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Product Detailed Parameters
- Description：DIODE AVALANCHE 1KV 600MA MELF
- Series：-
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR)
- Technology：Avalanche
- Voltage - DC Reverse (Vr) (Max)：1000 V
- Current - Average Rectified (Io)：600mA
- Voltage - Forward (Vf) (Max) @ If：1.3 V @ 1 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：300 ns
- Current - Reverse Leakage @ Vr：1 µA @ 1000 V
- Capacitance @ Vr, F：20pF @ 0V, 1MHz
- Mounting Type：Surface Mount
- Package / Case：SOD-87
- Supplier Device Package：MELF
- Operating Temperature - Junction：-65°C ~ 175°C
- Grade：-
- Qualification：-
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Overview
The BYD37M,115 is a fast soft-recovery controlled avalanche rectifier from the BYD37 series. It features a repetitive peak reverse voltage of 1000 V and a continuous reverse voltage of 1000 V. The device supports an average forward current of 1.5 A at a tie-point temperature of 105 °C, or 0.6 A at an ambient temperature of 60 °C with PCB mounting. Non-repetitive peak forward current reaches 20 A for a 10 ms half-sine wave. Electrical characteristics include a maximum reverse current of 1 μA at 25 °C and a typical diode capacitance of 20 pF at 1 MHz. Thermal resistance from junction to tie-point is 30 K/W.
Feature Summary
- Hermetically sealed cavity-free cylindrical glass package utilizing Implotec technology for matched coefficients of expansion.
- Guaranteed avalanche energy absorption capability designed for inductive load switching applications.
- Fast soft-recovery characteristics optimized for high-frequency switched mode power supply environments.
Applications
- Switched mode power supplies
- High voltage rectification circuits
- Inductive load protection
Procurement Notes
Verify component authenticity through authorized NXP distributors. Confirm datasheet revision status as specifications may supersede earlier versions. Ensure storage conditions remain within specified limits to maintain hermetic seal integrity. Check for RoHS compliance documentation if required by specific manufacturing standards.
Selection Notes
Select this component for applications requiring high voltage blocking capabilities up to 1000 V. Consider thermal management requirements based on the 30 K/W junction-to-tie-point resistance. Evaluate circuit duty cycles against the provided repetitive peak forward current curves to ensure safe operating area compliance during transient events.
Part Context
Part of the BYD37 series of fast soft-recovery controlled avalanche rectifiers manufactured by Philips Semiconductors (now NXP). The series includes variants with different voltage ratings ranging from 200 V to 1000 V. These devices are designed for surface mount assembly using the SOD87 outline.
Replacement Considerations
Direct substitutes within the same voltage class include BYD37K. Verify package compatibility and thermal characteristics when considering alternative manufacturers' equivalents for the SOD87 surface mount form factor.
FAQ
What is the guaranteed avalanche energy absorption for the BYD37M?
The BYD37M has a guaranteed non-repetitive peak reverse avalanche energy of 7 mJ when tested with an inductance of 120 mH at maximum junction temperature.
How does the package design contribute to reliability?
The cavity-free cylindrical glass package uses Implotec technology, ensuring all parts have matched coefficients of expansion. This creates a hermetically sealed and fatigue-free structure.
