
Overview
The MMBD1204 is a diodes General Purpose made by onsemi in a SOT-23 package with 3 pins. 1 Pair Common Cathode 1.1V@300mA 100V 200mA 2A 50nA@50V SOT-23 Diodes - General Purpose ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:MMBD1204, from EasyEDA) and its footprint (Package_TO_SOT_SMD:SOT-23, from KiCad's library), ready for a KiCad board. 15,396 are in stock at JLCPCB (part C274681). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
6- Current - Rectified
- 200mA
- Diode Configuration
- 1 Pair Common Cathode
- Non-Repetitive Peak Forward Surge Current
- 2A
- Reverse Leakage Current (Ir)
- 50nA@50V
- Voltage - DC Reverse(Vr)
- 100V
- Voltage - Forward(Vf@If)
- 1.1V@300mA
Order codes
1- MMBD1204LCSC C274681
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | 1 | Unspecified |
| 2 | 2 | Unspecified |
| 3 | 3 | Unspecified |
Open-source boards using it
All 1- 2 layers83.8 × 61.5 mm

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<iframe src="https://pcbkit.io/embed/parts/onsemi/MMBD1204" title="MMBD1204 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/onsemi/MMBD1204.jpg" alt="MMBD1204" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/MMBD1204)Questions
Is there a KiCad symbol and footprint for the MMBD1204?
Yes. The symbol is EasyEDA_Cloud:MMBD1204 and the footprint Package_TO_SOT_SMD:SOT-23, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the MMBD1204?
SOT-23, with 3 pins. Its footprint is drawn on this page.
Where is the MMBD1204 datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the MMBD1204?
JLCPCB lists it as part C274681, with 15,396 in stock; the sellers' links on this page open their listings.
What can replace the MMBD1204?
Parts like it in the library: the SBAS21L by onsemi, the MMBD1503A by onsemi, the MMBD4148SE by onsemi and the BAS19 by Nexperia. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the MMBD1204?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8SBAS21L
SOT-23-55℃~+150℃ 1.25V@200mA 100nA@250V 200mA 250V 2A Independent SOT-23 Diodes - General Purpose ROHSonsemiDiodes - General PurposeMMBD1503A
SOT-231 Pair Series Connection 100nA@180V 200V 200mA 2A 900mV@300mA SOT-23 Diodes - General Purpose ROHSonsemiDiodes - General PurposeMMBD4148SE
SOT-231 Pair Series Connection 100V 1V@10mA 200mA 2A 5uA@75V SOT-23 Diodes - General Purpose ROHSonsemiDiodes - General PurposeBAS19
SOT-231.25V@200mA 100nA@100V 120V 200mA 9A Standalone SOT-23 Switching Diodes ROHSNexperiaDiodes - General PurposeSBAV70L
SOT-23-55℃~+150℃ 1 Pair Common Cathode 1.25V@150mA 100V 1uA@100V 200mA SOT-23 Diodes - General Purpose ROHSonsemiDiodes - General PurposeBAV23S
SOT-231 Pair Series Connection 1.25V@200mA 100nA@250V 200V 250mA 9A SOT-23 Diodes - General Purpose ROHSonsemiDiodes - General PurposeMMBD1503A
SOT-23Diodes - General PurposeYFWBAS31
SOT-231 Pair Series Connection 1.25V@400mA 100nA@90V 120V 1A 200mA SOT-23 Diodes - General Purpose ROHSonsemiDiodes - General Purpose