Revision 200809
VITROHM PORTUGUESA, Lda. - Est.Nacional 249-4, Trajouce - 2765-653 S. Domingos de Rana - PORTUGAL
Tel: + 351 214 457 700 -Fax: + 351 214 457 755 -Germany Sales Tel: + 0049 4121 870 103 - e-mail:vitrohm.support@yageo.com - www.vitrohm.com
Series RXB
Power Wirewound Resistors
Non Flammable
VITROHM
Characteristics:
Non Flammable, Excellent Heat Resistance, Easy to mount
Technical Specifications Power Derating Curve
Characteristics Test methods Specifications
Power rating load JIS-5202 5-4 hold the resistor horizontally and load the specified
power for 30 minutes
Temperature 350℃ max
Dielectric
withstanding voltage
JIS-C-5202 5-7 AC1000V 1 minute No evidence of mechanical damage or insulation
breakdown
Short-time overload JIS-C-5202 5-5 1000% rated power 5 seconds No evidence of mechanical damage，
△R≤±（2%R+0.05Ω）
Termina l s tren gth JIS-C-5202 6-1 4.5Kgf 30 seconds No evidence of mechanical damage
Solderability JIS-C-5202 6-5 270℃±10℃，5±0.5s。 75% coverage min
Vibration JIS-C-5202 6-3 1.5mm 10～55Hz/1minute X,Y,Z 2hours each No evidence of mechanical damage
Heat resistance JIS-C-5202 7-2 350℃±5℃ 2hours No deterioration of protective coatings or markings
△R≤±（2%R+0.05Ω）
Heat shock JIS-C-5202 7-3 power rating load 30 minutes-- -55℃ 15 minutes No evidence of mechanical damage，
△R≤±（2%R+0.05Ω）
Load life in humidity JIS-C-5202 7-9 40℃±2℃，90%～95% 10% rated power load
90 minutes ON 30 minutes OFF 500 hours
No evidence of mechanical
damage，△R≤±（2%R+0.05Ω）。insulation
resistance 10MΩmin
Load life JIS-C-5202 7-10 100% rated power load 90 minutes ON 30
minutes OFF 500 hours.
No deterioration of protective coatings or
markings，△R≤±（5%R+0.05Ω）
Flame retardant JIS-C-5202 7-13 100～600% rated power load No evidence of flaming or arcing
Dimensions(mm)
Type
Power rating A L1 L W
RXB20 30W 64 51 32 5
RXB21 40W 83 70 51 5
RXB22 55W 120 108 89 5
RXB23 70W 152 140 120 6
RXB24 95W 184 171 152 6
Dimensions
Type Power
rating
Resistors
range
Resistance
tolerance
Operating
temp. range
RXB20 30W 0R1 - 7K5
RXB21 40W 0R1 - 10K
RXB22 55W 0R1 - 30K
RXB23 70W 0R1 - 47K
RXB24 95W 0R1 - 60K
R ≥ 1Ω
± 5% (J)
R ≤ 1Ω
± 10% (K)
-55°C ~
200°C
Revision 200809
VITROHM PORTUGUESA, Lda. - Est.Nacional 249-4, Trajouce - 2765-653 S. Domingos de Rana - PORTUGAL
Tel: + 351 214 457 700 -Fax: + 351 214 457 755 -Germany Sales Tel: + 0049 4121 870 103 - e-mail:vitrohm.support@yageo.com - www.vitrohm.com
Characteristics Test methods Specifications
Power rating load JIS-5202 5-4 hold the resistor horizontally and load the specified
power for 30 minutes
Temperature 350℃ max
Dielectric
withstanding voltage
JIS-C-5202 5-7 AC1000V 1 minute No evidence of mechanical damage or insulation
breakdown
Short-time overload JIS-C-5202 5-5 1000% rated power 5 seconds No evidence of mechanical damage，
△R≤±（2%R+0.05Ω）
Terminal strength JIS-C-5202 6-1 4.5Kgf 30 seconds No evidence of mechanical damage
Solderability JIS-C-5202 6-5 270℃±10℃，5±0.5s。 75% coverage min
Vibration JIS-C-5202 6-3 1.5mm 10～55Hz/1minute X,Y,Z 2hours each No evidence of mechanical damage
Heat resistance JIS-C-5202 7-2 350℃±5℃ 2hours No deterioration of protective coatings or markings
△R≤±（2%R+0.05Ω）
Heat shock JIS-C-5202 7-3 power rating load 30 minutes-- -55℃ 15 minutes No evidence of mechanical damage，
△R≤±（2%R+0.05Ω）
Load life in humidity JIS-C-5202 7-9 40℃±2℃，90%～95% 10% rated power load
90 minutes ON 30 minutes OFF 500 hours
No evidence of mechanical
damage，△R≤±（2%R+0.05Ω）。insulation
resistance 10MΩmin
Load life JIS-C-5202 7-10 100% rated power load 90 minutes ON 30
minutes OFF 500 hours.
