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Diodes Incorporated SMF4L13CA-7
- Part No.:
- SMF4L13CA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-219AA
- Datasheet:
-
SMF4L13CA-7.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:3,194
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Product details
Overview
SMF4L13CA-7 from Diodes Incorporated is a bi-directional transient voltage suppressor (TVS) diode in DO-219AA package, designed for high-energy ESD and surge protection on signal/power lines. It features 13V working peak reverse voltage (VRWM), 14.4V minimum breakdown voltage (VBR), 21.5V maximum clamping voltage (VC) at 18.6A peak pulse current, and 400W peak pulse power (10/1000µs waveform). Used in automotive battery contacts and USB interface protection.
For engineers reviewing the SMF4L13CA-7 datasheet, SMF4L13CA-7 pinout, SMF4L13CA-7 application, or SMF4L13CA-7 equivalent, this page delivers verified electrical parameters, DO-219AA mechanical data, IEC61000-4-2 ±30kV ESD rating, clamping performance under 10/1000µs surge, and direct alternatives with validated voltage/current trade-offs.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling robust protection of AC-coupled or differential signal paths without polarity constraints. Its low clamping ratio (VC/VBR ≈ 1.5) ensures minimal overvoltage exposure during transients up to 18.6A.
The device uses silicon avalanche junction technology with sub-5ns response time, achieving full clamping within 5.0ns from 0V to VBR min. Thermal resistance junction-to-soldering point is 70°C/W, supporting reliable operation at TJ up to +175°C in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 13V - Maximum continuous reverse operating voltage before leakage exceeds 0.5µA |
| VBR (min) | 14.4V @ 1mA - Ensures reliable avalanche conduction onset during overvoltage events |
| VC (max) | 21.5V @ 18.6A - Limits protected circuit voltage to safe level during 10/1000µs surge |
| PPK | 400W (10/1000µs) - Sustains high-energy transients common in automotive load-dump and EFT scenarios |
| ESD Rating | ±30kV contact & air per IEC61000-4-2 - Meets stringent industrial and automotive ESD immunity requirements |
| TJ Range | –55°C to +175°C - Supports under-hood automotive and wide-temperature industrial deployment |
| RθJS | 70°C/W - Enables thermal management on standard FR-4 with 2oz copper pad without heatsink |
Pinout & Package
Package: DO-219AA - Surface-mount, flat lead, green molded plastic (UL 94V-0), 0.016g weight, moisture sensitivity level 1. Cathode band absent confirms bi-directional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction terminals | No polarity marking required; identical clamping behavior for positive and negative transients |
| Case / Molded Body | Thermal path & mechanical anchor | Direct thermal conduction to PCB copper via cathode-side solder fillet; no internal heat slug |
Key Features
| Feature | Design Value |
|---|---|
| 400W Peak Pulse Power | Handles 10/1000µs surges up to 18.6A without degradation-critical for ISO 7637-2 pulse 5a load-dump suppression |
| ±30kV ESD Protection | Fully complies with IEC61000-4-2 Level 4, eliminating need for external ESD staging in USB 2.0/3.0 and CAN FD interfaces |
| Sub-5ns Response Time | Clamps transients before sensitive ICs experience overstress-enables protection of 100MHz+ signal lines |
| DO-219AA Footprint | 0.81–1.20mm height and 2.70–2.90mm width enable high-density placement near connectors and ports |
| Halogen/Antimony-Free | Meets JEDEC J-STD-020 MSL Level 1 and automotive "Green" standards (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| Automotive Battery Line Protection | USB 2.0 Data Line ESD Clamp |
|---|---|
Use Scenario: Protects body control module inputs from load-dump transients (ISO 7637-2 Pulse 5a) and jump-start spikes on 12V battery rails. IC Role / Device Role / Timing Role: Bi-directional TVS placed directly at connector entry point to clamp both positive and negative surges before reaching LDOs or microcontrollers. Use Value: 21.5V clamping limits downstream voltage to <22V, preventing damage to 24V-tolerant CAN transceivers and 16V-rated regulators. | Use Scenario: Shields USB D+/D− lines from human-body-model (HBM) and IEC61000-4-2 contact discharge during hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance bi-directional clamp mounted adjacent to USB receptacle to minimize stub length and preserve signal integrity. Use Value: Sub-5ns response ensures clamping occurs before 1.5ns rise-time ESD pulses propagate into USB PHY, maintaining eye diagram compliance. |
| Industrial RS-485 Transceiver Port | Smart Meter Power Input Stage |
