FUSES
/ SICHERUNGEN
PFRX
Resettable fuses
www.schurter.com
26
Wire leaded
PTC-Fuses
Type PFRX
Cured, flame retardant epoxy
Polymer insulating material
meets UL 94V-0
requirements
Bulk packaging, tape and
reel and Ammo-Pak
available on most models
Agency recognition:
UL, CSA, TÜV
0.01
0.001
1
10
100
0.1
1
10
100
1000
PFRX.110
PFRX.135
PFRX.160PFRX.185PFRX.250
PFRX.300PFRX.375
Typical Time to Trip at 23 ˚C
Time to trip
(s)
Fault current
(A)
Test Procedures And Requirements For Model PFRX Series
Test
/ Test
Test Conditions
/ Bedingungen
Accept/Reject Criteria
Visual/Mech.
/ visuell/mech.
Verify dimensions and materials
/ Kontrolle Abmess./Mat.
Per PF physical description
Resistance
/ Widerstand
In still air @ 23 °C
/ bei ruhiger Luft
R
min
≤
R
≤
R
max
Time to Trip
/ Trip-Zeit
At spezified current V
max
, 23 °C
/ unter spez. Strom
T
≤
max.
time to trip
(sec.
)
Hold Current
/ Haltestrom
30 min. at I
hold
/ bei Haltestrom
No trip
Trip Cycle Life
/ Trip-Zyklen
V
max
, I
max
, 100 cycles
/ Zyklen
No arcing or burning
Trip Endurance
/ Zeit im Tripzustand
V
max
, 48 hours
/ Stunden
No arcing or burning
Environmental Characteristics
Operating/Storage Temperature
/ Einsatz/Lagertemp.
–40 °C
to
+85 °C
Maximum Device Surface Temperature in Tripped State
/
125 °C
Passive Aging
/ passive Alterung
+85 °C, 1000
hours
/ Std.
±5%
typ. resist. change
Humidity Aging
/ Feuchtigkeitsalterung
+85 °C, 85% R.H. 1000
hours
/ Std.
±5%
typ. resist. change
Thermal Shock *)
/ Thermischer Schock
+85 °C/–40 °C 10
times
/ Zyklen
±10%
typ. resist. change
Mechanical Shock
/ Mechanischer Schock
MIL-STD-202, Method 213,
No resistance change
Condition
1
(100 g, 6
sec.
)
Solvent Resistance
/ Lösungsmittel-Beständigkeit
MIL-STD-202, Method 215
No change
Vibration
MIL-STD-883C, Method 2007.1,
No change
Condition
A
*) MIL-STD-202, Method 213
A
E
B
D
C
Lead Material
0.81 dia. (20AWG)
Package 1
Kinked lead options available for board standoff
Applications
Almost anywhere there is a low
voltage power supply, up to 60 V
and a load to be protected, in-
cluding:
• Security- and Fire alarm
systems
• Loud speakers
• Power transformers
Typical Part Marking
Layout may vary
RX110
6180T
Manufacturer’s
Trademark
Part identification
Lot No (T=Taiwan)
Date Code (Last
Digit of Year and
Julian Date)
50 75 100
