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PolySwitch?
PRODUCT: SMD185F
308 Constitution Drive
Menlo Park, CA 94025-1164
Phone: 800-227-4856
PTC Devices
Overcurrent Protection Device
DOCUMENT: SCD25659
REV LETTER: G
REV DATE: MAY 17, 2011
PAGE NO.: 1 OF 1
www.circuitprotection.com
Specification Status: Released
Maximum Electrical Rating
Operating Voltage / Interrupt Current
33V DC / 40A
C
Marking:
H
B
G
D
A
E
F
Notes:
1. All metal surfaces are tin plated.
2. Devices cannot be wave soldered.
3. Drawing not to scale.
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:
8.0 9.4
--
3.0 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
20°C, 8.0A
OHMS
AT 20°C
WATTS AT
20°C
HOLD
TRIP
HOLD
TRIP
HOLD
TRIP MAX MIN MAX*
MAX
2.20 4.40
1.85 3.60
1.31 2.62 5.0 0.065 0.165
1.5
* Maximum resistance is measured 24 hours after reflow.
** Values were determined using PCB’s with 70 mil X 2 ounce copper traces.
Agency Recognition:
Reference Documents:
Precedence:
Effectivity:
CAUTION:
Materials Information
UL, CSA, TüV
PS300
This specification takes precedence over documents referenced herein.
Reference documents shall be the issue in effect on the date of invitation for bid.
Operation beyond the rated voltage or current may result in rupture, electrical arcing or flame.
ROHS Compliant
ELV Compliant
Pb-Free
Halogen Free*
HF
* Halogen Free refers to:
Br ≤ 900ppm, Cl ≤ 900ppm, Br+Cl ≤ 1500ppm
? 2005, 2011 Tyco Electronics Corporation, a TE Connectivity Ltd. Company.
All rights reserved.
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