BYD43
BYD43 - Cavity Free Cylindrical Glass Package Diode
Overview
The BYD43 is a high-performance diode featuring a cavity-free cylindrical glass package design. This component is specifically engineered to provide reliable performance in demanding applications where stability and durability are critical. The glass passivation ensures excellent protection against environmental factors while maintaining superior electrical characteristics.
This diode is particularly suitable for applications requiring high maximum operating capabilities and stable performance across varying temperature ranges. Its unique construction eliminates internal cavities that could potentially trap contaminants or moisture, significantly improving long-term reliability.
Key Features
- Glass passivated junction for enhanced reliability
- Cavity-free cylindrical glass package design
- High maximum operating temperature capability
- Excellent thermal stability
- Low leakage current
- Fast switching characteristics
- High surge current capability
- RoHS compliant construction
- Lead-free termination options available
Applications
The BYD43 diode is designed for use in a wide range of electronic applications, including:
Power Supply Circuits
- AC/DC converters
- DC/DC converters
- Switching power supplies
- Voltage regulation circuits
Protection Circuits
- Reverse polarity protection
- Overvoltage protection
- Transient voltage suppression
Industrial Electronics
- Motor control circuits
- Relay drivers
- Industrial automation systems
Consumer Electronics
- Television power circuits
- Audio equipment
- Home appliance controls
Automotive Systems
- Alternator circuits
- Lighting systems
- Electronic control units
Electrical Characteristics
The following tables detail the key electrical specifications of the BYD43 diode:
Absolute Maximum Ratings
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Peak Repetitive Reverse Voltage | VRRM | 1000 | V |
| Average Forward Current | IF(AV) | 1.0 | A |
| Non-Repetitive Peak Forward Surge Current | IFSM | 30 | A |
| Operating Junction Temperature | TJ | -55 to +150 | °C |
| Storage Temperature Range | TSTG | -55 to +150 | °C |
Thermal Characteristics
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Thermal Resistance, Junction to Ambient | RθJA | 100 | °C/W |
| Thermal Resistance, Junction to Lead | RθJL | 25 | °C/W |
Electrical Characteristics (TA = 25°C unless otherwise specified)
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Forward Voltage | VF | IF = 1.0A | - | 1.1 | 1.3 | V |
| Reverse Current | IR | VR = VRRM, TA = 25°C | - | - | 5 | µA |
| Reverse Current | IR | VR = VRRM, TA = 100°C | - | - | 500 | µA |
| Junction Capacitance | CJ | VR = 4V, f = 1MHz | - | 15 | 25 | pF |
Package Information
The BYD43 is available in a cylindrical glass package with the following dimensions and characteristics:
Mechanical Dimensions
- Package diameter: 4.3 mm ± 0.1 mm
- Package length: 9.0 mm ± 0.5 mm
- Lead diameter: 0.6 mm ± 0.05 mm
- Lead length: 25 mm ± 1 mm (standard)
Package Marking
The device is marked with the following information:
- Part number: BYD43
- Cathode end marked with a colored band
- Lot code for traceability
Mounting Information
- Recommended PCB hole diameter: 0.7 mm
- Minimum bending radius for leads: 1.5 mm
- Maximum soldering temperature: 260°C for 10 seconds
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