仕様
| 属性 | 値 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Part Status | Active |
| Voltage - Zener(Nom)(Vz) | 6.8 V |
| Tolerance | ±5% |
| Power - Max | 3 W |
| Impedance(Max)(Zzt) | 2.5 Ohms |
| Current - Reverse Leakage @ Vr | 5 µA @ 5.2 V |
| Voltage - Forward (Vf) (Max) @ If | 1.5 V @ 200 mA |
| Operating Temperature | -65°C ~ 150°C |
| Mounting Type | Surface Mount |
概要
Description
The 1SMB5921BT3G is a surface-mount transient voltage suppressor (TVS) diode designed to protect sensitive electronics from voltage spikes and transients. Key features include:
- Voltage Rating: 12V (standoff) to 19.9V (breakdown).
- Peak Pulse Power: 600W (1ms pulse).
- Low Clamping Voltage: Helps limit damage to downstream components.
- Package: SMB (DO-214AA) for compact PCB mounting.
Commonly used in power supplies, automotive systems, and communication devices, it provides robust ESD and surge protection. Its fast response time (<1ns) ensures effective suppression of transient events.
For detailed specs, refer to the manufacturer’s datasheet.
- Voltage Rating: 12V (standoff) to 19.9V (breakdown).
- Peak Pulse Power: 600W (1ms pulse).
- Low Clamping Voltage: Helps limit damage to downstream components.
- Package: SMB (DO-214AA) for compact PCB mounting.
Commonly used in power supplies, automotive systems, and communication devices, it provides robust ESD and surge protection. Its fast response time (<1ns) ensures effective suppression of transient events.
For detailed specs, refer to the manufacturer’s datasheet.
Equivalent
Equivalent products to the 1SMB5921BT3G (22V Zener diode, 1.5W) include:
- BZX84C22 (22V, 350mW, SOT-23)
- MMSZ5226B (22V, 500mW, SOD-123)
- P6SMB22A (22V, 1.5W, SMB)
- SMBJ22A (22V, 1.5W, SMB)
Check voltage, power rating, and package compatibility before substitution.
- BZX84C22 (22V, 350mW, SOT-23)
- MMSZ5226B (22V, 500mW, SOD-123)
- P6SMB22A (22V, 1.5W, SMB)
- SMBJ22A (22V, 1.5W, SMB)
Check voltage, power rating, and package compatibility before substitution.
Features
The 1SMB5921BT3G is a 3.0W Zener diode with the following key features:
- Voltage Range: 5.6V to 150V (selectable)
- Power Dissipation: 3.0W (at 25°C)
- Package: SMB (DO-214AA) for compact surface mounting
- Tolerance: ±5% (for tighter voltage regulation)
- Low Leakage Current: Ensures efficiency in standby modes
- High Surge Capability: Robust against transient spikes
- Operating Temperature: -65°C to +150°C
Ideal for voltage regulation, surge protection, and clamping in power supplies, automotive, and industrial applications.
- Voltage Range: 5.6V to 150V (selectable)
- Power Dissipation: 3.0W (at 25°C)
- Package: SMB (DO-214AA) for compact surface mounting
- Tolerance: ±5% (for tighter voltage regulation)
- Low Leakage Current: Ensures efficiency in standby modes
- High Surge Capability: Robust against transient spikes
- Operating Temperature: -65°C to +150°C
Ideal for voltage regulation, surge protection, and clamping in power supplies, automotive, and industrial applications.
Pinout
The 1SMB5921BT3G is a 3-pin Zener diode in an SMB package.
Pin Functions:
1. Anode (A): Connected to ground or the lower voltage side.
2. Cathode (K): Connected to the positive supply or higher voltage side.
3. No Connection (NC): The third pin is unused (floating).
Key Features:
- Zener Voltage (Vz): 18V (typical).
- Power Dissipation: 3W.
- Used for voltage regulation and overvoltage protection.
Package: SMB (DO-214AA).
Pin Functions:
1. Anode (A): Connected to ground or the lower voltage side.
2. Cathode (K): Connected to the positive supply or higher voltage side.
3. No Connection (NC): The third pin is unused (floating).
Key Features:
- Zener Voltage (Vz): 18V (typical).
- Power Dissipation: 3W.
- Used for voltage regulation and overvoltage protection.
Package: SMB (DO-214AA).
Manufacturer
The 1SMB5921BT3G is manufactured by ON Semiconductor, now known as onsemi after rebranding in 2021.
onsemi is a global semiconductor company specializing in power management, analog, and sensor solutions for automotive, industrial, and consumer markets. Known for high-reliability components, it serves industries requiring efficient energy solutions.
The 1SMB5921BT3G is a transient voltage suppressor (TVS) diode, designed to protect circuits from voltage spikes.
onsemi is a global semiconductor company specializing in power management, analog, and sensor solutions for automotive, industrial, and consumer markets. Known for high-reliability components, it serves industries requiring efficient energy solutions.
The 1SMB5921BT3G is a transient voltage suppressor (TVS) diode, designed to protect circuits from voltage spikes.
Application
The 1SMB5921BT3G is a Zener diode primarily used for voltage regulation and protection in various electronic circuits. Key application areas include:
- Power Supplies: Stabilizing voltage outputs.
- Consumer Electronics: Protecting sensitive components from voltage spikes.
- Automotive Systems: Safeguarding circuits from transients.
- Industrial Equipment: Ensuring stable voltage in control systems.
- Telecommunications: Surge protection in communication devices.
Its high power dissipation (3W) and precise voltage regulation make it suitable for robust and reliable circuit protection.
- Power Supplies: Stabilizing voltage outputs.
- Consumer Electronics: Protecting sensitive components from voltage spikes.
- Automotive Systems: Safeguarding circuits from transients.
- Industrial Equipment: Ensuring stable voltage in control systems.
- Telecommunications: Surge protection in communication devices.
Its high power dissipation (3W) and precise voltage regulation make it suitable for robust and reliable circuit protection.