No deterioration of protective coatings or
markings，△R≤±（5%R+0.05Ω）
Flame retardant JIS-C-5202 7-13 100～600% rated power load No evidence of flaming or arcing
Series RXB1 VITROHM
Power Wirewound Resistors
Non Flammable
Temperaure Rise Curve Derating Curve
Characteristics: Non Flammable, Excellent Heat Resistance, Easy to mount
Characteristics:
Tol. 5% (< 1R tol. 10% )
Technical Specifications:
Critical Dimensions (mm)
Type P
25
Rate
power Resistance Range VOLT
(V)
RES.
(kΩ)
Temperature
Range L L
1
L
2
D
(max)
d
(max)
H
RXB1-40 40W 0R1 - 6K8 360 3.2 50 67 86 37 10 5.5×10
RXB1-65 65W 0R1 - 18K 960 14 90 107 126 37 10 5.5×10
RXB1-90 90W 0R1 - 27K 1400 21 120 137 156 37 10 5.5×10
RXB1-180 180W 0R1 - 47K 1900 20
-50°C to
250°C
150 170 190 59 12 6.5×10
Series RXB2 V I T R O H M
Temperature Rise Curve Derating Curve
400
300
200
100
20 40 60 80 100 120 (%)
(%)
100
80
60
40
20
50 100 150 200 250 300 (ºC)
Technical Specifications:
Type P25 Rate power Resistance range Critical Temperature range
VOLT (V) RES.(kΩ)
RXB2-90 90W 0R1 – 27K 5% (<1R 10%) 1400 21 -50 ºC to 250ºC
Revision 201101
VITROHM PORTUGUESA, Lda. – Est. Nacional 249-4, Trajouce – 2765-653 S. Domingos de Rana – PORTUGAL
Tel:+ 351 214 457 700 - Fax:351 214 457 755 – Germany Sales Tel:+ 0049 4121 870 103 - e-mail:vitrohm.support@yageo.com – www.vitrohm.com
Characteristics: Non Flammable, Excellent Heat Resistance, Easy to mount
Characteristics Test methods Specifications
Power rating load JIS-5202 5-4 hold the resistor horizontally and load the
specified power for 30 minutes
Temperature 350℃ max
Dielectric withstanding voltage JIS-C-5202 5-7 AC1000V 1 minute No evidence of mechanical damage or insulation
breakdown
Short-time overload JIS-C-5202 5-5 1000% rated power 5 seconds No evidence of mechanical damage，
△R≤±（2%R+0.05Ω）
Terminal strength JIS-C-5202 6-1 4.5Kgf 30 seconds No evidence of mechanical damage
Solderability JIS-C-5202 6-5 270℃±10℃，5±0.5s。 75% coverage min
Vibration JIS-C-5202 6-3 1.5mm 10～55Hz/1minute X,Y,Z 2hours each No evidence of mechanical damage
Heat resistance JIS-C-5202 7-2 350℃±5℃ 2hours No deterioration of protective coatings or
markings △R≤±（2%R+0.05Ω）
Heat shock JIS-C-5202 7-3 power rating load 30 minutes-- -55℃ 15
minutes
No evidence of mechanical damage，
△R≤±（2%R+0.05Ω）
Load life in humidity JIS-C-5202 7-9 40℃±2℃，90%～95% 10% rated power load
90 minutes ON 30 minutes OFF 500 hours
No evidence of mechanical
damage，△R≤±（2%R+0.05Ω）。insulation
resistance 10MΩmin
Load life JIS-C-5202 7-10 100% rated power load 90 minutes ON 30
minutes OFF 500 hours.
No deterioration of protective coatings or
markings，△R≤±（5%R+0.05Ω）
Flame retardant JIS-C-5202 7-13 100～600% rated power load No evidence of flaming or arcing
Power Wirewound Resistors
Non Flammable
1,7
3
20,5
±2
37,2
±1
max.
10
120
±2,2
2
3
3
±1
108
±1
8,3
6,3
RXB2 90W
33R 5% Z
min.
5
