28
Ultra-Precision Resistor
(Hermetically Sealed)
Composition of Type Number
HC Y 30K000 T
Tolerance
Resistance Value
Type
TCR
Example:
Configuration
HC, HD Type HG Type
LT
F
d
W
LT
F1F
ddd
d1
d1
L
W
HC HD HG
3.81±0.25
19.0±0.3
2.54±0.25
12.8±0.3
8.8±0.3
5.08±0.25
5.08±0.25
30±10
␾0.65±0.05
␾0.8±0.05
Type
Dimensions in mm
L
W
T
F
F1
d
d1
10.7±0.3
10.7±0.3
4.3±0.3
TCR, Resistance Range, Tolerance, Rated Power
Type TCR (ppm/°C)
HC
HD
HG
-55°C to +125°C Resistance
Range(⍀)Resistance Tolerance (%)* Rated Power (W)
at 125°C
0±15 (W)
0±5 (X)
0±2.5 (Y)
0±1 (Z)**
0±5 (X)
0±2.5 (Y)
0±1 (Z)**
1 to 5
5 to 30
30 to 120k
1 to 10
10 to 10k
±
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)
±
0.1
(B) ±
0.5
(D) ±1 (F)
±
0.1
(B) ±
0.5
(D) ±1 (F)
±
0.01 (T) ±0.02 (Q) ±0.05 (A)
±
0.005
(V) ±0.01 (T)
±
0.02
(Q) ±0.05 (A)
±
0.1
(B) ±
0.5
(D) ±1 (F)
0.3
0.3
Symbols in parentheses are for type number composition.
*Resistance figures are obtained by measuring the leads at point 12.7±3.2mm away from the base for type HC
and HD, but, in case of resistance below 10 ohm, the value at 1.6±0.6mm away from the base for all types.
**Temperature characteristic Z is applicable for temperature range between 0°C and 60°C.
Power Derating Curve
25 50 75 100
Rated Power Percentage
200
250
150
100
50
(%)
(°C)150125
70
Ambient Temperature
r1
r3
ii
r2
r4
V
I
V
I
Four-Terminal (Kelvin) Connection
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.
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.
HC
HD HG
Four-Terminal Resistor
29
Performance
Parameters Test Condition MIL-PRF-55182/9 Specification ALPHA Typical Test Data
100G, 6ms., Sawtooth Wave, X, Y, each 10 shocks
20G, 10Hz to 2,000Hz to 10Hz, 20 min., X, Y, each 4 hrs.
70°C, Rated Voltage x 2, 1.5 hrs. – ON, 0.5 hr. – OFF, 2,000 hrs.
125°C, Rated Voltage, 1.5 hrs. – ON, 0.5 hr. – OFF, 2,000 hrs.
150°C, No Load, 2,000 hrs.
Atmospheric: 300V rms. Barometric: 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.)
15°C to 35°C, 15% RH to 75% RH, No Load, 10,000 hrs.
Maximum Rated Operating Temperature
Working Temperature Range
Maximum Working Voltage
70°C Power Rating
Life
High Temperature Exposure
Low Temperature Storage
Low Temperature Operation
Terminal Strength
Dielectric Withstanding Voltage
Insulation Resistance
Resistance to Soldering Heat
Moisture Resistance
Storage Life
Current Noise
Voltage Coefficient
Thermal EMF
Shock (Specified Pulse)
Vibration, High Frequency
Power Conditioning
Thermal Shock
Overload
125°C, Rated Power, 100 hrs.
-65°C/30 min. +150°C/30 min., 5 cycles
Rated Power x 6.25, 5 sec.
-65°C, 24 hrs.
-65°C, Rated Voltage, 45 min.
0.908kg (2 pounds), 10 sec.
±0.0025%
±0.0025%
±0.0025%
±0.0025%
±0.0025%
±0.001%
±0.0025%
±0.0025%
±0.0025%
over 10,000M
⍀
±0.0025%
±0.0025%
±0.01%
±0.01%
±0.0005 %
±0.01 %
-42dB
0.00003%/V
0.1␮V/°C
125°C
-65°C to +150°C
300V
±0.05%
±0.05%
±0.02%
±0.01%
±0.02%
±0.02%
over 10,000M
⍀
±0.02%
±0.05%
±0.05%
±0.05%
±0.005 %
±0.5 %
-32dB
0.0001%/V
1.0␮V/°C
±(0.20%+0.01
⍀
)
±0.05%
±0.05%
Solderability Steam Aging 8 hrs., 245°C, 5 sec. over 95% coverage
Resistance to Solvents 1 lsopropyl Alcohol + Mineral Spirits
2 Water + Butyl Cellosolve + Monoethanolamine no damage
over 95% coverage
no damage
Frequency Characteristics
1 5 10 50 100 500 (MHz)
R(AC)/R(DC)
150
100
50
(%)
Frequency
100
⍀
10k
⍀
10
⍀
1k
⍀
HC
70
60
50
40
30
20
10
800700600500400300200100
Applied Power
R
⍜
= 0.15¡C/mW
HC, HD Surface of
Resistive Element
HC, HD
R
⍜
= 0.07¡C/mW
HG
HC, HD Surface of
Hermetically Sealed
HG Surface of
Hermetically Sealed
HG Surface of
Resistive Element
⌬
T
(¡C)
(mW)
Temperaure Rise
Temperature of Resistor Surface
Precaution in Using HC, HD or HG Resistors
When soldering to mount HC, HD or HG on a board, keep the resistor over 10mm away
from the board surface by using an insulating tube.