參數(shù)資料
型號： P2200AA61RP
英文描述： 16-pin, 1.75KB, Flash, 72B RAM, 2x Comparator, 8HMz internal osc,Hi Volt Support, -40C to +85C, 14-PDIP, TUBE
中文描述： SIDAC的| 240伏五（公報）最大| 800mA的我（縣）|對220VAR
文件頁數(shù)： 125/161頁
文件大?。?/td> 986K
代理商： P2200AA61RP
SIDACtor
Data Book
Over-Voltage Protection Comparison
Teccor Electronics
(972) 580-7777
5 - 9
T
Applications
Although MOV
’
s are restricted from being used in many telecom applications (other
than disposable equipment), they are useful in AC applications where a clamping
device is required and tight voltage tolerances are not.
TVS Diodes
Overview
TVS diodes are clamping voltage suppressors that are constructed with back-to-back
PN junctions. During conduction, TVS diodes create a low impedance path by varying
their resistance as voltage is applied across their terminals. Once the voltage is
removed, the diode will turn off and return to its high off-state impedance.
Advantages
Because TVS diodes are solid state devices, they do not fatigue nor do their electrical
parameters change as long as they are operated within their specified limits. TVS
diodes effectively clamp fast rising transients and are well suited for low voltage
applications that do not require large amounts of energy to be shunted.
Restrictions
Because TVS diodes are clamping devices, they have two inherent weaknesses. The
first is that TVS diodes are both voltage and current limited, so careful consideration
should be given to using these in applications that require large amounts of energy to
be shunted. The second is that as the amount of current flowing through the device
increases, so does its maximum clamping voltage.
Applications
Due to their low power ratings, TVS diodes are not used as primary interface
protectors across Tip and Ring; they are used as secondary protectors that are
embedded within a circuit.
SIDACtors
Overview
A SIDACtor is a PNPN device that can be thought of as a TVS diode with a gate. Upon
exceeding its peak off-state voltage (V
DRM
), a SIDACtor will clamp a transient voltage
to within the devices switching voltage (V
S
) rating. Then, once the current flowing
through the SIDACtor exceeds its switching current, the device will crowbar and
simulate a short circuit condition. Once the current flowing through the SIDACtor is
less than the devices holding current (I
H
), the SIDACtor will reset and return to its high
off-state impedance.
Advantages
Advantages of the SIDACtor include its fast response time (Figure 5-3), stable
electrical characteristics, long term reliability, and low capacitance. Also, because the
SIDACtor is a crowbar device, it can not be damaged by voltage and it has extremely
high surge current ratings.
Restrictions
Because the SIDACtor is a crowbar device, it can not be used directly across the AC
line; it must be placed behind a load. Failing to do so will result in exceeding the
SIDACtors surge current rating which may cause the device to enter a permanent
short circuit condition.
相關(guān)PDF資料
PDF描述
P2202AA 16 PIN, 1.75KB FLASH, 64B RAM, 6 I/O, 8MHZ INTERNAL OSCILLATOR, -40C to +125C, 16-QFN, T/R
P2202AARP 14 PIN, 4KB FLASH, 128 RAM, 12 I/O, -40C to +85C, 16-QFN, T/R
P2202AB 14 PIN, 4KB FLASH, 128 RAM, 12 I/O, -40C to +85C, 14-TSSOP, T/R
P2202ABRP SIDAC|130V V(BO) MAX|800MA I(S)|TO-220VAR
P2202AC SIDAC|130V V(BO) MAX|800MA I(S)|TO-220VAR
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