CEMENT THERMAL FUSIBLE RESISTORS
Derating Curve:
Type
Power
Rating at
70°C
2W
Resistance
Range
0.5Ω ~ 470Ω
W±1
9
D±1
10
L±1
25
H±5
36
+0.02
d1
-0.05
0.6
0.75
d2 ± 0.05
FWI
* More details, please see pages 78-79.
Temperature coefficient
Short-time overload
Terminal strength
Resistance to soldering heat
Solderability
Load life in humidity
Load life
≥20Ω
± 350PPM/°C; <20Ω ± 400PPM/°C Max.
∆R/R ≤
±(5.0% + 0.05Ω) Max., with no evidence of mechanical damage.
No evidence of mechanical damage.
∆R/R ≤
±(1.0% + 0.05Ω) Max., with no evidence of mechanical damage.
Min. 95% coverage
∆R/R ≤
±(5.0% + 0.05Ω) Max., with no evidence of mechanical damage.
∆R/R ≤
±(5.0% + 0.05Ω) Max., with no evidence of mechanical damage.
THERMAL FUSING POWER FILM FIXED RESISTORS
Dimension (mm):
Type
TFRC
L
(Max.)
17
Power
Rating
at 70°C
2W
W
(Min.)
17
W
1
(Min.)
5
H
(Min.)
7.5
Ød
1
± 0.02
0.7
Ød
2
± 0.02
1.0
Derating curve
Type
TFRC
Resistance
Range
360Ω+360Ω
T.C.R.
(PPM/°C)
± 350
T
F
(°C)
91
Ir
(A)
10
Ur
(V)
250
*** other value can be supplied on a case to case basis.
Remark :
T
F
(°C) = Rated Functioning Temperature
Ir (A) = Rated Current
Ur (V) = Rated Voltage
2007 - 2008
Page 45
THERMAL FUSING WIRE-WOUND FIXED RESISTORS
Type
TFR
Power
Rating
at 70°C
1W
Resistance
Range
4Ω7 ± 5%
T
F
(°C)
130
T
H
/ T
C
(°C)
102
T
M
(°C)
180
Ir
(A)
2
Ur
(V)
250
D
5.5 ± 0.5
5.5 + 1
- 0.5
L
14 ± 1
11(Max.)
H
(Min.)
12
12
h
1
(Min.)
3.5
3.5
d ± 0.02
0.53
0.53
Current
rating
2A
1A
Remark:
T
H
/
T
C
(°C) = Holding Temperature
T
M
(°C) = Max. Temperature Limit
T
F
(°C) = Rated Functioning Temperature
Ir (A) = Rated Current
Ur (V) = Rated Voltage
Ordering Procedure: (Ex.: TFR 1W 5%, 4Ω7, B/B)
T
F
R
0
1
W
J
W
4
7
J
B
0
0
Product Type:
TFR0 = TFR
FWI0 = FWI
TFRC = TFRC
Resistance Value:
Wattage:
1W = 1W
2W = 2W
E-24 series: the 1
st
digit to denote
product type:
W
= Wire wound type
P
= Power film type
The 2
nd
and 3
rd
digits are for the
significant figures of the resistance
and the 4
th
digit denotes number of
zeros:
“J” ~ 0.1, “K” ~ 0.01
Ex.
4.7Ω ~
47J, 4.7KΩ
~
472
Tolerance:
J = ±5%
K = ±10%
* More explanation on part no, please see details on pages 80-81.
Packing Type:
B = Bulk in poly - bag
Packing Quantity:
Temperature coefficient
Short time overload
Insulation Resistance
Dielectric withstanding voltage
Terminal strength
Humidity (steady state)
Load life in humidity
Load life
± 400 PPM/°C
∆R/R ≤
± (2% + 0.05Ω) Max. with no evidence of mechanical damage.
20MΩ Max., with no evidence of mechanical damage.
No evidence of flashover, mechanical damage, arcing or insulation break down.
with no evidence of mechanical damage.
∆R/R ≤
± (3% + 0.05Ω) Max. with no evidence of mechanical damage.
∆R/R ≤
± (5% + 0.05Ω) Max. with no evidence of mechanical damage.
∆R/R ≤
± (5% + 0.05Ω) Max. with no evidence of mechanical damage.
0 = for Bulk/Box packing
Special Feature:
0 = Standard product
1 = Non-Inductive
* More details, please see pages 78-79.
Page 46
2007 - 2008
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