CIRCUIT PROTECTORS
CIRCUIT PROTECTORS
FUSIBLE FLAT CHIP
RESISTORS
STRUCTURE
1 Ceramic substrate
2 Top termination
3 Bottom termination
4 Fusible resistive film
5 Protective layer
6 End termination
7 Diffusion barrier (Ni)
8 Solder plating
RF73
IDENTIFICATION
PRODUCT CODE
COATING COLOR
MARKING
Products with Pb-free terminations
meet EU-RoHS requirements
RF73
Brown
Black, 3 digits
TYPE DESIGNATION (HOW TO ORDER)
Contact us when you have control request
for environmental hazardous material other
than the substance specified by EU-RoHS
2A
RF73
T
TD
220
J
TAPING*
TD, TE, BK
STYLE
1J…3A
TERMINATION
NOMINAL
RESISTANCE
3 digits
RESISTANCE
TOLERANCE
J: ( 5ꢀ)
PRODUCT CODE
SURFACE MATERIAL
T: Sn
*Please see “PACKAGING”
(L: Sn/Pb)
FEATURES
DIMENSIONS (mm)
■ Small and light with the same configuration as a flat chip resistor (RK73 series)
■ Works as a resistor in normal operation
TYPE
L
0.2
W
C
d
t
0.1
0.5
RF73 1J
RF73 2A
RF73 2B
RF73 2E
RF73 2H
RF73 3A
1.6
0.8 0.1 0.3 0.1 0.3 0.1
1.25 0.1 0.4 0.2
1.6 0.2
■ Fuses quickly and protects circuits when excessive voltage is applied
■ Anti-Leaching nickel barrier terminations
■ Fusing time: max. 60 sec.
■ Recognized by safety standard UL1412 File No.: E117262 (2A/0805…3A/2512)
■ Meets or exceeds IEC 60115-8, JIS C 5201-8, EIAJ RC-2124
■ Rated ambient temperature: + 70° C
■ Operating temperature range: - 55° C ... + 125° C
■ Suitable for reflow and wave soldering
+0.2
-0.1
2.0
3.2
0.3
2.6 0.2
0.5 0.3
2.5 0.2
+
–
0.2
0.1
0.6
0.4
5.0
6.3
3.1 0.2
ONE PULSE LIMITING ELECTRIC POWER
100
EXAMPLE OF FUSING CHARACTERISTICS
10
10
3A
2H
2E
3A
2B
1J, 2A
1J
2H
1
2A
2B
2E
001
0.1
1
10
100
0
1
2
3
4
5
6
7
8
Pulse duration (ms)
Fusing Power (W)
RATING
RESISTANCE
RANGE
POWER
RATING*
FUSING CHARACTERISTICS
(FUSING POWER)
SIZE
TYPE
T.C.R.
(E24)
1Ω … 100Ω
J( 5ꢀ)
2.6 W
1 Ω
2.6 W
2.4 W
1.1Ω … 20Ω
2.4 W
2.1 W
22Ω … 100Ω
2.1 W
22 Ω…100 Ω
0603
0805
1206
1210
2010
2512
RF73 1J
RF73 2A
RF73 2B
RF73 2E
RF73 2H
RF73 3A
0.063 W
0.1 W
see below**
–
–
3.0 W
2.0 W
+1000…
–500 ppm/K
(0.2Ω…4.3Ω)
0.2 Ω…0.47 Ω 0.51 Ω…1.0 Ω 1.1 Ω…20 Ω
110 Ω…510 Ω
3.75 W
0.2 Ω…0.47 Ω 0.51 Ω…10 Ω
4.5 W 4.1 W
2.875 W
2.5 W
11 Ω…24 Ω
2.0 W
27 Ω…100 Ω
1.75 W
0.125 W
0.25 W
0.5 W
0.2 Ω
…
110 Ω…510 Ω
3.5 W
3.2 W
30 Ω…100 Ω
3.0 W
510 Ω
0.2 Ω…0.47 Ω 0.51 Ω…4.7 Ω 5.1 Ω…27 Ω
5.5 W 5.0 W 4.0 W
0.2 Ω…0.47 Ω 0.51 Ω…4.7 Ω 5.1 Ω…27 Ω
6.5 W 6.0 W 5.0 W
0.2 Ω…0.47 Ω 0.51 Ω…4.7 Ω 5.1 Ω…30 Ω
110 Ω…510 Ω
500 ppm/K
(4.7Ω…510Ω)
3.5 W
30 Ω…100 Ω
3.2 W
J ( 5ꢀ)
110 Ω…510 Ω
4.5 W
33 Ω…100 Ω
4.0 W
1.0 W
110 Ω…510 Ω
*For resistors operated at an ambient temperature of +70°C or above, the power rating shall be derated.
**T.C.R. +1000 … -500ppm/K (1Ω … 3.3Ω), T.C.R. 500ppm/K (3.6Ω … 100Ω)
z
Rated voltage = Power rating x resistance value or max. working voltage, whichever is lower.
Type
1J
2A
2B
2E
2H
3A
Please contact KOA for special precautions before you order and use this series.
Maximum Open-Circuit Voltage
50V 50V
50V
50V 100V 100V
EUROPE GmbH • Kaddenbusch 6 • D-25578 Dägeling / ITZEHOE • PHONE: +49 (0) 48 21/89 89-0 • FAX: +49 (0) 48 21/89 89 89 • Internet: www.koaeurope.de
Revision: 07. Mar. 2011
92
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