Overview
The 1SMB5919BT3 is a high-performance Zener diode manufactured by ON Semiconductor. This device is designed to provide reliable voltage regulation and protection in various electronic circuits. Although it is currently listed as obsolete, it remains a significant component for many existing designs. The 1SMB5919BT3 is housed in a compact DO-214AA (SMB) package, making it suitable for space-constrained applications.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ON Semiconductor |
| Part Number | 1SMB5919BT3 |
| Zener Voltage (V_Z) | 5.6 V ±5% |
| Maximum Power Dissipation (P_MAX) | 3 W |
| Package/Case | DO-214AA (SMB) |
| Lead/Terminal Type | Surface Mount |
| Number of Leads/Terminals | 2 |
| Operating Temperature Range | -55°C to +150°C |
| Zener Impedance (ZZT @ IZT) | 2.0 ohm @ 66.9 mA |
| Zener Knee Impedance (ZZK @ IZK) | 250 ohm @ 1 mA |
| Leakage Current (IR @ VR) | 5 uA @ 3.0 V |
| Maximum DC Zener Current | 267 mA (dc) |
Key Features
- Stable Zener Voltage: Maintains a fixed voltage across the diode under varying load conditions.
- Low Reverse Current: Features low reverse current for efficient operation.
- Wide Operating Temperature Range: Supports a wide temperature range from -55°C to +150°C.
- Compact Package: Housed in a compact DO-214AA package for easy integration.
- Fast Response Time: Offers rapid response to voltage variations, ensuring efficient circuit operation.
Applications
The 1SMB5919BT3 is ideal for various applications requiring reliable voltage regulation and protection:
- Voltage Regulation: Used in voltage regulation applications to maintain stable voltage levels.
- Transient Voltage Suppression: Suitable for protecting circuits from transient voltage spikes.
- Consumer Electronics: Commonly used in various consumer electronic devices for power supply stabilization.
- Power Supplies: Used in power supply designs to ensure stable operation even in fluctuating voltage conditions.
Q & A
- Q: What is the Zener voltage of the 1SMB5919BT3?
A: The 1SMB5919BT3 has a Zener voltage of 5.6 V ±5%.
- Q: What is the maximum power dissipation of the 1SMB5919BT3?
A: The maximum power dissipation of the 1SMB5919BT3 is 3 W.
- Q: What is the package type of the 1SMB5919BT3?
A: The 1SMB5919BT3 is housed in a DO-214AA (SMB) package.
- Q: What is the operating temperature range of the 1SMB5919BT3?
A: The operating temperature range of the 1SMB5919BT3 is -55°C to +150°C).
- Q: Can the 1SMB5919BT3 be used for high-power applications?
A: While the 1SMB5919BT3 is suitable for various applications, it's important to check the power ratings and limits specified in the datasheet to ensure it meets the requirements of your specific high-power application).
- Q: What are the typical applications of the 1SMB5919BT3?
A: The 1SMB5919BT3 is typically used in voltage regulation, transient voltage suppression, and consumer electronics for power supply stabilization).
- Q: How do I connect the 1SMB5919BT3 in a circuit?
A: Connect the 1SMB5919BT3 Zener diode in reverse bias across the load to regulate the voltage. Ensure proper orientation with the anode and cathode connected correctly).
- Q: What are the equivalents of the 1SMB5919BT3?
A: Comparable Zener diodes include the 1N5919B and BZX55C20, which offer similar voltage and performance characteristics).
- Q: Is the 1SMB5919BT3 still available for purchase?
A: The 1SMB5919BT3 is currently listed as obsolete, but it may still be available from some suppliers or through secondary markets).
- Q: What are the dimensions of the 1SMB5919BT3 package?
A: The dimensions of the 1SMB5919BT3 package are approximately 5.21 mm (length including leads), 3.3 mm (width), and 1.9 mm (height)).
