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P6SMB27CA
NextGen Components
TVS Diode 600W 27V BI SMB
30375 Pcs New Original In Stock
37.5V Clamp Ipp Tvs Diode Surface Mount SMB (DO-214AA)
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P6SMB27CA
Product Overview
2056904
DiGi Electronics Part Number
P6SMB27CA-DGManufacturer
NextGen Components
P6SMB27CA
Description
TVS Diode 600W 27V BI SMBInventory
30375 Pcs New Original In Stock
37.5V Clamp Ipp Tvs Diode Surface Mount SMB (DO-214AA)
Quantity
Minimum 1
Minimum 1
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P6SMB27CA Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
SMB
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
600W
Power Line Protection
No
Applications
General Purpose
Operating Temperature
-65°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
DO-214AA, SMB
Supplier Device Package
SMB (DO-214AA)
Datasheet & Documents
HTML Datasheet
P6SMB27CA-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-P6SMB27CATR
Standard Package
6,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
문제 발생 시 빠르고 꼼꼼하게 해결해주셔서 매우 만족합니다.
Dec 02, 2025
DiGi Electronics的物流系統非常穩定，配送速度令人滿意。
Dec 02, 2025
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Frequently Asked Questions (FAQ)
Can the P6SMB27CA be used to protect a 24V industrial control circuit from inductive load switching transients, and what layout considerations are critical to avoid clamping failure?
Yes, the P6SMB27CA is suitable for protecting 24V industrial circuits, as its 23.1V reverse standoff voltage safely exceeds the nominal 24V rail while its 37.5V max clamping voltage stays below typical IC damage thresholds (e.g., 40V). However, poor PCB layout—such as long traces between the TVS and protected node—can introduce parasitic inductance that delays response and increases effective clamping voltage. To mitigate risk, place the P6SMB27CA within 5 mm of the protected input, use wide, short traces, and connect the ground pad directly to a solid ground plane with minimal via impedance.
Is the P6SMB27CA a drop-in replacement for the Littelfuse SMBJ26A in a 28V automotive power line application, and what performance trade-offs should I expect?
The P6SMB27CA is not a direct electrical replacement for the Littelfuse SMBJ26A despite similar packaging (SMB/DO-214AA). While both are 600W bidirectional TVS diodes, the SMBJ26A has a lower breakdown voltage (min 28.9V vs. 25.7V for P6SMB27CA) and higher clamping voltage (42.1V @ 14.3A vs. 37.5V @ 16A). Using the P6SMB27CA in a 28V system risks premature conduction during normal voltage swings (e.g., load dump transients below 25.7V), potentially causing nuisance activation. Only consider substitution if system transients are well-characterized and always exceed 26V, and validate with surge testing per ISO 7637-2.
How does the P6SMB27CA’s -65°C to 150°C operating temperature range impact reliability in high-vibration outdoor enclosures, and should derating be applied for long-term field deployment?
Although the P6SMB27CA is rated for -65°C to 150°C junction temperature, sustained operation near thermal limits—especially in sealed outdoor enclosures with poor airflow—can accelerate fatigue at the solder joints due to CTE mismatch between the SMB package and PCB. In high-vibration environments, this risk increases. Apply a 20–30% power derating above 125°C ambient and ensure adequate thermal relief in the PCB footprint. Additionally, use conformal coating to mitigate moisture-induced corrosion at temperature extremes, and consider mechanical strain relief if the board is subject to frequent thermal cycling.
What happens if I use the unidirectional P6SMB27CA (despite being labeled bidirectional) in a circuit with reverse-polarity protection, and how can I verify correct polarity handling during design-in?
The P6SMB27CA is genuinely bidirectional (symmetric Zener structure), so it will clamp both positive and negative transients equally—unlike unidirectional TVS diodes that fail short under reverse bias. However, mislabeling or confusion with unidirectional parts (e.g., P6SMB27A) can lead to design errors. To verify correct behavior, perform a dual-polarity surge test (e.g., IEC 61000-4-5) and confirm symmetrical clamping around 0V. Always cross-check the 'CA' suffix in the part number, which denotes bidirectional; absence indicates unidirectional. Incorrect assumption here may leave negative transients unprotected in RS-485 or CAN bus applications.
Can the P6SMB27CA handle repeated 10/1000μs surge pulses in a solar inverter DC bus application without degradation, and what failure modes should I monitor during qualification?
The P6SMB27CA is rated for a single 10/1000μs pulse at 600W, but repeated surges—common in solar inverters during lightning events or motor starts—can cause cumulative thermal stress leading to junction degradation or package cracking. Unlike specialized multi-strike TVS arrays, this general-purpose diode lacks guaranteed repetitive surge endurance. During qualification, monitor for increased leakage current (>5 µA at 23.1V) and shifts in breakdown voltage after 100+ surge cycles. For high-reliability solar applications, consider paralleling two P6SMB27CA devices (with balanced layout) or upgrading to a higher-energy TVS like the 1500W 1.5KE27CA, depending on expected transient frequency and energy.
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