Os motores de busca de Datasheet de Componentes eletrônicos |
|
1N823 Folha de dados(PDF) 3 Page - Motorola, Inc |
|
1N823 Folha de dados(HTML) 3 Page - Motorola, Inc |
3 / 4 page 1N821,A 1N823,A 1N825,A 1N827,A 1N829,A Motorola TVS/Zener Device Data 8-161 6.2 Volt OTC 400 mW DO-35 Data Sheet MAXIMUM ZENER IMPEDANCE versus ZENER CURRENT (See Note 2) MORE THAN 95% OF THE UNITS ARE IN THE RANGES INDICATED BY THE CURVES. Figure 4. 1N821 Series Figure 5. 1N821A Series 1000 1 2 4 6 8 10 20 40 60 80 100 200 400 600 800 1000 1 2 4 6 8 10 20 40 60 80 100 200 400 600 800 IZ, ZENER CURRENT (mA) 1 2 4 6 8 10 20 40 60 80 100 IZ, ZENER CURRENT (mA) 1 2 4 6 8 10 20 40 60 80 100 –55 °C 25 °C 100 °C 25 °C 100 °C –55 °C NOTE 1. VOLTAGE VARIATION ( ∆VZ) AND TEMPERATURE COEFFICIENT All reference diodes are characterized by the “box method.” This guarantees a maximum volt- age variation ( ∆VZ) over the specified temperature range, at the specified test current (IZT), verified by tests at indicated temperature points within the range. VZ is measured and re- corded at each temperature specified. The ∆VZ between the highest and lowest values must not exceed the maximum ∆VZ given. This method of indicating voltage stability is now used for JEDEC registration as well as for military qualification. The former method of indicating voltage stability — by means of temperature coefficient accurately reflects the voltage devi- ation at the temperature extremes, but is not necessarily accurate within the temperature range because reference diodes have a nonlinear temperature relationship. The temperature coefficient, therefore, is given only as a reference. NOTE 2. The dynamic zener impedance, ZZT, is derived from the 60 Hz ac voltage drop which results when an ac current with an rms value equal to 10% of the dc zener current, IZT, is superim- posed on IZT. Curves showing the variation of zener impedance with zener current for each series are given in Figures 4 and 5. NOTE 3. These graphs can be used to determine the maximum voltage change of any device in the series over any specific temperature range. For example, a temperature change from 0 to +50 °C will cause a voltage change no greater than +31 mV or – 31 mV for 1N821 or 1N821A, as illustrated by the dashed lines in Figure 1. The boundaries given are maximum values. For greater resolution, an expanded view of the center area in Figure 1a is shown in Figure 1b. NOTE 4. The maximum voltage change, ∆VZ, Figures 2 and 3 is due entirely to the impedance of the device. If both temperature and IZT are varied, then the total voltage change may be obtained by graphically adding ∆VZ in Figure 2 or 3 to the ∆VZ in Figure 1 for the device under consider- ation. If the device is to be operated at some stable current other than the specified test cur- rent, a new set of characteristics may be plotted by superimposing the data in Figure 2 or 3 on Figure 1. For a more detailed explanation see application note in later section. NOTE 5. Zener voltage limits at 25 °C measured with the test current (IZT) applied with the device junc- tion in thermal equilibrium at an ambient temperature of 25 °C. |
Nº de peça semelhante - 1N823 |
|
Descrição semelhante - 1N823 |
|
|
Ligação URL |
Privacy Policy |
ALLDATASHEETPT.COM |
ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |