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Diodes Incorporated SMBJ11AQ-13-F
- Part No.:
- SMBJ11AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11AQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:2,171
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Product details
Overview
SMBJ11AQ-13-F from Diodes Incorporated is a unidirectional 600W surface-mount automotive transient voltage suppressor (TVS) diode with 11.0V reverse standoff voltage, 12.2–13.5V breakdown voltage at 1.0mA, and 18.2V max clamping voltage at 33.0A peak pulse current. It protects CAN, LIN, and sensor interfaces in 12V automotive power domains against ISO7637-2 Pulse 1 (−150V), Pulse 2a (+112V), and ISO10605 ESD (±30kV).
For engineers reviewing the SMBJ11AQ-13-F datasheet, SMBJ11AQ-13-F pinout, SMBJ11AQ-13-F application, or SMBJ11AQ-13-F equivalent, this part is selected for AEC-Q101-compliant surge protection where precise clamping voltage, low leakage (<0.5µA @ 11V), and IATF 16949-manufactured traceability are required in engine control units, body electronics, and ADAS sensor modules.
Technical Context
This TVS diode operates as a unidirectional clamping device in parallel with protected circuitry, conducting only during negative transients exceeding its breakdown threshold. Its 18.2V clamping voltage limits downstream IC stress during ISO7637-2 Pulse 1 (−150V) and Pulse 3a (−220V) events while maintaining <0.5µA reverse leakage at VRWM = 11.0V.
Designed for automotive 12V systems, it features a 600W non-repetitive peak pulse power rating per 10×1000µs waveform, thermal derating to 4.8W/°C above +25°C ambient, and operation across −55°C to +175°C junction temperature-enabling placement near high-temperature ECUs without performance loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 11.0 V - Maximum continuous DC or RMS voltage before significant conduction begins; sets operating margin above 12V nominal battery rail. |
| Breakdown Voltage (VBR) | 12.2–13.5 V @ 1.0 mA - Confirmed avalanche onset range; ensures reliable triggering before downstream IC damage thresholds. |
| Max Clamping Voltage (VC) | 18.2 V @ 33.0 A - Peak voltage seen by protected circuit during 10×1000µs surge; stays below 20V logic supply tolerance. |
| Peak Pulse Power (PPK) | 600 W - Sustains single 10×1000µs transients per ISO7637-2 without failure; enables robust front-end protection in infotainment head units. |
| Reverse Leakage (IR) | <0.5 µA @ 11.0 V - Negligible standby current draw; avoids battery drain in always-on vehicle networks (e.g., CAN wake-up lines). |
| Operating Temperature | −55°C to +175°C - Validated for under-hood placement in transmission control modules and engine management systems. |
| AEC-Q101 Qualified | Yes - Certified for automotive use with PPAP capability and full IATF 16949 manufacturing traceability. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic body with UL 94V-0 flammability rating; moisture sensitivity level 1 per J-STD-020; 0.1g weight; matte tin-plated terminals solderable per MIL-STD-202, Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during reverse-biased surge | Connected to protected line (e.g., CAN_H); conducts when transient exceeds VRWM. |
| Cathode | Current exit during reverse-biased surge | Connected to ground plane; provides low-impedance path to shunt surge energy away from ICs. |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse power | Handles ISO7637-2 Pulse 1 (−150V) and Pulse 3a (−220V) without degradation in 12V automotive systems. |
| 18.2V clamping at 33A | Keeps protected microcontroller I/O pins below absolute maximum ratings during worst-case load dump events. |
| AEC-Q101 qualification | Validated for automotive use with full change control, PPAP documentation, and IATF 16949 production audit trail. |
| RoHS 3 & Halogen-free | Complies with EU Directive 2015/863/EU; <900ppm Br, <900ppm Cl, <1000ppm Sb - meets Tier 1 supplier environmental requirements. |
| Low 0.5µA leakage @ 11V | Prevents measurable current draw on always-active CAN/LIN bus lines, preserving battery life in parked vehicle states. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Protects microcontroller CAN transceivers and sensor inputs from alternator load dump and ignition coil switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed directly at connector entry point to clamp negative transients before reaching PHY layer. Use Value: Limits clamped voltage to 18.2V, staying 1.8V below typical 20V MCU I/O absolute max rating and enabling direct interface without series resistors. |
Use Scenario: Shields LIN bus master outputs and door module switch inputs from ESD events during assembly and service. IC Role / Device Role / Timing Role: Standoff-rated TVS on LIN data line, grounded at module PCB to absorb ±30kV contact discharge per ISO10605. Use Value: Sub-0.5µA leakage prevents false wake-up of LIN slaves; 11V VRWM matches 12V system nominal without overdesign margin. |
| Advanced Driver Assistance Systems (ADAS) | Infotainment Head Unit |
