Micro-Ohm Precision Power Resistors Series RWR

	RWR TYPE RESISTORS Commercial Equivalent 1W to 7W

STANDARD ELECTRICAL SPECIFICATIONS

MO Type	Mil39007 Type	Commercial Power Rating	Resistance & Tolerance Range			Max. Wt. (grams)
See Note 1			.1%	.25%	.5%,1%, 3%,5%
R81S	RWR-81S	1	.499-1000	.499-3400	.1-3400	.21
R81W	RWR-81W	1	.499-1000	.499-3400	.1-3400	.21
R82S	RWR-82S	1.5	.499-1300	.499-4900	.1-4900	.23
R82W	RWR-82W	1.5	.499-1300	.499-4900	.1-4900	.23
R80S	RWR-80S	2	.499-3160	.499-10,400	.1-10,400	.34
R80W	RWR-80W	2	.499-3160	.499-10,400	.1-10,400	.34
R89S	RWR-89S	3	.499-6500	.1-24,500	.1-24,500	.70
R89W	RWR-89W	3	.499-6500	.1-24,500	.1-24,500	.70
R84S	RWR-84S	7	.499-24,500	1-91,000	.1-91,000	3.6
R84W	RWR-84W	7	.499-24,500	1-91,000	.1-91,000	3.6
Note 1: "S" = Solderable, "W" = Weldable, "N" = Non-Inductive winding after lead designation

SPECIFICATIONS
MECHANICAL: Terminal strength. 5 lb pull for 2 watt and smaller 10 lb pull for 3 watt and larger	SOLDERABILITY: Meets Requirements of MIL STD.202 Method 208
SOLVENT RESISTANCE: Meets Requirements odf MIL STD.202 Method 215	ELECTRICAL: Tolerance: 1% thru 5%
DIELECTRIC STRENGTH: 500 VAC for 2 watt and smaller 1000 VAC for 3 watt and larger	INSULATION RESISTANCE: 1000 Megohm Minimum
SHORT TIME OVERLOAD: 5 seconds at 5 times rated power for 3 watt and smaller 5 seconds at 10 times rated power for 5 watt and smaller	ELEMENT: Copper-Nickel alloy or Nickel-Chromium alloy depending on resistance value.
MATERIAL: Core: Alumina	END CAPS: Stainless Steel
COATING: Special High Temperatur Silicone or Ceramic	LEADS: Solderable - Tinned Copper Weld Weldable Bare Nickel
POWER RATING: Power rating are based on a maximum R of 5% ± 5 ohm when operated for 2000 hours at rated power.
DERATING: These limits have an operating temperature range of -55°C to +275°C. For ambient temperatures above +25°C they must be derated according to the graph.

PHYSICAL CONFIGURATIONS Numbers in brackets indicate millimeters
M-O Type	Dim. A	Dim. B	Dim. C
M-O Type	Dim. A	Dim. B	Dim. C
R-81	.250±.015 [6.35±.381]	.078±.015 [1.98±.381]	.020±.0015 [.508±.038]
R-82	.312±.015 [7.92±.381]	.078±.015 [1.98±.381]	.020±.0015 [.508±.038]
R-80	.406±.015 [10.31±.381]	.093±.015 [2.36±.381]	.025±.0015 [.635±.038]
R-89	.560±.062 [14.22± 1.58]	.187±.031 [4.75±.787]	.032±.002 [.813±.051]
R-84	.875±.062 [22.23±1.58]	.300±.031 [7.62±.787]	.040±.002 [1.02±.051]

ORDERING INFORMATION

Example: 2W 10 ohm 5% Solderable lead

R80S	10R0	J	S
Type	Resistance	Tolerance	S = Solderable W = Weldable
	4 digit. <100 use R for decimal. >100 4th digit is multiplier	J = 5% F = 1% D = .5% C = .25% B = .1% A = .05%	S = Solderable W = Weldable
For Non-Inductive add letter N after Type

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