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Diodes Incorporated SMAJ15AQ-13-F
- Part No.:
- SMAJ15AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ15AQ-13-F.pdf
- Description:
- TVS DIODE 15VWM 24.4VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:23,117
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Product details
Overview
SMAJ15AQ-13-F from Diodes Incorporated is a unidirectional 400W automotive transient voltage suppressor (TVS) diode with 15V reverse standoff voltage, 24.4V max clamping voltage at 16.4A peak pulse current, and AEC-Q101 qualification. It protects CAN bus transceivers, LIN interfaces, and body control modules against ISO7637-2 Pulse 1 (−100V), Pulse 2a (+50V), and ISO10605 ESD (±30kV).
For engineers reviewing the SMAJ15AQ-13-F datasheet, SMAJ15AQ-13-F pinout, SMAJ15AQ-13-F application, or SMAJ15AQ-13-F equivalent, this device serves as a primary surge protection component in 12V automotive power domains where clamping response time, low leakage (<0.5µA @ 15V), and IATF 16949 traceable manufacturing are critical selection criteria.
Technical Context
This unidirectional TVS diode operates as a fast-acting shunt clamp during transients, triggering at ≥16.7V breakdown (VBR) and limiting line voltage to ≤24.4V (VC) under 10×1000µs waveform stress. Its glass-passivated junction ensures stable leakage performance across −55°C to +175°C junction temperature range.
Designed for placement directly at connector entry points or IC supply pins, it handles 40A non-repetitive forward surge (IFSM, 8.3ms half-sine) and dissipates 1.0W steady-state power at 75°C lead temperature. Polarity is defined by cathode band marking per JEDEC TO-277 outline.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - Sustains single 10×1000µs surges without failure in automotive load-dump or inductive switching events. |
| Reverse Standoff Voltage (VRWM) | 15V - Blocks normal 12V system operation while remaining fully inactive below threshold. |
| Breakdown Voltage (VBR) | 16.7–18.5V @ 1.0mA - Ensures reliable turn-on margin above nominal rail voltage with tight tolerance. |
| Clamping Voltage (VC) | 24.4V @ 16.4A - Limits downstream IC stress to safe levels during ISO7637-2 Pulse 1/2a/3a/3b transients. |
| Leakage Current (IR) | <0.5µA @ 15V - Prevents battery drain in always-on automotive modules such as telematics or alarm systems. |
| Operating Temperature | −55°C to +175°C - Supports under-hood placement near ECUs, sensors, and power distribution units. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic UL 94V-0 housing; weight ≈ 0.064g; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; forms shunt path during overvoltage event. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., CAN_H, LIN, 12V rail); marked with visible cathode band. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use with PPAP capability and IATF 16949 certified manufacturing. |
| Glass-passivated die | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure. |
| Lead-free & halogen-free | Meets RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb). |
| ISO7637-2 & ISO10605 compliant | Rated for −100V Pulse 1, +50V Pulse 2a, ±150V/±100V Pulse 3a/3b, and ±30kV ESD contact/air discharge. |
Applications
| Automotive Body Control Module (BCM) | Automotive Infotainment Power Rail |
|---|---|
Use Scenario: Protects 12V input to BCM microcontroller and peripheral drivers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between fused battery feed and local LDO input. Use Value: Clamps transients to 24.4V, preventing latch-up or permanent damage to 3.3V/5V logic supplies downstream. |
Use Scenario: Shields USB-C PD port and display power inputs in head unit against hot-plug surges and ESD. IC Role / Device Role / Timing Role: Primary front-end protection before DC-DC converters and USB interface ICs. Use Value: Sub-µA leakage preserves standby current budget; 400W rating absorbs repeated 10×1000µs pulses without degradation. |
| Automotive CAN FD Transceiver Interface | Automotive LIN Bus Node |
Use Scenario: Installed on CAN_H/CAN_L lines near connector to suppress ESD and coupled noise from adjacent harnesses. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS (cathode to CAN_H, anode to ground) with fast response <1ns. Use Value: Maintains signal integrity up to 5Mbps CAN FD by avoiding excessive parasitic capacitance while clamping to safe voltage. |
