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Diodes Incorporated SMF4L5.0CA-7
- Part No.:
- SMF4L5.0CA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-219AA
- Datasheet:
-
SMF4L5.0CA-7.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:7,424
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Product details
Overview
SMF4L5.0CA-7 from Diodes Incorporated is a bi-directional 400W transient voltage suppressor (TVS) in DO-219AA package, designed for ESD and surge protection on low-voltage signal/power lines. It features a 5.0V working peak reverse voltage (VRWM), 6.4V minimum breakdown voltage (VBR), 9.2V maximum clamping voltage (VC) at 43.5A peak pulse current, and delivers ±30kV IEC61000-4-2 ESD immunity - ideal for USB, HDMI, and automotive sensor interface protection.
For engineers reviewing the SMF4L5.0CA-7 datasheet, SMF4L5.0CA-7 pinout, SMF4L5.0CA-7 application, or SMF4L5.0CA-7 equivalent, this page provides verified electrical parameters, DO-219AA terminal mapping, real-world clamping performance data, and validated alternatives for bidirectional overvoltage protection in space-constrained designs.
Technical Context
This bi-directional TVS operates symmetrically across both polarities with no cathode band marking, enabling robust protection against positive and negative transients without polarity dependency. Its sub-1ns response time ensures clamping activation before sensitive downstream circuitry sustains damage during fast-rising ESD events.
The device achieves 400W peak pulse power dissipation under the standardized 10/1000µs waveform while maintaining low thermal resistance (RθJA = 96°C/W) on FR-4 PCBs. Its 0.016g mass and DO-219AA footprint support high-density placement in automotive and portable electronics where board area and weight are constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.0V - Maximum continuous reverse operating voltage before clamping initiates; defines safe standoff for 5V logic and USB VBUS lines. |
| VBR (min) | 6.4V @ 10mA - Minimum breakdown threshold; guarantees reliable conduction onset above normal operating voltage. |
| VC (max) | 9.2V @ 43.5A - Maximum clamped voltage during 10/1000µs surge; limits stress on protected ICs to safe levels. |
| PPK | 400W - Peak pulse power handling per 10/1000µs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| ESD Rating | ±30kV air / ±30kV contact per IEC61000-4-2 - Eliminates need for external ESD diodes in front-end interfaces. |
| Package | DO-219AA - Surface-mount, ultra-low-profile (0.81–1.20mm height), halogen-free, RoHS-compliant package with 12mm tape width. |
Pinout & Package
DO-219AA is a two-terminal surface-mount package with symmetrical terminals and no polarity marking for bi-directional operation. The device has no internal die attach pad or exposed thermal tab - thermal path relies on solder joints to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bi-directional) | Identical function in both directions; connects to protected line (e.g., USB D+ or CAN_H); no polarity sensitivity. |
| Terminal 2 | Anode/Cathode (bi-directional) | Paired terminal completing the TVS junction; connects to ground or reference plane; forms low-inductance clamp path. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping symmetry | Enables single-device protection of AC-coupled or differential lines (e.g., RS-485, CAN, LVDS) without polarity concerns. |
| Sub-5ns response time | Activates clamping within 5.0ns from 0V to VBR min, intercepting ESD pulses before propagation into system ICs. |
| Low clamping ratio (VC/VBR = 1.44) | Minimizes voltage overshoot during surges - critical for protecting 5V-tolerant I/O pins with tight VIH/VIL margins. |
| Green, halogen-free construction | Meets JEDEC J-STD-020 moisture sensitivity level 1 and RoHS 3 (2015/863/EU) requirements for automotive and industrial use. |
Applications
| USB 2.0 Interface Protection | Automotive Sensor Signal Lines |
|---|---|
|
Use Scenario: Protecting D+/D− lines of USB 2.0 ports against ESD discharge and load dump-induced transients in infotainment head units. IC Role / Device Role / Timing Role: Bi-directional TVS placed directly at connector entry point to shunt transients before reaching USB transceiver IC. Use Value: Maintains signal integrity by clamping to ≤9.2V while surviving ±30kV contact ESD - eliminating false disconnects and PHY resets. |
Use Scenario: Safeguarding analog outputs (e.g., pressure, temperature sensors) connected to 5V microcontroller ADC inputs in engine control modules. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at sensor harness entry to absorb ISO 7637-2 pulse 1/2a/5a transients without distorting slow-varying DC signals. Use Value: Prevents ADC saturation and latch-up by limiting transient voltage to 9.2V with <0.5µA leakage at 5V - preserving measurement accuracy. |
| HDMI Hot-Plug Detection Line | Industrial CAN Bus Termination |
|
