RXEF250 TE Connectivity, RXEF250 Datasheet - Page 26

FUSE, PTC RESET, 72V, 2.5A, RADIAL

RXEF250

Manufacturer Part Number
RXEF250
Description
FUSE, PTC RESET, 72V, 2.5A, RADIAL
Manufacturer
TE Connectivity
Series
RXEFr
Datasheets

Specifications of RXEF250

Holding Current
2.5A
Tripping Current
5A
Initial Resistance Max
0.08ohm
Operating Voltage
72V
Ptc Fuse Case
Radial Leaded
Initial Resistance Min
0.05ohm
Resistance R1
0.13ohm
Rohs Compliant
Yes
Hold Current
2.5A
Trip Current
5A
Initial Resistance (min)
50mOhm
Initial Resistance (max)
80mOhm
Voltage Rating Max
72V
Trip Time (max)
15.6@12.5As
Power Dissipation (typ)
2.5W
Post Trip Resistance (max)
130mOhm
Wire Form
Straight
Agency Approvals
CSA/TUV/UL
Operating Temperature Min Deg. C
-40C
Operating Temperature Max Deg. C
85C
Brand/series
PolySwitch®/RXEF Series
Current, Rating
2.5 A
Dimensions
0.82x0.12x1 "
Material, Body
Epoxy Polymer
Mounting Type
PCB
Primary Type
Resettable
Resistance, Dc
0.08 Ohms
Termination
Radial
Voltage, Rating
72 VDC
Agency Recognition
UL, CSA, TUV
Ul File Number
E74889
Csa File Number
A78165
Vmax (v)
72
Imax (a)
40
Ih (room Temperature) (a)
2.5
It (room Temperature) (a)
5.00
Rmin (?)
0.05
Rmax (?)
0.080
R1 Max [post Trip] (?)
0.13
Power Dissipation (typical) (w)
2.50
Construction
Radial
Lead Type
Straight
Family Name
RXEF
Coating
Coated
Rohs/elv Compliance
RoHS compliant, ELV compliant
Lead Free Solder Processes
Wave solder capable to 240°C, Wave solder capable to 260°C, Wave solder capable to 265°C
Rohs/elv Compliance History
Always was RoHS compliant
Tuv Certificate No.
Available on request (per IEC 60730-1)
Operating Temperature (max.) (°c)
85
Application
Radial
Packaging Method
Bulk
Lead Free Status / Rohs Status
Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
RXEF250
Manufacturer:
RYC
Quantity:
54 380
Part Number:
RXEF250
Manufacturer:
RAYCHEM
Quantity:
302
Part Number:
RXEF250-2
Manufacturer:
RYC
Quantity:
28 000
13
13 5
Figure R25 - EIA Referenced Reel Dimensions for Radial-leaded Devices
Part Numbering System for Radial-leaded Devices
RUEF
1)
2)
3)
4)
5)
6)
7)
8)
9)
10) PTC devices are not recommended to be installed in applications where the device is constrained such that its PTC properties
11) Contamination of the PTC material with certain silicone-based oils or some aggressive solvents can adversely impact the
Users should independently evaluate the suitability of and test each product selected for their own application.
This product should not be used in an application where the maximum interrupt voltage or maximum interrupt current can
be exceeded in a fault condition. Operation beyond the maximum ratings or improper use may result in device damage and
possible electrical arcing and flame.
A PTC device is not a fuse - it is a nonlinear thermistor that limits current. Because under a fault condition all PTC devices
go into a high resistance state but not open circuit, hazardous voltage may be present at PTC locations.
The devices are intended for protection against occasional overcurrent or overtemperature fault conditions and should not
be used when repeated fault conditions or prolonged trip events are anticipated.
In most applications, power must be removed and the fault condition cleared in order to reset a PTC device. However, under
certain unusual conditions, a PTC device may automatically reset. Accordingly, PTC devices should not be used in an
application where an automatic reset could create a safety hazard, such as garbage disposals and blenders.
It is the responsibility of the user to determine the need for back up or fail safe protection to prevent damage that may occur
in the event of abnormal function or failure of the PTC device.
Operation in circuits with a large inductance can generate a circuit voltage (Ldi/dt) above the rated voltage of a PTC device.
Devices are not recommended for reflow soldering.
Device performance can be impacted negatively if devices are handled in a manner inconsistent with recommended electronic,
thermal, or mechanical procedures for electronic components.
are inhibited, for example in rigid potting materials or in rigid housings, which lack adequate clearance to accommodate device
expansion.
performance of the devices.
WARNING: Application Limitations for the LVR Product Line
250
w
w
1
2
Optional shape: Circular or polygonal
U
Cross section
c
n
2
a
unreeling
Direction
of
Blank = Packaged in bags
-1 = 25.4mm (1.0 inch) minimum lead length
-2 = Tape and reel
-AP = Ammo pack
-X.X = Special lead cut length (inch)
Modifier
K = Standard kinked lead
B = Special kinked lead
S = Straight lead
U = Uncoated device
Hold current indicator
Product series - An "F" at the end of product series
indicates Pb-free version of product.
Reel
Upper side
Lower side
Tape

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