
www.vishay.com For technical questions, contact: filmresistors.thinfilmchip@vishay.com Document Number: 28758
4Revision: 30-Sep-08
TNPW e3
Vishay High Stability Thin Film Flat Chip Resistor
≤ 0.05 % (1000 h rated power at 70 °C)
Note
(1) E52/EN only for precision resistors with tolerance ± 0.1 % and temperature coefficient ≤ ± 25 ppm/K
DESCRIPTION
Production is strictly controlled and follows an extensive
set of instructions established for reproducibility. A
homogeneous film of metal alloy is deposited on a high grade
AI2O3 ceramic substrate 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 on 100 % of the individual
chip resistors. This includes pulse load screening for the
elimination of products with a potential risk of early life
failures according to EN 140401-801, 2.1.2.2. Only accepted
products are laid directly into the tape in accordance with EN
60286-3.
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. Excellent solderability is proven, even after
extended storage in excess of 10 years. 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, if applied,
shall be qualified by appropriate means to ensure the
long-term stability of the whole system. The resistors are
RoHS compliant, the puretin plating provides compatibility
with lead (Pb)-free and lead-containing soldering processes.
The immunity of the plating against tin whisker growth has
been proven under extensive testing.
All products comply with the GADSL (2) and the
CEFIC-EECA-EICTA (3) list of legal restrictions on
hazardous substances. This includes full compliance with
the following directives:
• 2000/53/EC End of Vehicle life Directive (ELV) and
Annex II (ELV II)
• 2002/95/EC Restriction of the use of Hazardous
Substances Directive (RoHS)
• 2002/96/EC Waste Electrical and Electronic Equipment
Directive (WEEE)
Solderability is specified for 2 years after production or
re-qualification. The permitted storage time is 20 years.
Notes
(2) Global Automotive Declarable Substance List, see www.gadsl.org
(3) CEFIC (European Chemical Industry Council), EECA (European Electronic Component Manufacturers Association), EICTA (European trade
organisation representing the information and communications technology and consumer electronics), see www.eicta.org → issue →
environment policy → chemicals → chemicals for electronics
PACKAGING
MODEL TAPE WIDTH
[mm]
PITCH
[mm]
REEL DIAMETER
[mm/inch]
PIECES PER
REEL
PACKAGING
CODE FOR
PRODUCT
DESCRIPTION
PACKAGING
CODE FOR PART
NUMBER
TYPE OF
CARRIER TAPE
TNPW0402 8 2 180/7 10 000 ET7 ED Paper
TNPW0603
TNPW0805
TNPW1206
TNPW1210
8 4 180/7 1000 E52 (1) EN (1) Paper
TNPW0603
TNPW0805
TNPW1206
TNPW1210
8 4 180/7 5000 ET1 EA Paper
TNPW0603
TNPW0805
TNPW1206
TNPW1210
8 4 330/13 20 000 ET6 EC Paper
TNPW2010 12 4 180/7 1000 E75 EY Blister
4000 E02 EF Blister
TNPW2512 12 4 180/7 1000 E75 EY Blister
2000 E67 EG Blister