V56MLA1206NA

更新时间： 2024-02-09 16:56:20

品牌	Logo	应用领域
力特 - LITTELFUSE		电阻器非线性电阻器
页数	文件大小	规格书
11页	195K
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V56MLA1206NA 数据手册

Surface Mount Varistors

Multilayer Transient Voltage Surge Suppressors

ML Varistor Series

Temperature De-rating

100

When transients occur in rapid succession, the average power dissipa-

tion is the energy (watt-seconds) per pulse times the number of pulses

per second. The power so developed must be within the specifications

shown on the Device Ratings and Specifications table for the specific

device. For applications exceeding 125^oC ambient temperature, the peak

surge current and energy ratings must be derated as shown in Figure 1.

TIME

100

FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM

FOR CLAMPING VOLTAGE

= VIRTUAL ORIGIN OFWAVE

t =TIME FROM 10% TO 90% OF PEAK

-55

50 60

90 100 110 120 130 140 150

= VIRTUAL FRONT TIME = 1.25 x t

= VIRTUALTIME TO HALFVALUE

(IMPULSE DURATION)

AMBIENTTEMPERATURE ( C)

FIGURE 1. PEAK CURRENT AND ENERGY

DERATING CURVE

EXAMPLE:

FOR AN 8/20µs CURRENT WAVEFORM

8µs = t = VIRTUAL FRONT TIME

20µs = t = VIRTUALTIME TO

HALFVALUE

100

MAXIMUM CLAMPING VOLTAGE

MAXIMUM LEAKAGE

V18MLA0402

V14MLA0402

V09MLA0402

V5.5MLA0402

1µA

10µA

100µA

1mA

10mA

100mA

10A

100A

CURRENT (A)

FIGURE 3. LIMIT V-I CHARACTERISTIC FOR V5.5MLA0402 TO V18MLA0402

143

www. littelfuse. com

1 2 345 6 7...11

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