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P6SMB120A
NextGen Components
TVS Diode 600W 120V UNI SMB
47219 Pcs New Original In Stock
165V Clamp Ipp Tvs Diode Surface Mount SMB (DO-214AA)
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5.0 / 5.0
- (341 Ratings)
P6SMB120A
Product Overview
2056857
DiGi Electronics Part Number
P6SMB120A-DGManufacturer
NextGen Components
P6SMB120A
Description
TVS Diode 600W 120V UNI SMBInventory
47219 Pcs New Original In Stock
165V Clamp Ipp Tvs Diode Surface Mount SMB (DO-214AA)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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P6SMB120A Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
-
Series
SMB
Product Status
Active
Type
Zener
Unidirectional Channels
1
Voltage - Reverse Standoff (Typ)
102V
Voltage - Breakdown (Min)
114V
Voltage - Clamping (Max) @ Ipp
165V
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
P6SMB120A-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-P6SMB120ATR
Standard Package
6,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
사후 지원도 믿을 만하고, 고객을 위해 항상 최선을 다해 주세요.
de desembre 02, 2025
Les délais de livraison sont toujours respectés grâce à leur gestion logistique impeccable.
de desembre 02, 2025
Their commitment to complete packaging reflects their high standards.
de desembre 02, 2025
Over multiple purchases, I have observed that their quality controls are very strict, leading to high-quality products.
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Frequently Asked Questions (FAQ)
Can I use the P6SMB120A to replace a P6KE120A in a 110V industrial control board, and what risks should I consider during the swap?
The P6SMB120A is a surface-mount TVS diode with a 102V reverse standoff and 165V clamping voltage, while the P6KE120A is a through-hole part with similar electrical specs but different thermal and mechanical characteristics. Although both are 600W unidirectional TVS diodes rated for 120V systems, direct replacement requires caution: the P6SMB120A’s SMB (DO-214AA) package has lower thermal mass and may experience higher junction temperatures under repetitive surge events. Ensure your PCB layout provides adequate copper pour for heat dissipation and verify that the surge waveform (e.g., IEC 61000-4-5) does not exceed the P6SMB120A’s peak pulse capability in your specific mounting condition. Also confirm creepage and clearance distances are maintained, as surface-mount parts can reduce isolation spacing on densely populated boards.
What are the key thermal derating considerations when using the P6SMB120A in an enclosed automotive module operating near 125°C ambient?
The P6SMB120A has a maximum junction temperature of 150°C and is rated for -65°C to 150°C operation, but its 600W peak power rating is specified at 25°C with ideal heatsinking. In an enclosed automotive environment at 125°C ambient, you must derate the allowable pulse energy significantly—typically by 50% or more—due to reduced thermal headroom and limited convection. Without a dedicated thermal pad or connection to a ground plane acting as a heatsink, the device may overstress during repeated transients. We recommend simulating or testing worst-case surge scenarios (e.g., load dump per ISO 7637-2) with actual board thermal conditions and consider adding a thermal via array under the SMB pad to improve heat extraction.
How does the P6SMB120A compare to the SMAJ120A for protecting a 100V DC motor drive circuit against inductive kickback?
While both the P6SMB120A (600W, SMB package) and SMAJ120A (400W, SMA package) have similar breakdown and clamping voltages (~114V min, ~165V max), the P6SMB120A offers 50% higher peak pulse power, making it better suited for high-energy transient events like those from large inductive loads. However, the SMAJ120A’s smaller SMA package may fit tighter layouts but dissipates less heat. For DC motor drives with long cable runs or high inductance, the P6SMB120A provides superior surge robustness—but only if the PCB layout includes sufficient copper area beneath the device to act as a heatsink. Avoid using the SMAJ120A if your system experiences frequent or high-magnitude back-EMF spikes; the P6SMB120A reduces the risk of premature failure in such demanding conditions.
Is the P6SMB120A suitable for protecting RS-485 communication lines powered by a 48V phantom supply, and what layout pitfalls should I avoid?
The P6SMB120A can protect 48V RS-485 lines since its 102V reverse standoff exceeds the nominal bus voltage, and its 165V clamping voltage stays below typical transceiver absolute maximums (usually ≥15V above supply). However, its relatively high junction capacitance (~1.5–3 pF typical for this class) may marginally affect signal integrity at data rates above 10 Mbps—test eye diagrams if operating near the limit. More critically, place the P6SMB120A as close as possible to the connector, with short, symmetrical traces to minimize inductive ringing. Avoid routing protected signals over split planes or near noisy digital lines, as residual transient energy can couple into the data path. Also ensure the ground reference for the TVS is tied directly to the system chassis or ground plane with minimal impedance.
What reliability concerns arise when using the P6SMB120A in outdoor solar inverter applications with frequent lightning-induced surges?
In outdoor solar inverters exposed to lightning transients (e.g., IEC 61000-4-5 Class 4), the P6SMB120A’s 600W rating may be insufficient for direct primary protection against high-energy surges unless combined with upstream coordination devices like gas discharge tubes or MOVs. Repeated exposure to surges near its peak pulse limit can cause cumulative degradation, leading to premature short-circuit failure—especially if thermal management is inadequate. To mitigate risk, use the P6SMB120A as secondary protection behind a robust primary stage, ensure conformal coating is applied (MSL 1 allows unlimited floor life but doesn’t guarantee environmental resilience), and perform HASS (Highly Accelerated Stress Screening) during validation. Monitor field returns for early signs of TVS wear, as latent failures in solar installations can lead to cascading damage during grid disturbances.
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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.
P6SMB120A CAD Models
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