CMH Datasheet, PDF (1/3 Pages) IRC - a TT electronics Company. – Thick Film High Voltage/ High Reliability MIL-Approved Metal Glaze™ Resistors

Thick Film High Voltage/
High Reliability MIL-Approved
Metal Glaze™ Resistors
CMH Series
• 1/4 watt to 5 watt
• TCR of ±100 ppm/°C
• Qualified to MIL-R-49462
• 330K ohm to 1G ohm range
• ±1%, ±2%, or ±5% tolerance
Diamond spiraled
thick film element
Heat conducting
ceramic substrate
Epoxy coated body
High conductivity plated on
nickel termination
All welded cap and lead construction
Tin Lead electroplated leads
Electrical Data
IRC Type
MIL
Type³
Power
Rating @
70°C (watts)¹
Voltage
Rating
(volts)²
Resistance Range
(ohms)⁴
Tolerance
(±%)
Maximum
TCR
(±ppm/°C)⁴
VCR (ppm/V)
CMH - 1/4 RHV30
1/4
750
330K - 100M
CMH - 1/2 RHV31
1/2
1,500
330K - 392M
CMH - 1
RHV32
1
CMH - 2
RHV33
2
3,000
5,000
330K - 499M
1, 2, 5
100
330K - 499M
0 to -5
CMH - 3
RHV34
3
10,000
330K - 1000M
CMH - 5
RHV35
5
20,000
330K - 1000M
Notes:
1. For power rating above 70C, see derating curve.
2. Voltage rating shown is the rated DC continuous working voltage or the sine-wave RMS absolute maximum voltage at com-
mercial line frequency.
3. Marked per MIL-R-49462
4. Values greater than 100 meg and less than 500 meg, ±200ppm; values greater than or equal to 500 meg, ±500ppm.
Environmental Data
Test Condition*
Thermal Shock
Solder Effect
Terminal Strength
Moisture Resistance
Load Life (1000 Hours at 25°C)
Shelf Life (1 year at 25°C)
Low-Temperature Operation
Shock
Vibration
Dielectric Strength
Insulation Resistance at 500 VDC
Notes:
*Test per MIL-R-49462 and MIL-STD-202
Maximum ∆R
(±3σ)
±0.25%
±0.15%
±0.20%
±0.50%
±1.00%
±0.10%
±0.15%
±0.35%
±0.35%
±0.15%
±10⁹Ω min
Typical ∆R
±0.10%
±0.05%
±0.10%
±0.20%
±0.25%
±0.03%
±0.05%
±0.10%
±0.10%
±0.05%
5 x 10¹²â„¦ typ
General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print.
Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: [phone] • Facsimile: 361 992 3377 • Website: www.irctt.com
A subsidiary of
TT electronics plc
CMH Series Issue September 2008 Sheet 1 of 3