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Technical content
Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com Type Commercial Wattage ( Watts ) Maximum Ohms Minimum Tolerance ( % ) Dimensions Maximum Working VoltageDiameter ±0.005” [±0.13mm] Length ±0.025” [±0.64mm] Lead Diameter1 ±0.002” [±0.05mm] SM-2 0.06 75k 0.005 0.025 [0.6] 100 0.025 [0.6] 200 0.025 [0.6] 300 0.025 [0.6] 400
1 Where more than one lead is listed / the top value is Standard
Lead Length = 1.50 [38] Min.
100 Series / SM Series / PC Series
- Resistances to 6 Megohms
- Resistance Tolerances to ±0.005%
- Temperature Coefficients of ±2 ppm/°C
- High TCR Available (Balco & Platinum Wire)
- 100% Acceptance Tested / Traceable to NIST
- Long Term Stability / 100ppm/year
- Matched Resistance Sets to ±0.001% and ±0.5 ppm/°C SPECIFICATIONS Part Description: Part Type - Resistance - Tolerance - TCR ( If not standard ) Example: SM-6 25K Ohms 0.1% Precision Wirewound Resistors
Ordering Information
Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com SPECIFICATIONS (continued) Specification Value Tolerances ±0.005% to ±1% ( See Derating Curve ) Temperature Coefficient ( Standard ) ( down to 1ppm on request ) >100W : ±10ppm/°C 10W to100W : ±20ppm/°C <10W : ±30ppm/°C Temperature Range -55°C to +145°C ( See Derating Curve ) Type Commercial Wattage ( Watts ) Maximum Ohms Minimum Tolerance1 ( % ) Dimensions Maximum Working Voltage Diameter ±0.005” [±0.13mm] Length ±0.025” [±0.64mm] Lead Diameter2 ±0.002” [±0.05mm] Lead Spacing ±0.015” [±0.4mm] 110PC 0.05 75k 0.005 1May not apply for all wire types. Please call factory. 2Where more than one lead is listed / the top value is Standard Lead Length = 1.00 [25] Min. PC Series Type Commercial Wattage ( Watts ) Maximum Ohms Dimensions Maximum Working Voltage Width ±0.010” [±0.25mm] Height ±0.025” [±0.64mm] Length ±0.010” [±0.25mm] Lead Diameter1 ±0.002” [±0.05mm] Lead Spacing ±0.015” [±0.4mm] 1 Lead Length = 1.00 [25] Min. Rectangular Series Power Derating Curve Percentage of Rated Power 180 160 140 120 100 0 20 40 60 80 100 120 140 160 Ambient Temperature °C 1% / 0.5% / 0.1% Tolerance 0.05% / 0.02% Tolerance 0.01% Tolerance 0.005% Tolerance Notes: ( Contact Factory for these options ) Fast Rise Time - These resistors are available in a low reactance design for fast rise time and extended frequency response. High Stability - These resistors are available in a High Stability version with maximum resistance change of ±20ppm/year under normal conditions. Wide TCR Range - These resistors are available in Low and High TC configurations from -20ppm/K to +6000ppm/K. Precision Wirewound Resistors