Low Voltage NH U1M Surface Mount Ultrafast Rectifier with High Surge Current and Low Reverse Leakage
Product Overview
The U1A thru U1M series are Surface Mount Ultrafast Rectifiers from Niu Hang Specification Electronic Co. Ltd. These rectifiers are designed for low voltage, high frequency applications including inverters, DC/DC converters, LED drivers, free-wheeling, and polarity protection. They feature a glass-passivated junction chip, low reverse leakage, and high forward surge current capability. The plastic package carries an Underwriters Laboratory Flammability Classification 94V-0 rating.
Product Attributes
- Brand: Niu Hang (niuhang trademark)
- Origin: China (implied by company name and website)
- Material: Molded Plastic (Epoxy: UL 94V-0 rate flame retardant)
- Certifications: Underwriters Laboratory Flammability Classification 94V-0
- Color: White edge for polarity mark
Technical Specifications
| Model | Max. Repetitive Peak Reverse Voltage (VRRM) | Max. Average Forward Rectified Current (IF(AV)) | Max. Forward Voltage (VF) at 1.0A | Max. Reverse Recovery Time (TRR) | Typical Junction Capacitance (CJ) | Operating Junction & Storage Temp. (TJ, TSTG) |
|---|---|---|---|---|---|---|
| U1A | 50V | 1.0A | 1.7V | 180ns | 15pF | -55 to +150 C |
| U1B | 100V | |||||
| U1D | 200V | |||||
| U1G | 400V | |||||
| U1J | 600V | |||||
| U1K | 800V | |||||
| U1M | 1000V | |||||
| UD | 200V | |||||
| UG | 400V | |||||
| UJ | 600V | |||||
| UK | 800V | |||||
| UM | 1000V | |||||
| U1A thru U1M | 50-1000V |
| Parameter | Symbol | U1A | U1B | Unit |
|---|---|---|---|---|
| Maximum RMS voltage | VRMS | 35 | 70 | V |
| Maximum DC blocking voltage | VDC | 50 | 100 | V |
| Peak forward surge current 8.3ms single half sine-wave | IFSM | 30 | 30 | A |
| Maximum instantaneous reverse current at rated DC blocking voltage | IRRM | 1 | 1 | uA |
| Typical thermal resistance (junction to lead, vertical P.C.B. mounted, 0.375" lead length) | RJL | 100 | 100 | C/W |
| Typical thermal resistance (junction to ambient, vertical P.C.B. mounted) | RJA | 75 | 75 | C/W |
2410121747_NH-U1M_C7427767.pdf
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