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1SMB5918BT3G

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DIODE ZENER 5.1V 3W SMB

HerstellerOnsemi
Herstellerteil #1SMB5918BT3G
Paket SMB-2
Auf Lager2078

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Spezifikationen

Attribut	Wert
Package	Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus	Active
Voltage-Zener(Nom)(Vz)	5.1 V
Tolerance	±5%
Power-Max	3 W
Impedance(Max)(Zzt)	4 Ohms
Current-ReverseLeakage@Vr	5 µA @ 2 V
Voltage-Forward(Vf)(Max)@If	1.5 V @ 200 mA
OperatingTemperature	-65°C ~ 150°C
MountingType	Surface Mount
Package/Case	DO-214AA, SMB

Übersicht

Description

The 1SMB5918BT3G is a surface-mount transient voltage suppressor (TVS) diode designed to protect sensitive electronics from voltage spikes and transients. Key features:
- Voltage Range: 5.8V (standoff) to 9.2V (breakdown).
- Peak Pulse Power: 600W (1ms pulse).
- Low Clamping Voltage: Ensures effective protection.
- Package: SMB (DO-214AA) for compact PCB mounting.
Applications:
- ESD/EMI protection in consumer electronics, automotive systems, and communication devices.
- Surge suppression in power supplies and data lines.
Advantages:
- Fast response time (<1ns).
- RoHS-compliant and halogen-free.
Ideal for safeguarding circuits against transient overvoltage events.

Equivalent

Equivalent products to the 1SMB5918BT3G (18V Zener diode) include:
- BZT52C18 (18V, 500mW)
- MMSZ5248B (18V, 500mW)
- PZM18NB (18V, 1W)
- 1N4746A (18V, 1W)
These are common substitutes with similar voltage and power ratings. Verify specs for your application.

Features

The 1SMB5918BT3G is a Zener diode with the following key features:
- Voltage Range: 18V (nominal Zener voltage).
- Power Dissipation: 3W (high power handling).
- Package: SMB (surface-mount, compact design).
- Tolerance: ±5% (typical for Zener diodes).
- Operating Temperature: -65°C to +150°C (wide range).
- Applications: Voltage regulation, surge protection, and clamping circuits.
- Low Leakage Current: Ensures efficiency in reverse bias.
This diode is ideal for power supply stabilization and transient voltage suppression in automotive, industrial, and consumer electronics. Its SMB package allows for efficient PCB space utilization.

Pinout

The 1SMB5918BT3G is a 3-pin surface-mount transient voltage suppressor (TVS) diode designed for overvoltage protection.
Pin Functions:
1. Anode (A) – Connects to the protected circuit.
2. Cathode (K) – Connects to ground.
3. No Connection (NC) – Unused pin for mechanical stability.
Key Features:
- Breakdown Voltage: 18V
- Peak Pulse Power: 600W
- Bi-directional clamping for surge protection.
Used in ESD/surge protection for sensitive electronics.

Manufacturer

The 1SMB5918BT3G 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 technologies. It serves industries like automotive, industrial, and consumer electronics, focusing on energy-efficient solutions.
The 1SMB5918BT3G is a transient voltage suppressor (TVS) diode designed for surge protection in electronic circuits.

Application

The 1SMB5918BT3G is a transient voltage suppressor (TVS) diode used for overvoltage protection in various applications, including:
- Consumer Electronics: Safeguards USB ports, HDMI, and other interfaces.
- Automotive Systems: Protects ECUs, sensors, and infotainment from voltage spikes.
- Industrial Equipment: Shields communication lines (RS-485, CAN) and power supplies.
- Telecom & Networking: Guards against surges in routers, switches, and base stations.
- Power Management: Used in DC-DC converters and battery protection circuits.
Its high surge capability and fast response make it ideal for ESD and transient suppression in sensitive electronics.

Package

The 1SMB5918BT3G is a Zener diode in a SMB (DO-214AA) surface-mount package. It features a compact, rectangular plastic body with two terminals, designed for high-power dissipation (up to 3W). The SMB package is commonly used for voltage regulation and transient suppression in space-constrained applications. Its dimensions are approximately 4.6mm x 3.6mm x 2.3mm.