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参数资料
| 型号： | 1N4549R |
| 厂商： | MICROSEMI CORP-SCOTTSDALE |
| 元件分类： | 齐纳二极管 |
| 英文描述： | 3.9 V, 50 W, SILICON, UNIDIRECTIONAL VOLTAGE REGULATOR DIODE, DO-203AB |
| 封装： | HERMETIC SEALED, METAL, DO-5, 1 PIN |
| 文件页数： | 3/3页 |
| 文件大小： | 374K |
| 代理商： | 1N4549R |
50 WATT ZENER DIODES
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 3
Copyright
2003
11-12-2003 REV A
W
.Mi
cr
os
em
i
.C
O
M
SCOTTSD A L E DIVISION
1N3305 thru 1N3350B
and 1N4549B thru 1N4556B
1N
33
05
–
1N
33
50
B
1N
45
49
B
–
1N
45
56
B
35
0B
1N
45
49
B
–
1N
45
56
B
See further notes on following page
NOTES:
1.
When using JEDEC numbers an R suffix should be used to signify reversed polarity. The suffixes A and B indicate tolerances
NOTES:
1.
When using JEDEC numbers an R suffix should be used to signify reversed polarity. The suffixes A and B indicate tolerances
of 10% and 5% respectively. No suffix or just R denotes +/-20% tolerance. Example: 1N3319RB is a REVERSED polarity,
20 volt unit having a +/-5% tolerance on Zener Voltage.
2.
Zener Voltage (
VZ) is measured with junction in thermal equilibrium with 30
oC stud temperature.
2.
Zener Voltage (
VZ) is measured with junction in thermal equilibrium with 30
oC stud temperature.
3.
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 (IZT or IZK) is superimposed on IZT or IZK. 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 three representative types is shown in Figure 2. Also see Microsemi MicroNote 202.
3.
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 (IZT or IZK) is superimposed on IZT or IZK. 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 three representative types is shown in Figure 2. Also see Microsemi MicroNote 202.
OUTLINE AND CIRCUIT
Rated
Po
w
e
rDissipation
-
W
atts
Stud Temperature
oC
FIGURE 1
Power Derating Curve
FIGURE 2
Typical Zener Impedance
vs. Zener Current
PACKAGE DIMENSIONS
All Dimensions in: INCH
mm
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 1N4549RA | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Silicon 50 Watt Zener Diodes |
| 1N4549RB | 制造商:Microsemi Corporation 功能描述:DIODE ZENER 3.9V 500MW DO-5 |
| 1N455 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:GOLD BONDED DIODES(Low forward voltage, low power consumption) |
| 1N4550 | 制造商:Solid State Devices Inc (SSDI) 功能描述:DO5 50 Watt Zener Diodes |
| 1N4550A | 制造商:Microsemi Corporation 功能描述:ZENER SGL 4.3V 10% 50W 2PIN DO-5 - Bulk |
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