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Diodes Incorporated SMF4L15CA-7
- Part No.:
- SMF4L15CA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-219AA
- Datasheet:
-
SMF4L15CA-7.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:7,572
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Product details
Overview
SMF4L15CA-7 from Diodes Incorporated is a bi-directional 400W surface-mount transient voltage suppressor (TVS) with 15V working peak reverse voltage (VRWM), 16.7–18.5V breakdown voltage (VBR), and 24.4V maximum clamping voltage (VC) at 16.4A peak pulse current. It delivers ±30kV ESD protection per IEC61000-4-2 and is optimized for battery contact and automotive power line surge suppression.
For engineers reviewing the SMF4L15CA-7 datasheet, SMF4L15CA-7 pinout, SMF4L15CA-7 application, or SMF4L15CA-7 equivalent, this device is selected for high-reliability DC power rail protection where low clamping voltage, sub-5ns response time, and AEC-Q200-compatible packaging are required in space-constrained designs.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling robust protection of AC-coupled or floating signal lines and ungrounded power rails. Its DO-219AA package supports high thermal dissipation (RθJA = 96°C/W) and meets JEDEC reliability standards for automotive-grade applications.
The device exhibits fast transient response (<5.0ns from 0V to VBR), low leakage (<0.5µA at VRWM), and stable clamping performance under 10/1000µs surge waveforms-critical for safeguarding sensitive microcontrollers and CAN transceivers against load dump and ISO 7637-2 pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 15V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 16.7V / 18.5V - Breakdown initiates within this range at 1mA test current, ensuring predictable turn-on |
| VC @ IPP | 24.4V at 16.4A - Clamping voltage during 10/1000µs surge limits downstream voltage stress |
| PPK | 400W - Peak pulse power handling capability defines surge energy absorption capacity |
| ESD Rating | ±30kV air / ±30kV contact - Full IEC61000-4-2 Level 4 compliance enables direct interface with exposed connectors |
| Leakage Current | 0.5µA max at VRWM - Negligible standby power loss in always-on battery systems |
| Response Time | <5.0ns - Enables suppression of fast-rising transients before IC damage occurs |
Pinout & Package
Package: DO-219AA - ultra-compact surface-mount plastic package (2.80mm × 1.90mm × 0.60mm), halogen-free, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point (reverse polarity) | One end of symmetrical P-N junction; no cathode band marking indicates bi-directional configuration |
| Cathode | Current exit point (forward polarity) | Opposite terminal; identical electrical behavior to anode due to bi-directional structure |
Key Features
| Feature | Design Value |
|---|---|
| 400W peak pulse power | Supports high-energy surges without degradation-suitable for 12V/24V automotive load dump events |
| Bi-directional clamping | Protects AC signals and floating rails without polarity constraints-no orientation-dependent placement |
| IEC61000-4-2 ±30kV ESD | Eliminates need for external ESD diodes on USB, LIN, or sensor interfaces |
| DO-219AA footprint | Reduces PCB area by >35% vs. SMA packages while maintaining thermal performance |
| AEC-Q200 readiness | Manufactured in IATF 16949-certified facilities-enables qualification path for automotive programs |
Applications
| Automotive Body Control Module | USB-C Port Protection |
|---|---|
Use Scenario: Protecting LIN bus and power inputs in door modules exposed to battery transients and ESD. IC Role / Device Role / Timing Role: Bi-directional TVS placed at connector entry to clamp ±100V load dump spikes and ±30kV ESD events. Use Value: Prevents latch-up or gate oxide damage in local microcontrollers and transceivers without adding series impedance. | Use Scenario: Safeguarding USB-C receptacle pins against hot-plug ESD and cable-induced surges. IC Role / Device Role / Timing Role: Primary clamping element on VBUS and CC lines, responding within 5ns to limit voltage overshoot. Use Value: Maintains USB 2.0 signal integrity while meeting IEC61000-4-2 Level 4 without degrading data eye margin. |
| Industrial Battery Management System | Smart Meter Power Input |
