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Diodes Incorporated SMF4L200AQ-7
- Part No.:
- SMF4L200AQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-219AA
- Datasheet:
-
SMF4L200AQ-7.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:6,852
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Product details
Overview
SMF4L200AQ-7 from Diodes Incorporated is a unidirectional 200V standoff transient voltage suppressor (TVS) in DO-219AA package, rated for 400W peak pulse power (10/1000µs), 324V max clamping voltage at 1.2A surge current, and AEC-Q101 qualified for automotive battery contact protection.
For engineers reviewing the SMF4L200AQ-7 datasheet, SMF4L200AQ-7 pinout, SMF4L200AQ-7 application, or SMF4L200AQ-7 equivalent, this device is selected for high-reliability DC power rail surge suppression where low leakage (<1.2µA at 200V), fast response (<1.0ns), and IATF 16949-manufactured consistency are critical.
Technical Context
This TVS diode operates as a unidirectional clamp between anode and cathode terminals, activating when reverse voltage exceeds 224V (min breakdown) to divert transients up to 400W while limiting voltage to ≤324V. Its junction capacitance is unspecified but optimized for low parasitic impact on 12V–48V automotive power nets.
Designed for single-pulse transient suppression per IEC 61000-4-2 (±30kV air/contact ESD), it sustains 40A non-repetitive forward surge (8.3ms half-sine) and maintains <1.2µA reverse leakage at VRWM = 200V, enabling use in always-on battery-supplied systems without excessive quiescent drain.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 200 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected circuit DC rail. |
| Breakdown Voltage (VBR min) | 224 V - Minimum voltage at which device enters avalanche conduction; ensures reliable triggering above normal operating margin. |
| Clamping Voltage (VC max) | 324 V at 1.2 A - Peak voltage seen by downstream circuit during worst-case 10/1000µs transient; defines maximum stress on protected ICs. |
| Peak Pulse Power | 400 W (10/1000µs) - Energy-handling capacity for standardized surge waveform; sufficient for ISO 7637-2 Pulse 1/2a/5a in 24V systems. |
| ESD Rating | ±30 kV (IEC 61000-4-2, air & contact) - Confirmed immunity to human-body-model surges; eliminates need for external ESD staging in connector interfaces. |
| Leakage Current | 1.2 µA at 200 V - Ultra-low standby current enabling use on always-powered vehicle modules without battery drain concerns. |
| AEC-Q101 Qualified | Yes - Validated for automotive underhood and cabin applications including battery management, body control, and infotainment power inputs. |
Pinout & Package
Package: DO-219AA surface-mount molded plastic case (UL 94V-0), 1.90 mm × 2.80 mm footprint, 0.60 mm typical lead length, cathode band marking for unidirectional polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to system ground or low-side return path; must be routed with low-inductance trace for effective clamping. |
| Cathode | Current exit terminal during reverse avalanche | Connected to protected line (e.g., battery+); cathode band identifies this terminal visually and on PCB silkscreen. |
Key Features
| Feature | Design Value |
|---|---|
| 400W peak pulse rating | Enables robust protection against load dump and inductive switching transients in 24V commercial vehicle systems. |
| Fast response time | <1.0 ns turn-on ensures clamping initiates before sensitive downstream components experience overvoltage stress. |
| AEC-Q101 qualification | Validated reliability for automotive environments including temperature cycling (-55°C to +175°C) and mechanical shock. |
| Halogen- and antimony-free | Meets automotive "Green" requirements (<900 ppm Br/Cl, <1000 ppm Sb); supports OEM sustainability compliance reporting. |
| DO-219AA low-profile package | 0.38 mm typical height enables placement in space-constrained locations near connectors or fuse boxes. |
Applications
| Battery Management Systems | Automotive Infotainment Power Input |
|---|---|
|
Use Scenario: Protection of 12V/24V battery monitor ICs and fuel gauge sensors against jump-start spikes and alternator load dump. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery+ and ground, clamping transients before they reach analog front-end or MCU supply pins. Use Value: Prevents latch-up or permanent damage to precision ADCs and reference circuits operating at ±0.1% accuracy tolerance. |
Use Scenario: Surge suppression on USB-C PD or 12V auxiliary input of head unit power stage exposed to hot-plug events and cable ESD. IC Role / Device Role / Timing Role: Primary clamping device on main DC input rail, coordinated with upstream fuse and downstream LDOs. Use Value: Maintains uninterrupted operation during ±30kV ESD strikes without requiring system reset or firmware recovery. |
| Body Control Module (BCM) Power Rail | Telematics Control Unit (TCU) CAN Power Supply |
|
Use Scenario: Guarding microcontroller VDD and LIN transceiver rails against ignition noise and relay coil flyback in door module PCBs. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5V/3.3V local regulator input, activated only during >224V transients. Use Value: Eliminates need for redundant RC snubbers or larger-capacitor filtering, reducing BOM count and board area. |
