1N5908 datasheet(4/6 Pages) ONSEMI | 1500 Watt Mosorb TM Zener Transient Voltage Suppressors

部件名	1N5908

功能描述	1500 Watt Mosorb TM Zener Transient Voltage Suppressors

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制造商	ONSEMI [ON Semiconductor]

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1N5908

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APPLICATION NOTES

RESPONSE TIME

In most applications, the transient suppressor device is

placed in parallel with the equipment or component to be

protected. In this situation, there is a time delay associated with

the capacitance of the device and an overshoot condition

associated with the inductance of the device and the inductance

of the connection method. The capacitance effect is of minor

importance in the parallel protection scheme because it only

produces a time delay in the transition from the operating

voltage to the clamp voltage as shown in Figure 6.

The inductive effects in the device are due to actual turn-on

time (time required for the device to go from zero current to full

current) and lead inductance. This inductive effect produces an

overshoot in the voltage across the equipment or component

being protected as shown in Figure 7. Minimizing this

overshoot is very important in the application, since the main

purpose for adding a transient suppressor is to clamp voltage

spikes. These devices have excellent response time, typically

in the picosecond range and negligible inductance. However,

external inductive effects could produce unacceptable

overshoot. Proper circuit layout, minimum lead lengths and

placing the suppressor device as close as possible to the

equipment or components to be protected will minimize this

overshoot.

Some input impedance represented by Zin is essential to

prevent overstress of the protection device. This impedance

should be as high as possible, without restricting the circuit

operation.

DUTY CYCLE DERATING

The data of Figure 1 applies for non-repetitive conditions

and at a lead temperature of 25

°C. If the duty cycle increases,

the peak power must be reduced as indicated by the curves of

Figure 5. Average power must be derated as the lead or ambient

temperature rises above 25

°C. The average power derating

curve normally given on data sheets may be normalized and

used for this purpose.

At first glance the derating curves of Figure 5 appear to be

in error as the 10 ms pulse has a higher derating factor than the

10

ms pulse. However, when the derating factor for a given

pulse of Figure 5 is multiplied by the peak power value of

Figure 1 for the same pulse, the results follow the expected

trend.

TYPICAL PROTECTION CIRCUIT

Vin

VL

V

Vin

Vin (TRANSIENT)

VL

td

V

VL

Vin (TRANSIENT)

Zin

LOAD

OVERSHOOT DUE TO

INDUCTIVE EFFECTS

tD = TIME DELAY DUE TO CAPACITIVE EFFECT

t

Figure 6.

Figure 7.

CLIPPER BIDIRECTIONAL DEVICES

1. Clipper-bidirectional devices are available in the

1.5KEXXA series and are designated with a “CA” suffix;

for example, 1.5KE18CA. Contact your nearest ON

Semiconductor representative.

2. Clipper-bidirectional part numbers are tested in both

directions to electrical parameters in preceeding table

(except for VF which does not apply).

3. The 1N6267A through 1N6303A series are JEDEC

registered devices and the registration does not include a

“CA” suffix. To order clipper-bidirectional devices one

must add CA to the 1.5KE device title.

类似零件编号 - 1N5908

制造商	部件名	数据表	功能描述
STMicroelectronics	1N5908	71Kb / 6P	TRANSILTM August 1999 Ed : 2A
Microsemi Corporation	1N5908	78Kb / 2P	TRANSIENT ABSORPTION ZENER
	1N5908	252Kb / 2P	TRANSIENT ABSORPTION ZENER
	1N5908	224Kb / 3P	1500 WATT LOW VOLTAGE TRANSIENT VOLTAGE SUPPRESSOR
	1N5908	123Kb / 2P	TRANSIENT ABSORPTION ZENER UNIDIRECTLOANL AND BIDIRECTIONAL

More results

类似说明 - 1N5908

制造商	部件名	数据表	功能描述
ON Semiconductor	1N6267A	77Kb / 7P	1500 Watt Mosorb TM Zener Transient Voltage Suppressors February, 2007 ??Rev. 8
	15KE68CA	58Kb / 8P	1500 Watt Mosorb Zener Transient Voltage Suppressors February, 2002 ??Rev. 2
	1N6267A	78Kb / 8P	1500 Watt Mosorb Zener Transient Voltage Suppressors July, 2005 ??Rev. 7
	1N6373	79Kb / 8P	1500 Watt Peak Power Mosorb TM Zener Transient Voltage Suppressors December, 2005 ??Rev. 4
	1.5KE18CARL4	211Kb / 7P	1500 Watt Mosorb??Zener Transient Voltage Suppressors August, 2006 ??Rev. 3
	1N6373	60Kb / 8P	1500 Watt Peak Power Mosorb Zener Transient Voltage Suppressors June, 2002 ??Rev. 2
Motorola, Inc	SA170A	50Kb / 3P	MOSORB ZENER OVERVOLTAGE TRANSIENT SUPPRESSORS
Fairchild Semiconductor	SMCJ10A	127Kb / 5P	1500 Watt Transient Voltage Suppressors
ON Semiconductor	1SMC5.0AT3G	174Kb / 7P	1500 Watt Peak Power Zener Transient Voltage Suppressors February, 2012 ??Rev. 8
ON Semiconductor	15SMC68AT3	82Kb / 8P	1500 Watt Peak Power Zener Transient Voltage Suppressors April, 2004 ??Rev. 5