Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
P4SMA350A
NextGen Components
TVS Diode 400W 350V UNI SMA
20205 Pcs New Original In Stock
482V Clamp Ipp Tvs Diode Surface Mount DO-214AC, SMA
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (252 Ratings)
P4SMA350A
Product Overview
2052417
DiGi Electronics Part Number
P4SMA350A-DGManufacturer
NextGen Components
P4SMA350A
Description
TVS Diode 400W 350V UNI SMAInventory
20205 Pcs New Original In Stock
482V 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
P4SMA350A Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
-
Series
SMA
Product Status
Active
Type
Zener
Unidirectional Channels
1
Voltage - Reverse Standoff (Typ)
300V
Voltage - Breakdown (Min)
332V
Voltage - Clamping (Max) @ Ipp
482V
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
P4SMA350A-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-P4SMA350ATR
Standard Package
5,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
每次與他們聯繫都感受到很高的效率，售後團隊反應快速，服務態度良好。
Dec 02, 2025
Les produits ont résisté aux chocs lors de leur manipulation, ce qui montre leur construction fiable.
Dec 02, 2025
Their inventory management is impressive, ensuring products are readily available.
Dec 02, 2025
The site’s layout adapts well to my mobile device, enhancing usability.
Dec 02, 2025
Their commitment to transparent pricing makes me trust their brand more each day.
Dec 02, 2025
Their products withstand rough handling and still operate perfectly, proving their excellent build quality.
Dec 02, 2025
I appreciate their focus on packaging quality, which signals respect for the products and customers alike.
Dec 02, 2025
Their clear pricing model minimizes confusion and simplifies accounting.
Dec 02, 2025
Their logistics are well-organized, ensuring quick and safe transportation.
Dec 02, 2025
Their commitment to quality assurance gives me confidence in every purchase.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
What are the key design-in risks when using the P4SMA350A for surge protection in high-temperature industrial environments?
When designing in the P4SMA350A in high-temperature environments near its 150°C max junction rating, thermal buildup from repeated surges can reduce clamping effectiveness and accelerate aging. Ensure adequate PCB copper area for heat dissipation and derate peak pulse power (400W) based on ambient temperature—especially in enclosed or non-ventilated systems. Monitor TJ during transient events and consider adding a thermal relief path to avoid long-term reliability degradation in motor drives or power line-coupled applications.
How does the P4SMA350A compare to the SMAJ350A in terms of clamping performance and field reliability in automotive 12V systems?
The P4SMA350A and SMAJ350A both offer 350V nominal breakdown and similar 482V max clamping voltage, but the P4SMA350A may exhibit tighter batch-to-batch consistency due to NextGen Components' screening process. However, SMAJ350A typically has AEC-Q101 qualification, making it more suitable for automotive use. If using P4SMA350A in automotive 12V systems, verify robustness against load dump pulses (ISO 7637-2) and consider additional margin due to lack of automotive grading, especially in safety-critical or long-lifecycle designs.
Can the P4SMA350A be used as a drop-in replacement for P6SMB350A in surface mount PCB designs, and what layout considerations must be addressed?
While both the P4SMA350A and P6SMB350A protect at 350V, they differ in package (SMA vs SMB) and peak pulse handling (400W vs 600W). Replacing P6SMB350A with P4SMA350A risks insufficient surge margin in high-energy events like lightning-induced transients. If footprint allows, verify that the SMA case provides adequate creepage and that copper traces are widened to improve heat dissipation. Avoid direct drop-in replacement without assessing surge energy exposure and derating by at least 25%.
What are the failure modes of P4SMA350A under sustained overvoltage conditions, and how can they be mitigated in power supply designs?
The P4SMA350A is designed for transient suppression, not continuous overvoltage. If exposed to sustained overvoltage above its 332V breakdown, it may fail short-circuit, leading to thermal runaway and potential PCB damage. In power supply applications, always pair the P4SMA350A with an upstream current-limiting fuse or PTC and monitor input voltage stability. Use in conjunction with a primary OVP circuit to prevent long-term conduction that exceeds its duty-cycle limits.
How does the unidirectional design of the P4SMA350A impact its use in bidirectional signal lines, and what are the alternatives?
The P4SMA350A is unidirectional, meaning it only protects against positive transients relative to its cathode. Using it on bidirectional lines (e.g., communication buses) can result in unintended forward conduction or lack of negative transient protection. For such cases, consider a bidirectional variant like the P4SMA350CA, or use complementary clamping with a second diode—though this increases complexity. Always verify signal polarity and transient directionality before integrating the P4SMA350A into data or control lines.
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.
P4SMA350A CAD Models
NextGen Components P4SMA350A PCB symbols & footprints
productDetail
