r
esIsTor
w
Irewound
c
hassIs
m
ounT
rwc s
erIes
k
ey
F
eatureS
• Resistances from 0.005 to 250kOhms
• Tolerance to ± 0.01%
• High Temperature: -55ºC to +275ºC
• Low TCR: ± 20ppm/ ºC
• Power Rating 5 to 300 Watts
• Excellent Pulse Handling
• Non-Inductive windings available
• Four Terminal Versions Available (Call Factory)
a
pplicationS
• Motor Control
• Braking Systems
• Welding
• X-Ray
p
roduct
S
ummary
POWER RATING
(W @ 25ºC)
PRODUCT
SERIES
(RWC)
G1
G2
G3
G4
RESISTANCE
RANGE (Ω) 1
0.01 to 22K
0.01 to 47K
0.01 to 90K
0.01 to 250K
FREE
AIR
4.5
7.5
12
20
DIELECTRIC
STRENGTH
1500 VAC
1500 VAC
2500 VAC
3500 VAC
TEMPERATURE
COEFFICIENT
>10Ω: ± 20ppm/ºC
1Ω to 10Ω: ± 50ppm/ºC - 55ºC to + 275ºC
<1Ω: Call Factory
TEMPERATURE
RANGE
COMMERCIAL
7.5
a
12.5
a
25
b
50
c
MIL
5
a
10
a
20
b
30
c
1
a
TOLERANCE
: ± 0.01 to ± 10% (1% Standard)
For non-inductive windings, divide maximum resistance by 2
Heatsink required: 0.040 [1.0] Aluminum Plate, 129 in
2
[832 cm
2
] or equiv.
a
Vailable
o
ptionS
(Consult Factory)
•
•
Special Testing Requirements
Special Pulse Requirements
b
Heatsink required: 0.040 [1.0] Aluminum Plate, 167 in
2
[1077 cm
2
] or
equiv.
Heatsink required: 0.059 [1.5] Aluminum Plate, 291 in
2
[1877 cm
2
] or
equiv.
c
d
e
Heatsink required: 0.125 [3.2] Aluminum Plate, 294in
2
[1896cm
2
] or equiv.
H
ow to
o
rder
RWC
RESISTOR WIRE-
WOUND CHASSIS
MOUNT
Heatsink required: 0.125 [3.2] Aluminum Plate, 895 in
2
[5780 cm
2
] or
equiv.
N
WINDINGS
G1
PACKAGE CODE,
WATTS (COMMERCIAL),
RESISTANCE
G1, 7.5W, [0.01 to 22k]Ω
G2, 12.5W, [0.01 to 47k]Ω
G3, 25.0W, [0.01 to 90k]Ω
G4, 50.0W, [0.01 to 250k]Ω
U
TEMPERATURE
COEFFICIENT OF
RESISTANCE (TCR)
U = ± 20ppm/°C
Q = ± 50ppm/°C
Z = Special
003K8
RESISTANCE
F
TOLERANCE
S
PACKING
S = Standard
N = Non-Inductive
038R0 = 38Ω
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.
T= ± 0.01%
Q= ± 0.02%
A= ± 0.05%
B= ± 0.1%
F= ± 1.0%
J= ± 5.0%
K= ± 10.0%
S = Bulk
For Tin/Lead coated leads, add "- Pb" to part number.
Standard Termination Finish: Matte Tin (Sn)
Example P/N: RWCNG1U003K8FS is Resistor Wirewound Chassis Mount, Non-Inductive, 7.5W, ±20ppm/ºC, 3.8KΩ, ±1.0%, bulk
40
www.johanson dielectrics.com
r
esIsTor
w
Irewound
c
hassIs
m
ounT
rwc s
erIes
m
ecHanical
c
HaracteriSticS
Package Code
A
(Tolerances)
±0.005 [±0.13 mm]
B
(Tolerances)
±0.005 [±0.13 mm]
C
(Tolerances)
±0.031 [±0.79 mm]
D
(Tolerances)
±0.062 [±1.57 mm]
E
(Tolerances)
±0.015 [±0.38 mm]
F
(Tolerances)
±0.015 [±0.38 mm]
G
(Tolerances)
±0.015 [±0.38 mm]
H
(Tolerances)
±0.010 [±0.25 mm]
G1
0.444 [11.28]
0.490 [12.45]
0.600 [15.24]
1.125 [28.58]
0.334 [8.48]
0.646 [16.41]
0.320 [8.13]
0.065 [1.65]
0.140 [3.56]
0.078 [1.98]
0.093 [2.36]
0.078 [1.98]
0.050 [1.27]
0.266 [6.76]
0.245 [6.22]
0.051 [1.30]
0.085 [2.16]
G2
0.562 [14.27]
0.625 [15.88]
0.750 [19.05]
1.320 [33.53]
0.430 [10.92]
0.800 [20.32]
0.400 [10.16]
0.075 [1.91]
0.190 [4.83]
0.093 [2.36]
0.093 [2.36]
0.102 [2.60]
0.080 [2.03]
0.312 [7.93]
0.312 [7.92]
0.098 [2.49]
0.160 [4.06]
G3
0.719 [18.26]
0.781 [19.84]
1.062 [26.97]
1.870 [47.50]
0.530 [13.46]
1.080 [27.43]
0.560 [14.22]
0.085 [2.16]
0.260 [6.60]
0.172 [4.37]
0.125 [3.18]
0.125 [3.18]
0.080 [2.03]
0.438 [11.13]
