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Home Products Resistors Chassis Mount Resistors RW08X34A3R9JS00
RW08X34A3R9JS00
Part Number RW08X34A3R9JS00
Manufacturer Vishay Sfernice
Description RES CHAS MNT 3.9 OHM 5% 10W
Quantity Available 931 pcs new original in stock.
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Datasheets 1.RW08X34A3R9JS00.pdf2.RW08X34A3R9JS00.pdf3.RW08X34A3R9JS00.pdf
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Technical Information of RW08X34A3R9JS00
Manufacturer Part Number RW08X34A3R9JS00 Category Resistors
Manufacturer MCB Industrie/Vishay Description RES CHAS MNT 3.9 OHM 5% 10W
Package / Case Radial, Tubular Quantity Available 931 pcs
Tolerance ±5% Temperature Coefficient ±75ppm/°C
Size / Dimension 0.453" Dia x 1.339" L (11.50mm x 34.00mm) Series RW
Resistance 3.9 Ohms Power (Watts) 10W
Package / Case Radial, Tubular Package Bag
Operating Temperature -55°C ~ 450°C Mounting Feature Brackets (not included)
Lead Style Solder Lugs Height - Seated (Max) -
Features Flame Proof, Safety Failure Rate -
Composition Wirewound Coating, Housing Type Vitreous Enamel Coated
Base Product Number RW08X34  
RW08X34A3R9JS00 are New and Original in Stock, Find RW08X34A3R9JS00 electronics components stock, Datasheet, Inventory and Price at Ariat-Tech.com Online, Order RW08X34A3R9JS00 Vishay Sfernice with warrantied and confidence from Ariat Technology Limitd. Ship via DHL/FedEx/UPS. Payment with Wire Transfer or PayPal is OK.
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Frequently Asked Questions

  • How does the 10W power rating of the RW08X34A3R9JS00 resistor influence its selection in circuits with high current flow? The 10W power rating of the RW08X34A3R9JS00 resistor supports sustained current handling in chassis mount setups by allowing the element to absorb energy without immediate thermal runaway, though circuit designers must size copper traces and airflow paths accordingly to keep the resistor below its rated dissipation while accounting for the 11.50mm x 34.00mm body dimensions.
  • What practical effect does the ±5% tolerance of the RW08X34A3R9JS00 resistor have on overall circuit matching in analog designs? The ±5% tolerance of the RW08X34A3R9JS00 resistor typically requires compensation in feedback networks or voltage dividers where even small deviations could accumulate, yet its wirewound construction provides stable behavior once mounted, making it suitable when the final value can be trimmed or the tolerance is acceptable within the broader system budget.
  • How does the ±75ppm/°C temperature coefficient of the RW08X34A3R9JS00 resistor affect resistance drift in temperature-variable environments? Over the full -55°C to 450°C span the RW08X34A3R9JS00 resistor may experience a total resistance shift of approximately 8-9% due to its 75ppm/°C coefficient, which can be factored into closed-loop compensators or calibration routines to maintain accuracy without switching to tighter-tolerance parts for non-critical power stages.
  • What engineering considerations arise when using the RW08X34A3R9JS00 resistor at the upper end of its -55°C to 450°C operating temperature range? Operation near 450°C with the RW08X34A3R9JS00 resistor demands careful thermal modeling because self-heating from the 10W rating can still push the body close to the limit even with good chassis conduction, requiring evaluation of lead lug temperature and ambient airflow to avoid exceeding the rated envelope.
  • In what way does the vitreous enamel coating and flame proof feature of the RW08X34A3R9JS00 resistor contribute to safety in enclosed chassis assemblies? The vitreous enamel coating on the RW08X34A3R9JS00 resistor not only insulates the winding but also contains any internal arcing or overload events, reducing fire propagation risk when the resistor is mounted in tight compartments where component failure could otherwise spread.
  • How should the 0.453" diameter by 1.339" length physical size of the RW08X34A3R9JS00 resistor influence chassis layout and heat path planning? The compact tubular profile of the RW08X34A3R9JS00 resistor allows placement in space-constrained chassis locations while exposing a large surface area for convection and radiation, yet the 34mm length requires alignment with bracket holes to ensure even thermal contact without warping the mounting plane.
  • What connection method is employed by the RW08X34A3R9JS00 resistor and why is it advantageous for high-power through-hole installations? Solder lug leads on the RW08X34A3R9JS00 resistor enable direct mechanical clamping and soldering that can withstand vibration and thermal cycling, providing reliable low-resistance interfaces in chassis mount circuits where additional hardware would otherwise add parasitic inductance or contact resistance.
  • When might the RW08X34A3R9JS00 resistor be considered over higher-rated members of the RW series for a specific power budget? The RW08X34A3R9JS00 resistor offers an advantageous power-to-size ratio when the application requires only 10W because its smaller 11.50mm x 34.00mm body reduces overall chassis mass and cooling volume compared with larger 20W or 50W siblings, yet it may overheat faster under continuous overload.
  • In what circuit architectures would the RW08X34A3R9JS00 resistor outperform surface mount resistors for power regulation tasks? For applications needing sustained high dissipation the RW08X34A3R9JS00 resistor provides superior thermal capacity through direct chassis mounting and vitreous enamel protection, making it preferable to surface mount parts when board space is available and the 10W rating can be fully utilized without the self-heating limitations of smaller packages.
  • What derating approach should be applied to the 10W rating of the RW08X34A3R9JS00 resistor when ambient temperature rises above 50°C? Derating the 10W rating of the RW08X34A3R9JS00 resistor typically begins around 100-150W per °C above 25°C ambient, with the exact curve depending on chassis conduction and the resistor's 34mm length-to-diameter ratio, allowing engineers to predict remaining lifetime before reaching the 450°C limit.
  • How does the wirewound construction of the RW08X34A3R9JS00 resistor affect noise contribution in low-level signal circuits? The inductive nature of the wirewound element in the RW08X34A3R9JS00 resistor introduces modest series inductance that can be managed by placing bypass capacitors near the terminals, yet the overall noise floor remains low enough for most audio or sensor interfaces while the ±5% tolerance and enamel coating maintain long-term stability.
  • What reliability considerations support long-term use of the RW08X34A3R9JS00 resistor in industrial equipment? The combination of wirewound winding, vitreous enamel insulation, and ROHS3 compliant construction of the RW08X34A3R9JS00 resistor provides a robust solution for continuous industrial operation where the resistor must endure vibration and thermal cycling without open-circuit failure, although periodic inspection of lug integrity is advisable in extreme environments.
  • How does the inclusion of brackets (not included) for the RW08X34A3R9JS00 resistor affect the overall mounting assembly in high-power chassis designs? Brackets supplied separately for the RW08X34A3R9JS00 resistor allow adjustable thermal contact area and mechanical rigidity, enabling the resistor to share heat directly with the chassis while avoiding stress on the 1.339" body during thermal expansion, yet the final assembly must ensure the solder lugs remain free of torque to preserve the ±5% tolerance over time.
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