Telecom Transformers Specifications

Help with Telecom Transformers specifications:

Performance Specifications

	Operating Frequency Range		The frequency range for which the transformer will meet all guaranteed specifications.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
	DCR		Direct current resistance (DCR) is the resistance of the transformer winding measured using DC current. The DCR is most often minimized in the design of a transformer and specified as a maximum rating.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
	Insertion Loss:		Insertion loss (in dB) is defined as the measured loss through the device excluding the power division factor. It is calculated as the ratio of power output to power input.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
	3 dB Bandwidth:		The frequency range for over which the insertion loss is less than 3 dB referenced to the midband insertion loss.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
	Operating Temperature:		Full required range of ambient operating temperature.
	Search Logic:		User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
	Encapsulated Transformers		Encapsulated transformers have a protective coating of cured plastic or other encapsulant which encloses the unit and provides weatherproofing.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

Back to Top

Package / Packaging

	Package Type:
	Your choices are...
	Connectorized		Connectorized devices attach with coaxial or other types of connectors.
	Flat Pack (FPAK)		Flat pack (FPAK) devices have gull wing or flat leads on two-or-four sides. They provide exceptional thermal and electrical performance and are available in cavity-up and cavity-down configurations. Flat pack devices are typically ceramic, hermetic, and surface-mounted. They are available in a variety of body sizes and pin counts.
	Surface Mount Technology (SMT)		Surface mount technology (SMT) adds components to a printed circuit board (PCB) by soldering component leads or terminals to the top surface of the board. SMT components have a flat surface that is soldered to a flat pad on the face of the PCB. The PCB pad is typically coated with a paste-like formulation of solder and flux. With careful placement, SMT components on solder paste remain in position until elevated temperatures, usually from an infrared oven, melt the paste and solder the component leads to the PCB pads.   Industry-standard pick-and-place equipment can mount SMT components quickly, accurately, and cost-effectively. SMT is a widely used alternative to mounting processes that insert pins or terminals through holes and solder leads into place on the opposite side of the board.
	Through Hole Technology (THT)		Through hole technology (THT) mounts components on a printed circuit board (PCB) by inserting component leads through holes in the board, and then soldering the leads in place on the opposite side of the board.
	Waveguide Assembly		Waveguide assemblies are used in microwave waveguide systems. They consist of a hollow, metallic conductor with a rectangular, elliptical, or circular cross-section. Some conductors contain solid or gaseous dielectric materials.
	Other		Other unlisted, specialized, or proprietary package.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
	Packing Method
	Your choices are...
	Tape Reel		Method of packing components in a tape system and reeling specified lengths or quantities into a reel for shipping, handling, and configuring for use in industry standard, automated board assembly equipment.
	Tray		The components to be shipped are contained in a tray. Normally the tray is designed for components that have leads in four-sides (such as QFP or TGFP packages).
	Tube		The tube packing method is also known as the stick magazine method. A tube or magazine is used to store and transport electronic components. It is also used to feed components to automatic placement machines for surface and through-hole board mounting.
	Bulk Pack		Bulk pack devices are distributed as individual parts.
	Other		Other unlisted, specialized or proprietary packing method.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Back to Top

Standards / Features

	Standards / Compliance
	Your choices are...
	RoHS Compliant		Restriction of Hazardous Substances (RoHS) is a European Union (EU) directive that requires all manufacturers of electronic and electrical equipment sold in Europe to demonstrate that their products contain only minimal levels of the following hazardous substances: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyl and polybrominated diphenyl ether. RoHS became effective on July 1, 2006.
	ANSI		American National Standards Institute (ANSI) does not itself develop American National Standards, but it facilitates standards development by establishing consensus among qualified groups.
	CSA		Canadian Standards Association (CSA) establishes standards of safety for products and helps preserve the environment. CSA tests and certifies products for national in international companies.
	IEC		International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes international standards for all electrical, electronic, and related technologies.
	MIL-STD		The transformer satisfies U.S. military standards or specifications (MIL-SPEC). There are many testing standards associated with MIL standards.
	UL		Underwriters Laboratories Inc. (UL) is an independent, not-for-profit product safety testing and certification organization.
	TUV		TÜV Rhineland Berlin-Brandenburg appraises tests and certifies technical equipment and products according to international quality standards, and then registers those in compliance.
	VDE		The Germany-based VDE Testing & Certification Institute is accredited on a national and international level in the area of testing electrotechnical products. Testing is conducted for safety, electromagnetic compatibility, and other characteristics.
	WEEE Compliant		Waste Electrical and Electronics Equipment (WEE) is a European Union (EU) Directive that aims to encourage the reuse, recycling, and recovery of electrical and electronic equipment, and to improve the environmental impact and performance of this equipment. WEEE establishes the requirements and criteria for the collection, treatment, recycling, and recovery of this equipment. It makes producers responsible for financing these activities, and retailers and distributors must provide means for consumers to return used or obsolete equipment without charge.
	Other		Any other agency that that tests or certifies electrical, electronic, or electrotechnical products.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Back to Top