Littelfuse MLE Varistor Series Manual de usuario descargar pdf (Pagina 2)

Revised: December 16, 2013

Varistor Products

MLE Varistor Series

Surface Mount Multilayer Varistors (MLVs) > MLE Series

Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com/series/MLE.html for current information.

Device Ratings and Speciﬁcations

Part Number

Max Continuous

Working Voltage

-55ºC to 125ºC

Performance Speciﬁcations (25ºC)

Nominal

Voltage

Maximum Clamping

Voltage at Speciﬁed

Current (8/20µs)

Maximum ESD Clamp

Voltage

(Note 2)

Typical

Capacitance

at 1MHz

(Note 1)

M(DC)



1mA DC

8kV Contact



15kV Air

(Note 4)

(V) MIN (V) MAX (V) (V) (V) Clamp (V) (pF)

V18MLE0402N 18 22 28   <110 

 18 22 28   <110 

 18 22 28  <100 <140 <100

 18 22 28    

 18 22 28    <100

V18MLE1206N 18 22 28    



peak surge current and energy ratings must be reduced as

shown below.

Peak Current and Energy Derating Curve

Nominal Voltage Stability to Multiple ESD Impulses

(8kV Contact Discharges per IEC 61000-4-2)

FIGURE

4. IMPEDANCE (Z) vs FREQUENCY

TYPICAL CHARACTERISTIC

0.1

FREQUENCY (MHz)

IMPEDANCE (Z)

100

1000

10000

100

0.01

-0402

-0603

-0805

-1206

Standby Current at Normalized Varistor Voltage and

Temperature

Impedance (Z) vs Frequency Typical Characteristic



1. For applications of 18V



2. Tested with IEC-61000-4-2 Human Body Model (HBM) discharge test circuit.



4. Corona discharge through air (represents actual ESD event).



6. Leakage current ratings are at 18 V

µA maximum.

FIGURE 2. NOMINAL VOLTAGE STABILITY TO MULTIPLE

ESD IMPULSES (8KV CONTACT DISCHARGES

PER IEC 61000-4-2)

CURRENT (A)

NOMINAL VOLTAGE AT 1mADC

100

1000

10000

1. 2

0.0

0.0001

0.001 0.01 0.1 1

CURRENT (mA)

NORMALIZED VARISTOR VOLTAGE (V)

FIGURE 3. STANDBY CURRENT AT NORMALIZED VARISTOR

VOLTAGE AND TEMPERATURE

1. 0

0.8

0.6

0.4

0.2

125

100

-55 50 60 70 80 90 100110 120130 140150

PERCENT OF RATED VALUE

AMBIENT TEMPERATURE (

FIGURE 1. PEAK CURRENT AND ENERGY DERATING CURVE

Figure 1

Figure 2

Figure 3

Figure 4

1 2 3 4 5 6

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