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1SMA5931BT3G

1.5W 18V Zener diode, SMA package, 5% tolerance, AEC-Q101, ESD Class 3

7948

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制造商零件：

1SMA5931BT3G

包装：

SMA (DO-214AC) (4.32 x 2.6 x 2.0 mm)

说明

产品概览

The 1SMA5931BT3G from onsemi is a 1.5 Watt Zener Voltage Regulator Diode with a nominal Zener voltage of 18 V in a SMA (DO-214AC) surface mount package. It is AEC-Q101 qualified and suitable for automotive and general-purpose voltage regulation applications.

主要规格

Zener Voltage (VZ)	18 V (nominal)
VZ Tolerance	5%
功率耗散	1.5 W
Zener Impedance (ZZT)	12 Ohm @ IZT
Reverse Leakage Current	500 nA max @ VR
IZM	83 mA
ESD Rating	Class 3 (>16 kV HBM)
工作温度	-65°C to +150°C
包装	SMA (DO-214AC)

特点

Nominal Zener voltage: 18 V with 5% tolerance
1.5 W power dissipation in SMA package
ESD rating Class 3 (>16 kV) per Human Body Model
Flat handling surface for accurate placement
Low profile surface mount package
AEC-Q101 qualified and PPAP capable
Pb-free and halogen-free construction

应用

Voltage regulation and stabilization
Waveform clipping circuits
MOSFET gate protection
Automotive electronics
General-purpose voltage reference

产品介绍：1SMA5931BT3G 产品介绍

The 1SMA5931BT3G from onsemi is a 1.5 Watt surface mount Zener voltage regulator diode from the 1SMA59xxBT3G series. It provides a nominal Zener voltage of 18 V with 5% tolerance. The device features ESD protection exceeding 16 kV per Human Body Model, AEC-Q101 qualification for automotive applications, and a low-profile SMA package ideal for automated assembly. The flat handling surface ensures accurate pick-and-place positioning.

工作原理：1SMA5931BT3G 工作原理

The 1SMA5931BT3G operates as a Zener diode in reverse breakdown mode. When the reverse voltage exceeds the Zener breakdown voltage of 18 V, the diode conducts and maintains a stable voltage across its terminals with low dynamic impedance of 12 Ohms. This voltage regulation characteristic makes it suitable for protecting sensitive circuitry from voltage transients and providing stable reference voltages. The device handles up to 1.5 W of power dissipation through its SMA package.

引脚说明：1SMA5931BT3G 引脚定义和功能

针脚	名称	类型	功能
1	阴极	Terminal	Cathode (indicated by polarity band)
2	阳极	Terminal	阳极

Application Scenarios:In which products and applications is1SMA5931BT3G 中古

Voltage regulation in power supplies
Overvoltage and ESD protection for MOSFET gates
Automotive electronic control units
Waveform clipping and signal limiting
General-purpose voltage reference circuits

Alternative Models:What chips are recommended as replacements for 1SMA5931BT3G

制造商	部件编号	包装	说明
onsemi	1SMA5932BT3G	SMA	20V Zener, same series
onsemi	1SMA5930BT3G	SMA	16V Zener, same series
Nexperia	BZX384C18	SOD-323	18V 300mW smaller package
Vishay	1SMB5931BT3G	SMB	18V 3W higher power

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