Use Scenario: Secures LIN slave node power and data lines against battery reversal and ignition-induced spikes. IC Role / Device Role / Timing Role: Cathode tied to LIN bus, anode grounded-provides bidirectional protection when paired with reverse diode. Use Value: Enables robust 12V-to-12V LIN communication in door modules and seat controllers with minimal BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-13-F | No AEC-Q101 qualification; standard industrial grade; same electrical specs and package. | Not approved for automotive production; suitable only for prototyping or non-safety-critical industrial use. | Select only if AEC-Q101 compliance and PPAP documentation are not required. |
| SMCJ15A-Q | Higher 1500W peak power; DO-214AB (SMC) package; larger footprint and thermal mass. | Better suited for high-energy load dump in main battery feeds; incompatible with SMA PCB layout. | Choose when surge energy exceeds 400W or board space allows SMC footprint. |
Compared with SMAJ15A-13-F, SMAJ15AQ-13-F adds automotive change control, PPAP support, and IATF 16949 traceability-critical for Tier 1 production. Versus SMCJ15A-Q, it trades peak power for compact SMA size and lower system-level cost in distributed node protection.
Availability
SMAJ15AQ-13-F is available at Aetrix Electronics and suitable for automotive body electronics, infotainment power management, and CAN/LIN bus protection requiring stable component supply across multi-year vehicle production cycles.
Supply support for SMAJ15AQ-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 for automotive, industrial, and consumer markets.
SMAJxxAQ series belongs to Diodes' AEC-Q101-qualified automotive TVS portfolio, engineered specifically for ISO7637-2 and ISO10605 compliance in harsh-temperature vehicle subsystems.
FAQ
What is the clamping voltage of SMAJ15AQ-13-F at its rated peak pulse current?
The clamping voltage (VC) is 24.4V measured at 16.4A peak pulse current using the standardized 10×1000µs waveform. This value is guaranteed across the full operating temperature range and defines the maximum voltage seen by downstream circuitry during surge events.
Is SMAJ15AQ-13-F compatible with lead-free reflow soldering processes?
Yes-SMAJ15AQ-13-F features matte tin lead-free plating and is qualified for standard Pb-free reflow profiles per JEDEC J-STD-020. Its moisture sensitivity level is Grade 1, eliminating bake requirements prior to assembly.
How does the unidirectional configuration affect circuit placement versus a bidirectional part?
Unidirectional SMAJ15AQ-13-F must be oriented with cathode toward the protected line and anode to ground. It cannot suppress negative-going transients on AC-coupled or floating lines-unlike bidirectional variants which require no polarity alignment but exhibit higher leakage above 10V VRWM.
Does SMAJ15AQ-13-F meet OEM-specific surge test requirements beyond ISO standards?
Yes-its 400W rating, 40A IFSM, and validated performance under ISO7637-2 Pulse 1/2a/3a/3b make it suitable for Tier 1 OEM tests including GM W317728, Ford ES-XW7T-1A278-AC, and VW 80300, provided layout follows Diodes' recommended pad dimensions and thermal relief.
SMAJ15AQ-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):
- 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 ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
SMAJ15AQ-13-F FAQ
1.How can I place an order for SMAJ15AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ15AQ-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 SMAJ15AQ-13-F reliable?
The price and inventory of SMAJ15AQ-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 SMAJ15AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ15AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ15AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ15AQ-13-F?
SMAJ15AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ15AQ-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 SMAJ15AQ-13-F?
For technical support, including SMAJ15AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ15AQ-13-F requirements.
6.How does Aetrix verify that SMAJ15AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ15AQ-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 SMAJ15AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ15AQ-13-F?
All SMAJ15AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ15AQ-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 SMAJ15AQ-13-F part is unused and in its original packaging.
Return procedure for SMAJ15AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ15AQ-13-F Tags
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Diodes Incorporated
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