TNPW e3
www.vishay.com Vishay
Revision: 12-May-16 5Document Number: 28758
For technical questions, contact: thinfilmchip@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
DESCRIPTION
Production is strictly controlled and follows an extensive set
of instructions established for reproducibility. A
homogeneous film of special metal alloy is deposited on a
high grade ceramic substrate (AI2O3) and conditioned to
achieve the desired temperature coefficient. Specially
designed inner contacts are deposited on both sides. A
special laser is used to achieve the target value by smoothly
fine trimming the resistive layer without damaging the
ceramics. A further conditioning is applied in order to
stabilize the trimming result. The resistor elements are
covered by a protective coating designed for electrical,
mechanical and climatic protection. The terminations
receive a final pure tin on nickel plating.
The result of the determined production is verified by an
extensive testing procedure and optical inspection
performed on 100 % of the individual chip resistors. This
includes full screening for the elimination of products with a
potential risk of early life failures (feasible for R 10 ). Only
accepted products are laid directly into the tape in
accordance with IEC 60286-3, Type 1a (1).
ASSEMBLY
The resistors are suitable for processing on automatic SMD
assembly systems. They are suitable for automatic
soldering using wave, reflow or vapour phase as shown in
IEC 61760-1
(1). The encapsulation is resistant to all
cleaning solvents commonly used in the electronics
industry, including alcohols, esters and aqueous solutions.
The suitability of conformal coatings, potting compounds
and their processes, if applied, shall be qualified by
appropriate means to ensure the long-term stability of the
whole system.
The resistors are RoHS-compliant, the pure tin plating
provides compatibility with lead (Pb)-free and
lead-containing soldering processes. Solderability is
specified for 2 years after production or requalification. The
permitted storage time is 20 years. The immunity of the
plating against tin whisker growth has been proven under
extensive testing.
MATERIALS
Vishay acknowledges the following systems for the
regulation of hazardous substances:
• IEC 62474, Material Declaration for Products of and for the
Electrotechnical Industry, with the list of declarable
substances given therein (2)
• The Global Automotive Declarable Substance List
(GADSL) (3)
• The REACH regulation (1907/2006/EC) and the related list
of substances with very high concern (SVHC) (4) for its
supply chain
The products do not contain any of the banned substances
as per IEC 62474, GADSL, or the SVHC list, see
www.vishay.com/how/leadfree.
Hence the products fully comply with the following
directives:
• 2000/53/EC End-of-Life Vehicle Directive (ELV) and
Annex II (ELV II)
• 2011/65/EU Restriction of the Use of Hazardous
Substances Directive (RoHS) with amendment
2015/863/EU
• 2012/19/EU Waste Electrical and Electronic Equipment
Directive (WEEE)
Vishay pursues the elimination of conflict minerals from its
supply chain, see the Conflict Minerals Policy at
www.vishay.com/doc?49037.
RELATED PRODUCTS
The TNPW with SnPb termination plating is designed for
those applications, where lead bearing terminations are
mandatory. For ordering TNPW with SnPb terminations
please refer to latest edition of datasheet TNPW
(www.vishay.com/doc?31006).
TNPU e3 ultra precision thin film flat chip resistors combine
the proven reliability of TNPW e3 products with a most
advanced level of precision and stability
(www.vishay.com/doc?28779).
TNPS .... ESCC high-reliability thin film chip resistors are the
premium choice for design and manufacture of equipment,
where matured technology and proven reliability are
of utmost importance. They are regularly used in
communication and research satellites and fit equally well
into aircraft and military electronic systems.
Approval of the TNPS .... ESCC products is granted by the
European Space Components Coordination and registered
in the ESCC Qualified Parts List, REP005
(www.vishay.com/doc?28789).
TNPV e3 High Voltage Thin Film Flat Chip Resistors are
designed for most fields of modern electronics where
precision, reliability and stability at high operating voltage
are primary concerns (www.vishay.com/doc?28881).
Notes
(1) The quoted IEC standards are also released as EN standards with the same number and identical contents.
(2) The IEC 62474 list of declarable substances is maintained in a dedicated database, which is available at http://std.iec.ch/iec62474.
(3) The Global Automotive Declarable Substance List (GADSL) is maintained by the American Chemistry Council and available at
www.gadsl.org.
(4) The SVHC list is maintained by the European Chemical Agency (ECHA) and available at http://echa.europa.eu/candidate-list-table.