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P4SMA27CA
NextGen Components
TVS Diode 400W 27V BI SMA
97184 Pcs New Original In Stock
37.5V Clamp Ipp Tvs Diode Surface Mount DO-214AC, SMA
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5.0 / 5.0
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P4SMA27CA
Product Overview
2052597
DiGi Electronics Part Number
P4SMA27CA-DGManufacturer
NextGen Components
P4SMA27CA
Description
TVS Diode 400W 27V BI SMAInventory
97184 Pcs New Original In Stock
37.5V Clamp Ipp Tvs Diode Surface Mount DO-214AC, SMA
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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P4SMA27CA Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
SMA
Product Status
Active
Type
Zener
Bidirectional Channels
1
Voltage - Reverse Standoff (Typ)
23.1V
Voltage - Breakdown (Min)
25.7V
Voltage - Clamping (Max) @ Ipp
37.5V
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
P4SMA27CA-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-P4SMA27CATR
Standard Package
5,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
品質と配送の速さに大満足。ショッピングがとても快適でした！
Dec 02, 2025
Customer service is fantastic—helping me quickly and generously after my purchase.
Dec 02, 2025
Their packaging ensures that even fragile items are well protected during shipping.
Dec 02, 2025
Their secure packaging ensures that products retain quality from warehouse to doorstep.
Dec 02, 2025
The prices at DiGi Electronics are very reasonable considering the quality.
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Frequently Asked Questions (FAQ)
What are the key design risks when using the P4SMA27CA for transient protection in a 24V industrial control circuit exposed to load dump events?
When using the P4SMA27CA in 24V industrial systems subject to load dump, a key risk is that the clamp voltage (max 37.5V at Ipp) may stress downstream components rated near 35V, such as certain microcontrollers or analog front-ends. Ensure downstream ICs have sufficient overvoltage margin or pair the P4SMA27CA with a series current-limiting component like a PTC or small inductor. Also verify that transient energy does not exceed 400W peak pulse rating—use actual surge waveforms (e.g., ISO 7637-2 pulses) to estimate Ipp and junction heating, especially at elevated ambient temperatures above 85°C.
How does the P4SMA27CA compare to the SMAJ26CA for bidirectional ESD and surge protection in I/O lines, and when should I choose one over the other?
The P4SMA27CA and SMAJ26CA both offer 400W peak pulse handling in the SMA package, but the P4SMA27CA has a slightly higher reverse standoff voltage (23.1V vs 23V) and a tighter breakdown minimum (25.7V vs 24.4V), making it better suited for stable 24V rails where overvoltage triggering must be predictable. The SMAJ26CA may conduct prematurely in noisy environments due to its lower breakdown threshold. Choose the P4SMA27CA when operating closer to the upper limit of 24V nominal systems; use the SMAJ26CA only if you need earlier clamping at lower fault voltages and can tolerate higher leakage risk near 24V.
Can the P4SMA27CA reliably protect a CAN bus line in an automotive environment with frequent low-energy ESD strikes but limited board space?
Yes, the P4SMA27CA can protect a CAN bus line in automotive settings, but caution is required due to its 37.5V clamping voltage, which exceeds typical CAN transceiver withstand ratings (usually ~40V absolute max). While it handles repetitive ESD (IEC 61000-4-2) well, the high clamp voltage leaves little margin. For CAN FD or robust nodes, it may suffice, but for sensitive nodes, consider a lower-clamping alternative like the SP1203-04UTG (clamp ~26V). If using the P4SMA27CA, ensure PCB layout minimizes inductance to reduce voltage overshoot during fast transients.
What thermal design considerations should I follow when integrating the P4SMA27CA in a densely populated PCB with multiple TVS diodes on shared power rails?
When placing the P4SMA27CA on a crowded PCB with multiple TVS devices, manage cumulative thermal load by verifying average power dissipation remains below derated limits—especially since the P4SMA27CA has no explicit average power rating. Use the junction-to-ambient thermal resistance of the SMA package (~500°C/W) to estimate temperature rise. Provide adequate copper pour (min 25mm² on one layer) for heat spreading, avoid enclosing the device in a sealed compartment, and space it from other high-dissipation components. At ambient temperatures above 100°C, reduce pulse repetition rate or use parallel TVS devices with current-sharing resistors.
Is the P4SMA27CA a suitable drop-in replacement for the SM8S27A in a 27V DC power rail, and what are the key differences in performance?
The P4SMA27CA is not a direct replacement for the SM8S27A due to significant differences in power handling—the SM8S27A provides 5000W peak pulse capacity versus 400W for the P4SMA27CA. While both clamp around 37.5V, the P4SMA27CA may fail under high-energy transients such as lightning surges or severe EFT, which the SM8S27A is designed to handle. Use the P4SMA27CA only in low-energy environments like portable equipment or secondary-side protection. For primary power input stages, stick with the SM8S27A or upgrade to a higher-rated device; never substitute the P4SMA27CA without revalidating the entire surge protection strategy.
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.
P4SMA27CA CAD Models
NextGen Components P4SMA27CA PCB symbols & footprints
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