Flame-Proof Power Metal Oxide Film Resistors
Key Features
Type ROX Series
High Power
with Small
Size for Space
Saving
Excellent Long
Term Stability
Controlled
Temperature
Capability
The resistive element comprises a metal oxide film deposited on a ceramic
former. The element is protected by a flameproof coating which will withstand
overload conditions without flame or mechanical damage. They are
recommended for use in applications such as line protection etc
Characteristics – Electrical
Solvent
Resistant Coat
and Code
Normal Size
Small Size
Special Lead
Formations
Possible
Type
ROX025
ROX05
ROX1
ROX2
ROX3
ROX5
ROX7
ROX8
ROX9
ROX05S
ROX1S
ROX2S
ROX3S
ROX4S
ROX5SS
ROX5S
Rated
Power @
70°C
0.25W
0.5W
1W
2W
3W
5W
7W
8W
9W
0.5W
1W
2W
3W
4W
5W
5W
Max.
Working
Voltage
250V
250V
350V
350V
500V
750V
750V
750V
750V
250V
350V
350V
350V
500V
500V
500V
Max.
Overload
Voltage
400V
400V
600V
600V
800V
1000V
1000V
1000V
1000V
400V
600V
600V
600V
800V
800V
800V
Dielectric
Withstand
Voltage
250V
250V
350V
350V
500V
750V
750V
750V
750V
250V
350V
350V
350V
500V
500V
500V
Resistance
Range
Ω
0.3 ~ 50K
0.3 ~ 330K
0.1 ~ 470K
0.1 ~ 560K
5.0 ~ 100K
5.0 ~ 150K
20 ~ 150K
30 ~ 200K
50 ~ 200K
0.3 ~ 50K
0.1 ~ 270K
0.1 ~ 470K
0.3 ~ 560K
5.0 ~ 100K
5.0 ~ 100K
5.0 ~ 560K
Operating
Temp.
Range
-55 ~ 155°C
Complete
Flameproof
Construction
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
1773271 Rev. F 12/2018
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
Flame-Proof Power Metal Oxide Film Resistors
Environmental Characteristics
Characteristics
DC. Resistance
Specification
Must be within the specified
tolerance
Range Ω
Temperature
Coefficient
1773271 Rev. F 12/2018
0.1Ω ~ 12Ω
12.1Ω ~ 100K
101K ~ 1M
1.1M ~ 10M
TCR
(PPM/°C)
±200
±350
-700
-1500
Short time
overload
Resistance change rate is
Normal Size : ± (1% + 0.05Ω) Max.
Small Size : ± (2% + 0.05Ω) Max.
with no evidence of mechanical
damage
Dielectric
Withstanding
Voltage
No evidence of flashover
mechanical damage, arcing or
insulation break down
Terminal Strength
No Evidence of mechanical
damage
Resistance to
soldering heat
Resistance change rate is:
± (1% + 0.05Ω) Max. with no
evidence of mechanical damage
Solderability
95 % coverage Min.
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
Test Methods
( JIS C 5201-1 )
5.1 The limit of error of
measuring apparatus shall not
exceed allowable range or 5% of
resistance tolerance
5.2 Natural resistance change per
temp. degree centigrade.
R₂-R₁
R₁(t₂-t₁)
x 10⁶ (PPM/℃)
R₁: Resistance value at room
temperature (t₁)
R₂: Resistance value at room temp.
plus 100 ℃ (t₂)
5.5 Permanent resistance change
after the application of a
potential of 2.5 times RCWV or
the max. overload voltage
respectively specified in the
above list, whichever less for 5
seconds
5.7 Resistors shall be clamped in
the trough of a 90° metallic Vblock and shall be tested at AC
potential respectively specified in
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:
Terminal leads shall be bent
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
when leads immersed to 3.2 mm
to 4.8 mm from the body in
350℃ ± 10 ℃ solder for 3 ± 0.5
seconds
6.5 The area covered with a new ,
smooth, clean , shiny and
continuous surface free from
concentrated pinholes.
