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SMF7.0CA
ANBON SEMICONDUCTOR (INT'L) LIMITED
TVS DIODE 200W 7.78V-8.6V SOD-1
30218 Pcs New Original In Stock
12V Clamp 16.7A Ipp Tvs Diode Surface Mount SOD-123
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5.0 / 5.0
- (51 Ratings)
SMF7.0CA
Product Overview
2668872
DiGi Electronics Part Number
SMF7.0CA-DGManufacturer
ANBON SEMICONDUCTOR (INT'L) LIMITED
SMF7.0CA
Description
TVS DIODE 200W 7.78V-8.6V SOD-1Inventory
30218 Pcs New Original In Stock
12V Clamp 16.7A Ipp Tvs Diode Surface Mount SOD-123
Quantity
Minimum 1
Minimum 1
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SMF7.0CA Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
SMF
Product Status
Active
Type
Zener
Bidirectional Channels
1
Voltage - Reverse Standoff (Typ)
7V
Voltage - Breakdown (Min)
7.78V
Voltage - Clamping (Max) @ Ipp
12V
Current - Peak Pulse (10/1000µs)
16.7A
Power - Peak Pulse
200W
Power Line Protection
No
Applications
General Purpose
Capacitance @ Frequency
-
Operating Temperature
-55°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
SOD-123F
Supplier Device Package
SOD-123
Datasheet & Documents
HTML Datasheet
SMF7.0CA-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
Additional Information
Other Names
4530-SMF7.0CATR
4530-SMF7.0CACT
4530-SMF7.0CADKR
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
信頼できるサポートと手頃な価格で、長くお付き合いできそうです。
грудня 02, 2025
Their products maintain consistent performance, giving me peace of mind.
грудня 02, 2025
Their pricing advantages help me save significantly while still getting quality products.
грудня 02, 2025
They offer clear return and warranty policies, giving me peace of mind.
грудня 02, 2025
The company's logistics operations are impressively coordinated, reducing delays.
грудня 02, 2025
I highly recommend DiGi Electronics for their dependable products and support.
грудня 02, 2025
Amazing customer service—professional, responsive, and incredibly efficient.
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Frequently Asked Questions (FAQ)
Can the SMF7.0CA TVS diode safely replace a SMAJ7.0A in a 12V automotive power rail protection circuit, and what are the key reliability risks to consider during this substitution?
The SMF7.0CA can be considered as a replacement for the SMAJ7.0A in many 12V automotive applications due to similar breakdown voltage (7.78V min) and clamping performance (12V max @ 16.7A), but critical differences exist. The SMF7.0CA is in a smaller SOD-123 package versus the SMAJ7.0A’s SMA (DO-214AC) footprint, which reduces thermal mass and may increase junction temperature under repeated surge events. While both are rated for 200W peak pulse power, the SMF7.0CA’s lower thermal resistance demands careful PCB layout—ensure adequate copper pour and thermal vias. Additionally, verify that your application’s surge waveform (e.g., ISO 7637-2 pulses) does not exceed the SMF7.0CA’s 10/1000µs rating; for faster transients like load dump, consider derating or using a higher-power TVS. Always validate in-system under worst-case conditions to avoid latent failure from cumulative stress.
What PCB layout practices are essential when designing in the SMF7.0CA for high-energy transient protection on a compact industrial control board?
When integrating the SMF7.0CA into space-constrained industrial designs, prioritize short, wide traces from the protected line directly to the TVS anode and a solid ground return path to minimize parasitic inductance—this prevents voltage overshoot during fast transients. Use a ground plane directly beneath the device with multiple thermal vias to enhance heat dissipation, especially since the SOD-123 package has limited thermal capacity. Avoid routing sensitive signal lines near the TVS or its ground path to reduce coupling noise. Place the SMF7.0CA as close as possible to the connector or entry point of the transient source. For multi-layer boards, dedicate a low-impedance ground layer; for two-layer designs, ensure the ground return trace is at least 2–3x wider than signal traces. These practices mitigate clamping inefficiency and improve long-term reliability under repeated surge exposure.
How does the SMF7.0CA compare to the PESD7V0R1BLSY in protecting a 5V microcontroller I/O line from ESD, and when should I avoid using the SMF7.0CA for this purpose?
The SMF7.0CA is not suitable for direct ESD protection on 5V microcontroller I/O lines despite its 7V standoff voltage. Its relatively high capacitance (though unspecified, typical for 200W TVS diodes) and slow response compared to dedicated ESD suppressors like the PESD7V0R1BLSY can distort high-speed signals and allow damaging voltage spikes to reach the MCU before clamping occurs. The PESD7V0R1BLSY, with ultra-low capacitance (<0.5pF) and sub-nanosecond response, is engineered specifically for signal integrity-sensitive applications. Use the SMF7.0CA only for bulk power rail or slower interface protection (e.g., analog sensors), and pair it with a low-capacitance ESD diode at the I/O pin if needed. For USB, Ethernet, or high-speed digital lines, always prefer purpose-built ESD devices over general-purpose TVS diodes like the SMF7.0CA.
Is the SMF7.0CA reliable for long-term operation in outdoor solar inverter environments where ambient temperatures regularly exceed 85°C?
The SMF7.0CA can operate reliably in high-temperature environments up to 150°C junction temperature, but sustained ambient temperatures above 85°C require careful derating and thermal management. At elevated temperatures, the effective peak pulse power handling decreases due to reduced thermal conductivity and increased leakage current. In solar inverters, where thermal cycling and prolonged heat exposure are common, ensure the PCB provides sufficient copper area (≥100 mm² recommended) connected to the cathode pad to act as a heat sink. Monitor cumulative surge exposure—repeated transients without adequate cooling can degrade the Zener junction over time. Consider conformal coating to mitigate moisture effects, though MSL 1 rating allows unlimited floor life. For mission-critical outdoor installations, perform accelerated life testing simulating 10+ years of thermal and surge stress to validate longevity before deployment.
What failure modes should I anticipate if the SMF7.0CA is subjected to reverse polarity events in a 12V battery-powered system, and how can I protect against them?
If the SMF7.0CA is installed in a circuit exposed to reverse battery connection (e.g., -12V applied), it will experience reverse breakdown far beyond its rated standoff voltage, likely leading to immediate thermal runaway and catastrophic failure—either open or shorted. Unlike bidirectional TVS diodes, the SMF7.0CA is unidirectional (Zener-type), offering no protection against negative transients. To mitigate this risk, place a series Schottky diode (e.g., BAT54S) between the power source and the SMF7.0CA, or use a bidirectional TVS like the SMF7.0CA-BI if available. Alternatively, implement a MOSFET-based reverse polarity protection circuit upstream. Always include a fuse or PTC resettable fuse to limit fault current during such events. Design validation should include intentional reverse-polarity testing to confirm system-level robustness, especially in field-serviceable or user-connected applications.
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.
SMF7.0CA CAD Models
ANBON SEMICONDUCTOR (INT'L) LIMITED SMF7.0CA PCB symbols & footprints
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