NXP's discrete business became Nexperia in 2017, so most NXP-branded diode, TVS, ESD and transistor numbers on an older BOM are Nexperia-heritage parts — and those keep the industry-standard series names. That is what makes them replaceable: an SMBJ is SMB whoever prints the label. AMSEMI builds the same series in the same package, so the pad does not move.
| What you are replacing | What we offer |
|---|---|
| TVS (SMAJ, SMBJ, SMCJ, SMDJ, 5.0SMDJ, P4KE, P6KE, 1.5KE) | AMSEMI, same package |
| ESD protection | AMSEMI, same package |
| Rectifiers, Schottky, recovery diodes | AMSEMI, same package |
| Zener diodes | AMSEMI, same package |
| Bipolar transistors and small-signal MOSFETs | AMSEMI, same package |
| LPC / i.MX / Kinetis MCUs, interface and logic | Not our line — GD32 is not an LPC drop-in |
These series names are industry-standard — onsemi, Littelfuse, Vishay, NXP and AMSEMI all build SMAJ in SMA and SMBJ in SMB. Same name means same pad. Peak power and stand-off range are AMSEMI figures from AMSEMI datasheets.
| Series | Package | PPK (10/1000 µs) | VRWM | Availability |
|---|---|---|---|---|
| SMF | SOD-123FL | 200 W | 5–440 V | 12 bands in stock |
| P4SMF | SOD-123FL | 400 W | 6.8–250 V | Made to order |
| SMAJ | SMA | 400 W | 5–440 V | 14 bands in stock |
| SMBJ | SMB | 600 W | 5–440 V | 15 bands in stock |
| SMCJ | SMC | 1500 W | 5–440 V | 4 bands in stock |
| 1.5SMC | SMC | 1500 W | 5.8–495 V | 1 band in stock |
| SMDJ | SMC | 3000 W | 5–170 V | 13 bands in stock |
| 5.0SMDJ | SMC | 5000 W | 12–170 V | 15 bands in stock |
| 8.0SMDJ | SMC | 8000 W | 48–90 V | 3 bands in stock |
| P4KE | DO-41 | 400 W | 5.8–342 V | Made to order |
| P6KE | DO-15 | 600 W | 5.8–342 V | Made to order |
| 1.5KE | DO-201 | 1500 W | 5.8–342 V | 3 bands in stock |
| 5KP | P600 | 5000 W | — | Made to order |
Stock figures are a snapshot taken 2026-09-18 and are confirmed on the quote. Bands not held are factory orders, typically 8–10 weeks.
| AMSEMI series | Function | Packages |
|---|---|---|
| GS | Rectifier, general purpose | SMA · SMB · SMC |
| GP | Rectifier, general purpose | DO-41 |
| RL | Rectifier, general purpose | DO-15 |
| P | Rectifier, general purpose | P600 |
| SS | Schottky | SMA · SMB · SMC |
| SR | Schottky | DO-41 · DO-15 · DO-27 |
| MBR | Schottky | TO-220AB · TO-220AC |
| GR | Fast recovery | SMA · SMB · SMC |
| FR | Fast recovery | DO-41 · DO-15 · DO-27 · P600 |
| F | Fast recovery | SOD-123 |
| ES | Ultra-fast recovery | SMA · SMB · SMC |
| SF | Ultra-fast recovery | DO-41 · DO-15 · DO-27 |
| MUR | Ultra-fast recovery | TO-220AB |
| SMA / SMB / SZ | Zener | SMA · SMB |
| ESD / GESD | ESD protection | SOD-323 · SOD-523 · SOT-23 · SOT-26 · DFN1006 · DFN0603 |
| BC / MMBT / S / FMMT | Bipolar transistor | SOT-23 · SOT-323 · SOT-363 |
| AM / AMZ / AMU / BSS | Small-signal MOSFET | SOT-23 · SOT-523 · SOT-363 |
Most likely. NXP spun its discrete, logic and MOSFET business into Nexperia in 2017. The series names carried over, which is why those part numbers cross cleanly on series and package.
No. GD32 is our STM32 alternative — it is not pin or software compatible with LPC or i.MX. We would rather lose the order than have your firmware not boot on the second prototype.
SMA, SMB, SMC, SOD-123FL, SOD-323, SOD-523, SOT-23, SOT-26, SOT-323, SOT-363, DFN1006 and DFN0603. If your NXP part sits in a package outside that list, ask before assuming.
By series and package first — that is the reliable path. Where the number has no standard series name, we cross on VRRM, IO, VF, VC and package, and we say it is a parameter match rather than a drop-in.
Stocked bands ship in 1–3 days. Non-stocked voltages and automotive grades are made to order, typically 8–10 weeks.
Yes. Send the part number and we confirm supply, price and lead time.
Upload your BOM or type the number — we reply within one business day with the equivalent, the price, the package and the lead time. If we cannot supply it, or the package does not match, we say so.
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