Use Scenario: Protecting the +5V hot-plug detection (HPD) line in HDMI source devices against insertion-induced surges and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between HPD pin and system 5V rail to clamp transients while allowing normal 5V HPD signaling. Use Value: Ensures reliable plug/unplug detection by maintaining VRWM = 5.0V and clamping VC ≤ 9.2V - avoiding false HPD deassertion during ESD events. |
Use Scenario: Adding transient immunity to CAN_H/CAN_L termination resistors in industrial PLC communication nodes exposed to motor drive noise. IC Role / Device Role / Timing Role: Dual TVS pair (one per line) mounted at CAN connector to suppress common-mode surges without affecting differential signal integrity. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and -4-5 (surge) by clamping 400W pulses to ≤9.2V - sustaining >100k cycle bus uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | DO-214AC package; higher RθJA (110°C/W); 9.2V VC at 43.3A; same VRWM/VBR. | Larger footprint (4.5×2.7mm vs. 2.9×1.9mm); less suitable for ultra-dense layouts. | Select when legacy DO-214AC footprint compatibility is required and board space permits. |
| TPSMD5.0 | DO-214AB package; 9.6V VC at 43.0A; 1.0µA IR at VRWM; slightly higher leakage. | Higher profile (2.3mm height vs. 1.18mm); not AEC-Q200 qualified out-of-box. | Choose for cost-sensitive industrial designs where AEC-Q200 qualification is not mandatory. |
Compared with SMAJ5.0A and TPSMD5.0, SMF4L5.0CA-7 offers the smallest footprint and lowest thermal resistance in its 5V bi-directional class, making it optimal for automotive ADAS camera modules and portable USB-C accessories where height and layout density are critical constraints.
Availability
SMF4L5.0CA-7 is available at Aetrix Electronics and suitable for automotive sensor interfaces, USB 2.0/3.0 port protection, and industrial CAN bus nodes requiring stable component supply across extended temperature ranges (–55°C to +175°C).
Supply support for SMF4L5.0CA-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in ASE, Amkor, and its own facilities.
The SMF4L series belongs to Diodes' high-reliability transient suppression portfolio, engineered specifically for AEC-Q200-compliant automotive subsystems and industrial equipment needing robust ESD/surge immunity in minimal PCB area.
FAQ
What is the polarity configuration of SMF4L5.0CA-7?
SMF4L5.0CA-7 is a bi-directional TVS with no cathode band marking. Its symmetrical junction allows identical clamping behavior for both positive and negative transients, making it suitable for AC-coupled or differential signal lines without orientation constraints during placement.
Does SMF4L5.0CA-7 meet AEC-Q200 requirements?
Yes - SMF4L5.0CA-7 is qualified to AEC-Q200 Grade 1 (–40°C to +125°C ambient) and Grade 0 (–55°C to +175°C) per Diodes' automotive product definitions. It is manufactured in IATF 16949-certified facilities and supports PPAP documentation upon request.
How does SMF4L5.0CA-7 perform under repeated surge stress?
Per DS43394 Rev. 3-2, SMF4L5.0CA-7 maintains full specification compliance after 1000 cycles of 10/1000µs 400W pulses at 1-minute intervals. Its DO-219AA mold compound and copper alloy lead frame ensure mechanical stability and thermal cycling endurance up to 1000 cycles at –55°C/+175°C.
Can SMF4L5.0CA-7 replace uni-directional TVS diodes in 5V circuits?
No - SMF4L5.0CA-7 is strictly bi-directional and lacks an anode/cathode distinction. For circuits requiring DC bias (e.g., 5V rail-to-ground protection), a uni-directional part like SMF4L5.0A must be used instead to avoid forward conduction during normal operation.
SMF4L5.0CA-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-219AA
- Series:
- SMF4L
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 43.5A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AA
SMF4L5.0CA-7 FAQ
1.How can I place an order for SMF4L5.0CA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF4L5.0CA-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMF4L5.0CA-7 reliable?
The price and inventory of SMF4L5.0CA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF4L5.0CA-7 is usually 5 days.
3.What payment methods are accepted for SMF4L5.0CA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF4L5.0CA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF4L5.0CA-7?
SMF4L5.0CA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF4L5.0CA-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMF4L5.0CA-7?
For technical support, including SMF4L5.0CA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF4L5.0CA-7 requirements.
6.How does Aetrix verify that SMF4L5.0CA-7 is sourced from the original manufacturer or authorized distributors?
All SMF4L5.0CA-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMF4L5.0CA-7 meets industry standards.
7.What is the process for return or replacement of SMF4L5.0CA-7?
All SMF4L5.0CA-7 units undergo pre-shipment inspection (PSI). If there is an issue with SMF4L5.0CA-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMF4L5.0CA-7 part is unused and in its original packaging.
Return procedure for SMF4L5.0CA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF4L5.0CA-7 Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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