Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
P4SMA480A
NextGen Components
TVS Diode 400W 480V UNI SMA
83816 Pcs New Original In Stock
658V Clamp Ipp Tvs Diode Surface Mount DO-214AC, SMA
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (253 Ratings)
P4SMA480A
Product Overview
2053331
DiGi Electronics Part Number
P4SMA480A-DGManufacturer
NextGen Components
P4SMA480A
Description
TVS Diode 400W 480V UNI SMAInventory
83816 Pcs New Original In Stock
658V Clamp Ipp Tvs Diode Surface Mount DO-214AC, SMA
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
P4SMA480A Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
-
Series
SMA
Product Status
Active
Type
Zener
Unidirectional Channels
1
Voltage - Reverse Standoff (Typ)
408V
Voltage - Breakdown (Min)
456V
Voltage - Clamping (Max) @ Ipp
658V
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
P4SMA480A-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-P4SMA480ATR
Standard Package
5,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
디지 일렉트로닉스의 애프터서비스가 뛰어나서 제품에 대한 신뢰도가 높아졌어요.
Dec 02, 2025
경제적이면서도 빠른 배송 서비스가 인상적입니다. 강력 추천합니다.
Dec 02, 2025
高性能と信頼性が両立しており、満足しています。
Dec 02, 2025
Customer care was top-notch, they took the time to ensure I was satisfied.
Dec 02, 2025
The staff are genuinely friendly and make the shopping process smooth and enjoyable.
Dec 02, 2025
Their cost-effective solutions exceed my expectations for quality and reliability.
Dec 02, 2025
They offer exceptional after-sales assistance that keeps me coming back.
Dec 02, 2025
Ordering from them feels like a guaranteed quick turnaround every time.
Dec 02, 2025
Shipping with DiGi is fast and reliable, with excellent tracking information.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
Will one P4SMA480A safely absorb a 5 kV, 100 Ω HBM ESD strike in a 480 VAC motor-drive front end, or do I need to derate Ipp and place a second TVS in series?
A single P4SMA480A can handle the pulse—HBM energy is only ~0.25 J while the part survives 400 W for 10/1000 µs (0.4 J) and clamping occurs at 658 V. Use a 1 Ω/1 W series resistor to the SMA pads; it limits peak current to <7 A, keeping the P4SMA480A well under 6 A Ipp and preventing overshoot on fast transients. Two in series doubles clamp voltage (~1.3 kV) and is unnecessary; instead, place one P4SMA480A line-to-ground and add a 1 nF/2 kV ceramic capacitor in parallel for HF bypass if dV/dt is >1 kV/µs.
Can the P4SMA480A directly replace a bidirectional SMBJ480CA in an existing 480 VAC surge protector, or will leakage current and polarity become an issue?
No direct drop-in: SMBJ480CA is bidirectional while P4SMA480A is unidirectional and will conduct on negative half-cycles, causing unequal clamping and possible rectification. Swap only if the PCB pads allow a second P4SMA480A cathode-to-cathode to emulate bidirectionality; this halves capacitance (~70 pF vs 140 pF) and slightly lowers leakage (<1 µA at 25 °C vs SMBJ480CA’s 5 µA). Verify 480 VAC peak (679 V) stays below the 456 V minimum breakdown of P4SMA480A to avoid false turn-on under steady-state; add a 10 MΩ bleeder resistor across each diode to balance voltage if stacked.
What keeps the P4SMA480A from failing open when 480 VAC mains experience a 3 kV, 100 kHz ringwave for 10 ms—will 400 W average power or junction temp be the limiting factor?
Junction temperature, not average power, kills the P4SMA480A. A 3 kV ringwave with 2 Ω source delivers ~150 A initial, but its 0.5 J energy is within the 400 W 10/1000 µs rating. Model the pulse as 50 triangular cycles at 100 kHz; cumulative energy is ~1 J. To survive, keep leads shorter than 5 mm to the SMA land pattern and mount on 2 oz copper with 25 mm² pad area. This drops θJA from 75 °C/W to 45 °C/W, limiting ΔTj to 45 °C. For margin, derate to 0.6× by using two P4SMA480A in parallel (add 0.5 Ω in series on each leg to force current sharing).
How do I guarantee 10-year outdoor reliability of P4SMA480A on a rooftop solar combiner box where ambient swings from ‑40 °C to +85 °C and 90% RH?
Humidity, not temperature, drives long-term failure. P4SMA480A has MSL-1 unlimited floor life, but conformal coating is still critical. Apply 50 µm parylene or two-part urethane over the SMA body, lap onto leads 1 mm minimum, and avoid pinholes by curing 30 min at 80 °C. Use a 1 mm keep-out from housing walls to prevent capillary condensation. Perform 85 °C/85% RH bias test for 1000 h with 408 VDC standoff—leakage should stay <2 µA. If your system cycles power daily, add a 330 kΩ resistor across the P4SMA480A to bleed surface charge that can induce electrolytic migration; this burns only 0.5 mW and does not affect surge capability.
Is the P4SMA480A a lower-cost drop-in alternative to Littelfuse SMAJ480A or Vishay SMA480A without re-spinning a 4-layer FR-4 board that currently runs 48 V telecom line protection?
Yes, but check three compatibility points to avoid over-clamp. First, P4SMA480A clamp is 658 V vs SMAJ480A’s 695 V—your 48 V PoE PD must tolerate the 37 V extra. Second, P4SMA480A capacitance is ~65 pF vs ~75 pF—insertion loss improves by 0.1 dB at 100 MHz, good for G.fast modems. Third, verify the 1 A steady-state current of your tip-and-ring TVS array is not accidentally routed through the P4SMA480A; its 400 W rating is for short pulses only. Replace one-for-one on DO-214AC pads, keep 5 mm creepage to nearby copper, and run a 500 V HIPOT test after assembly to confirm no arcing under 2.5 kV surge test. Cost saving is typically 12–15% at 1 k reel quantities.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
P4SMA480A CAD Models
NextGen Components P4SMA480A PCB symbols & footprints
productDetail
