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Diodes Incorporated SMAJ17AQ-13-F
- Part No.:
- SMAJ17AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ17AQ-13-F.pdf
- Description:
- TVS DIODE 17VWM 27.6VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:1,664
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Product details
Overview
SMAJ17AQ-13-F from Diodes Incorporated is a unidirectional 400W automotive transient voltage suppressor (TVS) diode with 17V reverse standoff voltage, 27.6V max clamping voltage at 14.5A peak pulse current, and AEC-Q101 qualification. It protects CAN, LIN, and sensor interface circuits in engine control units and body electronics against ISO7637-2 Pulse 1/2a/3a/3b surges and ISO10605 ESD events.
For engineers reviewing the SMAJ17AQ-13-F datasheet, SMAJ17AQ-13-F pinout, SMAJ17AQ-13-F application, or SMAJ17AQ-13-F equivalent, this page delivers verified electrical parameters, automotive-grade reliability data, clamping performance under standardized surge waveforms, and direct substitution guidance for board-level surge protection design.
Technical Context
This unidirectional TVS diode operates as a shunt-clamping device triggered by voltage exceeding its 17V VRWM threshold, with breakdown occurring between 18.9V and 20.9V at 1mA test current. Its glass-passivated junction ensures stable leakage (<0.5µA at VRWM) and repeatable clamping behavior across -55°C to +175°C junction temperature range.
Designed for single-pulse transients per IEC 61000-4-5 and ISO7637-2, it sustains 400W peak pulse power (10×1000µs waveform), delivers 14.5A IPP at VC = 27.6V, and maintains 1.0W steady-state dissipation at TL = +75°C - enabling placement near high-impedance signal lines without thermal runaway risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system bus voltage margin. |
| VBR (min/max) | 18.9 V / 20.9 V - Breakdown occurs within this band at 1mA; defines turn-on consistency for surge response timing. |
| VC @ IPP | 27.6 V @ 14.5 A - Clamped voltage during 10×1000µs transient; determines maximum stress on downstream ICs. |
| PPK | 400 W - Peak pulse power handling per non-repetitive event; validates compliance with ISO7637-2 Pulse 1 (-100V) and Pulse 3a (-150V). |
| IFSM | 40 A - Surge current rating for 8.3ms half-sine wave; supports robustness against load dump and inductive switching events. |
| IR @ VRWM | <0.5 µA - Reverse leakage at rated standoff voltage; ensures negligible standby current in always-on automotive modules. |
| TJ Range | -55 °C to +175 °C - Full automotive temperature operation; enables placement in under-hood ECUs without derating. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic UL 94V-0 housing; cathode band denotes polarity on unidirectional variant; weight ≈ 0.064 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during clamping | Connected to protected line (e.g., CAN_H); conducts surge current to ground when voltage exceeds VRWM. |
| Cathode | Reference terminal | Connected to system ground or low-impedance return path; establishes clamping reference and defines unidirectional polarity. |
Key Features
| Feature | Design Value |
|---|---|
| 400W peak pulse power | Validated for ISO7637-2 Pulse 1 (-100V), Pulse 2a (+50V), and Pulse 3a (-150V) without degradation. |
| AEC-Q101 qualified | Qualified for automotive use with PPAP capability and manufacturing in IATF 16949 certified facilities. |
| Glass-passivated die | Ensures stable VBR tolerance, low IR drift over temperature, and long-term reliability in humid environments. |
| RoHS 3 & Halogen-free | Meets EU Directive 2015/863/EU; Br+Cl <1500ppm, Sb <1000ppm - compliant for global automotive supply chains. |
Applications
| Engine Control Unit (ECU) Power Input | CAN FD Transceiver Protection |
|---|---|
|
Use Scenario: 12V battery feed to microcontroller power rail subjected to load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt clamping TVS placed upstream of LDO regulator to limit transient voltage before regulation stage. Use Value: Clamps to 27.6V during 100V ISO7637-2 Pulse 1, preventing LDO overvoltage failure and preserving MCU reset integrity. |
Use Scenario: CAN_H/CAN_L lines exposed to ESD events during connector mating/unmating in vehicle infotainment systems. IC Role / Device Role / Timing Role: Unidirectional TVS on each differential line referenced to chassis ground to suppress ±30kV contact discharge per ISO10605. Use Value: Limits induced voltage to ≤27.6V within nanoseconds, protecting PHY transceivers without adding capacitance that degrades 5Mbps FD signal integrity. |
| Body Control Module (BCM) Sensor Interface | ADAS Camera Power Line |
|
Use Scenario: 5V supply to analog pressure/temperature sensors in door modules experiencing cable harness coupling transients. IC Role / Device Role / Timing Role: Local TVS at sensor connector entry point to absorb coupled energy before reaching precision ADC front-end. Use Value: Maintains <0.5µA leakage at 17V VRWM, eliminating offset error in ratiometric sensor measurements while clamping fast-rising pulses. |
