SMAJ54 データシートの表示（PDF） - First Components International

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SMAJ54

5.0V to 170V SMD TRANSIENT VOLTAGE SUPPRESSORS

First Components International 

Data Sheet

Fig. 1 Pulse Rating Curve

Fig. 2 Pulse Derating Curve

5.0V to 170V SMD TRANSIENT

VOLTAGE SUPPRESSORS

Fig. 4 Typical Junction Capacitance

Measured @

Zero Bias

Measured @

Standoff Voltage

Breakdown Voltage (Volts)

Fig. 5 Steady State Power Derating

TA = Ambient Temperature (°C)

TL = Terminal Temperature (°C)

Fig. 3 Pulse Waveform

tr = 10µs

Peak Value

IRSM

Fig. 6 Maximum Non-Repetitive

Surge Current

8.3ms Single Half Sine Wave

JEDEC Method

Pulse Width is defined

as that point where the

Peak Current decays to

50% of IRSM

T = Time ( ms)

Number of Cycles @ 60 Hz

Ratings at

25 Deg. C ambient

temperature

unless otherwise

specified.

Single Phase Half

Wave, 60 HZ

Resistive or

Inductive Load.

For Capacitive

Load, Derate

Current by 20%.

NOTES: 1. For Bi-Directional Applications, Use C or CA. Electrical Characteristics Apply in Both Directions.

2. Mounted on 8mm Copper Pads to Each Terminal.

3. 8.3 mS, ½ Sine Wave, Single Phase Duty Cycle, @ 4 Pulses Per Minute Maximum.

4. VBR Measured After It Applies for 300 uS. IT = Square Wave Pulse or Equivalent.

5. Non-Repetitive Current Pulse. Per Fig. 3 and Derated Above TA = 25°C per Fig. 2.

Page 37

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