Polarity Protection for Sensitive Automotive Electronics
To view specs, inventory availability, pricing and delivery, please click on desired part number.
Automotive electronic circuits must be protected against reverse polarity. Such events may occur e. g. during service time or jump-starts of the vehicle. For this purpose, hardware designers must take appropriate measures to keep automotive electronics unharmed after a reverse polarity event.
Diotec offers a wide range of AEC-Q101 qualified parts to avoid negative current flow. Our Application Note describes three of the most common solutions for reverse polarity protection, including benefits and drawbacks as well as recommended components.
To view specs, inventory availability, pricing and delivery, please click on desired part number.
| DIOTEC Model Number | Type of Rectifier Diode | Type | Package Type |
Repetitive Peak Reverse Voltage VRRM [V] |
Forward Voltage VF [V] |
Forward Voltage IF [A] |
Leakage Current IR [µA] |
Leakage Current VR [V] |
Maximum Average Forward Rectified Current IFAV [A] |
Peak Forward Surge Current IFSM [A] |
Junction Capacitance Cj [pF] |
Junction Capacitance VR [V] |
| SL1D-AQ | Standard Recovery Rectifier Diode | SMD | SOD-123FL | 200 | 1.10 | 1.00 | 1.000 | 200 | 1.00 | 27.00 | 4 | 4 |
| S2B-AQ | Standard Recovery Rectifier Diode | SMD | DO-214AA/SMB | 100 | 1.15 | 2.00 | 5.000 | 100 | 2.00 | 50.00 | ||
| S3G-AQ | Standard Recovery Rectifier Diode | SMD | DO-214AB/SMC | 400 | 1.00 | 3.00 | 5.000 | 400 | 3.00 | 100.00 | ||
| S1G-AQ | Standard Recovery Rectifier Diode | SMD | DO-214AC/SMA | 400 | 1.10 | 1.00 | 5.000 | 400 | 1.00 | 30.00 | ||
|
|
| DIOTEC Model Number | Type of Diode | Type | Package Type |
Forward Voltage VF [V] |
Forward Voltage IF [A] |
Repetitive Peak Reverse Voltage VRRM [V] |
Maximum Average Forward Rectified Current IFAV [A] |
Peak Forward Surge Current IFSM [A] |
Leakage Current IR [µA] |
Leakage Current VR [V] |
Junction Capacitance Cj [pF] | Junction Capacitance VR [V] |
| SK115-AQ | Schottky Diode | SMD | DO-214AC/SMA | 0.85 | 1.00 | 150 | 1.00 | 30.00 | 200.000 | 150 | 20 | 4 |
| SKL14-AQ | Schottky Diode | SMD | SOD-123FL | 0.55 | 1.00 | 40 | 1.00 | 22.00 | 200.000 | 40 | ||
| SKL110-AQ | Schottky Diode | SMD | SOD-123FL | 0.85 | 1.00 | 100 | 1.00 | 22.00 | 200.000 | 100 | ||
| SK36SMB-AQ | Schottky Diode | SMD | DO-214AA/SMB | 0.70 | 3.00 | 60 | 3.00 | 80.00 | 200.000 | 60 | ||
| SK56-AQ | Schottky Diode | SMD | DO-214AA/SMB | 0.68 | 5.00 | 60 | 5.00 | 100.00 | 200.000 | 60 | 300 | 4 |
| SK84-AQ | Schottky Diode | SMD | DO-214AB/SMC | 0.55 | 8.00 | 40 | 8.00 | 140.00 | 200.000 | 40 | 400 | 4 |
| SK34SMA-3G-AQ | Schottky Diode | SMD | DO-214AC/SMA | 0.50 | 3.00 | 40 | 3.00 | 80.00 | 50.000 | 40 | 90 | 4 |
| SKL110-AQ | Schottky Diode | SMD | SOD-123FL | 0.85 | 1.00 | 100 | 1.00 | 22.00 | 200.000 | 100 | ||
| SK110-AQ | Schottky Diode | SMD | DO-214AC/SMA | 0.85 | 1.00 | 100 | 1.00 | 30.00 | 500.000 | 100 |
|
| DIOTEC Model Number | Type of Transistor | Type | Package Type |
Drain Source Voltage VDS [V] |
Threshold Voltage VGSth [V] |
Drain Current ID [A] |
Peak Drain Current IDM [A] |
On-Resistance RDSon [Ω] |
On-Resistance ID [A] |
On-Resistance VGS [V] |
Polarity pol [] |
Power Dissipation Ptot [W] |
Turn-On Time ton [ns] |
Turn-Off Time toff [ns] |
| DI010N03PW-AQ | MOSFETs (Field Effect Transistors) | SMD | PowerQFN 2x2 | 30 | 1.7 | 10.000 | 50.000 | 0.0120 | 10 | 10 | N | 1.400 | 88 | 38 |
| DI040N03PT-AQ | MOSFETs (Field Effect Transistors) | SMD | PowerQFN 3x3 | 30 | 1.7 | 40.000 | 120.000 | 0.0060 | 15 | 10 | N | 25.000 | 84 | 34 |
| DI045N03PT-AQ | MOSFETs (Field Effect Transistors) | SMD | PowerQFN 3x3 | 30 | 1.7 | 45.000 | 280.000 | 0.0034 | 24 | 10 | N | 16.000 | 72 | 26 |
| DI050N04PT-AQ | MOSFETs (Field Effect Transistors) | SMD | PowerQFN 3x3 | 40 | 1.7 | 50.000 | 140.000 | 0.0065 | 10 | 10 | N | 37.000 | 24 | 81 |
| DI028P03PT | MOSFETs (Field Effect Transistors) | SMD | PowerQFN 3x3 | -30 | -1.7 | -28.000 | -80.000 | 0.0067 | -20 | -10 | P | 40.000 | 20 | 36 |
| DI110N04PQ-AQ | MOSFETs (Field Effect Transistors) | SMD | PowerQFN 5x6 | 40 | 1.7 | 110.000 | 400.000 | 0.0019 | 25 | 10 | N | 42.000 | 0 | 0 |
| DI068N03PQ-AQ | MOSFETs (Field Effect Transistors) | SMD | PowerQFN 5x6 | 30 | 1.6 | 68.000 | 210.000 | 0.0030 | 20 | 10 | N | 25.000 | 60 | 30 |