Microsemi UPS140 Datasheet
580 Pleasant St.
Watertown, MA 02472
PH: (617) 926-0404
FAX: (617) 924-1235
SURFACE MOUNT
1A SCHOTTKY RECTIFIER
POWERMITE Power Surface Mount Package
Features:Features:
• Low Profile -- Maximum Height of 1.1 mm
• Small Footprint -- Footprint Area of 8.45 mm
• Low VF Provides Higher Efficiency and Extends Battery Life
• Supplied in 12 mm Tape and Reel -- 12,000 Units per Reel
• Low Thermal Resistance with Direct Thermal Path of Die on Exposed
Cathode Heat Sink
2
Mechanical Characteristics:Mechanical Characteristics:
• Powermite is JEDEC Registered as DO-216AA
• Case: Molded Epoxy
• Epoxy Meets UL94, VO at 1/8"
• Weight: 62 mg (appoximately)
• Device Marking: S20
• Lead and Mounting Surface Temperature for Soldering Purposes,
• 260°°C Maximum for 10 Seconds
UPS140
SCHOTTKY BARRIER
RECTIFIER
1.0 AMPERES
40 VOLTS
Description:Description:
The UPS140 Powermite Schottky rectifier is designed to offer optimized forward voltage characteristics for
battery powered portable products such as cellular and cordless phones, chargers, notebook computers,
printers, PDA's and PCMCIA cards. Typical applications include ac/dc and dc-dc converters, reverse battery
protection and "Oring" of multiple supply voltages.
The Powermite's patented heat sink design offers the same thermal performance rating as an SMA while being
50% smaller in footprint area and less than 1 mm in overall height. The result is a unique, highly efficient
Schottky rectifier in a space saving surface mount package.
Maximum Ratings
RATING SYMBOL VALUE UNIT
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
Average Rectified Forward Current (At Rated VR, TC = 135°°C)
Peak Repetitive Forward Current
(At Rated VR, Square Wave, 100 KHz, TC = 135°°C
Non-Repetitive Peak Surge Current
(Non-Repetitive peak surge current, halfwave, single phase, 60 Hz)
Storage / Operating Case Temperature T
Operating Junction Temperature T
Voltage Rate of Change (Rated VR, TJ = 25°°C)
V
RRM
V
RWM
V
R
I
O
I
FRM
I
FSM
stg, TC
J
dv/dt 10,000
40 V
1.0 A
2.0 A
50
-55 to 150
-55 to 125
A
°°C
°°C
V/µµs
Thermal Characteristics
Thermal Resistance - Junction-to-Lead (Anode) (1}
Thermal Resistance - Junction-to-Tab (Cathode) (1}
Thermal Resistance - Junction-to-Ambient (1}
(1) Pulse Test: Pulse Width ≤≤ 250 µµs, Duty Cycle ≤≤ 2%.
MSC1359.PDF 7/28/99
Rtji
Rtjtab
Rtja
35
15
248
°°C/W
Electrical Characteristics
Maximum Instantaneous Forward Voltage (1) V
(IF = 0.1 A)
(IF = 1.0 A)
(IF = 3.0 A)
Maximum Instantaneous Reverse Current I
(VR = 40 V) 0.40
(1) Pulse Test: Pulse Width ≤≤ 250 µµs, Duty Cycle ≤≤ 2%.
MECHANICAL DIMENSIONS
F
R
UPS140
TJ = 25°°C
0.36
0.45
0.75
TJ = 25°°C
V
mA
MSC1359.PDF 7/28/99
Figure 1
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