PolySwitch® Resettable PPTC Datasheet
Automotive ASMDC Series
Surface Mount
RoHS
Description
The ASMDC PPTC offers a lower profile form factor for better
space saving and provides higher VDC and IHOLD
rating, most robust performance compared to the competitors in
the market.
Features & Benefits
■ Products meet applicable
automotive industry
standards
■ Provides wider range of form
factors to enhance design
flexibility
■ Compatible with high-volume
electronics assembly
■ Restores system operation
after reset when fault
condition is removed,
thus provides safety and
protection
■ Lower Profile – Comparing to
the existing 2920 size ASMD
series
■ Able to meet most stringent
requirements for the
extreme harsh automotive
environment
■ Resettable solution against
overcurrent and short-circuit
Additional Information
■ AEC-Q200 qualified, RoHS
compliant, and
ISO/TS16949 certified
■ Suitable for standard
PCB assembly to enable
automated mass production
■ Surface-mount form factor
■ High Performance expertise
from the world’s leading
resettable overcurrent
Resources
Accessories
Samples
protection manufacturer
Applications
■ Automotive and industrial
■ Harness/junction box
transportation
protection
■ Actuators and medium
■ Powered outputs
motors
■ Electronic control modules
■ Telematics/Infotainment
■ Trace protection
Electrical Characteristics
IH(A)@
IH(A)@
IT
VMAX
(VDC
IMAX
(A)
PD Typ
(W)
Max Time-to-trip
RMIN
(Ω)
R1MAX
(Ω)
RaMAX
(Ω)
Part
Number
Ordering
Part Number
(R1MAX
)
(RaMAX
)
(A)
)
(A)
(s)
ASMDC – 24-60V
ASMDC030F
ASMDC050F
ASMDC075F
ASMDC125F/33 RF4574-000
ASMDC185F/33 RF4575-000
ASMDC300F/24 RF4576-000
RF4571-000
RF4572-000
RF4573-000
0.30
0.50
0.75
1.25
1.85
3.00
0.30
0.50
0.75
1.25
1.85
3.00
0.60
1.00
1.50
2.50
3.70
6.00
60
60
33
33
33
24
10
10
40
40
40
40
1.50
1.50
1.50
1.50
1.70
1.70
1.50
2.50
8.00
8.00
8.00
8.00
3.00
4.00
0.30
2.00
2.50
5.00
0.30
0.15
0.10
0.04
0.05
0.015
3.40
1.20
0.61
0.25
0.15
0.072
3.40
1.20
0.61
0.25
0.15
0.072
Notes:
IH
IT
: Hold current: maximum current device will pass without interruption in 25°C, unless otherwise specified
: Trip current: minimum current that will switch the device from low-resistance to high-resistance in 25°C still air, unless otherwise specified.
VMAX : Maximum voltage device can withstand without damage at rated current.
IMAX : Maximum fault current device can withstand without damage at rated voltage.
PD : Power dissipated from device when in the tripped state in 25°C still air, unless otherwise specified.
RMIN : Minimum resistance of device as supplied at 25°C, unless otherwise specified.
R1MAX : Maximum resistance of device when measured one hour post reflow, unless otherwise specified.
RaMAX : Maximum functional resistance of device after being subjected to the stresses described in PS400 at 25°C, unless otherwise specified.
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
1
Revised: GD. 07/28/22