Diode Ratings and Characteristics

Absolute maximum ratings and electrical characteristics are described in the data sheet. This section describes the ratings and characteristics described in our data sheet.

Absolute Maximum Ratings

The absolute maximum ratings are allowable values that should not be exceeded even instantaneously. If the values are exceeded, the semiconductor may be damaged. Therefore, it is required to design electronic devices that use semiconductors so that stress exceeding the values is not applied to semiconductors even instantaneously.
Absolute maximum ratings do not guarantee reliability. Even within the absolute maximum ratings, if the recommended conditions are exceeded, their durability decreases and as a result, semiconductors may not withstand long-term use.
The parameters specified in the absolute maximum ratings are listed below. The parameters of absolute maximum ratings listed depend on the diode type.

Parameter Symbol Unit Description Waveform Image
Repetitive Peak Reverse Voltage VRM V Maximum reverse voltage (AC) that can be applied repeatedly
Nonrepetitive Peak Reverse Voltage VRSM V The maximum reverse voltage that can be applied without repetition
Peak Pulse Reverse Current IRSM A The maximum leakage current that can flow in the reverse direction without repetition
Power Dissipation PD W The maximum power dissipation that the product can maintain its function
DC Blocking Voltage VDC V The maximum reverse voltage (DC) that can be applied repeatedly
Peak Pulse Reverse Power PRSM W The maximum power dissipation that can be permitted in the reverse direction without repetition
Average Forward Current IF(AV) A Average forward current, IF
Surge Forward Current IFSM A The maximum current that can flow in the forward direction without repetition
I2t Limiting Value I2t A2s IFSM limit value that can flow with a pulse width of 1 ms ≤ tP < 100 ms
Junction Temperature TJ °C Temperature of semiconductor junction in the product
Storage Temperature TSTG °C Temperature at which the product can be stored when the device is not operating

Electrical Characteristics

Electrical characteristics show the performance of a product by specifying conditions such as temperature, voltage, and current. The parameters of electrical characteristics to be listed depend on the type of diode.

Parameter Symbol Unit Description
Forward Voltage Drop VF V Voltage drop that occurs when a current flows in the forward direction
Forward Current IF A Current that flows when a voltage is applied in the forward direction
Reverse Voltage VR V Voltage drop that occurs when a current flows in the reverse direction
Reverse Leakage Current IR μA Leakage current that flows when a voltage is applied in the reverse direction
Reverse Leakage Current under High Temperature H∙IR mA Leakage current that flows when a voltage is applied in the reverse direction at high temperature
Breakdown Voltage VZ V Voltage when a voltage is applied in the reverse direction and current flows rapidly
Reverse Current IZ A Current that flows when reverse breakdown voltage, VZ, is applied
Thermal Resistance Rth(J-C) °C/W Thermal resistance between semiconductor junction and case
Rth(J-L) °C/W Thermal resistance between semiconductor junction and lead
Breakdown Voltage Temperature Coefficient rZ mV/°C The coefficient that shows the relationship between VZ and temperature
Breakdown Region Equivalent Resistance RZ Ω A value that shows the relationship between VZ and current
Reverse Recovery Time trr μs The time from when the recovery current flows until the recovery current decreases
Pulse Width tP ms Time of current flowing through the product and the applied voltage
Case Temperature TC °C Product case temperature
Lead Temperature TL °C Product lead temperature
Ambient Temperature TA °C Ambient temperature of the product

Mechanical Characteristics

These are the mechanical characteristics of a product. The parameters of mechanical characteristics to be listed depend on the type of diode.

Parameter Unit Description
Heatsink Mounting Screw Torque N∙m Maximum tolerance of heatsink mounting screw torque
Package Weight g Product weight

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