CMH

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 CMH - 1/4 CMH - 1/2 CMH - 1 CMH - 2 CMH - 3 CMH - 5 MIL Type³ RHV30 RHV31 RHV32 RHV33 RHV34 RHV35 Power Rating @ 70°C (watts)¹ 1/4 1/2 1 2 3 5 Voltage Rating (volts)² 750 1,500 3,000 5,000 10,000 20,000 Resistance Range (ohms)4 330K - 100M 330K - 392M 330K - 499M 330K - 499M 330K - 1000M 330K - 1000M 1, 2, 5 100 0 to -5 Tolerance (±%) Maximum TCR (±ppm/°C)4 VCR (ppm/V) 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 commercial 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 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. 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 1012Ω typ Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com A subsidiary of TT electronics plc CMH Series Issue September 2008 Sheet 1 of 3 Thick Film High Voltage/ High Reliability MIL-Approved Metal Glaze™ Resistors Physical Data 1.50 ± 0.125 (38.1 ± 3.2) BL IRC Advanced Film Division 0.032 (0.81) DIA.* BD CL *CMH 1/4 leads are 0.025 (0.64) in diameter Dimensions (Inches and (mm)) IRC Type CMH - 1/4 CMH - 1/2 CMH - 1 CMH - 2 CMH - 3 CMH - 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) Power Derating Curve 100 90 % of Rated Power 80 70 60 50 40 30 20 10 0 80 100 120 140 160 180 Temperature Rise Chart 100 90 % of Rated Power 80 70 60 50 40 30 20 10 0 0 10 20 30 40 50 60 70 80 90 CMH 1/4 CMH 2-3 CMH 1/2 CMH 5 CMH 1 Ambient Temperature (°C) Temperature Rise (°C) Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com CMH Series Issue September 2008 Sheet 2 of 3 Thick Film High Voltage/ High Reliability MIL-Approved Metal Glaze™ Resistors Ordering Data Sample Part No. IRC Type CMH 3 - 100 - 2206 - F IRC Advanced Film Division CMH 1/4, CMH 1/2, CMH 1, CMH 2, CMH 3, CMH 5 Temperature Coefficient ±100 ppm/°C (≥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 Resistance Tolerance F = ±1% G = ±2% J = ±5% Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com CMH Series Issue September 2008 Sheet 3 of 3