Use Scenario: Guarding lithium-ion battery pack terminals against accidental short-circuit transients and field-service ESD. IC Role / Device Role / Timing Role: First-line overvoltage protector between cell stack and protection IC, absorbing up to 400W for 1ms. Use Value: Extends BMS IC lifetime by limiting voltage seen at analog front-end inputs to ≤24.4V during fault conditions. | Use Scenario: Securing 230VAC-derived DC supply rails in utility meters subject to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary clamping stage after MOV, suppressing residual fast transients that bypass bulk protection. Use Value: Reduces failure rate of metering SoCs by clamping sub-microsecond spikes below 25V threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA | Same VRWM/VBR/VC specs but in larger SMA package (RθJA = 110°C/W); 500W PPK rating | Better surge energy handling but 2.5× larger footprint; less suitable for dense automotive PCBs | Select when higher single-pulse energy tolerance is prioritized over board space |
| TPSMD15CA | Identical DO-219AA package; lower PPK (300W); tighter VBR tolerance (16.7–17.9V) | Lower clamping consistency under repeated surges; not qualified to AEC-Q200 | Choose for cost-sensitive industrial designs where automotive qualification is unnecessary |
Compared with SMAJ15CA and TPSMD15CA, SMF4L15CA-7 uniquely balances ultra-compact size, 400W surge capacity, and automotive-ready manufacturing-making it optimal for next-generation ECUs and portable electronics requiring both space efficiency and high-reliability surge immunity.
Availability
SMF4L15CA-7 is available at Aetrix Electronics and suitable for automotive body electronics, USB-C interface protection, and industrial battery management systems requiring stable component supply and long-term lifecycle support.
Supply support for SMF4L15CA-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 integrated circuits, specializing in high-performance, high-reliability components for automotive, industrial, and consumer markets.
The SMF4L series belongs to Diodes' transient voltage suppression portfolio, engineered specifically for compact, high-power-density surge protection in automotive and portable electronics where space, thermal performance, and ESD robustness are critical.
FAQ
What does the "CA" suffix indicate in SMF4L15CA-7?
The "CA" denotes a bi-directional configuration: the device provides symmetrical clamping for both positive and negative transients. Unlike "A"-suffixed unidirectional variants, it has no cathode band marking and protects AC-coupled or floating nodes without polarity concerns.
Is SMF4L15CA-7 qualified to AEC-Q200?
SMF4L15CA-7 is manufactured in IATF 16949-certified facilities and meets JEDEC reliability standards referenced in AEC-Q200. While not formally certified as "AEC-Q200 qualified", its process flow, testing, and packaging align with automotive change control requirements-enabling straightforward qualification for Tier 1 programs.
How does the DO-219AA package compare thermally to SMA?
DO-219AA offers RθJA = 96°C/W versus ~110°C/W for SMA, due to improved copper lead frame thermal conduction and lower junction-to-solder-point resistance (RθJS = 70°C/W). This allows higher sustained surge duty cycles in confined layouts without derating.
Can SMF4L15CA-7 replace SMF15CA in existing designs?
No-SMF15CA uses DO-214AA (SMA) packaging and has different thermal and mechanical characteristics. Though electrical specs overlap, the DO-219AA footprint, solder pad layout, and thermal profile require PCB redesign and revalidation per IPC-J-STD-001 and AEC-Q200 mechanical stress tests.
SMF4L15CA-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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 16.4A
- 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
SMF4L15CA-7 FAQ
1.How can I place an order for SMF4L15CA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF4L15CA-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 SMF4L15CA-7 reliable?
The price and inventory of SMF4L15CA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF4L15CA-7 is usually 5 days.
3.What payment methods are accepted for SMF4L15CA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF4L15CA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF4L15CA-7?
SMF4L15CA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF4L15CA-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 SMF4L15CA-7?
For technical support, including SMF4L15CA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF4L15CA-7 requirements.
6.How does Aetrix verify that SMF4L15CA-7 is sourced from the original manufacturer or authorized distributors?
All SMF4L15CA-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 SMF4L15CA-7 meets industry standards.
7.What is the process for return or replacement of SMF4L15CA-7?
All SMF4L15CA-7 units undergo pre-shipment inspection (PSI). If there is an issue with SMF4L15CA-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 SMF4L15CA-7 part is unused and in its original packaging.
Return procedure for SMF4L15CA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF4L15CA-7 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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