1
ISO-9001
Registered
PRECISION HIGH-VOLTAGE
THICK FILM RESISTORS
CGH SERIES
• •
• •
• 1/4 watt to 5 watt
• •
• •
• 100K ohm to 2000 megohm range
• •
• •
• ±0.5%, ±1%, ±2% or ±5% tolerance
• •
• •
• TCR of ±50 or ±100 ppm/°C
Diamond spiraled
thick film element
Heat conducting
ceramic substrate
Epoxy coated body
All welded cap and lead construction
High conductivity plated on
nickel termination
Tin Lead electroplated leads
SPECIFICATIONS:
IRC Type
CGH-1/4
CGH-1/2
CGH-1
CGH-2
CGH-3
CGH-5
Voltage Rating
(volts)2
750
1,500
3,000
5,000
10,000
20,000
Power Rating
@ 70°C (watts)1
1/4
1/2
1
2
3
5
Resistance
Range (ohms)3
100K-100M
100K-500M
50K-750M
100K-1500M
200K-2000M
300K-2000M
Maximum TCR
(±ppm/°C)4
50, 100
50, 100
50, 100
50, 100
50, 100
50, 100
VCR (ppm/V)5
0 to -5
0 to -5
0 to -5
0 to -5
0 to -5
0 to -5
Tol (±%)4
.5, 1, 2, 5
.5, 1, 2, 5
.5, 1, 2, 5
.5, 1, 2, 5
.5, 1, 2, 5
.5, 1, 2, 5
NOTES:
1. For power rating above 70°C, see derating curve.
2. Voltage rating shown is the rated DC continuous working voltage or the sine-wave RMS absolute maximum voltage at commercial
line frequency. For DC applications the absolute maximum permissible voltage is 1.5 times the value shown for low repetition
shor t-time-overload or pulse conditions of 10 seconds or less duration.
3. Contact factory for higher resistance values.
4. For CGH-1 and 2 above 500 meg and CGH-3 and 5 above 1000M only 2 and 5% tolerance and 100 ppm/°C TCR available.
5. Typical voltage coefficient of resistance is -1 to -2 ppm/V measured at full rated voltage and 10% rated voltage.
DIMENSIONS (Inches and (mm)):
0.032 (0.81) DIA.*
1.50±0.125
(38.1±3.2)
* CGH 1/4 leads are
0.025 (0.64) in diameter
IRC Type
CGH-1/4
CGH-1/2
CGH-1
CGH-2
CGH-3
CGH-5
Body Length - BL
0.275±0.031 (6.98±0.79)
0.400±0.031 (10.16±0.79)
0.690±0.062 (17.53±1.57)
1.062±0.062 (26.97±1.57)
2.062±0.062 (52.37±1.57)
3.062±0.062 (77.77±1.57)
Body Diameter - BD
0.088±0.010 (2.22±0.25)
0.138±0.016 (3.51±0.41)
0.297±0.031 (7.54±0.79)
0.297±0.031 (7.54±0.79)
0.297±0.031 (7.54±0.79)
0.297±0.031 (7.54±0.79)
Clean Lead to Clean Lead - CL
0.400 (10.16)
0.525 (13.34)
0.900 (22.86)
1.250 (31.75)
2.250 (57.15)
3.250 (82.55)
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
2
ISO-9001
Registered
0 102030405060708090
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CGH ENVIRONMENTAL PERFORMANCE:
TEST CONDITION1
Temperature Shoc k
Short-Time Overload (1.5 times rated V f or 10 sec)
Solder Eff ect
Terminal Strength
Moisture Resistance (no load or polar)
Load Life (1000 Hours at 70°C)
Shelf Life (1 year at 25°C)
High -Temperature Exposure (150°C f or 2000 Hours)
(175°C f or 2000 Hours)
Dielectric Breakdown3 (1/4 and 1/2 watt siz e)
(1 watt through 5 watt siz e)
Dielectric Strength4
Insulation Resistance at 500 VDC
Maximum ∆∆
∆∆
∆R
(±3σσ
σσ
σ)
±0.25%
±0.20%
±0.015%
±0.20%
±0.50%
±1.00%
±0.10%
±0.75%
±1.0%
±0.15%
109 ohms min.
Typical2 ∆∆
∆∆
∆R
±0.10%
±0.10%
±0.05%
±0.05%
±0.20%
±0.25%
±0.03%
±0.30%
±0.40%
±0.05%
1011 ohms typ .
2000 VDC, 1500 VA C
3500 VDC, 2500 VA C
NOTES:
1. Test method per MIL-STD-202 unless otherwise indicated
2. Typical defined as that percent change which will include a minimum of 50% of the measured changes in resistance from a
var iety of lots representing various unit sizes and ranges
3. Values shown are the maximum safe dielectric voltage applied from a V block or foil wrapping which extends the complete body
length of the resistor under test
4. Percent change after the maximum safe dielectric voltage is applied for 1 minute
TEMPERATURE RISE:
% Of Rated Power
Temperature Rise (°C)
HOW TO ORDER:
Sample Part No.: CGH 3 - 50ppm/°C - 2205 (22M) - 1%
IRC T ype
CGH 1/4, CGH 1/2, CGH 1, CGH 2, CGH 3, CGH 5
Temperature Coefficient
±100 ppm/°C, ±50 ppm/°C
Resistance
Standard EIA/MIL values f or metal film resistors. See specification chart on back inside cov er f or range .
Tolerance
±0.5%, ±1%, ±2%, ±5%
CGH 1/2
CGH 1
CGH 1/4
CGH 2-3
CGH 5
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
80 100 120 140 160 180
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PO WER DERATING:
% Of Rated Power
Ambient Temperature (°C)
