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Diodes Incorporated SMBJ8.0AQ-13-F
- Part No.:
- SMBJ8.0AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0AQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:7,436
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Product details
Overview
SMBJ8.0AQ-13-F from Diodes Incorporated is a unidirectional 600W automotive transient voltage suppressor (TVS) diode with 8.0V reverse standoff voltage, 13.6V clamping voltage at 44.1A peak pulse current, and AEC-Q101 qualification for under-hood power line protection in ISO7637-2 Pulse 1/2a/3a/3b-compliant systems.
For engineers reviewing the SMBJ8.0AQ-13-F datasheet, SMBJ8.0AQ-13-F pinout, SMBJ8.0AQ-13-F application, or SMBJ8.0AQ-13-F equivalent, key selection criteria include clamping performance under 10×1000μs surge, IATF 16949 manufacturing traceability, RoHS/halogen-free compliance, and thermal derating above +25°C ambient.
Technical Context
This unidirectional TVS diode operates as a shunt-clamping device during voltage transients, conducting surge current to ground when reverse voltage exceeds 8.0V standoff and clamping to ≤13.6V at 44.1A. It uses silicon avalanche junction technology with 100A non-repetitive forward surge rating (8.3ms half-sine).
Designed for automotive 12V battery rail protection, it meets ISO10605 ESD (±30kV air/contact) and ISO7637-2 transient immunity requirements-Pulse 1 (−150V), Pulse 2a (+112V), Pulse 3a (−220V), Pulse 3b (+150V)-with thermal stability across −55°C to +175°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W (10×1000μs waveform; defines maximum transient energy absorption capability) |
| Reverse Standoff Voltage | 8.0V (maximum continuous DC or RMS voltage before clamping initiates) |
| Clamping Voltage | 13.6V @ 44.1A (voltage seen by protected circuit during worst-case surge) |
| Breakdown Voltage | 8.89–9.83V @ 1.0mA (avalanche onset tolerance band; ensures reliable turn-on margin) |
| Leakage Current | 50µA max @ 8.0V (low standby loss; critical for always-on automotive modules) |
| Operating Temperature | −55°C to +175°C (enables placement near engines or power electronics without derating) |
| AEC-Q101 Qualified | Yes (validates reliability for automotive electronic control units per stress test standard) |
Pinout & Package
Package: SMB (Surface-Mount Small Outline) molded plastic case, UL 94V-0 rated, 0.1g weight, matte tin-plated terminals, moisture sensitivity level 1 (J-STD-020). Cathode band denotes polarity on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge return path | Connected to ground or low-impedance reference plane to sink transient current |
| Cathode | Protected line connection | Connected to 12V rail or signal line; clamps to Anode when overvoltage occurs |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse power | Handles high-energy transients like load dump without failure, reducing need for redundant protection |
| AEC-Q101 qualification | Validated for automotive use with PPAP documentation support and IATF 16949 production control |
| RoHS & halogen-free | Complies with EU directives 2011/65/EU and 2015/863/EU; supports green manufacturing requirements |
| Low clamping ratio (VC/VRWM = 1.7) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) CAN Bus Line |
|---|---|
Use Scenario: Protects 12V supply input of engine ECU against ISO7637-2 Pulse 1 (inductive load dump) and Pulse 3a (capacitive discharge). IC Role / Device Role / Timing Role: Shunt-clamping TVS diode placed directly at connector entry point before DC-DC converter. Use Value: Limits transient voltage to ≤13.6V, preventing latch-up or damage to 3.3V/5V microcontrollers and analog front-ends. | Use Scenario: Guards high-speed CAN_H/CAN_L lines in BCM against ESD events per ISO10605 ±30kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on each CAN line referenced to chassis ground. Use Value: Clamps ESD pulses within nanoseconds while adding <1pF parasitic capacitance, preserving signal integrity at 500kbps. |
| ADAS Camera Power Rail | Electric Power Steering (EPS) Motor Driver |
Use Scenario: Shields 12V camera module power input from ignition noise and alternator ripple-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power feed, positioned upstream of LDO regulators. Use Value: Maintains stable 12V rail during cold-crank (−40°C) and hot-soak (+125°C ambient) conditions without leakage-induced battery drain. | Use Scenario: Protects H-bridge gate drivers from inductive kickback during EPS motor commutation. IC Role / Device Role / Timing Role: Bidirectional clamping not used; unidirectional SMBJ8.0AQ-13-F applied to low-side switch return path. Use Value: Absorbs 100A surge (8.3ms) without degradation, enabling compact PCB layout versus discrete MOV+diode solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A-Q | Same electrical specs; differs only in packaging marking (no "-13-F" suffix), indicating alternate reel packaging or date code format | No functional difference; identical AEC-Q101 qualification and thermal ratings | Select when sourcing from legacy inventory or alternate distribution channels with different packing codes |