Test temp. of solder: 245℃ ± 3℃
Dwell time in solder : 2 ~ 3
seconds
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Flame-Proof Power Metal Oxide Film Resistors
Environmental Characteristics (continued)
Characteristics
Specification
Resistance to
Solvent
No deterioration of protective
coatings and marking
Temperature
cycling
Resistance change rate is:
± (2% + 0.05Ω) Max. with no
evidence of mechanical damage
Resistance Value
Load life in
humidity
Less than 100KΩ
100KΩ or more
Resistance Value
Load life
Less than 100KΩ
100KΩ or more
Pulse overload
Test Methods
( JIS C 5201-1 )
6.9 Specimens shall be immersed
in a bath of trichroethane
completely for 3 minutes with
ultrasonic
7.4 Resistance change after
continuous 5 cycles for duty
shown below:
Step
Step
Step
1
1
1
2
2
2
3
3
3
4
4
4
Resistance
Value
Less than
100KΩ
100KΩ or more
7.9 Resistance change after 1,000
hours operating at RCWV with
duty cycle of (1.5 hours "on", 0.5
hour "off") in a humidity test
chamber controlled at 40 ℃ ± 2
℃ and 90 to 95 % relative
humidity
Resistance
Value
Less than
100KΩ
100KΩ or more
7.10 Permanent resistance
change after 1,000 hours
operating at RCWV with duty
cycle of (1.5 hours "on", 0.5 hour
"off") at 70℃ ± 2℃ ambient
Resistance change rate is:
Normal Size : ± (2% + 0.05Ω) Max.
Small Size : ± (5% + 0.05Ω) Max.
with no evidence of mechanical
damage
5.8 Resistance change after
10,000 cycles (1 second "on", 25
seconds "off”) at 4 times RCWV
or the max. pulse overload
voltage
Derating:
In ambient temperatures greater than 70°C the load shall de-rate as shown in
the graph below:
1773271 Rev. F 12/2018
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
Flame-Proof Power Metal Oxide Film Resistors
Construction:
No.
1
2
Name
Basic Body
Resistance Film
3
4
5
6
End Cap
Lead Wire
Joint
Coating
7
Color Code
Material
Rod Type Ceramics
0.1Ω ≤ R ≤ 12Ω : CNP film
10Ω ≤ R ≤ 100kΩ : Metal oxide film
R > 100kΩ : Carbon film
Steel (Tin plated iron surface)
Annealed copper wire coated with tin
By welding
Normal size:
--Insulated & Non-Flame Paint (Color : Gray )
Small size:
--Insulated & Non-Flame Paint (Color : Sea-Blue )
Non-Flame epoxy resin
Dimensions:
Small Size
Normal Size
Type
ROX025
ROX05
ROX1
ROX2
ROX3
ROX5
ROX7
ROX8
ROX9
ROX05S
ROX1S
ROX2S
ROX3S
ROX4S
ROX5SS
ROX5S
D (max.)
2.5
3.5
5
5.5
6.5
8.5
8.5
8.5
8.5
2.5
3.5
5
5.5
6.5
6.5
8
Dimensions (MM)
L (max.)
d ±0.05
7.5
0.54
10
0.54
12
0.70
16
0.70
17.5
0.75
26
0.75
32
0.75
41
0.75
54
0.75
7.5
0.54
10
0.54
12
0.70
16
0.70
17.5
0.75
17.5
0.75
25
0.75
H ±3
28
28
25
28
28
38
38
38
38
28
28
25
28
28
28
38
NB. Pre-formed leads available on request.
1773271 Rev. F 12/2018
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
Flame-Proof Power Metal Oxide Film Resistors
Painting method:
Welding point, terminal and lead wire, is permissible to be exposed without
the outer coated cover. The extent should be within 1/2 of the resistor body
diameter.
