Schottky Rectifier NH ST545B Designed for Low Leakage Current and High Forward Surge Capability
Key Attributes
Model Number:
ST545B
Product Custom Attributes
Reverse Leakage Current (Ir):
5uA@45V
Non-Repetitive Peak Forward Surge Current:
120A
Operating Junction Temperature Range:
-55℃~+150℃
Voltage - DC Reverse (Vr) (Max):
45V
Voltage - Forward(Vf@If):
450mV@5A
Current - Rectified:
5A
Mfr. Part #:
ST545B
Package:
SMB
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 | |||
2410121721_NH-ST545B_C7428204.pdf
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