Flame-Proof Power Metal Oxide Film Resistors
Key Features
Type ROX Series
High Power
with Small
Size for Space
Saving
Excellent Long
Term Stability
Complete
Flameproof
The resistive element comprises a metal oxide film deposited on a ceramic
Construction
former. The element is protected by a flameproof coating which will withstand
overload conditions without flame or mechanical damage. They are
Controlled
recommended for use in applications such as line protection etc
Temperature
Capability
Characteristics Electrical
Solvent
Rated Max. Max. Dielectric Resistance Operating
Resistant Coat
Type Power @ Working Overload Withstand Range Temp.
70C Voltage Voltage Voltage Range
and Code
ROX025 0.25W 250V 400V 250V 0.3 ~ 50K
ROX05 0.5W 250V 400V 250V 0.3 ~ 330K
Special Lead
ROX1 1W 350V 600V 350V 0.1 ~ 470K
Formations
ROX2 2W 350V 600V 350V 0.1 ~ 560K
Possible
ROX3 3W 500V 800V 500V 5.0 ~ 100K
ROX5 5W 750V 1000V 750V 5.0 ~ 150K
ROX7 7W 750V 1000V 750V 20 ~ 150K
ROX8 8W 750V 1000V 750V 30 ~ 200K
ROX9 9W 750V 1000V 750V 50 ~ 200K
ROX05S 0.5W 250V 400V 250V 0.3 ~ 50K
ROX1S 1W 350V 600V 350V 0.3 ~1M0
ROX2S 2W 350V 600V 350V 0.3 ~ 1M0
ROX3S 3W 350V 600V 350V 0.3 ~ 1M0
ROX4S 4W 500V 800V 500V 5.0 ~ 100K
ROX5SS 5W 500V 800V 500V 5.0 ~ 100K
ROX5S 5W 500V 800V 500V 5.0 ~ 150K
Resistors shall have a rated direct-current (DC) continuous working voltage or an
approximate sine-wave root-mean-square (RMS) alternating-current (AC) continuous
working voltage at commercial line frequency and waveform corresponding to the
power rating , as determined from the following formula :
RCWV = P x R
Where : RCWV = Rated DC or RMS AC continuous working voltage at commercial-line
frequency and waveform (volt)
P = Power Rating (watt)
R = Nominal Resistance (ohm)
Rated Voltage = RCWV or Max. Working Voltage, whichever is smaller
Dimensions in Dimensions Shown for
1773271 Rev. H 11/2020
For Email, phone or live chat,
millimetres unless reference purposes only.
go to: www.te.com/help
otherwise specified Specifications subject to
change
Small Size Normal Size
-55 ~ 155C Flame-Proof Power Metal Oxide Film Resistors
Environmental Characteristics
Test Methods
Characteristics Specification
( JIS C 5201-1 )
5.1 The limit of error of
Must be within the specified measuring apparatus shall not
DC. Resistance
tolerance exceed allowable range or 5% of
resistance tolerance
5.2 Natural resistance change per
TCR
temp. degree centigrade.
Range
(PPM/C)
. ~ 200 R -R
Temperature
x 10 (PPM/ )
. ~ K 350 R (t -t )
Coefficient
R : Resistance value at room
101K ~ 1M -700
temperature (t )
1.1M ~ 10M -1500
R : Resistance value at room temp.
plus 100 (t )
5.5 Permanent resistance change
Resistance change rate is after the application of a
Noral Size : % + .5 Max. potential of 2.5 times RCWV or
Short time
Sall Size : % + .5 Max. the max. overload voltage
overload
with no evidence of mechanical respectively specified in the
damage above list, whichever less for 5
seconds
5.7 Resistors shall be clamped in
the trough of a 90 metallic V-
Dielectric No evidence of flashover block and shall be tested at AC
Withstanding mechanical damage, arcing or potential respectively specified in
Voltage insulation break down the electrical characteristics table
for
60 + 10/ -0 seconds
6.1 Direct load:
Resistance to a 2.5 kgs direct load
for 10 secs. in the direction of the
longitudinal axis of the terminal
leads
Twist test:
No Evidence of mechanical Terminal leads shall be bent
Terminal Strength
damage through 90 at point of about
6mm from the body of the
resistor and shall be rotated
through 360 about the original
axis of the bent terminal in
alternating direction for a total of
3 rotations.
6.4 Permanent resistance change
Resistance change rate is: when leads immersed to 3.2 mm
Resistance to
% + .5 Max. with o to 4.8 mm from the body in
soldering heat
evidence of mechanical damage 350 10 solder for 3 0.5
seconds
6.5 The area covered with a new ,
smooth, clean , shiny and
continuous surface free from
Solderability 95 % coverage Min. concentrated pinholes.
Test temp. of solder: 245 3
Dwell time in solder : 2 ~ 3
seconds
Dimensions in Dimensions Shown for
1773271 Rev. H 11/2020
For Email, phone or live chat,
millimetres unless reference purposes only.
go to: www.te.com/help
otherwise specified Specifications subject to
change