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Diodes Incorporated SMBJ15CAQ-13-F
- Part No.:
- SMBJ15CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15CAQ-13-F.pdf
- Description:
- TVS DIODE 15VWM 24.4VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:5,581
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Product details
Overview
SMBJ15CAQ-13-F from Diodes Incorporated is a bi-directional 600W 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 power line protection in ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD environments.
For engineers reviewing the SMBJ15CAQ-13-F datasheet, SMBJ15CAQ-13-F pinout, SMBJ15CAQ-13-F application, or SMBJ15CAQ-13-F equivalent, this part supports critical surge immunity validation in 12V/24V automotive ECUs, body control modules, and infotainment power rails where bidirectional clamping, low leakage (<0.5µA), and IATF 16949 traceable sourcing are required.
Technical Context
This bi-directional TVS operates symmetrically across both polarities to clamp transients up to ±220V (Pulse 3a) and ±150V (Pulse 3b) without polarity dependence. Its 1.0mA breakdown test current and 15V VRWM ensure compatibility with nominal 13.5V battery systems while maintaining <0.5µA reverse leakage at rated standoff.
The device uses silicon avalanche junction technology optimized for fast response (<1ns) to 10/1000µs surges, delivering 600W peak pulse power within a thermally robust SMB package rated for -55°C to +175°C junction operation and 5W steady-state dissipation at TL=75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 10×1000µs transients per ISO7637-2 without degradation |
| Reverse Standoff Voltage | 15.0V - defines maximum continuous operating voltage before clamping onset |
| Clamping Voltage | 24.4V @ 24A - limits downstream circuit voltage during worst-case Pulse 3a (-220V) |
| Breakdown Voltage | 16.7–18.5V @ 1.0mA - ensures reliable avalanche initiation above VRWM margin |
| Leakage Current | <0.5µA @ 15V - minimizes quiescent power loss in always-on automotive modules |
| Operating Temperature | -55°C to +175°C - supports placement near engines, transmissions, and power inverters |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling, HTRB, and ESD stress |
Pinout & Package
Package: SMB (Surface-Mount Small Outline), molded plastic UL 94V-0, 3.30–3.94mm width, 5.00–5.59mm length, 2.00–2.50mm height, 0.1g mass. Moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry (reverse bias) | Accepts positive transients relative to cathode; forms one half of symmetrical clamping path |
| Cathode | Current exit (reverse bias) | Accepts negative transients relative to anode; completes bidirectional conduction loop |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of floating or AC-coupled lines without polarity constraints |
| ISO7637-2 Pulse 3a compliance | Clamps -220V transients to ≤24.4V, protecting CAN/LIN transceivers and microcontrollers |
| AEC-Q101 qualification | Validates reliability for automotive under-hood use with PPAP documentation support |
| Lead-free & halogen-free | Meets RoHS 3 and automotive green standards (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) LIN Bus |
|---|---|
Use Scenario: Protects 12V main power rail against load dump (Pulse 2a +112V) and alternator ripple-induced spikes. IC Role / Device Role / Timing Role: Primary bidirectional shunt clamp placed upstream of DC-DC converters and LDOs. Use Value: Limits rail voltage to 24.4V during 100A surge events, preventing MOSFET gate oxide failure and regulator latch-up. | Use Scenario: Shields LIN physical layer transceivers from ESD events (±30kV contact/air) and battery disconnect transients. IC Role / Device Role / Timing Role: Low-capacitance (<100pF) parallel TVS on LIN bus lines (LIN_H/L) referenced to battery ground. Use Value: Clamps ESD pulses within 1ns while adding <0.5µA leakage, preserving LIN signal integrity and sleep-mode current budget. |
| Infotainment Head Unit USB Power | ADAS Camera Power Supply |
Use Scenario: Guards 5V USB VBUS line against hot-plug surges and conducted noise from vehicle battery system. IC Role / Device Role / Timing Role: Secondary TVS after primary input filter, sized for 24A peak pulse handling. Use Value: Maintains 5V rail stability during 10×1000µs transients, avoiding USB controller reset or data corruption. | Use Scenario: Secures 12V camera module supply against ignition transients and vibration-induced arcing in rear-view systems. IC Role / Device Role / Timing Role: High-temp-rated (175°C) TVS mounted adjacent to image sensor power input. Use Value: Survives under-hood thermal cycling while clamping Pulse 1 (-150V) to safe levels for CIS interface ICs. |
