r
esIsTor
w
Irewound
P
recIsIon
rwP s
erIes
k
ey
F
eatureS
• Temperature Coefficients of ± 2ppm/ºC
• 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/ºC
• 100% Acceptance Tested
• Options available: Wide TCR Range, High Stability and Fast
Rise Time
a
pplicationS
• Smart Grid Metering
• Power Inverters
• Engine Sensors
• Temperature Sensors
p
roduct
S
ummary
PRODUCT SERIES
(RWP)
Radial
Axial
RESISTANCE
(Ω)
Up to 1M
Up to 6M
POWER RATING
(W)
0.125 to 0.500
0.06 to 2.00
TOLERANCE
1
± 0.005% to
1%
TEMPERATURE
COEFFICIENT
>100Ω : ± 10ppm/°C
- 55ºC to + 145ºC
10Ω to100Ω : ±
20ppm/°C
TEMPERATURE
RANGE
1
a
Vailable
o
ptionS
•
(Consult Factory)
180
160
<10Ω : ± 30ppm/°C
1
See Power Derating Curve
Rated Power ( % )
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
Power Derating Curve
1% /
0.5%
140
120
100
80
60
40
20
0
0
20
40
•
0.05%
/ 0.1%
/ 0.02%
Toleran
c
Tolera
n
ce
e
•
•
•
0.01% T
o
lerance
0.005% Tolera
nce
60
80
100
120
140
160
H
ow to
o
rder
RWP
RESISTOR WIREWOUND
PRECISION
Ambient Temperature (°C)
A01
PACKAGE CODE,
WATTS, VOLTAGE
Radial
B01, 0.125W, 150Vmax
B02, 0.250W, 150Vmax
Axial
A01, 0.06W, 75Vmax
A02, 0.08W, 100Vmax
See Table
W
TEMPERATURE COEFFICIENT
OF RESISTANCE (TCR)
W = ± 10ppm/ºC
U = ± 20ppm/ºC
S = ± 30ppm/ºC
Z = special
038K0
RESISTANCE
0R038 = 0.038Ω
003K8 = 3.8KΩ
038K0 = 38.0KΩ
380K0 = 380.0KΩ
003M8 = 3.8MΩ
Letter denotes decimal place.
R = decimal., “K” 10
3
, “M” 10
6
Remaining 4 digits are
significant or placeholders
F
TOLERANCE
V = ± 0.005%
T = ± 0.01%
Q = ± 0.02%
A = ± 0.05%
B = ± 0.1%
F = ± 1.0%
S
PACKING
S = Bulk
T = Tape & Reel
For Tin/Lead coated leads, add “-Pb” to part number.
Standard Termination Finish: Matte Tin(Sn)
Example P/N: RWPA01W038K0FS is Resistor Wirewound Precision 0.06W, 75V, ±10ppm/°C 38.0KΩ, ±1.0%, bulk
32
www.johanson dielectrics.com
r
esIsTor
w
Irewound
P
recIsIon
rwP s
erIes
r
adial
Package Code
Max Resistance (Ω)
Max Working Voltage (V)
Power Rating (W)
B01
500k
150
0.125
B02
750k
150
0.250
0.150
[3.81]
0.270
[6.86]
0.540
[13.72]
B03
500k
150
0.300
0.102
[2.59]
0.320
[8.13]
0.300
[7.62]
B04
1M
150
0.500
0.160
[4.06]
0.525
[13.34]
0.585
[14.86]
1
Radial Dimensions
Width
±0.010”
[±0.25mm]
0.140
[3.56]
0.250
[6.35]
0.270
[6.86]
Height
Dimensions
Inches [mm]
±0.025”
[±0.64mm]
Length
±0.010”
[±0.25mm]
Lead Diam-
eter
1
±0.002”
[±0.05mm]
Lead Length 1.00” [25.40mm] Min
0.032
[0.81]
0.125
[3.18]
0.032
[0.81]
0.250
[6.35]
0.025
[0.64]
0.150
[3.81]
0.032
[0.81]
0.400
[10.16]
Axial Dimensions
Lead Spacing
±0.015”
[±0.4mm]
Moisture Sensitivity Level: MSL-1
a
Xial
Package Code
Max Resistance (Ω)
Max Working Voltage (V)
Power Rating (W)
A01
75k
75
0.06
0.210
[5.33]
0.100
[2.54]
2
Lead Length 1.50” [38.10mm] Min
A02
150k
100
0.08
0.260
[6.60]
0.125
[3.18]
A03
150k
100
0.08
0.260
[6.60]
0.125
[3.18]
A04
250k
100
0.10
0.375
[9.53]
0.125
[3.18]
A05
250k
100
0.10
0.312
[7.92]
0.156
[3.96]
A06
400k
150
0.12
0.250
[6.35]
0.187
[4.75]
A07
500k
150
0.15
0.295
[7.49]
0.187
[4.75]
A08
500k
100
0.15
0.250
[6.35]
0.250
[6.35]
A09
750k
200
0.175
0.375
[9.53]
0.187
[4.75]
A10
750k
200
0.20
0.450
[11.43]
0.187
[4.75]
A11
1M
200
0.20
0.375
[9.53]
0.250
[6.35]
A12
1M
200
0.20
0.375
[9.53]
0.250
[6.35]
Length
±0.025”
[±0.64mm]
Diameter
Dimensions
Inches [mm]
±0.005”
[±0.13mm]
Lead
Diameter
2
±0.002”
[±0.05mm]
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
Max Resistance (Ω)
Max Working Voltage (V)
Power Rating (W)
A13
1M
250
0.25
0.465
[11.81]
0.210
[5.33]
0.025
[0.64]
A14
1.2M
300
0.25
0.500
[12.70]
0.250
[6.35]
0.032
[0.81]
A15
1.2M
300
0.25
0.500
[12.70]
0.250
[6.35]
0.025
[0.64]
A16
2.5M
400
0.33
0.750
[19.05]
0.250
[6.35]
0.032
[0.81]
A17
2.5M
400
0.33
0.750
[19.05]
0.250
[6.35]
0.025
[0.64]
A18
3.8M
300
0.40
0.500
[12.70]
0.375
[9.53]
0.032
[0.81]
A19
3.8M
400
0.50
0.750
[19.05]
0.375
[9.53]
0.032
[0.81]
A20
6M
600
0.75
1.000
[25.40]
0.375
[9.53]
0.032
[0.81]
A21
6M
800
1.00
1.000
[25.40]
0.500
[12.70]
0.032
[0.81]
A22
6M
900
1.50
1.500
[38.10]
0.500
[12.70]
0.032
[0.81]
A23
6M
1000
2.00
2.000
[50.80]
0.500
[12.70]
0.032
[0.81]
Length
±0.025”
[±0.64mm]
Dimensions
Inches [mm]
Diameter
±0.005”
[±0.13mm]
Lead
Diameter
2
±0.002”
[±0.05mm]
Moisture Sensitivity Level: MSL-1
This datasheet is subject to change without notice.
www.johanson dielectrics.com
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