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