| SMCJ8.0A-Q | Higher 1500W peak power, larger SMC package (7.11 × 6.22 mm vs. SMB's 3.94 × 5.59 mm), 15.0V clamping at 40A | Better suited for higher-energy transients but requires more PCB area and has higher thermal mass | Choose only if system-level testing shows SMBJ8.0AQ-13-F clamping margin is insufficient under worst-case load dump |
Compared with SMBJ8.0A-Q, this part offers identical protection with standardized tape-and-reel logistics; versus SMCJ8.0A-Q, it trades lower surge capacity for space-constrained automotive layouts where 600W suffices per ISO7637-2 Pulse 3b limits.
Availability
SMBJ8.0AQ-13-F is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering designs requiring stable component supply with full automotive-grade traceability.
Supply support for SMBJ8.0AQ-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 company specializing in discrete, analog, and mixed-signal solutions, with design and manufacturing operations certified to IATF 16949 for automotive-grade components.
This device belongs to the SMBJ(AQ) series of AEC-Q101-qualified TVS diodes engineered specifically for ISO7637-2 and ISO10605 compliance in automotive power and signal line protection.
FAQ
What is the maximum clamping voltage of SMBJ8.0AQ-13-F under a 10×1000μs surge?
The maximum clamping voltage is 13.6V at 44.1A peak pulse current, measured per the 10×1000μs waveform defined in Figure 4 of DS40740 Rev. 15-2. This value is guaranteed across the full operating temperature range and represents the upper limit of voltage imposed on protected circuitry during transient events.
Is SMBJ8.0AQ-13-F suitable for bidirectional signal line protection?
No - SMBJ8.0AQ-13-F is unidirectional, indicated by the absence of "C" in its part number. For bidirectional protection (e.g., USB or RS-485 lines), select the "C" variant such as SMBJ8.0CAQ-13-F, which provides symmetrical clamping for both polarities without requiring external polarity management.
How does the 8.0V standoff voltage relate to 12V automotive systems?
The 8.0V VRWM is intentionally set below nominal 12V to ensure clamping activation during low-voltage transients like ISO7637-2 Pulse 3b (+150V) while remaining inactive during normal operation including cold-crank (down to ~6V) and load dump overshoots that exceed 13.6V. Its 50µA leakage at 8.0V avoids excessive quiescent current draw.
Does SMBJ8.0AQ-13-F require heatsinking in typical automotive mounting?
No additional heatsink is required for single-event surge suppression, as its 5.0W steady-state power dissipation rating at TL = +75°C and 4.8W/°C derating above +25°C ambient are sufficient for intermittent transient duty cycles (≤4 pulses/minute). PCB copper area per Diodes' suggested pad layout provides adequate thermal conduction.
SMBJ8.0AQ-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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 44.1A
- 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
SMBJ8.0AQ-13-F FAQ
1.How can I place an order for SMBJ8.0AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0AQ-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 SMBJ8.0AQ-13-F reliable?
The price and inventory of SMBJ8.0AQ-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 SMBJ8.0AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ8.0AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0AQ-13-F?
SMBJ8.0AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0AQ-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 SMBJ8.0AQ-13-F?
For technical support, including SMBJ8.0AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0AQ-13-F requirements.
6.How does Aetrix verify that SMBJ8.0AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0AQ-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 SMBJ8.0AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ8.0AQ-13-F?
All SMBJ8.0AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0AQ-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 SMBJ8.0AQ-13-F part is unused and in its original packaging.
Return procedure for SMBJ8.0AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0AQ-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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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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