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Diodes Incorporated SMAJ17CAQ-13-F
- Part No.:
- SMAJ17CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ17CAQ-13-F.pdf
- Description:
- TVS DIODE 17VWM 27.6VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:3,522
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Product details
Overview
SMAJ17CAQ-13-F from Diodes Incorporated is a bi-directional 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 for under-hood engine control units, infotainment power rails, and CAN bus protection against ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD events.
For engineers reviewing the SMAJ17CAQ-13-F datasheet, SMAJ17CAQ-13-F pinout, SMAJ17CAQ-13-F application, or SMAJ17CAQ-13-F equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, IPP capability under 10/1000μs surge, bi-directional symmetry for AC-coupled lines, and IATF 16949 manufacturing traceability for automotive PPAP submission.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, delivering consistent 27.6V clamping at 14.5A (10×1000μs waveform) with <0.5μA reverse leakage at 17V VRWM. Its glass-passivated junction ensures stable breakdown behavior over -55°C to +175°C junction temperature range.
Designed for ISO-compliant automotive surge immunity, it withstands −100V (Pulse 1), +50V (Pulse 2a), −150V (Pulse 3a), and +100V (Pulse 3b) transients per ISO7637-2 while meeting 30kV air/contact ESD per ISO10605 - all without polarity dependency due to bi-directional architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains single 10×1000μs surges up to 14.5A without thermal runaway |
| Reverse Standoff Voltage | 17V - sets minimum operating voltage threshold before clamping activation |
| Max Clamping Voltage | 27.6V @ 14.5A - defines worst-case voltage seen by downstream circuit during surge |
| Breakdown Voltage | 18.9–20.9V @ 1mA - ensures reliable turn-on margin above VRWM for noise immunity |
| Leakage Current | <0.5μA @ 17V - negligible standby power loss in always-on vehicle modules |
| Operating Temperature | −55°C to +175°C - supports placement near engines, transmissions, and power inverters |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic UL 94V-0 housing; cathode band omitted (bi-directional device); 0.064g mass; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Conducts surge energy during negative transients; symmetrical with Cathode |
| Cathode | Transient current entry (positive polarity) | Conducts surge energy during positive transients; symmetrical with Anode |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled lines (e.g., CAN H/L, LIN, audio) without polarity concerns |
| AEC-Q101 qualification | Validated reliability for automotive under-hood and chassis applications requiring PPAP documentation |
| Glass-passivated die | Ensures stable VBR and low leakage across temperature and lifetime stress conditions |
| Lead-free & halogen-free | Meets RoHS 3 and automotive green standards (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| Engine Control Unit (ECU) Power Input | CAN Bus Transceiver Protection |
|---|---|
Use Scenario: 12V battery rail in gasoline/diesel ECUs exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary surge clamp on main power input before LDOs and microcontrollers. Use Value: Limits transient voltage to ≤27.6V, preventing latch-up or gate oxide damage in 3.3V/5V logic supplies. |
Use Scenario: Differential signal lines of high-speed CAN FD transceivers in body control modules. IC Role / Device Role / Timing Role: Bi-directional line protector placed directly at connector interface. Use Value: Maintains signal integrity by clamping ±30kV ESD without asymmetry-induced common-mode shift. |
| Infotainment System USB Power | ADAS Camera Power Rail |
Use Scenario: 5V USB charging port in head unit subjected to hot-plug surges and cable coupling. IC Role / Device Role / Timing Role: Secondary overvoltage guard after primary DC-DC converter output. Use Value: Absorbs 400W pulses without derating at +85°C ambient, enabling compact layout near connectors. |
Use Scenario: 12V supply to 77GHz radar camera modules mounted behind bumpers. IC Role / Device Role / Timing Role: First-line defense against ISO7637-2 Pulse 3b (+100V) induced by nearby solenoid switching. Use Value: Survives repeated 14.5A surges with <1% parameter drift over 1000 cycles per AEC-Q101 stress profile. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-Q | Uni-directional; same VRWM/clamp but asymmetric conduction (cathode-banded) | Requires correct polarity placement; unsuitable for AC-coupled lines like CAN | Select only when protecting DC rails with known polarity and space-constrained layouts |
| TPSM8-17C | Same SMA package; 400W rating; 28.5V clamping @ 14.2A; lower IR (0.2μA @ 17V) | Optimized for ultra-low leakage in always-on telematics modules | Prefer when system-level sleep current budget is <10μA and clamping margin allows 28.5V |
Compared with SMAJ17A-Q, SMAJ17CAQ-13-F enables polarity-agnostic placement critical for differential buses; versus TPSM8-17C, it trades 0.9V higher clamping for broader automotive qualification coverage and established PPAP history.
Availability
SMAJ17CAQ-13-F is available at Aetrix Electronics and suitable for engine control units, CAN bus interfaces, and ADAS camera power rails requiring stable component supply with full automotive change control and traceable lot history.
Supply support for SMAJ17CAQ-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 manufacturer specializing in discrete, analog, and mixed-signal solutions with focus on automotive, industrial, and computing markets.
This device belongs to the SMAJ-AQ automotive TVS family, engineered specifically for ISO7637-2 and ISO10605 compliance in harsh-temperature vehicle subsystems with zero-defect manufacturing requirements.
FAQ
What does the 'C' suffix in SMAJ17CAQ-13-F signify?
The 'C' denotes bi-directional configuration, meaning the device clamps symmetrically for both positive and negative transients - unlike uni-directional versions (e.g., SMAJ17AQ-13-F) that require correct anode/cathode orientation. This eliminates polarity installation errors in differential signal protection.
Is SMAJ17CAQ-13-F compliant with AEC-Q101 Rev D?
Yes - it is fully qualified to AEC-Q101 Rev D, including stress testing for temperature cycling, high-temperature operating life, and ESD (HBM ≥8kV, CDM ≥1kV). Full qualification reports and PPAP documentation are available upon request for automotive program releases.
How does its 27.6V clamping voltage impact 12V automotive systems?
At 27.6V clamping, it safely protects 24V-rated components (e.g., CAN transceivers, LIN drivers) during ISO7637-2 Pulse 1 (−100V) and Pulse 3b (+100V) events. The margin between 27.6V and typical 36V absolute maximum ratings provides 8.4V design headroom for system-level voltage overshoot.
Can this TVS be used in parallel for higher surge handling?
No - paralleling SMAJ17CAQ-13-F devices is not recommended due to mismatched dynamic impedance causing current imbalance. For >400W requirements, select higher-power packages (e.g., SMBJ17CA) or verify matched-bin devices with <5% VC tolerance per Diodes' application note AN-AB12.
SMAJ17CAQ-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:
- -
- Bidirectional Channels:
- 1
- 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
SMAJ17CAQ-13-F FAQ
1.How can I place an order for SMAJ17CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ17CAQ-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 SMAJ17CAQ-13-F reliable?
The price and inventory of SMAJ17CAQ-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 SMAJ17CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ17CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ17CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ17CAQ-13-F?
SMAJ17CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ17CAQ-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 SMAJ17CAQ-13-F?
For technical support, including SMAJ17CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ17CAQ-13-F requirements.
6.How does Aetrix verify that SMAJ17CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ17CAQ-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 SMAJ17CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ17CAQ-13-F?
All SMAJ17CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ17CAQ-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 SMAJ17CAQ-13-F part is unused and in its original packaging.
Return procedure for SMAJ17CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ17CAQ-13-F 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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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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