Made to order · IND AEC-Q101 · to order AMSEMI DO-214AB (SMC)

5.0SMDJ30CA-N

Q: What is the clamping voltage of 5.0SMDJ30CA-N?

38.7 V at Ipp = 103.0A on a 10/1000 µs waveform. Standoff is 30 V and the breakdown window is 33.3–36.8V.

5000 W bi-directional foldback (snap-back) TVS in DO-214AB. Snap-back clamping pulls residual voltage far below a standard suppressor of the same standoff, so the downstream MOS rating can stay where it is.

Standoff V_RWM

30V

Max continuous DC

Clamping V_C

38.7V

@ I_pp 103.0A

Peak power P_pp

5000W

10/1000 µs, non-repetitive

QCan 5.0SMDJ30CA-N replace 5.0SMDJ30CA without changing the PCB?

Yes. 5.0SMDJ30CA-N and 5.0SMDJ30CA are the same footprint — DO-214AB (SMC), same land pattern, same reel — so the swap is a BOM change only. Standoff voltage is identical at 30 V and the breakdown window is the same, but the clamping voltage drops from 48.4 V to 38.7 V (20.0% lower) at the same 103.0A pulse current, which is what lets the downstream MOS rating stay where it is. Both are supplied by Shenzhen Intek Technology from the AMSEMI line.

Full specification as published by Anhui Amsemi Semiconductor

Standoff voltageV_RWM	30 V Maximum continuous DC or peak operating voltage
Breakdown voltageV_BR	33.3–36.8V Measured at I_T = 1 mA
Max clamping voltageV_C	38.7 V At I_pp = 103.0A, 10/1000 µs
Peak pulse powerP_pp	5000W (10/1000µs, non-repetitive)
Package	DO-214AB (SMC) DO-214AB is the JEDEC name for SMC
Standard pack	3,000 pcs / reel Factory reel / box quantity — quote in whole multiples
Configuration	Bidirectional (CA) Cathode-to-anode pair in one package
Grade shipped from stock	Industrial See availability panel
Automotive version	Built to order, suffix -H AMSEMI holds AEC-Q101 factory qualification

Same footprint, lower clamp standard vs foldback, same voltage grade

Parameter	5.0SMDJ30CA standard	5.0SMDJ30CA-N foldback	Δ
Standoff voltage V_RWM	30 V	30 V	same
Breakdown window V_BR	33.3–36.8V	33.3–36.8V	same
Max clamping V_C	48.4 V	38.7 V	−9.7 V (20.0%)
Peak pulse current I_pp	103A (10/1000µs)	103.0A	same
Package	SMC	DO-214AB (SMC)	identical

Read the Δ column carefully. The 20.0% is a clamping-voltage reduction, not a power-rating upgrade. Both devices absorb the same 10/1000 µs pulse at the same current — what changes is how much of that energy reaches the MOSFET behind them. If a design already passes with 5.0SMDJ30CA, it passes with 5.0SMDJ30CA-N with more margin; if it fails on clamp, 5.0SMDJ30CA-N is the drop-in fix — no layout change, no requalification of the land pattern.

When to use it and when not to

Good fit

BMS protection boards where the residual clamp is what sets the MOSFET rating
Existing 5.0SMDJ30CA designs that fail a surge test on clamp voltage — swap to 5.0SMDJ30CA-N with no layout change
Retrofit work where the land pattern is fixed and requalification is expensive
Bus voltages up to roughly 33 V with the 30 V standoff grade

Not the right part

Where you need more surge current — go up a power grade (SMDJ → 5.0SMDJ → 8.0SMDJ), not across the -N line
Footprints other than DO-214AB: a smaller package is a board redesign, not a substitution
Signal-line ESD clamping — this is a 5 kW surge device, use an ESD array instead

Questions engineers actually ask

What does the “-N” suffix mean on 5.0SMDJ30CA-N?

It marks the foldback (snap-back) version of the same voltage grade. Electrically it is the same standoff and the same breakdown window, but the clamping characteristic bends back after breakdown, so the residual voltage seen by the protected circuit is lower.

Is 5.0SMDJ30CA-N a drop-in replacement for 5.0SMDJ30CA?

Yes — same DO-214AB footprint, same land pattern, same tape and reel. The only document that changes is the BOM. Ordering 5.0SMDJ30CA-N where you previously ordered 5.0SMDJ30CA does not require a board revision.

What is the clamping voltage of 5.0SMDJ30CA-N?

38.7 V at I_pp = 103.0A on a 10/1000 µs waveform. Standoff is 30 V and the breakdown window is 33.3–36.8V.

Is it automotive grade?

The AMSEMI factory holds AEC-Q101 qualification, and automotive versions are built to order with the suffix -H. Parts shipped from stock are industrial grade. Say which grade you need in the RFQ and both are quoted.

How much is in stock right now?

No shelf stock is listed for this voltage grade — it is built to order. Send the quantity you need and stock or lead time is confirmed within one business day.

Which documents come with it?

RoHS declaration, SGS test report and REACH statement are available on request for AMSEMI parts. The datasheet for this series is provided with the quotation.