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! Note ? Please read rating and ! CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
? This catalog has only typical speci?cations. Therefore, please approve our product speci?cations or transact the approval sheet for product speci?cations before ordering.
POSISTOR r for Circuit Protection
Overcurrent Protection Chip Type
R90E.pdf
Mar.4,2014
1
Overcurrent Protection device with resettable function
suitable for current limiting resistor.
This product is a chip type PTC thermistor for
overcurrent protection that is suitable for the
following.
e
g
L
e
W
· Countermeasure for short circuit testing
· Current limiting resistor
Part Number
Dimensions (mm)
L W T e g
PRG15_RC
1.0±0.05 0.5±0.05 0.5±0.05 0.15 to 0.35
-
c Features
1. Rapid operation to protect the circuit in an
overcurrent condition abnormality such as a
short circuit.
By removing the overcurrent condition, these
products automatically return to the initial
condition and can be used repeatedly.
2. Suitable for countermeasure to short circuit test
in safety standard.
3. Stable resistance after operation due to ceramic
PTC.
4. Similar size (0603 size) is possible due to the
large capacity for electric power.
5. Possible to use these products as current
limiting resistors with overcurrent protection
functions
6. The SMD type's small size and light weight are
helpful in miniaturizing the circuit.
Chip Type 0402(1005) Size
PRG18_RB
PRG21_RA
PRG21_RK
1.6±0.15 0.8±0.15 0.8±0.15 0.1 to 0.6 -
2.0±0.2 1.25±0.2 0.9±0.2 0.2 min. 0.5 min.
2.0±0.2 1.25±0.2 1.25±0.2 0.2 min. 0.5 min.
Max.
Hold Current
Hold Current
Trip Current
Trip Current
Max.
Resistance
Part Number
PRG15BC330MM1RC
PRG15BC220MM1RC
PRG15BC180MM1RC
PRG15BC4R7MM1RC
PRG15BC3R3MM1RC
PRG15BC2R2MM1RC
Voltage
(V)
30
16
16
9
9
6
(at +60°C)
(mA)
25
28
31
60
71
88
(at +25°C)
(mA)
38
43
47
91
110
134
(at +25°C)
(mA)
73
90
98
172
205
252
(at -10°C)
(mA)
92
113
125
216
260
318
Current
(mA)
1200
1000
1200
2500
3500
3500
(at +25°C)
(ohm)
33 ±20%
22 ±20%
18 ±20%
4.7 ±20%
3.3 ±20%
2.2 ±20%
Maximum Current shows typical capacities of the transformer which can be used.
This series is applied to re?ow soldering.
Chip Type 0603(1608) Size
Max.
Hold Current
Hold Current
Trip Current
Trip Current
Max.
Resistance
Part Number
PRG18BB471MB1RB
PRG18BB221MB1RB
PRG18BB101MB1RB
PRG18BB470MB1RB
PRG18BB330MB1RB
PRG18BC6R8MM1RB
PRG18BC4R7MM1RB
Voltage
(V)
24
24
24
24
24
20
20
(at +60°C)
(mA)
7
10
15
20
25
80
100
(at +25°C)
(mA)
10
14
21
29
36
120
155
(at +25°C)
(mA)
21
29
45
61
71
260
330
(at -10°C)
(mA)
25
35
55
75
85
320
400
Current
(mA)
60
130
300
630
900
3500
5000
(at +25°C)
(ohm)
470 ±20%
220 ±20%
100 ±20%
47 ±20%
33 ±20%
6.8 ±20%
4.7 ±20%
Continued on the following page.
13
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