Discrete Semiconductors
Discrete semiconductors are individual active components — diodes, transistors, MOSFETs, IGBTs, thyristors, and rectifiers — that perform switching, rectification, amplification, and voltage regulation in virtually every power and signal circuit. Octatronics indexes tens of thousands of discrete devices from Vishay, Nexperia, onsemi, Infineon, ROHM, Toshiba, and Diodes Incorporated with parametric search, package filtering, and RFQ support.
Explore Discrete Semiconductors Subcategories
Browse Discrete Semiconductors Products
| PART NUMBER | MANUFACTURER | DESCRIPTION | STOCK | QTY / ACTION |
|---|---|---|---|---|
| BD441 | onsemi | TRANS NPN 80V 4A TO126 | 150 | |
| BD439G | onsemi | Medium Power NPN Bipolar Power Transistor, TO-225, 500-BLKBX | 105,000 | |
| BD437G | onsemi | NPN BJT 45V 4A 36W TO-225 Power Transistor | 2 | |
| BD244CG | onsemi | PNP BJT 100V 6A TO-220 Power Transistor | 1,700 | |
| BD243CG | onsemi | 6A 100V NPN BJT Power Transistor TO-220 | 68 | |
| BD242CG | onsemi | PNP BJT, 100V, 3A, TO-220 Power Transistor | 78,300 | |
| BD241CG | onsemi | 3.0 A, 100 V, 40 W NPN Bipolar Power Transistor, TO-220 3 LEAD STANDARD, 50-TUBE | 71,100 | |
| BD238G | onsemi | Power 2A 80V PNP 25W, TO-225, 500-BLKBX | 175 | |
| BD237G | onsemi | 80V 2A NPN BJT Power Transistor TO-225 25W | 81,000 | |
| BD234 | onsemi | TRANS PNP 45V 2A TO126 | 95 |
Top Discrete Semiconductors Manufacturers
onsemi
onsemi Discrete Semiconductors products are available for part-number review, stock checks, and RFQ support.
28,226 productsROHM
ROHM Discrete Semiconductors products are available for part-number review, stock checks, and RFQ support.
3,980 productsTDK
TDK Discrete Semiconductors products are available for part-number review, stock checks, and RFQ support.
2,367 productsMolex
Molex Discrete Semiconductors products are available for part-number review, stock checks, and RFQ support.
1,034 productsVishay
Vishay Discrete Semiconductors products are available for part-number review, stock checks, and RFQ support.
9,347 products
Nexperia
Nexperia Discrete Semiconductors products are available for part-number review, stock checks, and RFQ support.
3,317 productsPanjit
Panjit Discrete Semiconductors products are available for part-number review, stock checks, and RFQ support.
687 productsMSKSemi Semiconductors
MSKSemi Semiconductors Discrete Semiconductors products are available for part-number review, stock checks, and RFQ support.
1 productsRenesas
Renesas Discrete Semiconductors products are available for part-number review, stock checks, and RFQ support.
74,605 productsSkyworks Solutions
Skyworks Solutions Discrete Semiconductors products are available for part-number review, stock checks, and RFQ support.
32 productsAbout Discrete Semiconductors
Unlike integrated circuits that combine multiple functions on one die, discrete semiconductors perform a single electrical function per device — making them fundamental building blocks that engineers combine to create custom power stages, protection circuits, signal switches, and amplifier topologies tailored to specific system requirements.
This category encompasses Diodes (Schottky, Zener, TVS, rectifier, and switching), Transistors (BJTs, MOSFETs, JFETs, IGBTs), and Thyristors (SCRs, TRIACs, DIACs). Discrete devices are selected based on voltage and current ratings, switching speed, on-resistance (RDS(on)), forward voltage drop, thermal characteristics, and package footprint.
On Octatronics, filter discrete semiconductors by device type, polarity, voltage/current class, package (SOT-23, TO-220, D2PAK, QFN), and automotive AEC-Q101 qualification. Compare parametric data across manufacturers and submit RFQs for prototyping or production volumes.
Frequently Asked Questions
Octatronics can help source a wide range of Discrete Semiconductors from major manufacturers worldwide, including active production parts, long-lead-time items, and hard-to-find components.
Yes. You can submit a single part number or upload a BOM with multiple parts. Our team will check stock, date code, lead time, and pricing for each item.
Availability depends on the specific part number and supplier source. For important orders, buyers can request packaging photos, labels, date code information, and traceability documents.
Yes. Octatronics supports sourcing for active, end-of-life, obsolete, and hard-to-find components through our global supplier network.
Please provide the part number, manufacturer, quantity, required date code, target price, delivery country, and whether original packaging or COC is required.
Articles & Technology
View All →
PNP vs NPN vs P-Channel MOSFET: How to Choose the Right Transistor for Switching Circuits
PNP, NPN, and MOSFET transistors are widely used for electronic switching and control applications, but each device has different operating principles and performance characteristics. This guide explains the key differences between PNP vs NPN vs MOSFET, including switching behavior, efficiency, applications, and how engineers select the right transistor for different circuit designs.
MOSFET vs BJT: Key Differences, Working Principles, and Engineering Selection Guide
MOSFET and BJT are two fundamental transistor technologies used in electronic circuits. This guide explains the key differences between MOSFET vs BJT, including control methods, switching speed, efficiency, thermal behavior, and real-world applications. Learn how engineers select the right transistor for different circuit designs.