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參數資料
| 型號： | 307C1333 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | PTCR Overcurrent Protection |
| 中文描述： | PTCR熱敏過流保護 |
| 文件頁數： | 3/5頁 |
| 文件大?。?/td> | 120K |
| 代理商： | 307C1333 |
www.vishay.com
13
307C Overcurrent Thermistors
PTCR Overcurrent Protection
Vishay Cera-Mite
Document Number: 23089
Revision 14-May-02
ceramite.support@vishay.com
VISHAY
HOLD (I
) TRIP (I
) RESISTANCE SWITCH SIZE (D) CERA-MITE
CURRENT CURRENT R
25
TEMP. NOMINAL PART
mA mA Ohms °C mm NUM
BER
110 220 30 105 6.5 307C1127
100 200 15 70 8 307C1128
100 200 20 80 8 307C1126
110 220 18 80 8 307C1268
120 240 15 80 8 307C1129
140 280 15 105 8 307C1435
110 220 15 70 9.5 307C1134
130 260 15 80 9.5 307C1130
140 280 9 70 9.5 307C1436
150 300 10 80 9.5 307C1437
Note 1 Note 2 Note 3
Fig P-5
Fig P-6
PTC THERMISTORS FOR
TELECOMMUNICATIONS
PTC Thermistors provide protection
for large digital switches. Vishay Cera-
Mite has pioneered this field with
ceramic PTC thermistors working
closely with major telephone equip-
ment and telephone protection
manufacturers. The requirements are
dynamic, as switch makers continually
strive to protect at lower levels. Vishay
Cera-Mite participates with industry
standard technical committees to
establish common definitions and
understanding of this new tech-
nology.
Fig P-8
Time-Trip Curves for Popular Telecom Pellets
Over-voltage
Pressure
Contact
Line
Tip
C.O.
Tip
Ground
C.O. Ring
Over-Current
Contact
PTCR
M
C.O. Ring
To Battery
OV
PTCR
C.O. Tip
Leaded PTCR
PTCR
C.O. Tip
C.O. Ring
Line Ring
Line Tip
OV
PTCR
PTC THERMISTOR PELLETS FOR TELECOMMUNICATIONS
Table 2
Fig P-7
Rated Voltage = 60 V
DC
Rated Current = 3A
Maximum Voltage = 220 Vrms
Note 1
Hold and trip currents
are specified at
25
°
C ambient.
Note 2
R
is nominal zero power
resistance at 25
°
C with
tolerance of ± 20%.
Note 3
All pellets have silver elec-
trodes suitable for pressure
contact mounting.
INTERRUPTING CAPACITY ESTIMATES
Under unusual circumstances, telecommunication lines may
be subjected to high surge currents as might occur from
lightning effects or accidental crossing with power lines or
transformer primaries.
Fig P-10
shows trip time curves for higher currents. Estimated
interrupting capability data is also shown in Table 3 and
is expressed as
“
I
2
t Let Through
”
based on test data
conducted in accordance with UL 497A and CSA 22.2 No.
0.7-M1985.
The data shown is for reference. Specific short circuit data or
interrupting capability is partially determined by the mounting
means and circuit application.
Fig P-9
Fig P-10
Time VS. Current Curves for High Current Surges (25
°
C)
D
Base
Electrode
T
Silver
Electrode
Solid Ceramic
Disc
2.5mm
Current (Amperes)
Operating Time to 50% Current
0
.05
1
1.5
2
2.5
3
T
307C1130
307C1129
307C1128
307C1126
307C1127
PTCR
Scope
Time To
R
L
1/2
R
S
5
Current (Amperes)
2
4
6
8
10
12
14
16
18
20
10,000
1,000
100
10
T
10 ohm, 80
°
C Pellets for
Diameters (mm
14.5mm
12.5mm
11.0mm
9.5mm
8.0mm
6.5mm
Variable
Voltage
Source
0-600V
60Hz
Current
Probe or
26 AWG
Pair
A = 1.5 sec.
B = 5 sec.
C = 30 min.
A
B
C
PTCR
Current
Limiter
15
85
275
Timed Interrupter
2
t Let Through
100
10
1
0.1
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 307C1335 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:PTCR Overcurrent Protection |
| 307C1336 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:PTCR Overcurrent Protection |
| 307C1337 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:PTCR Overcurrent Protection |
| 307C1338 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:PTCR Overcurrent Protection |
| 307C1339 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:PTCR Overcurrent Protection |
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