FUZETEC TECHNOLOGY CO., LTD.
NO.
PQ19-22E
Product Specification and Approval Sheet
Version
5
Page
1/4
NOTE : Specification subject to change without notice.
Surface Mountable PTC Resettable Fuse: Lo Rho FSMD1210 Series
1. Summary
(a) RoHS Compliant & Halogen Free
(b) Applications: All high-density boards
(c) Product Features: Small surface mountable, Solid state, Faster time to trip than
standard SMD devices, Lower resistance than standard SMD devices
(d) Operation Current: 1.75~3.80A
(e) Maximum Voltage: 6V
(f) Temperature Range : -40℃ to 85℃
2. Agency Recognition
UL: File No. E211981
C-UL: *File No. E211981
TÜ V: *File No. R50090556
*Note:FSMD260-1210RZ~FSMD380-1210RZ C-UL and TÜ V Pending.
3. Electrical Characteristics (23℃)
Part
Number
Hold
Current
Trip
Current
Rated
Voltage
Max
Current
Typical
Power
Max Time to Trip
Resistance
Current
Time
RMIN
R1MAX
IH, A
IT, A
VMAX, VDC
IMAX, A
Pd, W
A
Sec
Ohms
Ohms
FSMD175-1210RZ
1.75
3.50
6
100
1.0
8.00
2.50
0.006
0.040
FSMD200-1210RZ
2.00
4.90
6
100
1.0
8.00
3.00
0.005
0.024
FSMD260-1210RZ
2.60
5.00
6
100
0.8
8.00
4.00
0.003
0.020
FSMD300-1210RZ
3.00
6.00
6
100
0.8
15.00
2.00
0.003
0.020
FSMD350-1210RZ
3.50
7.00
6
100
1.0
17.50
2.00
0.003
0.018
FSMD380-1210RZ
3.80
8.00
6
100
1.0
8.00
5.00
0.002
0.016
IH=Hold current-maximum current at which the device will not trip at 23℃still air.
IT=Trip current-minimum current at which the device will always trip at 23℃ still air.
V MAX=Maximum voltage device can withstand without damage at it rated current.(I MAX)
I MAX= Maximum fault current device can withstand without damage at rated voltage (V MAX).
Pd=Typical power dissipated-type amount of power dissipated by the device when in the tripped state in 23℃ still air environment.
RMIN=Minimum device resistance at 23℃ prior to tripping.
R1MAX=Maximum device resistance at 23℃ measured 1 hour post trip.
Termination pad characteristics
Termination pad materials: Pure Tin
FUZETEC TECHNOLOGY CO., LTD.
NO.
PQ19-22E
Product Specification and Approval Sheet
Version
5
Page
2/4
NOTE : Specification subject to change without notice.
4. FSMD Product Dimensions (Millimeters)
Part
Number
A
B
C
D
E
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
FSMD175-1210RZ
3.00
3.43
2.35
2.80
0.40
0.75
0.25
0.75
0.10
0.45
FSMD200-1210RZ
3.00
3.43
2.35
2.80
0.40
0.75
0.25
0.75
0.10
0.45
FSMD260-1210RZ
3.00
3.43
2.35
2.80
0.40
0.75
0.25
0.75
0.10
0.45
FSMD300-1210RZ
3.00
3.43
2.35
2.80
0.60
1.00
0.25
0.75
0.10
0.45
FSMD350-1210RZ
3.00
3.43
2.35
2.80
0.60
1.00
0.25
0.75
0.10
0.45
FSMD380-1210RZ
3.00
3.43
2.35
2.80
0.60
1.00
0.25
0.75
0.10
0.45
5. Thermal Derating Curve
0%
50%
100%
150%
200%
-40 -20 0 20 40 60 80
Percent of Rated Hold and Trip Current
Ambient Temperature (℃)
Lo Rho FSMD1210 series