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P4SMA30A
NextGen Components
TVS Diode 400W 30V UNI SMA
1628 Pcs New Original In Stock
41.4V Clamp Ipp Tvs Diode Surface Mount DO-214AC, SMA
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5.0 / 5.0
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P4SMA30A
Product Overview
2053070
DiGi Electronics Part Number
P4SMA30A-DGManufacturer
NextGen Components
P4SMA30A
Description
TVS Diode 400W 30V UNI SMAInventory
1628 Pcs New Original In Stock
41.4V Clamp Ipp Tvs Diode Surface Mount DO-214AC, SMA
Quantity
Minimum 1
Minimum 1
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P4SMA30A Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
SMA
Product Status
Active
Type
Zener
Unidirectional Channels
1
Voltage - Reverse Standoff (Typ)
25.6V
Voltage - Breakdown (Min)
28.5V
Voltage - Clamping (Max) @ Ipp
41.4V
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
P4SMA30A-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-P4SMA30ATR
Standard Package
5,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
항상 친절하고 신속한 지원이 인상 깊었습니다.
Dec 02, 2025
구매 후 서비스도 꾸준히 좋아서 앞으로도 계속 이용할 것 같아요.
Dec 02, 2025
他們的包裝設計巧妙，能有效保護商品，價格方面更是具有明顯優勢，購買愉快！
Dec 02, 2025
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Dec 02, 2025
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Frequently Asked Questions (FAQ)
When designing in the P4SMA30A, how do I ensure the clamping voltage doesn't exceed sensitive downstream IC limits in a 24V industrial control circuit?
When using the P4SMA30A in a 24V system, the maximum clamping voltage is 41.4V at peak pulse current, which can risk damaging 28V-rated ICs. To mitigate this, verify the downstream IC's surge tolerance and consider adding a series current-limiting resistor or combining the P4SMA30A with a lower-capacitance fast-acting fuse to reduce let-through energy. Also, ensure PCB layout minimizes lead inductance to prevent voltage overshoot during fast transients, especially in high di/dt environments typical in industrial settings.
Can the P4SMA30A be used as a direct replacement for the SMAJ30A in an automotive load dump protection circuit, and what design risks should I watch for?
The P4SMA30A can serve as a functional replacement for the SMAJ30A in load dump scenarios, given both are 30V unidirectional TVS diodes in SMA packages. However, the P4SMA30A has a slightly higher clamping voltage (41.4V vs ~42.1V typical for SMAJ30A), so verify that headroom remains adequate for your 32V-rated components. Additionally, confirm that the P4SMA30A’s 400W peak pulse rating meets the ISO 7637-2 load dump profile in your design—especially if pulse repetition is expected. Consider thermal derating above 75°C ambient to maintain long-term reliability.
How does the P4SMA30A perform in high-temperature environments like automotive underhood applications, and does its leakage current increase significantly near 150°C?
The P4SMA30A operates up to 150°C junction temperature, making it suitable for underhood use. However, near max TJ, its reverse leakage current can increase significantly—possibly exceeding 100 µA depending on bias near breakdown. This elevated leakage can affect high-impedance sensor circuits or bias networks. To reduce risk, measure leakage under worst-case conditions during prototyping and ensure the reverse standoff voltage (25.6V) maintains sufficient margin below normal operating voltage to minimize standby power loss and thermal runaway potential.
What are the PCB layout best practices when integrating the P4SMA30A for ESD protection on a USB power rail with fast transient events?
For optimal ESD performance using the P4SMA30A on a USB VBUS line, place the device as close as possible to the connector to minimize trace inductance, which can otherwise amplify the transient voltage. Use short, wide traces (≥25 mils) and connect the ground path via multiple vias to an inner ground plane. Avoid daisy-chaining other components between the P4SMA30A and the protected node. Also, despite its 400W rating, consider pairing it with a polyfuse for sustained overcurrent events since the P4SMA30A only handles transient surges, not continuous faults.
Is the P4SMA30A compatible with lead-free reflow processes, and how does its MSL 1 rating affect manufacturing yield in high-volume production?
Yes, the P4SMA30A is RoHS-compliant and compatible with standard lead-free reflow profiles (peak ~260°C). Its MSL 1 rating (unlimited floor life) greatly simplifies manufacturing logistics, eliminating the need for baking or humidity-controlled storage. However, ensure your reflow thermal profile doesn’t exceed the device’s specified limits—especially peak temperature and time above liquidus—to prevent degradation of the Zener junction or package delamination. In high-volume production, this MSL 1 advantage reduces handling errors and improves yield compared to moisture-sensitive alternatives like MSL 2b or higher.
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.
P4SMA30A CAD Models
NextGen Components P4SMA30A PCB symbols & footprints
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