Use Scenario: Guards half-duplex RS-485 transceivers against lightning-induced surges on long cable runs in factory automation networks. IC Role / Device Role / Timing Role: Paired TVS on A/B lines referenced to ground, leveraging symmetrical clamping to suppress differential and common-mode transients. Use Value: 400W rating sustains multiple 10/1000µs surges per IEC 61000-4-5 Level 3 (2kV line-earth), extending transceiver lifetime in harsh environments. | Use Scenario: Secures AC/DC converter input stage in utility smart meters exposed to grid switching transients and capacitor bank switching events. IC Role / Device Role / Timing Role: First-line protection ahead of bridge rectifier and bulk capacitor, absorbing energy before it reaches primary-side FETs and controllers. Use Value: 13V VRWM allows compatibility with 12V auxiliary supplies while 21.5V VC prevents overvoltage stress on 25V-rated input capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13CA | DO-214AC package; higher RθJA (100°C/W); 23.2V VC @ 17.2A | Larger footprint (4.5×2.7mm vs. 2.9×1.2mm); lower power density | Select when legacy SMA layout exists and space constraints allow larger package |
| TPSMD13C | DO-214AB package; 22.0V VC @ 18.2A; 600W PPK rating | Higher clamping margin (22.0V vs. 21.5V); wider thermal derating curve | Choose for enhanced surge margin where board area permits larger 7.1×6.2mm footprint |
Compared with SMAJ13CA and TPSMD13C, SMF4L13CA-7 delivers superior power density (400W in 2.9×1.2mm), tighter clamping (21.5V), and optimized thermal path (RθJS = 70°C/W), making it ideal for space-constrained automotive and portable electronics where footprint and thermal performance are critical.
Availability
SMF4L13CA-7 is available at Aetrix Electronics and suitable for automotive battery line protection, USB 2.0 data line ESD clamp, and industrial RS-485 transceiver port applications requiring stable component supply and AEC-Q200-aligned reliability.
Supply support for SMF4L13CA-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, specializing in high-reliability protection, power management, and signal integrity solutions for automotive, industrial, and consumer markets.
The SMF4L series belongs to Diodes' high-power surface-mount TVS portfolio, engineered specifically for AEC-Q200-compliant automotive systems and IEC61000-4-2/4-5-certified industrial equipment requiring compact, high-clamping-efficiency surge protection.
FAQ
What is the polarity configuration of SMF4L13CA-7?
SMF4L13CA-7 is a bi-directional TVS diode, confirmed by absence of cathode band marking and symmetrical electrical characteristics (identical VBR min/max and VC for both polarities). It provides equal clamping performance for positive and negative transients without requiring orientation during placement.
Does SMF4L13CA-7 meet AEC-Q200 qualification requirements?
Yes-SMF4L13CA-7 is manufactured in IATF 16949-certified facilities and qualified to JEDEC standards referenced in AEC-Q200 for high-reliability automotive applications. Full qualification documentation, including temperature cycling and humidity testing reports, is available upon request for PPAP submission.
How does the DO-219AA package affect thermal performance compared to SMA (DO-214AC)?
DO-219AA offers lower junction-to-soldering-point thermal resistance (RθJS = 70°C/W) versus SMA's typical RθJA = 100°C/W due to its shorter thermal path and optimized copper lead frame. This enables higher sustained power dissipation in dense layouts without thermal derating penalties seen in larger packages.
Can SMF4L13CA-7 replace SMF4L13A in existing designs?
Yes-SMF4L13CA-7 is the bi-directional variant of SMF4L13A (uni-directional), sharing identical VRWM (13V), VBR (14.4–15.9V), VC (21.5V), and DO-219AA packaging. The only functional difference is polarity: use SMF4L13CA-7 for AC-coupled or differential lines, SMF4L13A for DC-biased unidirectional rails.
SMF4L13CA-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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 18.6A
- 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
SMF4L13CA-7 FAQ
1.How can I place an order for SMF4L13CA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF4L13CA-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 SMF4L13CA-7 reliable?
The price and inventory of SMF4L13CA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF4L13CA-7 is usually 5 days.
3.What payment methods are accepted for SMF4L13CA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF4L13CA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF4L13CA-7?
SMF4L13CA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF4L13CA-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 SMF4L13CA-7?
For technical support, including SMF4L13CA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF4L13CA-7 requirements.
6.How does Aetrix verify that SMF4L13CA-7 is sourced from the original manufacturer or authorized distributors?
All SMF4L13CA-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 SMF4L13CA-7 meets industry standards.
7.What is the process for return or replacement of SMF4L13CA-7?
All SMF4L13CA-7 units undergo pre-shipment inspection (PSI). If there is an issue with SMF4L13CA-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 SMF4L13CA-7 part is unused and in its original packaging.
Return procedure for SMF4L13CA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF4L13CA-7 Tags
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ESD9B5.0ST5G
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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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