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 |
|---|---|---|---|
| SMBJ15CA TR13 | Same electrical specs, but non-AEC-Q101; RoHS-compliant but not PPAP-capable | Lacks automotive change control and IATF 16949 traceability | Select only for non-automotive industrial or consumer designs requiring identical clamping |
| TPSMBS15C | Higher 1000W rating; larger SMC package; 25.5V clamping at 39.2A | Over-specified for SMB footprint-limited PCBs; requires layout rework | Choose when higher surge margin is needed and board space allows SMC footprint |
Compared with SMBJ15CAQ-13-F, SMBJ15CA TR13 omits automotive qualification and traceability, while TPSMBS15C trades compact SMB size for higher power handling in SMC-making the Q-grade part optimal for space-constrained, production-critical automotive ECUs.
Availability
SMBJ15CAQ-13-F is available at Aetrix Electronics and suitable for engine control units, body control modules, infotainment head units, and ADAS camera power supplies requiring stable component supply with full automotive compliance documentation.
Supply support for SMBJ15CAQ-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 computing markets.
The SMBJ(AQ) series is engineered specifically for AEC-Q101-compliant transient suppression in 12V/24V automotive power networks, emphasizing high-temperature reliability, ISO standard compliance, and PPAP-ready manufacturing.
FAQ
What does the 'Q' suffix signify in SMBJ15CAQ-13-F?
The 'Q' denotes AEC-Q101 qualification, confirming the device has passed rigorous automotive reliability testing-including temperature cycling, highly accelerated life testing (HALT), and ESD stress-and is manufactured in IATF 16949-certified facilities with full PPAP documentation support for automotive production programs.
Can SMBJ15CAQ-13-F replace uni-directional SMBJ15AQ-13-F in existing designs?
No-SMBJ15CAQ-13-F is bi-directional and lacks a cathode band marking, making it unsuitable as a drop-in replacement for uni-directional variants. Uni-directional parts require correct polarity orientation; using a bi-directional part may compromise clamping behavior on DC-biased lines like 12V power rails.
What is the maximum allowable ambient temperature for continuous operation?
The device operates continuously at ambient temperatures up to +125°C when mounted on a PCB with adequate copper pour; derating begins above +25°C per the 4.8W/°C curve, limiting steady-state power to ~2.5W at +75°C ambient per the PM(AV) = 5.0W rating at TL = +75°C.
How does SMBJ15CAQ-13-F perform under ISO7637-2 Pulse 3b (+150V)?
Under ISO7637-2 Pulse 3b (+150V), the device clamps the transient to ≤24.4V at 24A peak current, limiting energy dissipation to within its 600W rating. Its 1.0mA breakdown threshold ensures rapid avalanche onset before downstream components experience overvoltage stress.
SMBJ15CAQ-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:
- -
- Bidirectional Channels:
- 1
- 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
SMBJ15CAQ-13-F FAQ
1.How can I place an order for SMBJ15CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15CAQ-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 SMBJ15CAQ-13-F reliable?
The price and inventory of SMBJ15CAQ-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 SMBJ15CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ15CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15CAQ-13-F?
SMBJ15CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15CAQ-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 SMBJ15CAQ-13-F?
For technical support, including SMBJ15CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15CAQ-13-F requirements.
6.How does Aetrix verify that SMBJ15CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ15CAQ-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 SMBJ15CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ15CAQ-13-F?
All SMBJ15CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15CAQ-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 SMBJ15CAQ-13-F part is unused and in its original packaging.
Return procedure for SMBJ15CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15CAQ-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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