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: RUSB250
DOCUMENT: SCD 23858
PCN: 865395
REV LETTER: F
REV DATE: FEBRUARY 3, 2003
PAGE NO.: 1 OF 1
Specification Status: RELEASED
Electrical Rating
Voltage: 16V
DC
MAX
Current: 40A MAX
Insulating Material:
Cured, Flame Retardant Epoxy Polymer
meets UL 94 V-O Requirements
Lead Material:
24 AWG Tin Lead Plated Copper Clad Steel
Marking:
Raychem Logo
Lot Identification
Part Identification
R250
(can be on back)
TABLE I. DIMENSIONS:
A B C D E
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
mm: -- 11.4 -- 18.3 4.3 5.8 7.6 -- -- 3.0
in*: -- (0.45) -- (0.72) (0.17) (0.23) (0.30) -- -- (0.12)
*Rounded off approximation
TABLE II. PERFORMANCE RATINGS :
I HOLD
RATED
CURRENT
CURRENT
RATINGS
INITIAL
RESISTANCE
VALUES
ONE HOUR
POST-TRIP
RESISTANCE
STANDARD TRIP
TIME TO TRIP
@ 8A
TRIPPED-STATE
POWER
DISSIPATION
AMPERS
AT 20°C
AMPERES
AT 20°C
OHMS
AT 20°C
OHMS
AT 20°C
SECONDS AT
20°C
WATTS
AT 20°C
HOLD HOLD TRIP MIN TYP MAX
2.50 2.50 5.00 0.02 0.03 0.06 40 1.2
Agency Recognitions: UL, CSA, TUV recognized.
Reference Documents: PS300
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.
© 2003 Tyco Electronics Corporation. All rights reserved.
