. The sixth
R or K is a dual-purpose letter that designates both the value
range (R for ohmic; K for kilo-ohm) and the location of decimal
point.
(%)
250
Rated Power Percentage
200
150
100
50
70
25
125
50
75
100
Ambient Temperature
150 (°C)
CONFIGURATION
(DIMENSIONS IN mm)
HC, HD Type
HG Type
FOUR-TERMINAL (KELVIN) CONNECTION
For low ohmic resistor (less than 10 ohm), the resistance value
and TCR of the copper lead increases overall resistance value.
Four-terminal (Kelvin) connection is recommended per the
following figure. Loading current at voltage and current
terminals (V, I) causes measurement error.
Four-Terminal Resistor
Type
L
W
T
F
F1
ℓ
d
d1
3.81±0.25
–
30±10
Dia. 0.65±0.05
Dia. 0.8±0.05
HC
10.7±0.3
10.7±0.3
4.3±03
5.08±0.25
HD
HG
19.0±0.3
12.8±0.3
8.8±0.3
2.54±0.25
5.08±0.25
www.alpha-elec.co.jp
30
For technical questions, contact
sales-alpha@alpha-elec.co.jp
Document No.: 67006
Revision: 04-Feb-2013
HC, HD, HG Series
Alpha Electronics
Ultra Precision Resistor (Hermetically Sealed)
PERFORMANCE
Parameters
Maximum Rated Operating Temperature
Working Temperature Range
Maximum Working Voltage
Power Conditioning
Thermal Shock
Overload
Solderability
Resistance to Solvents
Low Temperature Storage
Low Temperature Operation
Terminal Strength
Dielectric Withstanding Voltage
Insulation Resistance
Resistance to Soldering Heat
Moisture Resistance
Shock (Specified Pulse)
Vibration, High Frequency
Life
70°C Power Rating
Storage Life
High Temperature Exposure
Current Noise
Voltage Coefficient
Thermal EMF
125°C, Rated Power, 100 hrs.
–65°C/30 min.
↔
+150°C/30 min., 5 cycles
Rated Voltage x 6.25, 5 sec.
Steam Aging 8 hrs., 245°C, 5 sec.
❶
lsopropyl Alcohol + Mineral Spirits
❷
Water + Butyl Cellosolve + Monoethanolamine
–65°C, 24 hrs.
–65°C Rated Voltage, 45 min.
0.908 kg (2 pounds), 10 sec.
Atom. Pres.: 300V rms. Baro. Pres. 8 mHg: 200V rms.
DC 100V, 2 min.
260°C, 10 sec. ±2 sec.
+65°C to –10°C, 90% RH to 98% RH, Rated Voltage, 10 cycles (240 hrs.)
100G, 6 ms, Sawtooth Wave, X, Y, Z, each 10 shocks
20G, 10 Hz to 2,000 Hz to 10 Hz, 20 min., X, Y, each 4 hrs.
125°C, Rated Power, 1.5 hr. – ON, 0.5 hr. – OFF, 2,000 hrs.
70°C, Rated Voltage x 2, 1.5 hrs. – ON, 0.5 hr. – OFF, 2,000 hrs.
15°C to 35°C, 15% RH to 75% RH, No Load, 10,000 hrs.
175°C, No Load, 2,000 hrs.
Test Condition
MIL-PRF-55182/9
Specification
ALPHA Typical
Test Data
125°C
–65°C to +150°C
300V
±(0.20% +0.01Ω)
±0.05%
±0.05%
±0.0025%
±0.0025%
±0.0025%
over 95% coverage
no damage
±0.05%
±0.05%
±0.02%
±0.02%
over 10,000 MΩ
±0.02%
±0.05%
±0.01%
±0.02%
±0.05%
±0.05%
±0.005%
±0.5%
–32 dB
0.0001%/V
1.0 µV/°C
±0.0025%
±0.0025%
±0.001%
±0.0025%
over 10,000 MΩ
±0.0025%
±0.0025%
±0.0025%
±0.0025%
±0.01%
±0.01%
±0.0005%
±0.01%
–42 dB
0.00003%/V
0.1 µV/°C
FREQUENCY CHARACTERISTICS
(%)
HC
10
100
100
1k
TEMPERATURE OF RESISTOR SURFACE
HC, HD
HG
150
R(AC)/R(DC)
50
10 k
1
5
Frequency
10
50 100
500 (MHz)
PRECAUTION IN USING HC, HD OR HG RESISTORS
When soldering to mount HC, HD or HG on a board, keep the resistor
over 10 mm away from the board surface by using an insulating tube.
Document No.: 67006
Revision: 04-Feb-2013
For technical questions, contact
sales-alpha@alpha-elec.co.jp
www.alpha-elec.co.jp
31
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