MF-RX040/72-0 Bourns Inc., MF-RX040/72-0 Datasheet - Page 2

• Manufacturer Part Number: MF-RX040/72-0
• Description: FUSE PTC RESETTABLE 0.4A HOLD
• Manufacturer: Bourns Inc.
• Series: MF-RXr

Specifications of MF-RX040/72-0

• R Min/max: 0.520 ~ 0.860 Ohm
• Voltage - Max: 72V
• Time To Trip: 3.9s
• Current - Hold (ih) (max): 400mA
• Current - Trip (it): 800mA
• Current - Max: 40A
• Package / Case: Radial
• Tripping Current: 0.8A
• Initial Resistance Max: 0.86ohm
• Svhc: No SVHC (15-Dec-2010)
• Approval Category: UL Recognised
• Body Diameter: 7.4mm
• Case Material: Epoxy Polymer
• Current Max: 40A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

B
“resettable fuses” are used in a wide variety of
circuit protection applications.
Under fault conditions the device resistance
will rise exponentially and remain in a
“tripped” state, providing continuous circuit
protection until the fault is removed. Once the
fault is removed and the power cycled, the
device will return to its normal low resistance
state.
What’s New in this Edition
• MF-PSMF Series 0805 surface mount
• MF-RHT Series high temperature radial
• MF-SM013/250V telecom vertical surface
• Expanded MF-NSMF Series 1206 surface
• MF-RG Series automotive radial through-
• MF-RX/72 Series 72V radial through-hole
• CMF Series ceramic products
Bourns
products
through-hole products
mount products
mount products
hole products
products
ourns® Multifuse® family of Polymer
Positive Temperature Coefficient (PPTC)
®
Multifuse
®
Products
2
See Also
• Multifuse® automotive short form catalog
• Circuit protection selection guide for
Features/Benefits
• Resettable overcurrent protection
• Heat element
• Agency approvals - UL, CSA, TÜV
• Standard footprints and packaging options
• Low resistance
• RoHS compliance standard
• Custom designs available
Applications
• Computer
• Battery
• Automotive
• Telecommunications
• Industrial
• Consumer
dedicated Multifuse® telecom products