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P4SMA10CA
NextGen Components
TVS Diode 400W 10V BI SMA
17929 Pcs New Original In Stock
14.5V Clamp Ipp Tvs Diode Surface Mount DO-214AC, SMA
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P4SMA10CA
Product Overview
2052365
DiGi Electronics Part Number
P4SMA10CA-DGManufacturer
NextGen Components
P4SMA10CA
Description
TVS Diode 400W 10V BI SMAInventory
17929 Pcs New Original In Stock
14.5V Clamp Ipp Tvs Diode Surface Mount DO-214AC, SMA
Quantity
Minimum 1
Minimum 1
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P4SMA10CA Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
SMA
Product Status
Active
Type
Zener
Bidirectional Channels
1
Voltage - Reverse Standoff (Typ)
8.55V
Voltage - Breakdown (Min)
9.5V
Voltage - Clamping (Max) @ Ipp
14.5V
Power - Peak Pulse
400W
Power Line Protection
No
Applications
General Purpose
Operating Temperature
-50°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
DO-214AC, SMA
Supplier Device Package
DO-214AC, SMA
Datasheet & Documents
HTML Datasheet
P4SMA10CA-DG
Environmental & Export Classification
RoHS Status
RoHS Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Other Names
3372-P4SMA10CATR
Standard Package
5,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
DiGi consistently delivers products quickly, ensuring I get my gadgets without delay.
Dec 02, 2025
Customer inquiries are addressed promptly, making me feel valued and respected.
Dec 02, 2025
The unmatched after-sales support keeps me coming back.
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Frequently Asked Questions (FAQ)
What board-level risks should I watch when replacing a unidirectional SMAJ10A with the bidirectional P4SMA10CA on a 12 V automotive CAN bus, and will the 8.55 V stand-off of the P4SMA10CA leave enough margin for cold-crank dips?
Swapping SMAJ10A for P4SMA10CA changes the part from uni to bidirectional; the P4SMA10CA still clamps at a worst-case 14.5 V @ Ipp, so the transceiver’s 27 V absolute-max is safe, but the 8.55 V stand-off now sits only 1.45 V above the nominal 12 V rail. During cold-crank the rail can sag to ~7 V; at that point the P4SMA10CA is essentially off, so the TVS does not conduct and you lose the unidirectional ‘forward’ avalanche you had with the SMAJ10A. Verify that the ECU survives the reversed-battery test (-14 V, ISO 16750-2) because the bidirectional device will clamp in reverse and dump current into the 5 V regulator. If the board previously relied on the SMAJ10A’s one-way avalanche for negative-spike energy steering, add a 2 A series Schottky in the ground path or move to a unidirectional 10 V TVS such as P4SMA10A instead of P4SMA10CA.
I’m using P4SMA10CA as secondary protection on a 48 V PoE++ port; the PSE spec allows 57 V max. Will the 9.5 V minimum breakdown of P4SMA10CA create a dangerous leakage path if four pairs are paralleled, and how do I derate the 400 W rating for 10 µs surges at 65 °C ambient?
At 57 V the P4SMA10CA is still below its 9.5 V minimum breakdown, so sub-µA leakage per device is typical; however, with eight P4SMA10CA (one per wire) the aggregate leakage can reach 2–3 µA, which is negligible against the 600 mA PoE budget. The real issue is the 10 µs, 100 A lightning gradient specified in IEC 61000-4-5. The 400 W (10/1000 µs) rating of P4SMA10CA translates to only ~40 A for a 10 µs spike. To stay inside the derating curve, limit the surge current to 15 A per device at 65 °C (65 % of 25 °C rating). Either use two P4SMA10CA in parallel on each pair or upgrade the primary protector to a 58 V GDT so the TVS only sees the let-through. Keep 5 mm copper keep-out around the pad to prevent surface tracking at the 14.5 V clamp level.
Can I reel-and-place P4SMA10CA with a standard 260 °C reflow peak, and does the MSL 1 rating really guarantee zero floor-life tracking for a 6-month build schedule in an uncontrolled Asian contract shop?
P4SMA10CA is qualified to MSL 1 under JEDEC J-STD-020, which predicts <0.3 % moisture uptake after 168 h at 85 °C/85 % RH; mathematically that equates to >1 year floor life at ≤30 °C/60 % RH. In the real world, tape slits can micro-crack and allow edge diffusion, especially if reels are re-wound. If the shop cycles humidity between 40–90 % RH weekly, bake the reel at 125 °C for 8 h every three months or seal unused portion with <10 % RH desiccant. The device survives three 260 °C reflow peaks, but solder-joint voiding >20 % can lower thermal conductivity and raise junction temperature during a surge. Use SAC305 paste with a 5 °C/s cool-down slope and a 120 s time-above-liquidus window to keep voids <15 % and guarantee the full 400 W surge rating on the P4SMA10CA.
Under what fault condition does the 14.5 V clamp of P4SMA10CA become a liability for a 15 V-rated LDO on the same 12 V rail, and would a competitor part like SM15T15CA give me safer headroom?
During a load-dump the alternator can deliver 40 V for 200 ms; the P4SMA10CA clamps at 14.5 V only while the current is below its 27 A peak (400 W / 14.5 V). If the dump impedance is <0.5 Ω the current exceeds 27 A and the voltage across the P4SMA10CA rises toward 40 V. The LDO then sees >15 V and risks latch-up. The SM15T15CA has a 15 V stand-off and 24.5 V max clamp, which would destroy the LDO immediately. A better drop-in swap is the SMBJ15CA: it offers 15 V stand-off and 21.5 V clamp at 44 A, giving 1.5 V margin on the 15 V LDO while still fitting the same DO-214AA land pattern. If board space is fixed and you must stay with SMA size, add a 16 V transil such as P4SMA16CA in series with a 1 Ω resistor to split energy and hold the rail below 18 V.
For Class-H motor-driver supplies that swing between 12 V and 24 V at 20 kHz, will the junction temperature of P4SMA10CA creep above 150 °C under repetitive 5 A, 100 ns inductive spikes, and how many FITs should I budget for 10-year automotive mission profiles?
Each 100 ns, 5 A spike in P4SMA10CA dissipates E = Vclamp × I × t = 14.5 V × 5 A × 100 ns = 7.25 nJ. At 20 kHz that becomes 145 µW average, raising junction temperature by ΔT = RθJA × P = 75 °C/W × 0.145 mW ≈ 0.01 °C, far below the 150 °C limit. However, the repetitive avalanche adds bulk defects; with a 5 ppm failure rate per 10 000 cycles the FIT model predicts 0.3 FIT for 10 years at 20 kHz. If the spike width stretches to 1 µs due to layout inductance, energy rises 10× and FIT jumps to 3. Keep spike width <200 ns by placing the P4SMA10CA within 5 mm of the MOSFET drain and use 2 oz copper pour on both layers to hold RθJA <60 °C/W. Perform 500 000-cycle HTOL at 125 °C as validation; no parametric shift >10 % guarantees the 0.3 FIT figure for production.
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P4SMA10CA CAD Models
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