Vishay Intertechnology, Inc. introduced nine new series of low-profile, surface-mount standard, fast, and ultrafast avalanche rectifiers with 20 mJ EAS avalanche capability and industry-high forward currents up to 4 A in compact, space-saving SMP and SMPC packages.
The basic characteristics of series of avalanche diodes:
|
Series
|
Forward
current, A |
Performance
|
Package
|
Height
|
|
AS1Px
|
1
|
standard
|
SMP
|
1.0 mm
|
|
AR1Px
|
1
|
fast
|
||
|
AU1Px
|
1
|
ultrafast
|
||
|
AS3Px
|
3
|
standard
|
SMPC
|
1.1 mm
|
|
AS4Px
|
4
|
|||
|
AR3Px
|
3
|
fast
|
||
|
AR4Px
|
4
|
|||
|
AU2Px
|
2
|
ultrafast
|
||
|
AU3Px
|
3
|
The devices save space in secondary rectifiers and freewheeling diodes for very fast switching of AC/DC and DC/DC converters in high-temperature conditions for consumer, lighting, and automotive applications.
All nine series offer designers a choice of 200 V, 400 V, 600 V, 800 V, or 1,000 V reverse voltage ratings. The rectifiers feature low forward voltage drop, reverse recovery times as low as 75 ns, leakage current down to 0.3 µA, and very low junction-to-mount thermal resistance of 5 °C/W for the SMPC rectifiers and 15 °C/W for the SMP rectifiers. The devices offer a glass passivated chip junction and are ideal for automated placement.
 |
 |
| DO-220AA (SMP) | TO-277A (SMPC) |
The new rectifiers feature a rugged maximum operation junction temperature of +175 °C and an MSL moisture sensitivity level of 1, per J-STD-020. The devices are compliant to RoHS directive 2002/95/EC and WEEE 2002/96/EC, and are halogen-free according to IEC 61249-2-21.
