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Diodes Incorporated SMBJ15AQ-13-F
- Part No.:
- SMBJ15AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15AQ-13-F.pdf
- Description:
- TVS DIODE 15VWM 24.4VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:1,270
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Product details
Overview
SMBJ15AQ-13-F from Diodes Incorporated is a unidirectional 600W surface-mount automotive transient voltage suppressor (TVS) diode with 15V reverse standoff voltage, 24.4V max clamping voltage at 24A peak pulse current, and AEC-Q101 qualification for under-hood electronics protection against ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD events.
For engineers reviewing the SMBJ15AQ-13-F datasheet, SMBJ15AQ-13-F pinout, SMBJ15AQ-13-F application, or SMBJ15AQ-13-F equivalent, this part supports critical automotive power rail surge suppression where precise clamping, low leakage (<0.5µA), and IATF 16949-manufactured reliability are required.
Technical Context
This TVS diode operates as a unidirectional shunt protector in parallel with sensitive loads, triggering when transient voltage exceeds 16.7V (min breakdown) and clamping to ≤24.4V within nanoseconds. Its 100A peak surge rating (8.3ms half-sine) and 5W steady-state dissipation enable robust handling of repetitive load dump and inductive switching transients.
Designed for automotive 12V systems, it features a 1.0mA test current for VBR, 0.5µA max reverse leakage at 15V, and thermal operation from –55°C to +175°C junction temperature - validated per AEC-Q101 stress tests including HTGB, HTRB, and TCT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 10×1000µs transients without failure in automotive load dump scenarios |
| Reverse Standoff Voltage (VRWM) | 15.0V - blocks normal 12V system operation while allowing margin for battery ripple |
| Breakdown Voltage (VBR) | 16.7–18.5V @ 1.0mA - ensures reliable turn-on before downstream IC damage thresholds |
| Max Clamping Voltage (VC) | 24.4V @ 24.0A - limits voltage seen by protected MCU or sensor during ISO7637-2 Pulse 3b (+150V) |
| Reverse Leakage (IR) | ≤0.5µA @ 15V - prevents parasitic drain in always-on vehicle modules |
| Operating Temperature | –55°C to +175°C - qualified for engine control units, transmission controllers, and ADAS sensors |
| AEC-Q101 Qualified | Yes - passed stress testing for automotive-grade reliability including temperature cycling and high-temp bias |
Pinout & Package
Package: SMB (DO-214AA), surface-mount plastic case with matte tin-plated terminals, UL 94V-0 rated, moisture sensitivity level 1, weight ≈0.1g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; defines unidirectional conduction direction |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12V rail); carries full transient current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| 600W Peak Pulse Power | Enables single-event suppression of 150V/100A transients per ISO7637-2 Pulse 1 without degradation |
| 24.4V Clamping at 24A | Keeps protected 3.3V/5V logic rails below absolute maximum ratings during worst-case surges |
| AEC-Q101 Qualification | Validates long-term reliability in automotive environments with thermal cycling, humidity, and vibration stress |
| Lead-Free & Halogen-Free | Meets RoHS 3 and automotive green standards (<900ppm Br+Cl, <1000ppm Sb) for eco-compliant production |
| SMB Package Footprint | Standardized 3.94×5.59mm outline enables drop-in replacement and automated assembly on high-volume PCBs |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) CAN Bus Lines |
|---|---|
Use Scenario: Protects 12V supply rail of gasoline/diesel engine ECUs from alternator load dump and starter motor kickback. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery feed and DC-DC converter input. Use Value: Clamps 150V transients to ≤24.4V within <1ns, preventing latch-up or burnout of upstream PMICs. |
Use Scenario: Shields high-speed CAN FD transceivers from coupled transients induced by nearby solenoid switching. IC Role / Device Role / Timing Role: Low-capacitance (≈100pF) unidirectional TVS on CAN_H/CAN_L differential pair. Use Value: Maintains signal integrity with <0.5µA leakage while meeting ISO10605 ±30kV ESD immunity requirements. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Electric Power Steering (EPS) Motor Driver |
Use Scenario: Safeguards 5V imaging sensor power supply in front-facing ADAS cameras exposed to ignition noise and EMI. IC Role / Device Role / Timing Role: Secondary TVS stage after primary LC filter, placed adjacent to image sensor PMIC. Use Value: Delivers 175°C operating capability for under-hood camera housings while limiting voltage overshoot to <25V. |
