Glass passivated bridge rectifiers meet many applications

12th September 2019
Mick Elliott

Several products from Lite-On Semiconductor, including Glass Passivated Bridge Rectifiers and a new series of Sic Schottky Diodes have been released by New Yorker Electronics. Since 2011, the manufacturer has been the largest global AC/DC GPP Bridge supplier. The NTT, the LVF/Ultra LVF and the GBJS have high surge current capacities and high heat dissipation.

The NTT Series of Glass Passivated Rectifiers features a high forward current capability up to 8.0A in a small SMD package. It is ideal for automated placement and features reliable low-cost construction using a precise plastic moulding technique. It can be used for fast charging, USB PD & NB adapters, general purpose power adapters (<100W) and 3-in-1 DTV Power Board (<135W).

The new Ultra LVF Series is designed for AC-to-DC full-wave bridge rectification for SMPS, LED lighting, adapter, battery charger, home appliances, office equipment and telecommunication applications.

Rated at 600V PRV with robust, reliable construction in a compact, thin-profile package design and approximately 220mg, the LVF features low-forward voltage drop ideal for a printed circuit board. It, too, has high-surge current capability and weighs only approximately 6.82g.

The Lite-On Semiconductor GBJS series also boasts a low-forward voltage drop making it ideal for a printed circuit board. Like the other devices, it is encased in plastic material that has a 94V-0 UL flammability classification.

It is used in bridgeless technology in Desktops/Workstations to a 80+/90+ Silver & Gold Standard. It can be used for Server Power & Telecom Power Supply (networking stations, data center SMPS), Industrial Power Supply (street lighting, synergy panels) and home appliances (air conditioners, etc.).

The LTTH810(F)W and LTTH812(F)W models in the LTTH series are Hyper Fast Glass Passivated Rectifiers featuring PFC CCM, a VB: 1000 & 1200V, and an I(av): 8A.

It claims a Trr: 50ns @ 25°C, a Vf: 1.3 @125°C and an IFSM: 80A @ 10ms. Its counterparts, the LTTH3060PW and LTTH3060(F)W, are Super Fast Rectifiers that yield a VB: 600V and an I(av): 30A. It also exhibits a Trr: 45ns @ 25°C, Vf: 1.7 @125°C and an IFSM: 350A @ 10ms.

Both the new Hyper Fast and Super Fast Rectifiers are designed to provide a high thermal cycling performance, low thermal resistance, high reliability and efficiency and a soft recovery characteristic. They’re both used in high frequency inverters, free wheeling, AC 380V Vin for PFC Diodes and UPS (DC-to-DC converters).

New Yorker Electronics is also now distributing the new Lite-On Semi Silicone Carbide (SiC) Schottky Diodes in the LSC Series. These are designed by Lite-On for high thermal cycling performance and low thermal resistance.

They feature high reliability and efficiency allow for the replacement of Bipolar Rectifiers with Unipolar Rectifiers.

They are used in PFC Diodes, UPS, EV Chargers, Server Power and Telecom Power. The new models asserts key parameters of PFC CCM, VB: 650V/1200V, I(av): 4, 6, 8, 10A/5A and Qrr: 6nC.

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