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參數(shù)資料
| 型號(hào)： | 1SMA4729 |
| 廠商： | PanJit International Inc. |
| 元件分類： | 參考電壓二極管 |
| 英文描述： | Low Current Operation at 250??A???Low Reverse Leakage,Low Noise Zener Diode(250??A?·￥?????μ?μ?????°????????????μ?μ?????????a?￡°???é???o3?o???????) |
| 中文描述： | 在250μA低電流操作，低反向漏，低噪聲穩(wěn)壓二極管（250μA工作電流，小反向漏電流，低噪聲，齊納二極管） |
| 文件頁(yè)數(shù)： | 3/5頁(yè) |
| 文件大?。?/td> | 363K |
| 代理商： | 1SMA4729 |
PAGE . 3
STAD-JAN.27.2005
NOTE:
1. Tolerance and Type Number Designation. The type umbers listed have a standard tolerance on the nominal zener
voltage of
5%
2. Specials Available Include:
A. Nominal zener voltages between the voltages shown and tighter voltage tolerances.
B. Matched sets.
3. Zener Voltage (Vz) Measurement. Guarantees the zener voltage when measured at 90 seconds while maintaining
the lead temperature (T ) at 30 C
1 C, from the diode body.
4. Zener Impedance (Zz) Derivation. 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.
5. Surge Current (Ir) Non-Repetitive. The rating listed in the electrical characteristics table is maximum peak,
non-repetitive, reverse surge current of 1/2
+
+
L
1.0
0.75
0.5
0.25
0
0
20
40
60
80
1
1
1
1
1
2
0
2
4
6
8
0
0
0
0
0
0
0
T , LEAD TEMPERATURE ( C)
P
D
RATING AND CHARACTERISTICS CURVES
L=LEAD LENGTH
TO HEAT SINK
FIGURE.1 POWER TEMPERATURE DERATING CURVE
FIGURE.2 TEMPERATURE COEFICIENTS
(-55 C TO +150 C TEMPERATURE RANGE; 90% OF THE UNITS ARE IN THE RANGES INDICATED.)
a.RANGE FOR UNITS TO 12 VOLTS
b.RANGE FOR UNITS 12 TO 100 VOLTS
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| 1SMA4731 | Low Current Operation at 250??A???Low Reverse Leakage,Low Noise Zener Diode(250??A?·￥?????μ?μ?????°????????????μ?μ?????????a?￡°???é???o3?o???????) |
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| 1SMA4729A | 制造商:EIC 制造商全稱:EIC discrete Semiconductors 功能描述:SURFACE MOUNT ZENER DIODES |
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| 1SMA4731 | 制造商:PANJIT 制造商全稱:Pan Jit International Inc. 功能描述:SURFACE MOUNT SILICON ZENER DIODE |
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