Use Scenario: Suppresses inductive kickback from 12V brushed/brushless EPS motor drivers during PWM commutation. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor H-bridge supply rail to clamp flyback energy. Use Value: Withstands 100A surge current (8.3ms) without parametric shift, ensuring steering assist continuity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-13-F | No AEC-Q101 qualification; standard industrial grade only | Not approved for automotive production; suitable for non-safety-critical prototypes or aftermarket modules | Select only if AEC-Q101 compliance is not required and cost is prioritized over qualification traceability |
| SMCJ15A-Q | Higher 1500W peak power; larger SMC package (7.11×6.22mm) | Used where higher surge margin is needed (e.g., commercial vehicle 24V systems), but requires PCB redesign | Choose when system-level surge testing exceeds 600W requirements or when thermal mass must be increased |
Compared with SMBJ15A-13-F, SMBJ15AQ-13-F adds mandatory AEC-Q101 validation and PPAP documentation; versus SMCJ15A-Q, it trades 2.5× peak power for 40% smaller footprint and identical clamping performance at 15V standoff.
Availability
SMBJ15AQ-13-F is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera power supplies, and electric power steering systems requiring stable component supply across multi-year automotive production cycles.
Supply support for SMBJ15AQ-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets with IATF 16949-certified facilities.
The SMBJ(AQ) series targets automotive power rail protection, delivering AEC-Q101-qualified TVS diodes optimized for ISO7637-2 and ISO10605 compliance in space-constrained under-hood applications.
FAQ
What is the polarity configuration of SMBJ15AQ-13-F?
SMBJ15AQ-13-F is a unidirectional TVS diode with cathode band marking indicating the high-side terminal. It conducts only during positive transients on the cathode relative to anode, making it suitable for DC power rail protection where reverse voltage is not expected.
Does SMBJ15AQ-13-F meet ISO7637-2 Pulse 3b requirements?
Yes - its 24.4V clamping voltage at 24A and 600W peak power rating directly address ISO7637-2 Pulse 3b (+150V, 50Ω source impedance), limiting protected circuit voltage to safe levels for 5V/3.3V automotive microcontrollers and sensors.
Can SMBJ15AQ-13-F replace SMBJ15A-13-F in automotive production?
Yes, with full qualification benefit: SMBJ15AQ-13-F is AEC-Q101 qualified, PPAP-capable, and manufactured in IATF 16949 facilities, whereas SMBJ15A-13-F lacks automotive-specific stress testing and documentation - required for Tier 1 supplier approvals.
What is the thermal derating behavior above +25°C ambient?
Its peak pulse power derates linearly at 4.8W/°C above +25°C ambient, and steady-state power drops to 5.0W at +75°C lead temperature. Full 600W rating applies only at TA = +25°C with proper PCB copper pour and thermal vias per Diodes' recommended pad layout.
SMBJ15AQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- 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):
- 24A
- Power - Peak Pulse:
- 600W
- 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:
- SMB
SMBJ15AQ-13-F FAQ
1.How can I place an order for SMBJ15AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15AQ-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 SMBJ15AQ-13-F reliable?
The price and inventory of SMBJ15AQ-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 SMBJ15AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ15AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15AQ-13-F?
SMBJ15AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15AQ-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 SMBJ15AQ-13-F?
For technical support, including SMBJ15AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15AQ-13-F requirements.
6.How does Aetrix verify that SMBJ15AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ15AQ-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 SMBJ15AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ15AQ-13-F?
All SMBJ15AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15AQ-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 SMBJ15AQ-13-F part is unused and in its original packaging.
Return procedure for SMBJ15AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15AQ-13-F 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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