An automotive program does not buy a diode; it buys a part with qualification evidence, a mission-profile fit and a traceable supply chain. Good-Ark’s automotive discrete portfolio spans rectifiers, Schottky diodes, TVS and protection parts, MOSFETs and wide-bandgap devices organized by function, so a design team can start from the electrical role and find the qualified series. This page maps the portfolio by function and explains what the automotive qualification evidence means before a part enters the program.
How the automotive portfolio is organized
The portfolio is organized by electrical function — rectification, Schottky conduction, transient protection, switching and wide-bandgap power — with each series carrying the qualification documentation the automotive program requires for the parts that are released for that use.
An automotive electrical system needs different devices in different positions: rectifiers and Schottky diodes in power conversion and ORing, TVS and ESD parts at the input and on buses, MOSFETs in load switching and motor drives, and SiC or IGBT devices in traction and high-voltage stages. Good-Ark’s catalog groups the devices by function so the search starts from the role, and the qualification evidence — AEC-Q101-type stress data where it applies, reliability reports and quality documentation — is verified for the specific part number. The portfolio is the map; the datasheet and the quality documents are the contract.
Rectifiers and Schottky diodes in the power path
Automotive rectifiers and Schottky diodes serve the power path — alternator and converter rectification, ORing and reverse-protection positions — where the choice between PN and Schottky follows the voltage, temperature and frequency of the application.
The portfolio includes general rectifiers for line-frequency and rugged positions and Schottky families for low-voltage, high-frequency conduction, with automotive parts appearing in the packages the assembly line uses. A Schottky’s low forward drop suits ORing and output rectification; a PN rectifier’s low leakage and high blocking suit hot, high-voltage positions. The qualification evidence follows the part: an automotive release includes the stress and reliability data that support the mission profile, and the temperature range matches the module’s environment. The buyer should verify that the specific series and package carry the required documentation rather than assume a family is automotive because one member is.
TVS, ESD and protection at the input and on the buses
TVS and ESD parts protect the input and the communication buses: a TVS window clamps load dump and surge events at the module input, and low-capacitance ESD parts protect the CAN, LIN and other data lines from electrostatic events.
The protection portfolio covers both ends of the automotive electrical system. Input protection uses TVS families sized from the vehicle’s pulse set — load dump and the ISO-defined transients — with the stand-off, breakdown and clamping window fitted to the module’s rail and converter. Bus protection uses ESD and TVS parts whose capacitance fits the data rate and whose stand-off fits the bus voltage. The same function can appear with different qualification and marking; the program documentation decides which release is acceptable. The protection parts are selected from the module’s actual test requirements, not from a generic automotive label.
MOSFETs and wide-bandgap devices in switching roles
Automotive MOSFETs serve load switching, motor drives and power conversion, and wide-bandgap devices appear in the higher-voltage, higher-frequency stages where their switching loss and temperature capability justify the cost.
The switching portfolio is chosen by the electrical role: a low-side load switch needs a different device from an inverter stage or a high-voltage DC-DC converter. MOSFETs cover the 12 V and 48 V load-switching and drive positions, and SiC or IGBT devices cover the high-voltage traction and charging stages. The gate-drive requirements, the thermal mission and the qualification evidence follow the specific part. The automotive release includes the mission-profile data that supports the application — temperature range, power cycling and the relevant stress tests — and the design review should confirm the part’s documentation matches the program’s expectations.
What AEC-Q101-type qualification means in practice
Qualification under the automotive discrete standard means the part has passed the defined stress and reliability tests and carries the documentation that supports its automotive use; it is evidence of suitability, not a promise of performance in every application.
The qualification tests stress the part for temperature, humidity, electrical and mechanical events, and the resulting report documents the samples, conditions and results. For a design team, the qualification evidence answers three questions: does the part survive the mission profile’s temperature and stress, is the reliability data current, and does the quality system support traceability for the program. The evidence is part-specific: a qualified family does not automatically qualify every member unless the documentation says so. The buyer should request the qualification report for the exact part number and confirm it covers the program’s requirements before design-in.
Moving from the portfolio to an automotive part number
Move from the portfolio to an automotive part number by defining the electrical function, the mission profile and the program’s documentation needs, then selecting the series and confirming the qualification evidence on the datasheet and quality documents.
The portfolio groups devices by function so the first filter is the electrical role: rectification, protection, switching or wide-bandgap power. The second filter is the mission profile — voltage, temperature, current and the program’s reliability expectations. The third is the documentation: the qualification report, the temperature range and the traceability that the program requires. The part number is confirmed when the datasheet’s electrical window fits the application and the quality documents match the program’s needs. For samples, datasheets or a quote on a specific automotive series, the sample and quote guide explains the request path.
| Automotive function | Device family | Key qualification question |
|---|---|---|
| Rectification / ORing | Rectifiers, Schottky | Temperature and current mission fit |
| Input and bus protection | TVS, ESD | Pulse set and capacitance fit |
| Load switching and drives | MOSFETs | Gate drive and thermal mission |
| High-voltage power | SiC, IGBT | Mission profile and qualification data |
Series map and next steps
An example makes the function-first path concrete: a body controller needs input protection for a 12 V rail with load dump, reverse-polarity protection for the battery connection, and low-capacitance ESD for a LIN bus. Each role points to a different portfolio family — the TVS input clamp from the protection grouping, a series diode or MOSFET-based reverse element from the power-path grouping, and an ESD part sized for the LIN data rate — and each part carries its own qualification evidence. Starting from the electrical role keeps the search inside the right family instead of hunting through the whole catalog by part-number prefix.
The Good-Ark automotive portfolio is organized by function so a design team can start from the electrical role and find the qualified series, with the qualification evidence verified per part number.
Define the function, the mission profile and the documentation needs, select the series, and confirm the part’s electrical window and qualification data before design-in. The portfolio is the map; the datasheet and the quality documents are the contract, and the quality management page is where the documentation path begins.
Browse the functional categories in the product center; if you share the electrical function, the mission profile and the program’s documentation requirements, the engineering team can point you to the automotive series that fits.