CMH IRCTT | Alldatasheet
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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. A subsidiary of TT electronics plc• 4222 South Staples Street • Corpus Christi T exas 78411 USAWire and Film Technologies Division T elephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com Tin Lead electroplated leads All welded cap and lead construction Heat conducting ceramic substrate Diamond spiraled thick film element Epoxy coated body High conductivity plated on nickel termination Thick Film High Voltage/ High Reliability MIL-Approved Metal Glaze™ Resistors Environmental Data 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 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 1, 2, 5 100 0 to -5 CMH - 1/2 RHV31 1/2 1,500 330K - 392M CMH - 1 RHV32 1 3,000 330K - 499M CMH - 2 RHV33 2 5,000 330K - 499M 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. Test Condition* Maximum ∆R (±3σ) Typical ∆R Thermal Shock ±0.25% ±0.10% Solder Effect ±0.15% ±0.05% Terminal Strength ±0.20% ±0.10% Moisture Resistance ±0.50% ±0.20% Load Life (1000 Hours at 25°C) ±1.00% ±0.25% Shelf Life (1 year at 25°C) ±0.10% ±0.03% Low-Temperature Operation ±0.15% ±0.05% Shock ±0.35% ±0.10% Vibration ±0.35% ±0.10% Dielectric Strength ±0.15% ±0.05% Insulation Resistance at 500 VDC ±109Ω min 5 x 1012Ω typ Notes: *Test per MIL-R-49462 and MIL-STD-202 CMH Series Issue September 2008 Sheet 1 of 3
- 4222 South Staples Street • Corpus Christi T exas 78411 USAWire and Film Technologies Division T elephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com BD CL BL 0.032 (0.81) DIA.* 1.50 ± 0.125 (38.1 ± 3.2) Dimensions (Inches and (mm)) IRC Type Body Length - BL Body Diameter - BD Clean Lead to Clean Lead - CL *CMH 1/4 leads are 0.025 (0.64) in diameter Power Derating Curve 80 100 120 140 160 180 100 Ambient Temperature (°C) % of Rated Power Temperature Rise Chart Temperature Rise (°C) % of Rated Power 100 0 10 20 30 40 50 60 70 80 90 CMH 1/4 CMH 1/2 CMH 1 CMH 2-3 CMH 5 IRC Advanced Film Division Physical Data Thick Film High Voltage/ High Reliability MIL-Approved Metal Glaze™ Resistors CMH Series Issue September 2008 Sheet 2 of 3
- 4222 South Staples Street • Corpus Christi T exas 78411 USAWire and Film Technologies Division T elephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com IRC Advanced Film Division Thick Film High Voltage/ High Reliability MIL-Approved Metal Glaze™ Resistors Sample Part No. IRC Type CMH 1/4, CMH 1/2, CMH 1, CMH 2, CMH 3, CMH 5 Temperature Coefficient ±100 ppm/°C Resistance (≥100Ω - First 3 significant digits plus 4th digit multiplier) Example: 100Ω = 1000; 1000Ω = 1001, 150,000Ω = 1503 (>100Ω - "R" is used to designate decimal) Example: 51Ω = 51R0; 1Ω = 1R00; 0.25Ω = R250 Tolerance F = ±1% G = ±2% J = ±5% Ordering Data CMH 3 - 100 - 2206 - F CMH Series Issue September 2008 Sheet 3 of 3