DS30670 Rev. 5 - 2 1 of 3 B140HW
www.diodes.com  Diodes Incorporated
B140HW
1.0A SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER
Maximum Ratings @ TA = 25°C unless otherwise specified
• Guard Ring Die Construction for
Transient Protection
• Very Low Leakage Current
• Low Forward Voltage Drop
• Lead Free By Design/RoHS Compliant (Note 3)
• "Green Device" (Note 4)
Mechanical Data
Single phase, half wave, 60Hz, resistive or inductive load. For capacitive load, derate current by 20%.
Characteristic Symbol Value Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR
40 V
RMS Reverse Voltage VR(RMS) 28 V
Average Forward Current (See Figure 1) IF(AV) 1.0 A
Non-Repetitive Peak Forward Surge Current 8.3ms
single half sine-wave superimposed on rated load IFSM 6.6 A
Repetitive Peak Reverse Current
tp = 2µs square wave, f = 1KHz IRRM 0.5 A
Non-Repetitive Peak Reverse Current
tp = 100µs square wave IRSM 1.0 A
Power Dissipation (Note 2)
(Note 5) Pd
350
410 mW
Typical Thermal Resistance Junction to Ambient (Note 2)
(Note 5) RθJA
360
305 °C/W
Operating Temperature Range Tj -65 to +125 °C
Storage Temperature Range TSTG -65 to +125 °C
Notes: 1. Short duration pulse test used to minimize self-heating effect.
2. Part mounted on FR-4 board with recommended pad layout, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
3. No purposefully added lead.
4. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com/products/lead_free/index.php.
5. Part mounted on polymide board with pad sizes 0.24" x 0.16".
6. Part mounting such that RθJA = 175°C/W.
• Case: SOD-123
• Case Material: Molded Plastic, “Green” Molding
Compound. UL Flammability Classification Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020C
• Terminals: Finish  Matte Tin Finish annealed over Alloy 42
leadframe. Solderable per MIL-STD-202, Method 208
• Polarity: Cathode Band
• Marking: Date Code & Type Code, See Page 3
• Type Code: LO
• Ordering Information: See Page 3
• Weight: 0.01 grams (approximate)
Electrical Characteristics @ TA = 25°C unless otherwise specified
Characteristic Symbol Min Typ Max Unit Test Condition
Reverse Breakdown Voltage (Note 1) V(BR)R 40   V IR = 40µA
Forward Voltage VF  0.48 0.550.51 V IF = 1A, TJ = 25°C IF = 1A, TJ = 100°C
Leakage Current (Note 1) IR





0.2
10
40
5
µA
µA
mA
VR = 5V, TJ = 25°C
VR = 40V, TJ = 25°C
VR = 40V, TA = 100°C
SOD-123
Dim Min Max
A 3.55 3.85
B 2.55 2.85
C 1.40 1.70
D — 1.35
E 0.45 0.650.55 Typical
G 0.25 —
H 0.11 Typical
J — 0.10
α 0° 8°
All Dimensions in mm

T
CU
DO
RP

WE
N
Lead-free Green
Features
AB
C
D
E
G
H J