Tyco / Electronics
Raychem Circuit Protection
308 Constitution Drive
Menlo Park, CA 94025-1164
Phone: 800-227-4856
Fax: 800-227-4866
PolySwitch®
PTC Devices
Overcurrent Protection Devi ce
PRODUCT: SMD185F
DOCUMENT: SCD 25659
PCN: 748040
REV LETTER: C
REV DATE: MARCH 28, 2005
PAGE NO.: 1 OF 1
Specification Status: Released
Maximum Electrical Ratings
Voltage: 33VDC MAX
Current: 40A MAX
Marking:
Notes:
1. All metal surfaces are tin plated.
2. Devices cannot be wave soldered.
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: 8.0 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: UL, CSA, TÜV
Reference Documents: PS300, E.N. SMD 1.0x
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
© 2005 Tyco Electronics Corporation. All rights reserved.
