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P6SMB12CA
NextGen Components
TVS Diode 600W 12V BI SMB
9468 Pcs New Original In Stock
16.7V Clamp Ipp Tvs Diode Surface Mount SMB (DO-214AA)
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5.0 / 5.0
- (511 Ratings)
P6SMB12CA
Product Overview
2056836
DiGi Electronics Part Number
P6SMB12CA-DGManufacturer
NextGen Components
P6SMB12CA
Description
TVS Diode 600W 12V BI SMBInventory
9468 Pcs New Original In Stock
16.7V Clamp Ipp Tvs Diode Surface Mount SMB (DO-214AA)
Quantity
Minimum 1
Minimum 1
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P6SMB12CA 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)
10.2V
Voltage - Breakdown (Min)
11.4V
Voltage - Clamping (Max) @ Ipp
16.7V
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
P6SMB12CA-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-P6SMB12CATR
Standard Package
6,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
포장 상태가 매우 만족스럽고, 고객 서비스도 최상입니다.
грудня 02, 2025
Très content de leur professionnalisme et de leur rapidité.
грудня 02, 2025
Une expérience d'achat fluide, rapide et économique. Je recommande vivement.
грудня 02, 2025
Ich bekomme meine Bestellungen immer sehr schnell. Die Verpackung ist immer robust und sicher.
грудня 02, 2025
DiGi Electronics is a model for reliable shipping practices.
грудня 02, 2025
The staff are always friendly and ready to help, plus their prices are fair.
грудня 02, 2025
The thoughtful packaging prevented any damages, and the speed of delivery was outstanding.
грудня 02, 2025
Their eco-conscious packaging efforts are a step toward a greener future.
грудня 02, 2025
I value the consistent logistics updates that make tracking my order effortless.
грудня 02, 2025
Shipping is lightning quick—my orders usually arrive within 24 hours.
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Frequently Asked Questions (FAQ)
Can the P6SMB12CA TVS diode safely replace a SMAJ12A in a 12V automotive power rail application, and what are the key reliability risks if the clamping voltage differs?
The P6SMB12CA can replace the SMAJ12A in many 12V automotive applications due to similar breakdown voltage (11.4V min) and form factor (SMB package), but the P6SMB12CA has a higher clamping voltage (16.7V vs. 19.9V for SMAJ12A at 10A)—meaning it actually clamps more aggressively. However, this tighter clamping may increase stress on downstream components if they're not rated for faster transient suppression. Verify that your load circuitry can tolerate the lower clamping voltage and ensure the P6SMB12CA’s 600W peak pulse power meets or exceeds the expected surge energy (e.g., ISO 7637-2 pulses). Also confirm layout symmetry since bidirectional operation is critical in automotive reverse-polarity scenarios.
What layout and PCB design practices are essential when using the P6SMB12CA to protect a sensitive 3.3V microcontroller from indirect lightning surges on a 12V input line?
When protecting a 3.3V MCU with the P6SMB12CA on a 12V rail, place the diode as close as possible to the input connector to minimize inductive loop area—this reduces let-through voltage during fast transients. Use wide, short traces (≥20 mil) to the ground plane and avoid vias between the TVS and ground. Pair the P6SMB12CA with a series ferrite bead and bulk capacitor (e.g., 10µF ceramic + 100nF) upstream to absorb residual energy and filter high-frequency noise. Ensure the ground return path is low-impedance; a star-ground configuration near the TVS improves clamping effectiveness. Without proper layout, parasitic inductance can cause voltage overshoot exceeding the 16.7V clamp, risking MCU damage despite TVS presence.
Is the P6SMB12CA suitable for long-term reliability in outdoor industrial enclosures exposed to temperature cycling from -40°C to +85°C, and how does its MSL rating affect assembly?
Yes, the P6SMB12CA is well-suited for outdoor industrial environments with its operating range of -65°C to +150°C (TJ), providing margin beyond typical field conditions. Its MSL 1 (unlimited floor life) rating means no special moisture-sensitive handling or baking is required before reflow, simplifying high-volume production and field rework. However, repeated thermal cycling can induce mechanical stress at the solder joints due to CTE mismatch between the SMB package and PCB. Mitigate this by using a robust solder paste (e.g., SAC305), ensuring proper pad design per IPC-7351, and avoiding placement near high-heat components that exacerbate thermal gradients. Long-term reliability also depends on keeping junction temperature below 125°C during surge events to prevent cumulative degradation.
How does the P6SMB12CA compare to the Littelfuse SMBJ12CA for protecting RS-485 communication lines in noisy factory environments, especially regarding capacitance and signal integrity?
While both the P6SMB12CA and Littelfuse SMBJ12CA are 12V bidirectional TVS diodes in SMB packages with similar clamping voltages (~16.7V), the SMBJ12CA typically specifies lower junction capacitance (around 50pF vs. ~80–100pF for P6SMB12CA), making it better suited for high-speed RS-485 networks (up to 10 Mbps). Using the P6SMB12CA on such lines may introduce signal distortion or rise-time degradation due to higher capacitance, especially over long cables. If your RS-485 operates below 1 Mbps and prioritizes cost or supply availability, the P6SMB12CA is acceptable—but for high-speed or multidrop systems, consider low-capacitance alternatives like the SEMTECH SLVU2.8 or explicitly verify signal integrity via eye-diagram testing with the P6SMB12CA installed.
What failure modes should I anticipate if the P6SMB12CA is subjected to repeated IEC 61000-4-5 surge pulses without adequate heat sinking, and how can I derate it for mission-critical designs?
Without adequate thermal management, repeated IEC 61000-4-5 surges (e.g., 1.2/50µs waveforms) can cause cumulative heating in the P6SMB12CA, leading to thermal runaway, solder joint fatigue, or eventual short-circuit failure—even if individual pulses are within the 600W rating. The SMB package has limited thermal mass, so energy absorption is constrained by duty cycle and ambient temperature. For mission-critical designs, derate the peak pulse power by 30–50% when operating above 25°C ambient or with >1 surge per minute. Use a grounded thermal pad under the component, ensure good airflow, and consider parallel TVS diodes or hybrid protection (e.g., GDT + P6SMB12CA) for high-repetition surge environments. Always validate with accelerated life testing under expected surge profiles.
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P6SMB12CA CAD Models
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