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TTElectronics - Welwyn WP4S18RJA2 Wirewound Resistor

The WP4S series consists of compact, flameproof power wirewound resistors designed for high reliability in demanding applications. These resistors feature a ceramic substrate with interference fit end caps and welded terminations, offering enhanced pulse handling and flameproof protection. They are RoHS compliant with Pb-free terminations, suitable for surface mount and pre-formed lead configurations. These resistors are ideal for power electronics, industrial equipment, and where high current handling and flame resistance are critical. Their construction and robust design ensure consistent performance under harsh conditions. They also meet IEC standards for solderability and solvent resistance.

Authorized Distributors
Source:Newark
Part No:WP4S-18RJA2
Stock:267
Inv Date:06-09-2026
Price: Unit price: $1.08
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Part No:WP4S-18RJA2
Stock:0
Inv Date:06-10-2026
Price: N/A
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TTElectronics - Welwyn WP4S18RJA2 Wirewound Resistor Specifications:

  • Power rating at 25°C: 5s overload rating varies with model
  • Resistance range: from 8Ω to 6.8kΩ, 900Ω for optimized models
  • Limiting element voltage: up to 150V depending on model
  • Resistance Tolerance: <20Ω: 5%, >20Ω: 1%, 2.5%
  • Construction: Ceramic substrate with interference fit end caps, welded terminations
  • Termination Material: Hot tin dipped copper wire
  • Dimensions: Body length up to 45mm, diameter up to 4mm, lead diameter and pitch vary by model
  • Ambient temperature range: -55°C to +155°C
  • Flammability: Will not burn or emit incandescent particles under overload
  • Marking: Color bands or legend marking indicating resistance value and tolerance
  • Environmental Resistance: Solvent resistant, compliant with IEC standards
  • Pulse performance: Capable of handling pulses below 100ms with specific energy limits
  • RoHS compliant and Pb-free
  • Suitable for surface mount and pre-formed lead configurations

Buy the Buy Wirewound Resistors Series WP4S Part Number WP4S18RJA2 Online

Secure your high-performance flameproof wirewound resistor from TT Electronics online today. The WP4S series offers robust construction, high pulse handling capacity, and RoHS compliance, making it ideal for industrial and power electronics. Whether you need surface mount or pre-formed leads, our resistors deliver consistent, reliable performance under harsh conditions. With easy online ordering, fast delivery, and technical support, upgrading your equipment has never been easier. Trust TT Electronics for quality you can depend on for demanding electronics applications.

Buy TT Electronics WP4S18RJA2 flameproof power resistors now and experience reliable high pulse performance in demanding industrial applications.

Frequently Asked Questions

Where can I buy TTElectronics - Welwyn WP4S18RJA2?

You can click on the BUY or RFQ button to purchase WP4S18RJA2 from an authorized TTElectronics - Welwyn distributor.

How do I troubleshoot issues or seek technical support for part WP4S18RJA2?

You can download the WP4S18RJA2 datasheet or visit the TTElectronics - Welwyn website for support.

Who is the manufacturer of WP4S18RJA2?

TTElectronics - Welwyn

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