LS4148, LS4448
www.vishay.com Vishay Semiconductors
Rev. 1.9, 31-Jul-12 1Document Number: 85561
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Small Signal Fast Switching Diodes
MECHANICAL DATA
Case: QuadroMELF SOD-80
Weight: approx. 34mg
Cathode band color: black
Packaging codes/options:
GS18/10K per 13" reel (8 mm tape), 10K/box
GS08/2.5K per 7" reel (8 mm tape), 12.5K/box
FEATURES
• Silicon epitaxial planar diodes
• Electrical data identical with the devices 1N4148
and 1N4448 respectively
• Quadro Melf package
• AEC-Q101 qualified
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Extremely fast switches
PARTS TABLE
PART TYPE DIFFERENTIATION ORDERING CODE TYPE
MARKING
INTERNAL
CONSTRUCTION REMARKS
LS4148 VF = max. 1000 mV at IF = 50 mA LS4148-GS18 or LS4148-GS08 - Single diode Tape and reel
LS4448 VF = max. 1000 mV at IF = 100 mA LS4448GS18 or LS4448GS08 - Single diode Tape and reel
ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL VALUE UNIT
Repetitive peak reverse voltage VRRM 100 V
Reverse voltage VR75 V
Peak forward surge current tp = 1 μs IFSM 2A
Repetitive peak forward current IFRM 500 mA
Forward continuous current IF300 mA
Average forward current VR = 0 IF(AV) 150 mA
Power dissipation Ptot 500 mW
THERMAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL VALUE UNIT
Thermal resistance junction to ambient air On PC board
50 mm x 50 mm x 1.6 mm RthJA 300 K/W
Junction temperature Tj175 °C
Storage temperature range Tstg - 65 to + 175 °C
LS4148, LS4448
www.vishay.com Vishay Semiconductors
Rev. 1.9, 31-Jul-12 2Document Number: 85561
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
TYPICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
Fig. 1 - Forward Current vs. Forward Voltage
Fig. 2 - Forward Current vs. Forward Voltage
Fig. 3 - Reverse Current vs. Reverse Voltage
Fig. 4 - Diode Capacitance vs. Reverse Voltage
ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION PART SYMBOL MIN. TYP. MAX. UNIT
Forward voltage
IF = 5 mA LS4448 VF620 720 mV
IF = 50 mA LS4148 VF860 1000 mV
IF = 100 mA LS4448 VF930 1000 mV
Reverse current
VR = 20 V IR25 nA
VR = 20 V, Tj = 150 °C IR50 μA
VR = 75 V IR5μA
Breakdown voltage IR = 100 μA, tp/T = 0.01,
tp = 0.3 ms V(BR) 100 V
Diode capacitance VR = 0, f = 1 MHz, VHF = 50 mV CD4pF
Reverse recovery time
IF = IR = 10 mA, iR = 1 mA trr 8ns
IF = 10 mA, VR = 6 V,
iR = 0.1 x IR, RL = 100 trr 4ns
0 0.4 0.8 1.2 1.6
0.1
1
10
100
1000
IF - Forward Current (mA)
VF - Forward Voltage (V)
2.0
16640
LS4148
Tj = 25 °C
Scattering Limit
LS4448
Tj = 25 °C
Scattering Limit
0 0.4 0.8 1.2 1.6
0.1
1
10
100
1000
IF - Forward Current (mA)
VF - Forward Voltage (V)
2.0
16642
1
10
100
1000
I
R
- Reverse Current (nA)
V
R
- Reverse Voltage (V)
10 1 100
94 9098
T
j
= 25 °C
Scattering Limit
0.1 1 10
0
0.5
1.0
1.5
2.0
3.0
C
D
- Diode Capacitance (pF)
100
94 9099
2.5
V
R
- Reverse Voltage (V)
f = 1 MHz
T
j
= 25 °C
LS4148, LS4448
www.vishay.com Vishay Semiconductors
Rev. 1.9, 31-Jul-12 3Document Number: 85561
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
PACKAGE DIMENSIONS in millimeters (inches): QuadroMELF SOD-80
96 12071
Cathode identification
1.25 (0.049) min.
3.7 (0.146)
3.3 (0.130)
0.47 (0.019) max.
2.5 (0.098) max.
1.6 (0.063)
1.4 (0.055)
5 (0.197) ref.
Foot print recommendation:
2 (0.079) min.
> R3 (R0.118)
glass
1.7 (0.067)
glass
The gap between plug and glass can
be either on cathode or anode side
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Revision: 12-Mar-12 1Document Number: 91000
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