Use Scenario: Protecting isolated DC-DC converter primary side feeding CAN FD transceivers in cellular-connected TCU modules. IC Role / Device Role / Timing Role: First-line defense on 12V input before transformer isolation, absorbing ISO 7637-2 Pulse 5a energy. Use Value: Ensures CAN bus remains operational after 100V/50ms load dump events without communication dropout or node reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ200A | Same 200V VRWM, but SMA package (larger footprint, higher RθJA = 125°C/W vs. 96°C/W), 400W rating, no AEC-Q101 certification | Not qualified for automotive production; suitable for industrial prototypes or cost-sensitive non-automotive designs | Select if AEC-Q101 is not required and DO-219AA height constraint is relaxed. |
| SMF4L200A | Identical electrical specs and DO-219AA package, but lacks AQ suffix - not AEC-Q101 qualified, not PPAP capable, manufactured outside IATF 16949 facility | Cannot be used in Tier 1 automotive BOMs requiring change control and process validation | Choose only for non-automotive applications where full automotive traceability is unnecessary. |
Compared with SMAJ200A and SMF4L200A, SMF4L200AQ-7 delivers verified automotive-grade reliability via AEC-Q101 testing, tighter thermal resistance, and documented IATF 16949 manufacturing - essential for safety-critical power rail protection where field failure risk must be minimized.
Availability
SMF4L200AQ-7 is available at Aetrix Electronics and suitable for automotive battery management, telematics power conditioning, and body control module designs requiring stable component supply across multi-year vehicle production cycles.
Supply support for SMF4L200AQ-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers in Asia, Europe, and the U.S., and manufacturing in IATF 16949-certified facilities.
The SMF4L series belongs to Diodes' AEC-Q101-qualified TVS portfolio, engineered specifically for automotive power line protection where high surge capability, low leakage, and zero-defect manufacturing are mandatory.
FAQ
What is the maximum clamping voltage for SMF4L200AQ-7 at its rated surge current?
The maximum clamping voltage (VC) is 324 V at 1.2 A peak pulse current (10/1000 µs waveform), measured per JEDEC standards. This value defines the upper voltage limit imposed on protected circuitry during transient events and is validated across temperature range -55°C to +175°C.
Is SMF4L200AQ-7 suitable for bidirectional signal line protection?
No - SMF4L200AQ-7 is unidirectional, indicated by the absence of "C" in its part number and presence of cathode band marking. For bidirectional protection (e.g., data lines), use SMF4L200CAQ-7, which has symmetrical clamping in both polarities and double the leakage current specification.
How does the DO-219AA package improve thermal performance over SMA or SMB?
DO-219AA offers lower junction-to-ambient thermal resistance (RθJA = 96°C/W vs. 125°C/W for SMAJ) due to its copper alloy leadframe and optimized mold compound. This allows sustained 1.0 W steady-state dissipation on standard FR-4 PCBs and improves reliability under repeated surge conditions.
Does SMF4L200AQ-7 require derating for operation above +25°C ambient?
Yes - peak pulse power must be linearly derated above +25°C per Figure 1 in DS43393 Rev. 3-2, reaching 50% of 400W at +100°C ambient. Derating ensures safe junction temperature limits are maintained during repetitive surge events in under-hood automotive environments.
SMF4L200AQ-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 200V
- Voltage - Breakdown (Min):
- 224V
- Voltage - Clamping (Max) @ Ipp:
- 324V
- Current - Peak Pulse (10/1000µs):
- 1.2A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AA
SMF4L200AQ-7 FAQ
1.How can I place an order for SMF4L200AQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF4L200AQ-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 SMF4L200AQ-7 reliable?
The price and inventory of SMF4L200AQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF4L200AQ-7 is usually 5 days.
3.What payment methods are accepted for SMF4L200AQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF4L200AQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF4L200AQ-7?
SMF4L200AQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF4L200AQ-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 SMF4L200AQ-7?
For technical support, including SMF4L200AQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF4L200AQ-7 requirements.
6.How does Aetrix verify that SMF4L200AQ-7 is sourced from the original manufacturer or authorized distributors?
All SMF4L200AQ-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 SMF4L200AQ-7 meets industry standards.
7.What is the process for return or replacement of SMF4L200AQ-7?
All SMF4L200AQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with SMF4L200AQ-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 SMF4L200AQ-7 part is unused and in its original packaging.
Return procedure for SMF4L200AQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF4L200AQ-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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onsemi
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Diodes Incorporated
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Diodes Incorporated
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