Use Scenario: Safeguards camera sensor power rails and MIPI CSI-2 signal lines against hot-swap surges and cable coupling transients. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on 12V camera input and differential video lines to avoid signal integrity impact. Use Value: 18.2V clamping prevents latch-up in image sensor power management ICs during ISO7637-2 Pulse 2a (+112V) events. |
Use Scenario: Guards USB-C and HDMI port power and data lines against ESD and conducted surges from vehicle docking stations. IC Role / Device Role / Timing Role: Front-end TVS on 5V/12V auxiliary power inputs and high-speed serial buses to meet OEM EMC test plans. Use Value: 600W rating sustains multiple 10×1000µs pulses during EMC immunity testing without parameter shift or failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A-13-F | No AEC-Q101 qualification; standard industrial grade; same electrical specs and SMB package. | Not approved for automotive production; suitable for prototyping or non-safety-critical aftermarket modules. | Select only if AEC-Q101 compliance and PPAP support are not required. |
| SMCJ11A-Q | Larger SMC (DO-214AB) package; 1500W PPK rating; identical VRWM/VBR/VC but higher surge capacity. | Used where board space allows larger footprint and higher surge immunity (e.g., main battery feed protection) is needed. | Choose when 1500W rating is mandatory and SMB footprint constraint does not apply. |
Compared with SMBJ11A-13-F, SMBJ11AQ-13-F adds AEC-Q101 validation and IATF 16949 traceability-critical for Tier 1 production-while SMCJ11A-Q trades compact SMB size for 2.5× higher surge power in a less space-constrained layout.
Availability
SMBJ11AQ-13-F is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera interfaces, and infotainment head units requiring stable component supply with full automotive qualification and long-term lifecycle assurance.
Supply support for SMBJ11AQ-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.
This device belongs to Diodes' AEC-Q101-qualified SMBJ-AQ automotive TVS family, engineered specifically for ISO7637-2 and ISO10605 compliance in 12V/24V vehicle subsystems with stringent thermal and reliability demands.
FAQ
What is the polarity configuration of SMBJ11AQ-13-F?
SMBJ11AQ-13-F is a unidirectional TVS diode with cathode band marking on the package. It conducts only during reverse-biased transients-i.e., when the anode is driven negative relative to cathode-and blocks forward current like a standard rectifier diode. This configuration is used for protecting positive-rail circuits such as 12V CAN or LIN lines.
Does SMBJ11AQ-13-F require derating at elevated ambient temperatures?
Yes-its peak pulse power must be derated linearly above +25°C at 4.8W/°C, and steady-state power dissipation drops from 5.0W at TL = +75°C. At +100°C ambient, peak pulse capability falls to ~240W, and designers must verify clamping performance remains within protected IC limits using the derating curve in Figure 6 of DS40740 Rev. 15-2.
How does SMBJ11AQ-13-F differ from bi-directional SMBJ11CAQ-13-F?
SMBJ11AQ-13-F clamps only negative transients (anode-to-cathode), while SMBJ11CAQ-13-F clamps both polarities symmetrically. The unidirectional version offers lower capacitance and tighter leakage (<0.5µA vs. 1.0µA for bi-directional at 11V), making it preferred for DC-biased signal lines like CAN_H/CAN_L where only one polarity of surge dominates.
Is SMBJ11AQ-13-F compatible with lead-free reflow profiles?
Yes-it uses matte tin-plated terminals rated for Pb-free soldering per JEDEC J-STD-020, with peak reflow temperature up to 260°C. Its moisture sensitivity level is 1, eliminating bake requirements prior to assembly. The UL 94V-0 mold compound withstands standard IPC/JEDEC reflow cycles without delamination or cracking.
SMBJ11AQ-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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 33A
- 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
SMBJ11AQ-13-F FAQ
1.How can I place an order for SMBJ11AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11AQ-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 SMBJ11AQ-13-F reliable?
The price and inventory of SMBJ11AQ-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 SMBJ11AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ11AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11AQ-13-F?
SMBJ11AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11AQ-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 SMBJ11AQ-13-F?
For technical support, including SMBJ11AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11AQ-13-F requirements.
6.How does Aetrix verify that SMBJ11AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ11AQ-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 SMBJ11AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ11AQ-13-F?
All SMBJ11AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11AQ-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 SMBJ11AQ-13-F part is unused and in its original packaging.
Return procedure for SMBJ11AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11AQ-13-F Tags
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