Marking:
For 1/4W, 1/2W, 1W, 2W, 3W, 4W, 5W and all of small size Resistors shall be
marked with color coding. colors shall be in accordance with JIS C 0802
For 7W, 8W, 9W marking shall be in text format:
Code description and regulation
1. Wattage rating.
2. Nominal resistance value.
3. Resistance Tolerance.
G: ± 2 %
J: ± 5 %
K: ± 10 %
1773271 Rev. F 12/2018
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
Flame-Proof Power Metal Oxide Film Resistors
Packing Specification:
Small Size
Normal Size
Taping:
Type
ROX025
ROX05
ROX1
ROX2
ROX3
ROX05S
ROX1S
ROX2S
ROX3S
ROX4S
ROX5SS
Style
PT-52
PT-52
PT-52
PT-64
PT-64
PT-52
PT-52
PT-52
PT-64
PT-64
PT-64
O±1
52
52
52
64
64
52
52
52
64
64
64
P
5±0.3
5±0.3
5±0.3
10±0.5
10±0.5
5±0.3
5±0.3
5±0.3
10±0.5
10±0.5
10±0.5
L1-L2
1 Max
1 Max
1 Max
1 Max
1 Max
1 Max
1 Max
1 Max
1 Max
1 Max
1 Max
T
6±1
6±1
6±1
6±1
6±1
6±1
6±1
6±1
6±1
6±1
6±1
Z
1 Max
1 Max
1 Max
1 Max
1 Max
1 Max
1 Max
1 Max
1 Max
1 Max
1 Max
R
0
0
0
0
0
0
0
0
0
0
0
t
4±1
4±1
4±1
5±1
5±1
4±1
4±1
4±1
5±1
5±1
5±1
S
0.5 max
0.5 max
0.5 max
0.5 max
0.5 max
0.5 max
0.5 max
0.5 max
0.5 max
0.5 max
0.5 max
Tape in box packing (Ammopack):
Type
ROX025
ROX05
ROX1
ROX2
ROX3
ROX05S
ROX1S
ROX2S
ROX3S
ROX4S
ROX5SS
C±5
250
260
262
262
256
250
260
262
262
256
256
A±5
75
85
86
92
92
75
85
86
92
92
92
B±5
96
70
80
108
80
96
70
80
108
80
80
Pack Quantity
5000
1000
1000
1000
500
5000
1000
1000
1000
500
500
NB Certain products can be supplied reeled on request.
1773271 Rev. F 12/2018
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
Flame-Proof Power Metal Oxide Film Resistors
Plastic cases in box:
Type
C ±5
A ±5
B ±5
ROX5S
ROX5
36
36
20
20
8
8
Quantity
Plastic Case
Box
100
1000
100
1000
Bulk packaging (plastic bag in inner box):
Type
Qty/Bag
(Pcs)
Qty/Box
(Pcs)
Qty/Carton
Pcs
Box size
LxWxH (±5)
Carton size
LxWxH (±5)
ROX7
8
32
1600
150 x 75 x 33
ROX8
8
32
1600
150 x 75 x 33
ROX9
10
300
1800
200 x 171 x
113
432 x 308 x
215
432 x 308 x
215
520 x 215 x
250
Gross
wt
±2 Kgs
9.5
11.5
15
How To Order
ROX
Common
Part
ROX – Flame
proof power
metal oxide
film resistor
1773271 Rev. F 12/2018
1S
J
Power Rating
Tolerance
Normal size
025 - 1/4W
05 – 1/2W
1 – 1W
2 – 2W
3 – 3W
5 – 5W
7 – 7W
8 – 8W
9 – 9W
Dimensions in
millimetres unless
otherwise specified
100K
Resistance
Value
Special
Request
Small size
05S – 1/2W
1S – 1W
2S – 2W
3S – 3W
4S – 4W
5SS – 5W
5S – 5W
G – 2%
J – 5%
Dimensions Shown for
reference purposes only.
Specifications subject to
change
R33 -0.33Ω
1R0 - 1Ω
10R - 10Ω
100R - 100Ω
1K0 – 1KΩ
(1000Ω)
100K – 100KΩ
(100,000Ω)
BL * – Preformed
Leads
TR Reeled
For Email, phone or live chat,
go to: www.te.com/help
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