Cautions and Warnings:

The following conditions apply to all goods within the product series of Resistors of

Würth Elektronik eiSos GmbH & Co. KG:

General:

• This electronic component is designed and manufactured for use in general electronic equipment.

• Würth Elektronik must be asked for a written approval (following the PPAP level procedure) before incorporating the components into any

equipment in the field such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control,

ship control), transportation signal, disaster prevention, medical, public information network etc. where higher safety and reliability are

especially required and/or if there is the possibility of direct damage or human injury.

• Electronic components that will be used in safety-critical or high-reliability applications, should be pre-evaluated by the customer.

• Direct mechanical impact to the product shall be prevented as material of the body, pins or termination could flake or in the worst case

it could break.

• Würth Elektronik products are qualified according to international standards, which are listed in each product reliability report. Würth

Elektronik does not warrant any customer qualified product characteristic, beyond Würth Elektronik specifications, for its validity and

sustainability over time.

• The customer is responsible for the functionality of his or her own products. All technical specifications for standard products also apply

to customer specific products.

• The component is designed and manufactured to be used within the datasheet specified values. If the usage and operation conditions

specified in the datasheet are not met, the body, pins or termination may be damaged or dissolved.

• Do not apply any kind of flexural or compressive force onto soldered or unsoldered component.

• The resistance tolerance as specified within the datasheet is only valid on the date of delivery and according to the specified

measurement criteria.

Product specific:

Storage conditions:

• A storage of Würth Elektronik products for longer than 12 months is not recommended. Within other effects, the terminals may suffer

degradation, resulting in bad solderability. Therefore, all products shall be used within the period of 12 months based on the day of

shipment.

• Do not expose the components into direct sunlight.

• The storage conditions in the original packaging are defined according to DIN EN 61760-2.

• The environment in which the resistors are operated and stored must have atmospheric characteristics and be free of dew condensation

and toxic gases (e.g. chlorine, ammonia, sulfur, hydrogen sulphide and hydrogen sulfate).

• Do not expose the resistor to environments with hazardous gas, ozone, ultraviolet rays or any kind of radiation. Avoid any contact of the

resistor with direct sunshine, saltwater, spray of water or types of oil during storage.

• The storage conditions stated in the original packaging apply to the storage time and not to the transportation time of the components.

Packaging:

•

The packaging specifications apply only to purchase orders comprising whole packaging units. If the ordered quantity exceeds or is

lower than the specified packaging unit, packaging in accordance with the packaging specifications cannot be ensured.

Operating climatic conditions:

• The resistor shall not be operated outside the operating temperature range, which is stated in the datasheet of the specific resistor.

• The specified resistance tolerance is only valid at the date of delivery.

• Do not use the resistors under high humidity, high temperature or under high or low atmospheric pressure which may affect the

resistors reliability.

• Surface temperature including self-heating must be kept below the maximum operating temperature.

• Avoid any water or heavy dust on the resistor's surface, which may cause electrical leakage, damage, overheating or corrosion.

Operating load conditions:

• Do not use the resistor with any higher rated dissipation, rated current or rated voltage than specified.

• If overload is applied to a resistor, it may emit flame, fire or smoke.

• Violation of the technical product specifications such as exceeding the specified dissipation will void the warranty.

• When the resistors are operated in ambient temperature above the rated temperature, the power rating must be derated according to

the derating curve.

• Verification and confirmation of performance characteristics of the product, after on-board mounting, is recommended.

Design of the PCB:

• The chip resistor shall be located to minimize any possible mechanical stress from deflection or board wrap.

• It is recommended to position the chip resistor in parallel to slits and perforations and as far away as possible from slits, perforations,

separation points, screw holes, frames and edges of the PCB to avoid mechanical stress.

• Determine the shape and size of the solder pads to have proper amount of solder on the terminations as the amount of solder at the

terminations has a direct effect on the resistance value and reliability of the resistor. The resistance value after soldering may change

depending on the size of the land pattern, wiring pattern or solder amount. Make sure the effect of the change of the resistance value

before using it.

• Iindividual land patterns for each termination are provided in the datasheet.

• While thermal cycling, cracking of the solder fillet may occur as the coefficients of thermal expansion between the board and the

component may be different. Pad size, amount of solder, and amount of heat radiating from the PCB must be designed carefully.

• The parasitic inductance of the chip resistor and the wiring pattern may influence current detection under high frequency usage, make

sure the effect before you use it.

• The PCB design (e.g. land pattern design and grounding planes) must be evaluated for each individual circuit to achieve the optimal

soldering results.

Würth Elektronik eiSos GmbH & Co. KG

EMC & Inductive Solutions

Max-Eyth-Str. 1

74638 Waldenburg

Germany

Tel. +49 (0) 79 42 945 - 0

www.we-online.com

eiSos@we-online.com

CHECKED

REVISION

DATE (YYYY-MM-DD)

GENERAL TOLERANCE

PROJECTION

METHOD

FPu

001.000

2023-09-14

DIN ISO 2768-1m

DESCRIPTION

TECHNICAL REFERENCE

WRIS-RSKS Thick Film - Anti-

Sulfur General Purpose

KS04021001F110KAATH0000

ORDER CODE

560112110012

SIZE/TYPE

BUSINESS UNIT

STATUS

PAGE

0402

eiSos

Valid

7/9

This electronic component has been designed and developed for usage in general electronic equipment only. This product is not authorized for use in equipment where a higher safety standard and reliability standard is especially required or where a failure of the product is reasonably expected to cause severe personal injury or death, unless the parties have executed an agreement specifically governing such use. Moreover Würth Elektronik eiSos GmbH

& Co KG products are neither designed nor intended for use in areas such as military, aerospace, aviation, nuclear control, submarine, transportation, transportation signal, disaster prevention, medical, public information network etc.. Würth Elektronik eiSos GmbH & Co KG must be informed about the intent of such usage before the design-in stage. In addition, sufficient reliability evaluation checks for safety must be performed on every electronic

component which is used in electrical circuits that require high safety and reliability functions or performance.