

Overview
The CDBA140SL-HF is a schottky Diode made by Comchip in a SMA(DO-214AC) package with 2 pins. -55℃~+100℃ 1A 200uA@40V 270mV@1A 30A 40V Independent SMA(DO-214AC) Schottky Diodes ROHS.
PCBKit's library has its KiCad symbol (Device:D_Schottky, from KiCad's library) and its footprint (Diode_SMD:D_SMA, from KiCad's library), ready for a KiCad board. 18,614 are in stock at JLCPCB (part C3012747). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
From the datasheet
6- Reverse voltage, most
- 40 V · DC blocking voltage, max · p. 1
- Forward current, most
- 1 A · Forward rectified current, max · p. 1
- Forward voltage
- 275 mV · Forward voltage drop, typical at IF = 1 A, TJ = 25°C · p. 1
- Junction, hottest
- 100 °C · Operating junction temperature, max · p. 1
- Junction to case (DO-214AC (SMA))
- 40 K/W · Junction to case thermal resistance, max · p. 1
- Junction to air (DO-214AC (SMA))
- 70 K/W · Junction to ambient thermal resistance, max · p. 1
What it is and has
5- Package
- Molded plastic, DO-214AC / SMA · p. 1
- RoHS
- RoHS Device · p. 1
- Halogen free
- Yes · p. 1
- Polarity marking
- Cathode band · p. 1
- Epoxy flammability
- UL94-V0 · p. 1
Specifications
13| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Peak repetitive reverse voltage VRRM | TA = 25°C unless otherwise noted | max 40 V | 1 |
| Working peak reverse voltage VRWM | IR = 1mA, TJ = 25°C | max 40 V | 1 |
| DC blocking voltage VDC | TA = 25°C unless otherwise noted | max 40 V | 1 |
| Forward rectified current IO | TA = 25°C unless otherwise noted | max 1 A | 1 |
| Forward surge current IFSM | 8.3ms single half sine-wave superimposed on rate load (JEDEC method) | max 30 A | 1 |
| Peak repetitive reverse surge current IRRM | 2us - 1KHz | max 2 A | 1 |
| Thermal resistance RθJC | Junction to case; DO-214AC (SMA) | max 40 °C/W | 1 |
| Thermal resistance RθJA | Junction to ambient; DO-214AC (SMA) | max 70 °C/W | 1 |
| Operating Temperature range TJ | min -55 · max 100 °C | 1 | |
| Storage temperature range TSTG | min -55 · max 150 °C | 1 | |
| Forward voltage drop VF | IF = 1A, TJ = 25°C | typ 275 · max 330 mV | 1 |
| Reverse current IR | VR = VRRM, TJ = 25°C | typ 0.2 · max 1 mA | 1 |
| Reverse current IR | VR = VRRM, TJ = 100°C | max 80 mA | 1 |
Parameters
11- Current - Rectified
- 1A
- Diode Configuration
- Standalone
- Junction Temperature(Max)
- 100℃
- Non-Repetitive Peak Forward Surge Current
- 30A
- Operating Junction Temperature Range
- -55℃~+100℃
- Reverse Leakage Current (Ir)
- 200uA@40V
- Thermal Resistance(Junction to Ambient)
- 70℃/W
- Thermal Resistance(Junction to Case)
- 40℃/W
- Voltage - DC Reverse(Vr)
- 40V
- Voltage - Forward(Vf)
- 275mV
- Voltage - Forward(Vf@If)
- 270mV@1A
Order codes
1- CDBA140SL-HFLCSC C3012747
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
Open-source boards using it
All 1- 4 layers42 × 42 mm

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Is there a KiCad symbol and footprint for the CDBA140SL-HF?
Yes. The symbol is Device:D_Schottky and the footprint Diode_SMD:D_SMA, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the CDBA140SL-HF?
SMA(DO-214AC), with 2 pins. Its footprint is drawn on this page.
Where is the CDBA140SL-HF datasheet?
Comchip publishes it: the Datasheet link on this page opens it.
Where can I order the CDBA140SL-HF?
JLCPCB lists it as part C3012747, with 18,614 in stock; the sellers' links on this page open their listings.
What can replace the CDBA140SL-HF?
Parts like it in the library: the SS34 by MDD, the SS14 by MDD, the SS54 by MDD and the SS54 by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the CDBA140SL-HF?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
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