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Vishay alternative & cross-reference

TVS / ESD / diodes / transistors → AMSEMI · MOSFET → Magnachip & CR Micro

Vishay spans both halves of the problem. Its protection and small-signal lines — TVS, ESD, rectifiers, Schottky, zener, bipolar transistors — are industry-standard series, so the AMSEMI counterpart carries the same series name and the same package. Its MOSFET lines are switching devices, so those go to Magnachip or CR Micro and get checked on your operating conditions.

The rule we do not break

Same package, or no quote. A replacement has to fit the pad that is already on your board. That means SMBJ is replaced by SMBJ in SMB, SMCJ by SMCJ in SMC, and P6KE by P6KE in DO-15. We will not offer you a 5000 W SMC part for a 600 W SMB footprint and call it a drop-in — that is a board respin, not a replacement. If we do not build the part in your package, we say so.

How each part of your Vishay BOM is routed

What you are replacing	What we offer
TVS (SMAJ, SMBJ, SMCJ, SMDJ, 5.0SMDJ, SMF, P4KE, P6KE, 1.5KE)	AMSEMI, same package
ESD protection	AMSEMI, same package
Rectifiers, Schottky, fast / ultra-fast recovery	AMSEMI, same package
Zener diodes	AMSEMI, same package
Bipolar transistors	AMSEMI, same package
MOSFET	Magnachip or CR Micro — quoted, not tabulated
Foil resistors, tantalum capacitors, optocouplers	Not our line

TVS: same series name, therefore same package

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	P_PK (10/1000 µs)	V_RWM	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.

Diodes, transistors and ESD: same package families

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

Power devices: power replaced by power

A MOSFET, IGBT or SiC position is not a table lookup. These are switching devices: the replacement has to hold up on your gate drive, your switching frequency and your thermal path. So we do not publish a parameter-level cross-reference here — you get a candidate and a list of the differences.

What we hold in stock today (examples, not a limit):

Part	Brand	Class	Package
CRG50T60AK3HD	CR Micro	IGBT 600 V	TO-247
CRG40T120AK3S	CR Micro	IGBT 1200 V	TO-247
CRTS029N06N	CR Micro	MOSFET 60 V	TO-263 (D2PAK)
CRSQ027N10N	CR Micro	MOSFET 100 V	TO-247
MMHS70R1K6QURH	Magnachip	MOSFET 700 V	SOT-223

What to send with the part number: V_DS / V_CES margin, R_DS(on) or V_CE(sat) limit, gate drive voltage, switching frequency, the thermal path, and whether the position sees repetitive clamping or avalanche. With those we answer yes or no in one round. We do not substitute a small-signal part for a power device, and we do not substitute a discrete for a module.

Questions engineers actually ask

Is a TPSMB a direct cross to an SMBJ?

Same package (SMB), different series intent — TPSMB is a Vishay automotive series. The pad is the same; the grade is not. AMSEMI parts from our stock are industrial grade, and automotive versions are built to order with the -H suffix, typically 8–10 weeks.

Can you replace a Vishay MOSFET?

We quote Magnachip or CR Micro. We will not hand you a table claiming electrical equivalence, because RDS(on), gate charge and body-diode recovery all move together and have to be checked on your board.

Your pages list AEC-Q101 capability. Does that mean the part I buy is automotive?

No. The AMSEMI factory holds AEC-Q101 qualification; the parts we stock are industrial grade. Automotive parts are ordered with the -H suffix and built to order. We never describe a stocked part as automotive grade.

Do you hold Vishay-equivalent zener diodes?

Yes, in SMA and SMB (SMA-series and SMB-series zeners), plus SOD-123FL and SOD-323 small-signal types. Voltage coverage runs the standard E24 range; send the number and we confirm the exact band.

Can you cross a Vishay part that has no industry-standard series name?

Sometimes, by parameter rather than by name — VRRM, IO, VF, package. Those we quote after checking, and we do not claim a drop-in unless the package and the ratings both line up.

Do you supply parts that are not on your site?

Yes. Send the part number and we confirm supply, price and lead time.

Send the Vishay part number and get a real answer

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.

Upload a BOM Email cs@intek.vip Try the cross-reference tool

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