Electronic Design

Component Specifier: Transformers/Inductors

TYPE/Model Features P&A Source
TRANSFORMERS
CURRENT-SENSE TRANSFORMERS CT323 20-A devices measure 5 by 5 by 4.1 mm; operate from ­55°C to 155°C; 1:20 to 1:200 turn ratios; perform at 100 kHz and above; induction values from 100 to 12,200 µH with 0.5- to 33.24-(omega) maximum resistances and 500-Vrms minimum isolation voltage $0.69 in production quatities; stock to six weeks Datatronic Distribution Inc.
www.datatronics.com
(888) 889-5391
MICROWAVE QUADRATURE HYBRIDS
Multi-Mix Zapper series
Direct, drop-in replacements for conventional surface-mount quadrature hybrids; provide 3-dB, 90° coupling; RF power handling of 325 W CW; 0.27 failure-in-time rating; "H" package measures 0.56 by 0.35 by 0.75 in., "SH" package measures 0.56 by 0.20 by 0.75 in.; maximum frequency ranges from 800 MHz to 2.3 GHz $1.35 (volume discounts available); from stock Merrimac Industries Inc.
www.merrimacind.com
(973) 575-1300
CLASS 2 TRANSFORMER
Survivor series
Classified as Inherently Limited; models available from 40 to 100 VA with either 60-Hz or 50/60-Hz ratings; primary input voltages include 115, 115/230, 200/230, and 460 V with 24-V output; include UL-Recognized Class 130 (B) insulation; IEC-, EN-, and CE-compliant designs available 40-VA model is $4.50 in 1000-unit lots; stock to eight weeks Foster Transformer
www.foster-transformer.com
(800) 963-9799
TOROIDAL TRANSFORMERS
B and R series
Designed for low-voltage halogen lamps; 120-V/60-Hz operation with a single 12-V output voltage from 50 to 300 VA; include built-in auto-resettable thermal protection; UL and cUL certified; R series models are offered in a low-profile steel enclosure with a white baked enamel finish and an automatic circuit breaker $11.05 to $47.45 (S series) or $49.40 to $101 (R series) in 100-unit lots; four to six weeks Tortran Inc.
www.tortran.com
(877) TORTRAN
INDUCTORS
POWER INDUCTORS
DZM series
Lead-free power inductors; filter and smooth ac ripple current in dc circuits using a 200°C insulation system; operate from ­40°C to 155°C; handle up to 50 A with inductance ranges of 0.10 to 3.0 µH; measure 13 by 13 by 6.0 mm; core material has a mean time between failures of 1 million hours of operation $0.38 in 100,000-unit quantities; four to six weeks CoEv Magnetics
www.circuitprotection.com
(605) 886-3326
SMT CHIP INDUCTORS
GLYC series
Epoxy encapsulated, surface-mount (SMT) chip inductors; measure 1.6 by 0.8 mm (0603 size); inductance ranges from 2.2 nH to 22 nH; 10% standard tolerance; up to 6-GHz of self-resonant frequency; packaged in 3000-piece reels $0.59 in single-reel quantities; stock to eight weeks Sprague-Goodman Electronics
www.spraguegoodman.com
(516) 334-8700
LOW-PROFILE
SMT INDUCTORS
IHLP family
Measure 12.9 by 13.2 by 6.5 mm; saturation currents from 15.5 A to 120 A; standard inductance values range from 0.1 µH to 10 µH with typical dc resistance (DCR) values as low as 0.47 m(omega), low losses at frequencies up to 5 MHz, and tolerance of ±20%; 100% lead-free $0.80 in 10,000-unit quantities; seven weeks Vishay Intertechnology
www.vishay.com
(402) 563-6866
HIGH-CURRENT
SMT INDUCTORS
CWS-5 series
Saturation flux density is over 10,000 gauss; windings are CWS proprietary flat coil with 2.4-mm width and insulated with 250°C Kapton material; operate from ­55°C to 125°C; 0.4- to 2.1-m(omega) maximum dc resistance; measure 0.52 by 0.52 by 0.21 in.; 0.3- to 2.0-µH inductance range $0.95 in 10,000-unit lots; stock to two weeks CWS Coil Winding Specialist
www.coilws.com
(714) 547-4446
POWER INDUCTORS
2100LL, 2200LL, 2300LL
Available in horizontal and vertical mounting configurations; feature through-hole mounting; self-shielding design; operate from ­55°C to 125°C; 1- to 1000-µH inductance range with a 34-A maximum rated current; measure 0.86 by 0.45 in. (2100LL), 1.10 by 0.55 in. (2200LL), and 1.28 by 0.65 in. (2300LL) $2.00 to $2.75 each; four to six weeks J.W. Miller Magnetics
www.jwmiller.com
(310) 515-1720
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