Low Voltage Ultra-Sharp Knee
This multi-layer pn junction Zener design for ultra-sharp knee characteristics is used for low-voltage regulation and very low leakage currents. The new design offers significantly improved voltage regulation and lower dynamic impedance and capacitance compared to conventional Zeners. They also provide ESD protection for those threats defined per IEC 61000-4-2 or electrical fast transients per IEC 61000-4-4 as well as other transient threats. Because of their relatively small physical size and weight this product is ideal for use in high reliability, portable, and hand-held electronic devices.
Microsemi offers broad product portfolio of Zener diodes voltage ranges from 1V to 200V and in Axial and surface mount packages. QPL and custom solutions in different screening levels are available.
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Low Voltage Ultra-Sharp Knee Zener product table
|Nominal Voltage||Test Current
|Maximum Zener Impedance||Maximum Reverse Current||
Maximum Total Capacitance
|Maximimum Magnitude Temperature Coefficient||Maximum Regulation Factor
|VZ @ IZT||IZT||@ IZT||IR||VR||CT||αvz||∆VZ|
| PART NUMBER
||Volts||mA||Ohms||µA||Volts||pF||% / OC||Volts|
- ZENER (VZ) VOLTAGE MEASUREMENT: Nominal Zener voltage is measured with the device junction in thermal equilibrium with ambient temperature of 25 °C at the test current (IZT) shown.
- ZENER IMPEDANCE (ZZT): The Zener impedance is derived from the 60 Hz voltage, which results when an ac current having a rms value equal to 10% of the dc Zener current (IZT) is superimposed on IZT.
- REVERSE CURRENT (IR): Reverse (leakage) current is guaranteed and measured at VR as shown on the table.
- MAXIMUM REGULATION FACTOR (ΔVZ): ΔVZ is the maximum difference between VZ at IZ = 0.025 mA and VZ at IZ = 2.5 mA
- MAXIMUM ZENER CURRENT (IZM) should be based on 500mW maximum power dissipation rating in conjunction with derating based on mounted thermal resistance divided by VZ based on nominal VZ modified for VZ IZ trend shown in Figure 4a-c.