1N2828AR

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1N2828AR 数据手册

1N2804 thru 1N2846B and

1N4557 thru 1N4564B

50 Watt Zener Diodes

S C O T T S D A L E D I V I S I O N

NOTES:

The JEDEC type numbers shown (B suffix) have a +/- 5% tolerance on nominal zener voltage. The suffix A is used to identify +/-10%

tolerance; no suffix indicates +/-20% tolerance. If tighter tolerance is required, consult factory. Standard polarity units have the anode

connected to the case. Reverse polarity (cathode-to-case) units are available and are indicated by suffix R in the part number.

Zener Voltage (V_Z) is measured with junction in thermal equilibrium with 30^oC base temperature. The test currents (I_ZT) have been selected

so that at nominal voltages the dissipation is a constant 12.5 watts. This results in a nominal junction temperature rise of 18.75^oC .

The zener impedance is derived from the 60 cycle ac voltage, which results when an ac current having an rms value equal to 10% of the dc

zener current (I_ZTor I_ZK) is superimposed on I_ZTor I_ZK. Zener impedance is measured at 2 points to ensure a sharp knee on the breakdown

curve and to eliminate unstable units. A curve showing the variation of zener impedance vs. zener current for six representative types is

shown in Figure 3. Also see MicroNote 202 for further information.

The values of I_ZMare calculated for a +/-5% tolerance on nominal zener voltage. Allowance has been made for the rise in zener voltage

above V_ZTthat results from zener impedance and the increase in junction temperature as power dissipation approaches 50 watts. In the

case of individual diodes, I_ZMis that value of current that results in a dissipation of 50 watts.

GRAPHS AND CIRCUITS

Typical circuit connections for anode-to-case and

cathode-to-case polarities (standard and reverse

polarities, respectively).

Case

Temperature ^oC

FIGURE 2

POWER DERATING CURVE

FIGURE GROUP 3

TYPICAL ZENER IMPEDANCE vs. ZENER CURRENT FOR TYPES SHOWN

Microsemi

Scottsdale Division

Page 3

11-12-2003 REV A

8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503

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型号	品牌	描述	获取价格	数据表
1N2828B	NJSEMI	SILICON 50 WATT ZENER DIODE	获取价格
1N2828B	MICROSEMI	SILICON 50 WATT ZENER DIODES	获取价格
1N2828BCOX.120	MICROSEMI	Zener Diode, 45V V(Z), 5%, Silicon, Unidirectional,	获取价格
1N2828BCOX.160	MICROSEMI	Zener Diode, 45V V(Z), 5%, Silicon, Unidirectional,	获取价格
1N2828BCOX.200	MICROSEMI	Zener Diode, 45V V(Z), 5%, Silicon, Unidirectional,	获取价格
1N2828BCOX.250	MICROSEMI	Zener Diode, 45V V(Z), 5%, Silicon, Unidirectional,	获取价格