1PMT5942C/TR13

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	51V
Tolerance:	±2%
Power - Max:	3W
Impedance (Max) (Zzt):	70 Ohms
Current - Reverse Leakage @ Vr:	1µA @ 38.8V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	DO-216AA
Supplier Device Package:	DO-216AA
Base Part Number:	1PMT5942

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Introduction

1PMT5942C/TR13 is a type of single Zener diodes, a semiconductor designed to allow current to flow in one direction, but only in the opposite direction when voltage reaches a threshold. The diode will act as an open switch in the forward direction, and a shunt regulator in the reverse direction. Zener diodes are typically used to protect against voltage spikes, and limit voltage to a specified threshold. 1PMT5942C/TR13 is particularly suited for applications where a low forward voltage drop is desired.

Optical characteristics

1PMT5942C/TR13 has the following specifications:• Breakdown Voltage: 5.6V• Maximum Forward Voltage: 1V• Maximum Reverse Leakage Current: 4×10⁻³A• Forward Voltage Temperature Coefficient: -0.013%/°C• Maximum Power Dissipation: 1W• Maximum Capacitance @ V= 0.2V/0.6V: 2000/120pF• Maximum Operating Temperature: 150°C• Typical Junction Capacitance: 10-100pF

Application Field

1PMT5942C/TR13 diodes are primarily used for voltage clamping, where the diode shunt regulator aspect can protect against voltage spikes above the breakdown voltage (5.6V). These diodes can also be used for low voltage circuits by limiting voltage to below the breakdown voltage. Additionally, they have very low forward voltage drop (1V), making them ideal for switch-mode power supplies.

Working Principle

When there is no voltage applied across the diode, it acts as an open switch and no current can flow. This is known as the forward bias. When a voltage higher than the breakdown voltage is applied, the diode acts as shunt regulator, allowing current to flow in the reverse direction, up to the rated power. The voltage is clamped to the breakdown voltage and is therefore limited to that value. This is known as reverse breakdown. The maximum power dissipation of 1PMT5942C/TR13 diodes is 1W. This is important to note when using these diodes in a circuit, as exceeding the maximum power dissipation may damage the diode.

Conclusion

1PMT5942C/TR13 is a type of single Zener diode which is suitable for applications where a low forward voltage drop is desired. These diodes are used primarily for voltage clamping, and provide protection against voltage spikes higher than the breakdown voltage. The low forward voltage drop and maximum power of 1W make them ideal for switch-mode power supplies. The breakdown voltage of 5.6V limits voltage to below this value. By understanding the specifications and working principle of 1PMT5942C/TR13 diodes, designers can make the most of their applications.

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