0.391 [9.93]
0.098 [2.49]
0.185 [4.70]
G4
1.563 [39.70]
0.844 [21.44]
1.968 [49.99]
2.760 [70.10]
0.615 [15.62]
1.140 [28.96]
0.615 [15.62]
0.085 [2.16]
0.300 [7.62]
0.196 [4.98]
0.125 [3.18]
0.125 [3.18]
0.080 [2.03]
0.438 [11.13]
0.422 [10.72]
0.098 [2.49]
0.185 [4.70]
Dimensions
Inches [mm]
J
(Tolerances)
±0.010 [±0.25 mm]
K
(Tolerances)
±0.010 [±0.25 mm]
L
(Tolerances)
±0.005 [±0.13 mm]
M
(Tolerances)
±0.015 [±0.38 mm]
N
(Tolerances)
±0.006 [±0.15 mm]
O
(Tolerances)
±0.062 [±1.57 mm]
P
(Tolerances)
±0.031 [±0.79 mm]
Q
(Tolerances)
±0.002 [±0.05 mm]
R
(Tolerances)
±0.031 [±0.79 mm]
MIL-R-39009 / MIL-R-18546
RER-60 / RE-60
RER-65 / RE-65
RER-70 / RE-70
RER-75 / RE-75
www.johanson dielectrics.com
41
r
esIsTor
w
Irewound
c
hassIs
m
ounT
rwc s
erIes
e
nVironmental
p
erFormance
Environmental Performance (MIL-STD 202)
Vibration
Load Life
Moisture Resistance
Dielectric
Storage
Shock
Thermal Shock
5X Overload (5s)
CONSTRUCTION NOTES:
Centerless ground ceramic core
Tinned copper or copperweld leads
All welded terminations
High Temperature epoxy molding compound
Anodized aluminum housing
Moisture Sensitivity Level: MSL-1
D
R
± 0.1 % + 0.05
Ω
± 1% + 0.05
Ω
± 0.2 % + 0.05
Ω
± 0.2 % + 0.05
Ω
± 0.2 % + 0.05
Ω
± 0.1 % + 0.05
Ω
± 0.2 % + 0.05
Ω
± 0.2 % + 0.05
Ω
Power Derating Curve
120
Rated Power ( % )
100
Mo
un
ted
80
on
He
a
60
G1 & G2
G3
tsi
nk
Free-Air Derating:
G1, G2, G3, G4
40
G4
20
0
0
50
100
150
200
250
300
350
Ambient Temperature (°C)
This datasheet is subject to change without notice.
42
www.johanson dielectrics.com
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Johanson
:
RWCSG4U500R0FS RWCSG4U300R0FS RWCSG4U750R0FS RWCSG1U005K0FS RWCSG3Q000R2FS
RWCSG1Q003R3FS RWCSG2U075R0FS RWCSG4U005K0FS RWCSG4U012R0FS RWCSG4Q010R0FS
RWCSG1Q002R5FS RWCSG3U010K0FS RWCSG1U015R0FS RWCSG1Q001R5FS RWCSG2U250R0FS
RWCSG4U001K5FS RWCSG2U040R0FS RWCSG1U015K0FS RWCSG1Q007R5FS RWCSG2U020K0FS
RWCSG2Q005R0FS RWCSG1U010K0FS RWCSG2Q00R15FS RWCSG1U330R0FS RWCSG1Q005R0FS
RWCSG3Q007R5FS RWCSG1U050R0FS RWCSG3Q001R0BS RWCSG3Q00R15FS RWCSG4Q002R0FS
RWCSG1U500R0FS RWCSG4U050R0FS RWCSG4Q002R5FS RWCSG2U002K0FS RWCSG3U750R0FS
RWCSG1Q000R2FS RWCSG4Q003R0FS RWCSG2Q010R0FS RWCSG4U030R0FS RWCSG3Q00R25FS
RWCSG3U050R0FS RWCSG3U250R0FS RWCSG4U100R0FS RWCSG1Q000R3FS RWCSG2Q00R25FS
RWCSG3Q002R0BS RWCSG1U001K0FS RWCSG1U390R0FS RWCSG3U002K0FS RWCSG4U025K0FS
RWCSG2U050R0FS RWCSG4U200R0FS RWCSG3U001K0FS RWCSG3Q002R0FS RWCSG3Q000R1FS
RWCSG2U010K0FS RWCSG1U001K5FS RWCSG2U025R0FS RWCSG4U020R0FS RWCSG2U150R0FS
RWCSG2Q003R3FS RWCSG3U015R0FS RWCSG3Q000R5FS RWCSG4U015R0FS RWCSG1Q003R0FS
RWCSG1U030R0FS RWCSG1U100R0FS RWCSG1U250R0FS RWCSG4U150R0FS RWCSG1U750R0FS
RWCSG4U025R0FS RWCSG3U015K0FS RWCSG4Q00R15FS RWCSG3U025R0FS RWCSG2Q001R0FS
RWCSG2Q003R0FS RWCSG4U002K5FS RWCSG4U250R0FS RWCSG2Q001R5FS RWCSG2U030R0FS
RWCSG2U015R0FS RWCSG1U002K0FS RWCSG3Q000R3FS RWCSG2U002K5FS RWCSG3U030K0FS
RWCSG1U020R0FS RWCSG1U040R0FS RWCSG3Q001R5FS RWCSG1Q001R0FS RWCSG4Q000R1FS
RWCSG1Q000R5FS RWCSG4Q003R3FS RWCSG2Q000R3FS RWCSG2U330R0FS RWCSG3Q010R0FS
RWCSG2Q002R5FS RWCSG4U010K0FS RWCSG2U001K0FS RWCSG3U001K5FS RWCSG3U150R0FS
创意市集
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