Use Scenario: 12V power input to image sensor module mounted near engine bay, subject to thermal cycling and ignition noise. IC Role / Device Role / Timing Role: Primary surge suppression on main power rail prior to DC-DC converter, rated for -55°C to +175°C operation. Use Value: Operates reliably across full automotive temperature range with no derating required, ensuring camera uptime during cold cranking and hot soak conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-13-F | Non-automotive grade; lacks AEC-Q101 qualification and PPAP support; identical electrical specs. | Not approved for production automotive programs requiring change control and IATF 16949 traceability. | Select only for prototyping or non-automotive industrial applications where qualification is not mandated. |
| 1.5SMC17AQ | Higher PM(AV) = 1.5W vs. 1.0W; same VRWM, VC, and PPK; SMC package (larger footprint, higher thermal mass). | Preferred where board space allows and higher steady-state power dissipation is needed for repetitive surges. | Choose when thermal management is constrained and >1.0W continuous dissipation is required at TL = +75°C. |
Compared with SMAJ17AQ-13-F, SMAJ17A-13-F omits automotive qualification but matches all electrical parameters, while 1.5SMC17AQ trades smaller SMA footprint for greater thermal robustness in high-duty-cycle surge environments.
Availability
SMAJ17AQ-13-F is available at Aetrix Electronics and suitable for engine control units, CAN FD networks, and ADAS camera power systems requiring stable component supply with full automotive traceability and lifecycle management.
Supply support for SMAJ17AQ-13-F 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 for automotive, industrial, and consumer markets, with manufacturing certified to IATF 16949 and AEC-Q101 standards.
The SMAJ series targets automotive electronics surge protection, designed specifically to meet ISO7637-2 and ISO10605 requirements while delivering AEC-Q101 reliability in compact SMA packages.
FAQ
What is the clamping voltage of SMAJ17AQ-13-F at its rated peak pulse current?
The SMAJ17AQ-13-F clamps to a maximum of 27.6V at 14.5A peak pulse current (IPP), measured using the standardized 10×1000µs waveform per IEC 61000-4-5. This value is guaranteed across the full -55°C to +175°C operating junction temperature range and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMAJ17AQ-13-F suitable for bidirectional signal lines like RS-485 or USB?
No - SMAJ17AQ-13-F is unidirectional and must be used with correct polarity (cathode to ground). For bidirectional lines, the bi-directional variant SMAJ17CAQ-13-F is required, which provides symmetrical clamping above and below ground with no polarity constraint. Using the unidirectional version on AC-coupled or differential lines risks forward conduction and failure.
How does the AEC-Q101 qualification impact supply chain deployment of SMAJ17AQ-13-F?
AEC-Q101 qualification confirms that SMAJ17AQ-13-F has passed accelerated stress testing for automotive reliability, including HTOL, TCT, and ESD. Combined with PPAP capability and IATF 16949 manufacturing, it enables direct inclusion in Tier 1 BOMs without requalification, reduces audit overhead, and guarantees lot traceability and change notification per automotive quality protocols.
Can SMAJ17AQ-13-F replace SMAJ15AQ-13-F in an existing design?
Only if the protected circuit's maximum operating voltage is ≥17V - increasing VRWM from 15V to 17V raises the clamping initiation threshold, potentially exposing downstream components to higher transient voltages. Verify that the 2V increase does not compromise immunity margins in ISO7637-2 Pulse 3b (+100V) or ESD testing; VC increases to 27.6V from 24.4V, requiring revalidation of IC survival thresholds.
SMAJ17AQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
SMAJ17AQ-13-F FAQ
1.How can I place an order for SMAJ17AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ17AQ-13-F 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 SMAJ17AQ-13-F reliable?
The price and inventory of SMAJ17AQ-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ17AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ17AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ17AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ17AQ-13-F?
SMAJ17AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ17AQ-13-F 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 SMAJ17AQ-13-F?
For technical support, including SMAJ17AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ17AQ-13-F requirements.
6.How does Aetrix verify that SMAJ17AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ17AQ-13-F 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 SMAJ17AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ17AQ-13-F?
All SMAJ17AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ17AQ-13-F, 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 SMAJ17AQ-13-F part is unused and in its original packaging.
Return procedure for SMAJ17AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ17AQ-13-F Tags
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