PolySwitch®
PTC Devices
308 Constitution Drive
Menlo Park, CA 94025-1164
Phone: 800-227-4856
www.circuitprotection.com
PRODUCT: SMD185F
DOCUMENT: SCD25659
REV LETTER: G
REV DATE: MAY 17, 2011
PAGE NO.: 1 OF 1
Overcurrent Protection Device
Specification Status: Released
Maximum Electrical Rating
Operating Voltage / Interrupt Current
C
33V
DC
/ 40A
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
MIN
MAX
mm: 8.0
9.4
in*: (0.315) (0.370)
MIN
--
--
B
H
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
3.0
5.99
6.71
0.56
0.71
0.56
0.71
3.68
3.94
0.66
1.37
0.43
(0.118) (0.236) (0.264) (0.022) (0.028) (0.022) (0.028) (0.145) (0.155) (0.026) (0.054) (0.017)
C
D
E
F
G
TABLE II. PERFORMANCE RATINGS:
CURRENT RATINGS**
TIME TO
TRIP**
RESISTANCE
VALUES
TRIPPED-STATE
POWER
DISSIPATION**
WATTS AT
20°C
MAX
1.5
AMPS
AT 0°C
HOLD TRIP
2.20
4.40
AMPS
AT 20°C
HOLD TRIP
1.85
3.60
AMPS
SECONDS AT
OHMS
AT 60°C
20°C, 8.0A
AT 20°C
HOLD TRIP
MAX
MIN
MAX*
1.31
2.62
5.0
0.065 0.165
* 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:
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.
Materials Information
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.