Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
P4SMA56A
NextGen Components
TVS Diode 400W 56V UNI SMA
300508 Pcs New Original In Stock
77V Clamp Ipp Tvs Diode Surface Mount DO-214AC, SMA
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (509 Ratings)
P4SMA56A
Product Overview
2052692
DiGi Electronics Part Number
P4SMA56A-DGManufacturer
NextGen Components
P4SMA56A
Description
TVS Diode 400W 56V UNI SMAInventory
300508 Pcs New Original In Stock
77V 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
P4SMA56A Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
-
Series
SMA
Product Status
Active
Type
Zener
Unidirectional Channels
1
Voltage - Reverse Standoff (Typ)
47.8V
Voltage - Breakdown (Min)
53.2V
Voltage - Clamping (Max) @ Ipp
77V
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
P4SMA56A-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-P4SMA56ATR
Standard Package
5,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Nous apprécions leur engagement à proposer des solutions économiques pour les startups.
Dec 02, 2025
Die Webseite ist perfekt für schnelle Einkäufe, da alles übersichtlich und minimalistisch gestaltet ist.
Dec 02, 2025
Every interaction with DiGi's support team is positive and solution-oriented.
Dec 02, 2025
I commend their efforts to keep products affordable and packaging eco-conscious.
Dec 02, 2025
Fast shipping turned my shopping experience into a delight—got my order in record time.
Dec 02, 2025
Delivery times are rapid, and their support team is highly effective.
Dec 02, 2025
Their prompt delivery helps maintain my business workflow smoothly.
Dec 02, 2025
The build quality is superb, demonstrating the company's commitment to excellence.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
Can the P4SMA56A be used for automotive load dump protection in 48V systems, and what are the key design risks to evaluate?
The P4SMA56A can be considered for transient suppression in 48V automotive systems, but caution is required for load dump events, which can exceed 120V and last hundreds of milliseconds. The P4SMA56A has a maximum clamping voltage of 77V at Ipp and a 400W peak pulse rating, making it unsuitable for sustained load dump energy. Use it only for minor transients or in conjunction with a robust protection circuit like a hybrid TVS-MOV setup. Always verify system-level transient profiles and consider series current limiting to avoid thermal runaway. For full load dump compliance, consider higher-power alternatives like the SM8S56A or SMAJ56A.
How does the P4SMA56A compare to the SMAJ56A in high-temperature surge applications, and is derating necessary above 85°C?
While both the P4SMA56A and SMAJ56A clamp at 77V with similar standoff voltages, the SMAJ56A offers a 400W vs. 400W peak pulse but typically better surge current handling due to package thermal design. The P4SMA56A, in a DO-214AC (SMA) package, requires significant power derating above 85°C ambient due to thermal resistance limitations. At 125°C ambient, derate pulse power by at least 50% to avoid junction temperature exceeding 150°C. Use thermal vias and copper pads per manufacturer guidelines to improve heatsinking and reliability in high-temp environments.
What are the risks of replacing a P6KE56A with the P4SMA56A in an existing through-hole design, and how does package size impact surge robustness?
Replacing a P6KE56A (DO-15, 600W) with the P4SMA56A (SMA, 400W) risks inadequate transient protection due to lower surge capacity and less thermal mass. The surface-mount SMA package of the P4SMA56A dissipates heat less efficiently than the axial P6KE56A, especially during repetitive surges. If redesigning for SMT, verify IEC 61000-4-5 surge performance and ensure PCB layout includes adequate copper area for thermal relief. Consider upgrading to a 600W SMD part like the SMA6J56A if surge robustness is critical.
Can the P4SMA56A reliably protect sensitive 5V logic circuits downstream when used on a 48V rail, and what isolation methods are recommended?
The P4SMA56A is not suitable for direct protection of 5V logic when placed on a 48V rail, as its 77V clamping voltage would destroy downstream components. Use the P4SMA56A only to suppress overvoltage transients on the 48V line itself, not for voltage regulation or low-side protection. For 5V logic protection, pair it with a dedicated low-voltage TVS (e.g., P6SMB5.0A) and ensure galvanic isolation via optocouplers or dedicated supervisor ICs. Always use series resistors or current-limiting devices to prevent coupling of clamped transients into low-voltage domains.
What are the PCB layout best practices to maximize the surge performance and longevity of the P4SMA56A in industrial control applications?
To maximize surge performance, design the PCB layout for the P4SMA56A with short, wide traces (<1 cm) from the transient entry point to the TVS and directly to ground, minimizing inductance. Use at least two 10-mil thermal vias under the pad connected to a ground plane to enhance heat dissipation. Route high-energy signals away from sensitive components, and place the P4SMA56A as close as possible to connectors or switches where transients are likely to enter. Verify layout with IPC-2152 current-carrying standards and simulate transient propagation if used in high-noise environments like motor controls.
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.
P4SMA56A CAD Models
NextGen Components P4SMA56A PCB symbols & footprints
productDetail
