308 Constitution Drive
Menlo Park, CA 94025-1164
Phone: 800-227-4856
www.circuitprotection.com
PolySwitch®
PTC Devices
Overcurrent Protection Device
Raychem Circuit Protection Products
PRODUCT: ASMD250F
DOCUMENT: SCD 26584
REV LETTER: E
REV DATE: DECEMBER 19, 2008
PAGE NO.: 1 OF 1
Specification Status: Released
Maximum Electrical Ratings
Operating Voltage / Interrupt Curren t
16VDC / 40A
12VDC / 60A
5VDC / 125A
Marking
Notes:
1. All metal surfaces are tin plated.
2. Devices cannot be wave sold ered.
3. Drawing not to scale.
F
G
B
C
E
A
H
D
TABLE I. DIMENSIONS:
A B C D E F G H
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN
mm: 8.00 9.40 -- 3.00 5.99 6.71 0.56 0.71 0.56 0.71 3.68 3.94 0.66 1.37 0.43
in*: (0.315) (0.370) -- (0.118) (0.236) (0.264) (0.022) (0.028) (0.022) (0.028) (0.145) (0.155) (0.026) (0.054) (0.017)
TABLE II. PERFORMANCE RATINGS:
CURRENT RATINGS** TIME TO
TRIP** RESISTANCE
VALUES
TRIPPED-STATE
POWER
DISSIPATION**
AMPS
AT 0°C AMPS
AT 20°C AMPS
AT 60°C SECONDS AT
25°C, 9.85A OHMS
AT 25°C WATTS AT
25°C
HOLD TRIP HOLD TRIP HOLD TRIP MAX MIN MAX* TYP.
2.32 5.89 1.97 5.0 1.32 3.35 30 0.035 0.085 1.2
* Maximum resistance is measured 1 hour after reflow.
** Values specified were det ermined using PCB’s with 0.120”X2.0 ounce copp er traces.
Reference Documents: PS300, PS400
Precedence: This specification takes precedence over documents referenced herein.
Effectivity: Reference documents shall be the issue i n e ffect 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
© 2006, 2008 Tyco Electronics Corporation. All rights reserved.
HF