PolySwitch®
PTC Devices
Overcurrent Protection Device
PRODUCT: ASMDC300F/24
DOCUMENT: SCD29101
REV LETTER: A
REV DATE: SEPTEMBER 26, 2016
PAGE NO.: 1 OF 2
© 2016 Littelfuse,Inc Littelfuse.com
Specifications are subject to change without notice.
Revised September 26, 2016
Specification Status: Released
Maximum Electrical Rating
Voltage: 24V
DC
Short Circuit Current: 40A
Notes:
1. All terminations are tin plated.
2. Drawing not to scale
Marking:
TABLE I. DIMENSIONS:
A B C D E
MIN MAX MIN MAX MIN MAX MIN MAX MIN
mm: 7.30 7.70 0.80 1.10 4.90 5.30 0.25 0.95 0.20
in: (0.29) (0.30) (0.03) (0.04) (0.19) (0.21) (0.01) (0.04) (0.01)
TABLE II. PERFORMANCE RATINGS:
CURRENT RATINGS** TIME TO
TRIP**
RESISTANCE
VALUES
TRIPPED-STATE
POWER
DISSIPATION**
AMPERES
AT 0°C
AMPERES
AT 25°C
AMPERES
AT 60°C
AMPERES
AT 85°C
SECONDS
AT 25°C, 8.0A
OHMS
AT 25°C
WATTS AT
25°C, 24V
HOLD TRIP HOLD TRIP HOLD TRIP HOLD TRIP MAX MIN MAX* MAX
3.70 6.40 3.00 6.00 2.20 3.80 1.50 2.90 5.0 0.015 0.072 1.70
* Maximum resistance is measured 1 hour after reflow.
** Values Specified were determined using PCB’s with 0.150”X1.5 ounce copper traces.
Reference Documents: PS300, PS400
Precedence: This specification takes precedence over documents referenced herein.
Effectivity: Reference documents shall be the issue in effect on the date of invitation for bid.
CAUTION: Operation beyond the rated voltage or current may result in rupture, electrical arcing or flame.
Materials Information
ROHS Compliant ELV Compliant Pb-Free Halogen Free*
* Halogen Free refers to: Br≤900ppm, Cl≤900ppm, Br+Cl≤1500ppm.
HF