Schottky Rectifier NH ST545B Designed for Low Leakage Current and High Forward Surge Capability

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Product Description

Product Overview

The ST545B is a Super Low VF Schottky Rectifier from Niu Hang Specification Electronic Co. Ltd. It is designed for high efficiency with a super low forward voltage drop and high reliability due to its low leakage current and high forward surge capability. This product is suitable for use in high frequency inverters, DC/DC converters, and LED driver applications.

Product Attributes

Brand: NH (Niuhang trademark)
Model: ST545B
Product Line: FF (subject to change)
Certifications: Lead Free Finish, RoHS Compliant
Terminals: Plated Leads Solderable per MIL-STD-202, Method 208
Mounting Position: Any
Weight: App. 0.095 grams (0.0034 ounce)
Marking: White band denotes cathode

Technical Specifications

Parameter	Symbol	Test Conditions	Min.	Typ.	Max.	Unit
Maximum Ratings (Ratings at 25 ambient temperature unless otherwise specified)
Maximum DC blocking voltage	VRRM				45	V
Maximum repetitive peak reverse voltage	VRRM				45	V
Maximum RMS voltage	VRMS				31.5	V
Maximum average forward rectified current	IF(AV)	(see fig.1)			5.0	A
Peak forward surge current 8.3ms single half sine-wave superimposed on rated load	IFSM	(JEDEC method at rated TL)(see fig.5)			45	A
Operating junction temperature	TJ		-55		150
Storage temperature range	TSTG		-55		150
Electrical Characteristics (Ratings at 25 ambient temperature unless otherwise specified)
Maximum instantaneous forward voltage	VF	TA=25, IF= 5.0 A (see fig.2)(Note 1)		0.34		V
Maximum instantaneous forward voltage	VF	TA=125, IF= 5.0 A (see fig.2)(Note 1)		0.40		V
Maximum instantaneous reversecurrent at rated DC blockingvoltage	IR	VR= 45 V (see fig.3)(Note 1) TA=25			1	uA
Maximum instantaneous reversecurrent at rated DC blockingvoltage	IR	VR= 45 V (see fig.3)(Note 1) TA=125			20	uA
Typical junction capacitance	CJ	VR=4V,1MHz (see fig.4)		80%*VRRM		pF
Thermal Characteristics (Ratings at 25 ambient temperature unless otherwise specified)
Typical thermal resistance	RJA	Mounted on P.C.B. with 0.3" x 0.3" (7.62 mm x 7.62 mm) copper pad areas (Note 2)		45		/W
Typical thermal resistance	RJL			5.0		/W