Power Electronics

New Magnetics Products

Flyback Transformer

Model 4283-1100 high-voltage transformer can drive high-impedance loads requiring up to 7500Vrms. It can be custom configured for military, medical, and aerospace applications. Advanced design and construction ensures a virtually corona-free signal. Primary-to secondary isolation is up to 18kVdc.
Datatronics Romoland, Romoland, Calif.
Circle 319

SMT Inductors

The HM64 Series low-profile (0.67 in.) SMT micropower inductors for portable platforms feature low EMI levels and are used in PCMCIA cards and disk drives. Inductance ratings range 1 μH to 47 μH — up to 1.67A (measured at 100 kHz, 0.1V) with operating frequencies up to 2 MHz. DC resistance ratings range from 0.103Ω to 0.850Ω with operating temperatures ranging from -25°C to +125°C.
BI Technologies, Fullerton, Calif.
Circle 326

SMT Power Inductors

HC1 power inductors have a 13 mm×13 mm×10 mm footprint for high-density, high-current/low-voltage applications. Foil technology provides reliability. They meet the power demands of next-generation microprocessors and dc-dc converters.
Cooper Electronic Technologies, Boynton Beach, Fla.
Circle 323

SMT Power Inductors

These high-current SMTs have integrated magnetic shielding that reduces radiation emission and protects circuits. Dc current specification includes 0.67 μH to 1.2 μH, at 30A maximum for the PM12639S, and 1.2 μH to 2.7 μH, at 27A maximum for the PM12645S. Both feature an operating temperature range of -40°C to +150°C.
J.W. Miller, Gardena, Calif.
Circle 330

Mini SMT Inductors

This 13-part SMI-1 inductors series features inductance from 10 μH at 1A to 220 μH at 0.42A. Tolerances for inductance values are 20% for the 10 μH to 47.0 μH values and 10% for the 56 μH to 220 μH values. Dimensions are 0.225 in.×0.205 in.×0.178 in. With pads solder-masked to the core, they can be IR or vapor-phase soldered to the p. c. board.
Prem Magnetics, Johnsburg, Ill.
Circle 324

Toroidal Transformers

This line of custom toroidal transformers is for electronic, electrical, medical, and audio applications. The transformers meet OEM specific requirements and feature a Class B-130C insulation system. The dielectric strength is tested to CSA/UL standards. They are efficient, compact, and weight reduced.
ATC-Frost Magnetics Inc., Oakville, Ontario, Canada
Circle 322

Thin Power Inductor Cores

Molypermalloy powder washer cores are distributed air-gapped toroidal cores made from a 79% nickel, 17% iron, and 4% molybdenum alloy powder. THINZ offers a low-height core, >1 mm, allowing heights in the 1.5-mm to 2-mm range. They come in four permeabilities and five sizes, with diameters ranging 3.5 mm to 7.8 mm.
Magnetics Div. Spang, Butler, Pa.
Circle 328

High-Current Inductors

The IHLP-2525CZ-01 high-current inductors measure 0.25 in×0.27 in.×118 in (H). Inductance ranges 0.10 μH to 4.7 μH, and DCR ranges from 1.7 mΩ to 40 mΩ at 100 kHz. Dimensions for the IHLP-5050CE-01 are 0.508in×0.520 in.×0.138 in (H). The inductance ranges from 0.47 μH to 5.6 μH, maximum DCR values are from 2 mΩ to 18 mΩ at 100 kHz, and current ratings are from 6.5A to 18A.
Vishay Dale, Malvern, Pa.
Circle 327

SMT EMI/RFI Filter Chokes

The Series 8454 surface-mount EMl/RFl filter chokes filter out unwanted interference on data or audio signal circuit board traces. The design combines Ni-Zn cores and low-capacitance windings, allowing attenuation over a wide frequency range. Rated UL94V-0, its package size is 0.26 mm (L)×0.205 mm (W)×0.71 mm (H).
API Delevan, Amherst, N.Y.
Circle 320


The MF-10D Fluxmeter magnetic measuring tool features remote operation via USB, RS-232, and IEEE-488 interfaces, an 80-character alphanumeric display, and high-speed ac and dc measurements from 10 mG to 300 kG. It includes memory for 10 measurement set-up codes, LocLogic Auto Null technology, and auto ranging.
Walker LDJ Scientific, Worcester, Mass.
Circle 329

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