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P4SMAJ26A
Diotec Semiconductor
TVS SMA 26V 400W UNIDIR
20379 Pcs New Original In Stock
42.1V Clamp 9.5A Ipp Tvs Diode Surface Mount SMA (DO-214AC)
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*Quantity
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5.0 / 5.0
- (470 Ratings)
P4SMAJ26A
Product Overview
9446485
DiGi Electronics Part Number
P4SMAJ26A-DGManufacturer
Diotec Semiconductor
P4SMAJ26A
Description
TVS SMA 26V 400W UNIDIRInventory
20379 Pcs New Original In Stock
42.1V Clamp 9.5A Ipp Tvs Diode Surface Mount SMA (DO-214AC)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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P4SMAJ26A Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
-
Series
-
Product Status
Active
Type
Zener
Unidirectional Channels
1
Voltage - Reverse Standoff (Typ)
26V
Voltage - Breakdown (Min)
28.9V
Voltage - Clamping (Max) @ Ipp
42.1V
Current - Peak Pulse (10/1000µs)
9.5A
Power - Peak Pulse
400W
Power Line Protection
No
Applications
General Purpose
Capacitance @ Frequency
-
Operating Temperature
-50°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
DO-214AC, SMA
Supplier Device Package
SMA (DO-214AC)
Datasheet & Documents
HTML Datasheet
P4SMAJ26A-DG
Environmental & Export Classification
RoHS Status
Not applicable
Moisture Sensitivity Level (MSL)
Not Applicable
REACH Status
Vendor Undefined
HTSUS
8541.10.0000
Additional Information
Other Names
2796-P4SMAJ26ATR
Standard Package
7,500
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
他們的物流速度非常快，而且客服回應也非常及時，整體體驗非常棒！
Dec 02, 2025
Bei DiGi Electronics fühle ich mich nach dem Kauf gut betreut. Support und Lagerbestand sind top.
Dec 02, 2025
Their customer service is consistently friendly, and the prices are very fair.
Dec 02, 2025
DiGi Electronics has excellent logistics planning, ensuring swift and timely delivery of services.
Dec 02, 2025
I appreciate the balance of affordability and professionalism at DiGi Electronics.
Dec 02, 2025
Their timely assistance and reliable product performance have significantly contributed to our operational excellence.
Dec 02, 2025
The attention to detail in their products is truly impressive.
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Frequently Asked Questions (FAQ)
What are the key design risks when using the P4SMAJ26A for transient protection in a 24V industrial control circuit?
When using the P4SMAJ26A in a 24V industrial system, the primary risk is overvoltage clipping during fast transients due to its 42.1V clamping voltage at 9.5A. Since the normal operating voltage (24V) is close to the 26V reverse standoff, ensure voltage spikes under normal operation don’t approach 28.9V breakdown. Consider combining with a series resistor or fuse to limit let-through energy to downstream ICs. Also verify that brief clamping events won't thermally stress the SMA package, especially in high-ambient environments near 150°C junction limit.
Can the P4SMAJ26A replace a SMF05CTT1G in a low-voltage DC power rail?
The P4SMAJ26A is not a suitable drop-in replacement for the SMF05CTT1G in low-voltage circuits. The SMF05CTT1G is rated for 5V applications with ~7V breakdown, while the P4SMAJ26A starts conducting at 28.9V, leaving sensitive 5V ICs unprotected. Attempting this substitution risks catastrophic failure during ESD or surge events. Use the P4SMAJ26A only in circuits where operational voltage is near 26V; for 5V rails, select a TVS like SMAJ5.0A instead.
How does the clamping performance of the P4SMAJ26A compare to the SMAJ26A in high-energy surge environments?
The P4SMAJ26A and SMAJ26A both specify 42.1V max clamping at 9.5A (10/1000µs), but the P4SMAJ26A from Diotec may exhibit slightly different dynamic resistance and response time due to process variations. In high-energy surge scenarios like IEC 61000-4-5 tested systems, validate the actual clamping waveform using a transient generator. The SMAJ26A from other suppliers may have better characterized performance—consider thermal derating and PCB layout symmetry to mitigate potential differences when integrating the P4SMAJ26A in mission-critical paths.
What PCB layout practices minimize thermal stress on the P4SMAJ26A during repeated ESD events?
To reduce thermal stress on the P4SMAJ26A during frequent ESD discharges, maximize copper pour on both anode and cathode pads to improve heat dissipation—use at least two thermal vias per pad connected to ground or power planes. Avoid daisy-chaining sensitive components after the P4SMAJ26A; place it near the entry point of transient sources. Maintain clearance to avoid arcing, and ensure the SMA (DO-214AC) footprint matches IPC standards to prevent solder joint cracking under thermal cycling.
Is the P4SMAJ26A suitable for automotive load dump protection in 24V systems?
The P4SMAJ26A is not recommended for automotive load dump protection. Load dump events can reach 120V for hundreds of milliseconds, far exceeding the 42.1V clamping voltage and 400W peak pulse rating of the P4SMAJ26A, leading to immediate failure. Use specialized high-energy TVS diodes like the 5KP26A or automated protection circuits with series FETs for such applications. The P4SMAJ26A should be reserved for ESD and short-duration transients in non-load-dump 24V subsystems such as sensors or logic 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.
P4SMAJ26A CAD Models
Diotec Semiconductor P4SMAJ26A PCB symbols & footprints
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