Resistor Wirewound Precision

This specific product line is not for new designs. A precision wirewound resistor is designed to absorb high energy impulses. Stable materials used in the wiring of a wirewound resistor leads to high accuracy, superior stability, and low temperature coefficient of resistance (TCR).

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Radial

Package Code		B01	B03
Max Resistance (Ω)		500k	500k
Max Working Voltage (V)		150	150
Power Rating (W)		0.125	0.300
Dimensions Inches [mm]	Width ±0.010” [±0.25mm]	0.140 [3.56]	0.102 [2.59]
	Height ±0.025” [±0.64mm]	0.250 [6.35]	0.320 [8.13]
	Length ±0.010” [±0.25mm]	0.270 [6.86]	0.300 [7.62]
	Lead Diameter ¹ ±0.002” [±0.05mm]	0.032 [0.81]	0.025 [0.64]
	Lead Spacing ±0.015” [±0.4mm]	0.125 [3.18]	0.150 [3.81]

* Moisture Sensitivity Level: MSL - 1

Radial Dimensions

Lead Length 1.00” [25.40mm] Min

Axial Dimensions

Lead Length 1.50” [38.10mm] Min

Package Code		A01	A02	A03	A04	A05	A06	A07	A08	A09	A10	A11	A12
Max Resistance (Ω)		75k	150k	150k	250k	250k	400k	500k	500k	750k	750k	1M	1M
Max Working Voltage (V)		75	100	100	100	100	150	150	100	200	200	200	200
Power Rating (W)		0.06	0.08	0.08	0.10	0.10	0.12	0.15	0.15	0.175	0.20	0.20	0.20
Dimensions Inches [mm]
	Length ±0.010” [±0.25mm]	0.210 [5.33]	0.260 [6.60]	0.260 [6.60]	0.375 [9.53]	0.312 [7.92]	0.250 [6.35]	0.295 [7.49]	0.250 [6.35]	0.375 [9.53]	0.450 [11.43]	0.375 [9.53]	0.375 [9.53]
	Diameter ±0.002” [±0.05mm]	0.100 [2.54]	0.125 [3.18]	0.125 [3.18]	0.125 [3.18]	0.156 [3.96]	0.187 [4.75]	0.187 [4.75]	0.250 [6.35]	0.187 [4.75]	0.187 [4.75]	0.250 [6.35]	0.250 [6.35]
	Lead Spacing ±0.015” [±0.4mm]	0.020 [0.51]	0.020 [0.51]	0.025 [0.64]	0.020 [0.51]	0.020 [0.51]	0.025 [0.64]	0.025 [0.64]	0.025 [0.64]	0.025 [0.64]	0.025 [0.64]	0.032 [0.81]	0.025 [0.64]

Package Code		A13	A14	A15	A16	A17	A18	A19	A20	A21	A22	A23
Max Resistance (Ω)		1M	1.2M	1.2M	2.5M	2.5M	3.8M	3.8M	6M	6M	6M	6M
Max Working Voltage (V)		250	300	300	400	400	300	400	600	800	900	1000
Power Rating (W)		0.25	0.25	0.25	0.33	0.33	0.40	0.50	0.75	1.00	1.50	2.00
Dimensions Inches [mm]
	Length ±0.010” [±0.25mm]	0.465 [11.81]	0.500 [12.70]	0.500 [12.70]	0.750 [19.05]	0.750 [19.05]	0.500 [12.70]	0.750 [19.05]	1.000 [25.40]	1.000 [25.40]	1.500 [38.10]	2.000 [50.80]
	Diameter ±0.002” [±0.05mm]	0.210 [5.33]	0.250 [6.35]	0.250 [6.35]	0.250 [6.35]	0.250 [6.35]	0.375 [9.53]	0.375 [9.53]	0.375 [9.53]	0.500 [12.70]	0.500 [12.70]	0.500 [12.70]
	Lead Spacing ±0.015” [±0.4mm]	0.025 [0.64]	0.032 [0.81]	0.025 [0.64]	0.032 [0.81]	0.025 [0.64]	0.032 [0.81]	0.032 [0.81]	0.032 [0.81]	0.032 [0.81]	0.032 [0.81]	0.032 [0.81]

* Moisture Sensitivity Level: MSL - 1

Available Options (Consult Factory)

Wide TCR Range: Low and High TC configurations from -20ppm/ºC to +6000ppm/ºC. Down to 1ppm/ºC available.
High Stability: High stability version with maximum resistance change of ± 20ppm/year under normal conditions.
Fast Rise Time: Low reactance design for fast rise time and extended frequency response.
Special Testing Requirements
Special Pulse Requirements

KEY FEATURES:

Low TCR ±2ppm/°C
Temperature Coefficients of ± 2ppm/°C
Temperature Range -55°C to +145°C
Resistance to 6 Mega-Ohms
Resistance Tolerance starting at ± 0.005%
Long Term Stability / 100ppm/year

High TCR Available - Platinum & Balco Wire
Matched Resistance Sets to ± 0.001 and
± 0.5 ppm/°C
100% Acceptance Tested
RoHS Compliant
Options available: Wide TCR Range,
High Stability and Fast Rise Time

APPLICATIONS:

Smart Grid Metering
Power Inverters
Engine Sensors
Temperature Sensors

PRODUCT SERIES (RWP)	RESISTANCE(Ω)	POWER RATING(W)	TOLERANCE ¹	TEMPERATURE COEFFICIENT	TEMPERATURE RANGE ¹
Radial	Up to 1M	0.125 to 0.300	± 0.005% to 1%	>100 Ω : ± 10ppm/°C 10 Ω to 100 Ω : ± 20ppm/°C <10 Ω : ± 30ppm/°C	- 55°C to + 145°C
Axial	Up to 6M	0.06 to 2.00	± 0.005% to 1%		- 55°C to + 145°C

¹ See Power Derating Curve