BJTs
Bipolar Junction Transistors (BJTs) are current-controlled devices used for signal amplification, switching, and voltage regulation in analog circuits, audio amplifiers, and legacy digital logic. Available in NPN and PNP configurations from Nexperia, onsemi, Vishay, Diodes Incorporated, and STMicroelectronics with parametric selection by collector-emitter voltage (VCEO), collector current (IC), gain (hFE), transition frequency (fT), and package.
Product Series & Base Models
481 model families directly associated with BJTs. Browse the full catalog with search and filters.
Browse BJTs Products
| PART NUMBER | MANUFACTURER | DESCRIPTION | STOCK | QTY / ACTION |
|---|---|---|---|---|
| NJD2873T4G | onsemi | 50V 2A NPN BJT Transistor, DPAK, 65MHz | 117 | |
| NJD1718T4G | onsemi | 2.0 A, 50 V PNP Power Transistor, DPAK (SINGLE GAUGE) TO-252, 2500-REEL | 95 | |
| NGTB75N65FL2WG | onsemi | Trans IGBT Chip N-CH 650V 100A 595000mW 3-Pin(3+Tab) TO-247 Tube | 3,000 | |
| NGTB50N120FL2WG | onsemi | IGBT, 1200V 50A FS2 Solar/UPS, TO-247, 30-TUBE | 29 | |
| NGTB40N120FL3WG | onsemi | IGBT, Ultra Field Stop -1200V 40A, 30-TUBE | 673 | |
| NGTB40N120FL2WG | onsemi | Trans IGBT Chip N-CH 1200V 80A 652000mW 3-Pin(3+Tab) TO-247 Tube | 75 | |
| NGTB35N65FL2WG | onsemi | IGBT, 650V 35A FS2 Solar/UPS, 30-TUBE | 600 | |
| NGTB25N120FL3WG | onsemi | Trans IGBT Chip N-CH 1200V 100A 349000mW 3-Pin(3+Tab) TO-247 Tube | 1,774 | |
| NGTB25N120FL2WG | onsemi | Trans IGBT Chip N-CH 1200V 50A 385000mW 3-Pin(3+Tab) TO-247 Tube | 900 | |
| NGTB20N135IHRWG | onsemi | IGBT, 1350V 20A FS2-RC Induction Heating, TO-247, 30-TUBE | 1,800 |
How to Choose BJTs
A practical selection framework for BJTs covering specifications, packaging, lifecycle, and sourcing on Octatronics.
Define electrical and environmental requirements
Start with the required function and operating conditions for BJTs, then lock in critical parameters such as breakover voltage, on-state current, gate trigger current, holding current, and dv/dt capability. Match these against datasheet limits, not catalog summaries alone.
Validate package and land pattern compatibility
Confirm the BJTs package matches your PCB footprint, pick-and-place constraints, and moisture sensitivity handling. Verify reel/tape or tube packaging for production.
Check lifecycle, compliance, and alternates
Review lifecycle status (Active, NRND, EOL), RoHS, and approved alternate sources for BJTs before committing to high-volume builds. Use Octatronics cross-reference data when a drop-in replacement is needed.
Compare manufacturers and request pricing
Filter BJTs by manufacturers such as onsemi and ROHM, compare key specs side by side, then submit an RFQ with quantity, target delivery, and traceability requirements.
Related Selection Resources
Top BJTs Manufacturers
onsemi
onsemi BJTs products are available for part-number review, stock checks, and RFQ support.
28,226 productsROHM
ROHM BJTs products are available for part-number review, stock checks, and RFQ support.
3,980 productsTDK
TDK BJTs products are available for part-number review, stock checks, and RFQ support.
2,367 productsVishay
Vishay BJTs products are available for part-number review, stock checks, and RFQ support.
9,347 products
Nexperia
Nexperia BJTs products are available for part-number review, stock checks, and RFQ support.
3,317 productsPanjit
Panjit BJTs products are available for part-number review, stock checks, and RFQ support.
687 products
Infineon Technologies
Infineon Technologies BJTs products are available for part-number review, stock checks, and RFQ support.
20,310 products
NXP Semiconductors
NXP Semiconductors BJTs products are available for part-number review, stock checks, and RFQ support.
20,288 products
Microchip Technology
Microchip Technology BJTs products are available for part-number review, stock checks, and RFQ support.
67,462 products
Texas Instruments
Texas Instruments BJTs products are available for part-number review, stock checks, and RFQ support.
84,045 productsAbout BJTs
Frequently Asked Questions
Octatronics can help source a wide range of BJTs 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.