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SMC3K51CA-M3/57
Vishay General Semiconductor - Diodes Division
TVS DIODE 51VWM 82.4VC DO214AB
17852 Pcs New Original In Stock
82.4V Clamp 36.4A Ipp Tvs Diode Surface Mount DO-214AB (SMCJ)
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5.0 / 5.0
- (489 Ratings)
SMC3K51CA-M3/57
Product Overview
997450
DiGi Electronics Part Number
SMC3K51CA-M3/57-DGManufacturer
Vishay General Semiconductor - Diodes Division
SMC3K51CA-M3/57
Description
TVS DIODE 51VWM 82.4VC DO214ABInventory
17852 Pcs New Original In Stock
82.4V Clamp 36.4A Ipp Tvs Diode Surface Mount DO-214AB (SMCJ)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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SMC3K51CA-M3/57 Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
TransZorb®
Product Status
Active
Type
Zener
Bidirectional Channels
1
Voltage - Reverse Standoff (Typ)
51V
Voltage - Breakdown (Min)
56.7V
Voltage - Clamping (Max) @ Ipp
82.4V
Current - Peak Pulse (10/1000µs)
36.4A
Power - Peak Pulse
3000W (3kW)
Power Line Protection
No
Applications
General Purpose
Capacitance @ Frequency
-
Operating Temperature
-55°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
DO-214AB, SMC
Supplier Device Package
DO-214AB (SMCJ)
Base Product Number
SMC3K51
Datasheet & Documents
HTML Datasheet
SMC3K51CA-M3/57-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Other Names
SMC3K51CA-M3/57GIDKR
SMC3K51CA-M3/57GITR
SMC3K51CAM357
SMC3K51CA-M3/57GICT
Standard Package
850
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
SMC3K51CA-M3/9A
Vishay General Semiconductor - Diodes Division
1030
SMC3K51CA-M3/9A-DG
0.3241
Direct
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
いつも丁寧なフォローとサポートで、安心して取引できています。
de desembre 02, 2025
注文後の対応が素早く、商品到着も予定通りで助かりました。アフターケアも充実しています。
de desembre 02, 2025
I've had nothing but positive experiences with the robustness of their products.
de desembre 02, 2025
The real-time tracking updates are a game-changer—so precise and reassuring.
de desembre 02, 2025
Their after-sales team is proactive in ensuring my satisfaction and resolving any concerns.
de desembre 02, 2025
I highly value the consistent excellence of DiGi Electronics’ products.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the SMC3K51CA-M3/57 for surge protection in industrial power supplies, and how can clamping voltage affect downstream components?
When designing in the SMC3K51CA-M3/57, engineers must consider its 82.4V max clamping voltage under peak pulse current (36.4A, 10/1000µs), which could stress sensitive downstream ICs rated below 90V, such as microcontrollers or level translators. To mitigate risk, verify that all protected nodes have sufficient voltage margins—especially during EFT or lightning surge events. Additionally, ensure PCB layout minimizes inductance in the TVS path to avoid voltage overshoot exceeding the specified clamping level. Always simulate transient events using the SMC3K51CA-M3/57's actual I-V characteristics in SPICE or similar tools, not just idealized models.
How does the SMC3K51CA-M3/57 compare to the SMCJ51CA in terms of surge current handling and thermal performance under repetitive ESD events?
The SMC3K51CA-M3/57 and SMCJ51CA share similar electrical specs, including 51V reverse standoff and 82.4V clamping, but the SMC3K51CA-M3/57 is part of Vishay's robust TransZorb® series designed for higher reliability in harsh environments. While both handle 36.4A peak pulse current, the SMC3K51CA-M3/57 offers better thermal stability due to its enhanced SMC package construction—important when exposed to repetitive ESD or surge events. For applications with frequent transients (e.g., industrial control systems), the SMC3K51CA-M3/57's tighter parameter control and proven long-term reliability reduce degradation risks compared to generic SMCJ51CA variants.
Can the SMC3K51CA-M3/57 be used as a drop-in replacement for the SMDJ51CA in an existing 48V DC rail protection circuit, and what layout adjustments are needed?
The SMC3K51CA-M3/57 can functionally replace the SMDJ51CA on a 48V DC line since both have a 51V standoff and ~82V clamping; however, it is not a direct footprint-compatible drop-in due to the SMDJ51CA being in a larger DO-214AC (SMA) package versus DO-214AB (SMCJ) for the SMC3K51CA-M3/57. PCB redesign is required to accommodate the larger SMC package. Additionally, ensure the updated layout maintains short, low-inductance paths to ground to preserve the SMC3K51CA-M3/57's 3kW peak pulse capability. Consider this upgrade beneficial—it improves surge robustness with better power dissipation and mechanical stability.
What are the reliability concerns when operating the SMC3K51CA-M3/57 near its maximum junction temperature of 150°C in sealed outdoor enclosures?
Operating the SMC3K51CA-M3/57 near 150°C—its maximum rated junction temperature—can accelerate parametric drift and reduce long-term reliability, especially after repeated surge events. In sealed outdoor enclosures with limited airflow, cumulative thermal stress from ambient heat and internal power dissipation during clamping can lead to premature aging. To mitigate this risk, conduct a thermal analysis using worst-case ambient (e.g., 85°C) plus self-heating during surge duty cycles. Add thermal vias and increase copper pour for heatsinking, and derate operational exposure—ideally keep Tj below 130°C. Also, avoid placing the SMC3K51CA-M3/57 near other heat sources on the board.
What design considerations arise when replacing the 3SMC51CA TR13 PBFREE with the SMC3K51CA-M3/57 in a high-reliability transportation application?
Replacing the 3SMC51CA TR13 PBFREE with the SMC3K51CA-M3/57 in transportation systems (e.g., rail or automotive auxiliary supplies) requires validating that the SMC3K51CA-M3/57 meets or exceeds the surge robustness of the original part. While both are DO-214AB devices with similar clamping voltages, the SMC3K51CA-M3/57 offers better assurance through Vishay's AEC-Q101-qualified manufacturing processes and tighter quality controls. Ensure the SMC3K51CA-M3/57 is sourced from authorized stock to avoid counterfeit risks. Also, revalidate the protection level per ISO 7637-2 or IEC 61000-4-5, as minor differences in dynamic resistance can affect system-level transient performance when using the SMC3K51CA-M3/57.
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SMC3K51CA-M3/57 CAD Models
Vishay General Semiconductor - Diodes Division SMC3K51CA-M3/57 PCB symbols & footprints
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