Riedon offers the best lead-time in the industry. Average lead-time is 4-5 weeks for wire wound resistors. 1-2 week premium delivery is also available!

Precision Wirewound Resistors

100 Series / SM Series / PC Series

Resistances to 6 Megohms

Resistance Tolerances to ±0.005%

TCR to ±1ppm/°C

High TCR Available (Balco & Platinum Wire)

100% Acceptance Tested

Long Term Stability to 100ppm/year

Matched Resistance Sets to ±0.001% and ±0.5ppm/°C

Type	Commercial Wattage (W)	MAX Ohms	Diameter	Length	Lead Diamter	MAX Working Voltage
SM-2	0.06	75K	0.100[2.5]	0.210[5.3]	0.020[0.5]	75
SM-3	0.08	150K	0.125[3.2]	0.260[6.6]	0.020[0.5] 0.025[0.6]	100
SM-4	0.10	250K	0.125[3.2]	0.375[9.5]	0.020[0.5]	100
SM-13	0.10	250K	0.156[4.0]	0.312[7.9]	0.020[0.5]	100
SM-5	0.12	400K	0.187[4.7]	0.250[6.4]	0.025[0.6]	150
SM-6	0.15	500K	0.187[4.7]	0.295[7.5]	0.025[0.6]	100
139A	0.15	500K	0.250[6.4]	0.250[6.4]	0.025[0.6]	200
SM-15	0.175	750K	0.187[4.7]	0.375[9.5]	0.025[0.6] 0.020[0.5]	200
SM-12	0.20	750K	0.187[4.7]	0.450[11.4]	0.025[0.6]	200
100	0.20	1M	0.250[6.4]	0.375[9.5]	0.032[0.8] 0.025[0.6]	200
SM-7	0.25	1M	0.210[5.3]	0.465[11.8]	0.025[0.6]	250
101	0.25	1.2M	0.250[6.4]	0.500[12.7]	0.032[0.8] 0.025[0.6]	300
102	0.33	2.5M	0.250[6.4]	0.750[19.1]	0.032[0.8] 0.025[0.6]	400
120	0.40	3.8M	0.375[9.5]	0.500[12.7]	0.032[0.8]	300
121	0.50	3.8M	0.375[9.5]	0.750[19.1]	0.032[0.8]	400
129	0.75	6M	0.375[9.5]	1.000[25.4]	0.032[0.8]	600
106	1.00	6M	0.500[12.7]	1.000[25.4]	0.032[0.8]	800
107	1.50	6M	0.500[12.7]	1.500[38.1]	0.032[0.8]	900
108	2.00	6M	0.500[12.7]	2.000[50.8]	0.032[0.8]	1000