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 Device
PRODUCT: SMD250
DOCUMENT: SCD 22295
PCN: 544467
REV LETTER: J
REV DATE: JULY 2, 2002
PAGE NO.: 1 OF 1
Specification Status: Released
Maximum Electrical Ratings
Operating Voltage / Interrupt Current
15V / 40A
12V / 60A
5V / 125A
C
H
B
G
D
A
E
F
Marking
250
Manufacturer’s Mark
Part Identification
Notes:
1. All metal surfaces are tin plated.
2. Devices cannot be wave soldered.
3. Drawing not to scale.
TABLE I. DIMENSIONS:
H
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
mm: 8.00
9.40
--
3.00
6.00
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)
*Rounded off approximation
A
B
C
D
E
F
G
TABLE II. PERFORMANCE RATINGS:
CURRENT RATINGS**
AMPS
AT 0°C
HOLD TRIP
2.8
6.0
AMPS
AT 20°C
HOLD TRIP
2.5
5.0
TIME TO
TRIP**
TRIPPED-STATE
POWER
DISSIPATION**
OHMS
WATTS AT
AT 20°C
20°C
MIN
MAX*
MAX
0.035
0.085
1.9
RESISTANCE
VALUES
AMPS
SECONDS AT
AT 60°C
20°C, 8.0A
HOLD TRIP
MAX
1.6
3.8
25
* Maximum resistance is measured 1 hour after reflow.
** Values specified were determined using PCB’s with 0.070”X1.5 ounce copper traces.
Reference Documents:
Precedence:
Effectivity:
CAUTION:
PS300, E.N. SMD 1.0x
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.
DSP 与 ARM 处理器
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
