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PDF ZEN056 Data sheet ( Hoja de datos )
| Número de pieza | ZEN056 | |
| Descripción | Polymer Protected Zener Diode | |
| Fabricantes | Tyco Electronics | |
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PolyZen Devices
Polymer Protected Zener Diode
PolyZen devices are polymer enhanced precision Zener
diode micro-assemblies that help protect sensitive
electronics from damage caused by inductive voltage
spikes, voltage transients, use of incorrect power supplies
and reverse bias.
The PolyZen micro-assembly incorporates a stable
Zener diode for precise voltage clamping and a
resistively non-linear, polymeric positive temperature
coefficient (PPTC) layer that responds to either diode
heating or overcurrent events by transitioning from a
low to high resistance state.
PolyZen devices help provide resettable protection
against damage caused by multi-watt fault events and
require only 0.7W power dissipation. In the event of
sustained high power conditions, the PPTC element of
the device “trips” to limit current and generate voltage
drop. This functionality helps protect both the Zener
and the follow-on electronics, effectively increasing the
diode’s power handling capacity.
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4
Benefits
• Helps shield downstream electronics from overvoltage
and reverse bias
• Trip events shut out overvoltage and reverse bias
sources
• Analog nature of trip events minimize upstream
inductive spikes
• Helps reduce design costs with single component
placement and minimal heat sinking requirements
Features
• RoHS compliant
• Overvoltage transient suppression
• Hold currents up to 2.3A
• Time delayed, overvoltage trip
• Time delayed, reverse bias trip
• Power handling on the order of 30 watts
• Integrated device construction
Applications
• Portable media players
• Global positioning systems
• Hard disk drives 5V & 12V bus
• Solid State Drives (SSD) 5V bus
• Cellphone charger port and USB power
• Automotive peripheral input power
• DC power port protection
• Industrial handheld POS
27
1 page  
Figure PZ16-PZ22 Basic Operation Examples for PolyZen Devices
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Figure PZ15
Typical Fault Response: ZEN132V130A24LS
24V, 2.0A Current Limited Source (IOUT=0)
30
A = VIN (V)
25 B = VOUT (V)
A
C = IFLT (A)
20
B
15
10
5
C
0
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
Time (s)
Figure PZ17
Typical Fault Response: ZEN056V230A16LS
16V, 5.0A Current Limited Source (IOUT=0)
20
A = VIN (V)
B = VOUT (V)
A
15 C = IFLT (A)
Figure PZ16
Typical Fault Response: ZEN164V130A24LS
24V, 1.0A Current Limited Source (IOUT=0)
30
A = VIN (V)
25 B = VOUT (V)
A
C = IFLT (A)
20 B
15
10
5
0
0.00
0.10 0.20
C
0.30 0.40
Time (s)
0.50
Figure PZ18
Typical Fault Response: ZEN065V230A16LS
16V, 3.5A Current Limited Source (IOUT=0)
20
A = VIN (V)
B = VOUT (V)
15 C = IFLT (A)
A
10
B
5
0
0.00
C
0.10 0.20
Time (s)
0.30
Figure PZ19
Typical Fault Response: ZEN132V230A16LS
20V, 2.0A Current Limited Source (IOUT=0)
22
20 A = VIN (V)
18 B = VOUT (V)
C = IFLT (A)
16
A
B
14
12
10
8
6
4
2
C
0
0
0.05 0.10
0.15 0.20 0.25
Time (s)
0.30
Figure PZ21
Typical Fault Response: ZEN132V075A48LM
48V, 2.0A Current Limited Source (IOUT=0)
50
45 A = VIN (V)
B = VOUT (V)
40
C = IFLT (A)
35
A
30
25
20
B
15
10
5
C
0
0 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18
Time (s)
0.20
10
B
5
0
0.00
C
0.10 0.20
Time (s)
0.30
Figure PZ20
Typical Fault Response: ZEN056V075A48LS
48V, 10.0A Current Limited Source (IOUT=0)
50
A = VIN (V)
A
B = VOUT (V)
40 C = IFLT (A)
30
20
10
0
0.00
B
C
0.01 0.02
0.03
Time (s)
0.04
Figure PZ22
Typical Fault Response: ZEN056V130A24GS
24V, 1.0A Current Limited Source (IOUT=0)
24
22 A = VIN (V)
A
20 B = VOUT (V)
18 C = IFLT (A)
16
14
12
10
8
6B
4
2
C
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Time (s)
1.0
RoHS Compliant
4
31
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet ZEN056.PDF ] | |
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