Z300-Cxx
www.vishay.com
Vishay Draloric
Revision: 14-Mar-17
3
Document Number: 21027
For technical questions, contact: ww1resistors@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
Wirewound resistors are best suited for use in high power,
high current applications. The silicon cement lacquer
coating enables Z300-Cxx to withstand challenging high
voltage surge conditions.
Suitable ohmic value with desired surge voltage handling
can be selected using table “Minimum Resistance Value for
Handling Surge Voltage as per IEC 61000-4-5 (1.2 / 50 μs
Pulse)” on page 2. The ceramic meets the highest
requirements against mechanical resistance, thermal
shocks, dielectric strength, and insulation resistance at high
temperatures. With different diameters and turn spacing's, a
large ohmic value range can be covered. The coating is
resistant to cleaning solvents specified in IEC 60115-1
(1)
.
The resistors are marked with resistance and tolerance.
Product quality is verified by testing procedures, performed
on all individual resistors. Resistance is measured on the
lead wires at a distance of 6 mm from the resistor body. If a
greater length of lead wire is used in the application, the user
may need to consider the additional wire resistance,
particularly with low resistance products.
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
.
ASSEMBLY
The resistors are axial leaded for soldering. The terminals of
the resistors are completely lead (Pb)-free, the special tin
plating provides compatibility with lead (Pb)-free and
lead-containing soldering processes.
Special lead forms may be available on request, please
inquire at ww1resistors@vishay.com
.
These components are high dissipation power resistors,
customers are advised to use a high melting point solder.
APPLICATION INFORMATION
The power dissipation of the resistor generates a
temperature rise with respect to the ambient. The
permissible dissipation is derated for temperatures above
40 °C, as shown in the derating diagram, in order to avoid
overheating of the resistor. The heat dissipated from the
resistor may affect adjacent components, hence proper
clearance will be required in order to avoid overheating. The
resistive wire is hermetically encapsulated.
All materials used are non-flammable and inorganic. These
resistors do not feature a limited lifetime when operated
within the permissible limits. However, resistance value drift
increasing over operating time may result in exceeding a
limit acceptable to the specific application, thereby
establishing a functional lifetime.
RELATED PRODUCTS
In similar continuous power applications and challenging
environmental conditions, see the datasheets:
• AC Series - Cemented Wirewound Resistors
www.vishay.com/doc?28730
• Z300-C00 - Commercial Axial Cemented Wirewound
Resistors
www.vishay.com/doc?21047
For precision applications, there is the cement coated PAC
series, see the datasheet:
• PAC Series - Cemented Wirewound Precision Resistors
www.vishay.com/doc?28731
Notes
(1)
Other cleaning solvents with aggressive chemicals should be evaluated in actual cleaning process for their suitability
(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
