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TE Connectivity / Holsworthy FWFU Fusible Wire Wound Fixed Resistors

TE Connectivity's (TE) Holsworthy FWFU Fusible Wire Wound Fixed Resistors are a special type of resistor that also acts as a safety fuse. TE FWFU resistors allow current to flow normally but break the circuit when the current exceeds a safe level, protecting electronic devices from damage. These resistors are commonly used in power supplies, chargers, and household appliances to help prevent overheating and short circuits. The TE FWFU resistors are different from traditional fuses because these components provide some resistance before the fuse blows, making the series useful for controlling inrush currents.

Features

  • UL recognized (UL1412): UL file no.
  • Up to 7W power
  • RoHS compliant with no exemptions
  • Moisture sensitivity level-MSL1
  • Flame-resistant coating meets UL 94V-0 requirements
  • Up to 120s fusing time

Applications

  • LED lighting/LED drivers
  • Electric vehicle (EV) chargers
  • Power supplies
  • Test and measurement equipment
  • Surge protection and voltage dividers
  • Energy meters

Specifications

  • 0.47Ω to 240Ω resistance range
  • ±5% resistance tolerance
  • 1kVAC dielectric withstand voltage
  • -55°C to +155°C operating temperature range

Construction

Chart - TE Connectivity / Holsworthy FWFU Fusible Wire Wound Fixed Resistors
Yayınlandı: 2025-07-18 | Güncellenmiş: 2025-07-23