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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Diodes Incorporated SMBJ7.0AQ-13-F

Name: SMBJ7.0AQ-13-F
Brand: Diodes Incorporated
SKU: SMBJ7.0AQ-13-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SMBJ7.0AQ-13-F

Manufacturer:: Diodes Incorporated

Category:: TVS Diodes

Package:: DO-214AA, SMB

Datasheet:: SMBJ7.0AQ-13-F.pdf

Description:: TRANSIENT VOLTAGE SUPPRESSOR SMB

Quantity:: RFQ Add To RFQ list

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Inventory:6,107

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Product details

Overview

SMBJ7.0AQ-13-F from Diodes Incorporated is a unidirectional 600W surface-mount automotive transient voltage suppressor (TVS) diode with 7.0V reverse standoff voltage, 12.0V clamping voltage at 50A peak pulse current, and AEC-Q101 qualification. 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 SMBJ7.0AQ-13-F datasheet, SMBJ7.0AQ-13-F pinout, SMBJ7.0AQ-13-F application, or SMBJ7.0AQ-13-F equivalent, key selection criteria include clamping voltage margin vs. system rail, I_PP capability under ISO7637-2 Pulse 3b (+150V), thermal derating above +25°C, and SMB package solderability per MIL-STD-202.

Technical Context

This TVS operates as a unidirectional avalanche clamp in series with the protected line and ground. Its 7.78V minimum breakdown voltage (V_BR) at 1.0mA ensures reliable turn-on before downstream IC damage, while 12.0V clamping voltage (V_C) at 50A limits transient energy delivered to sensitive receivers.

Designed for automotive environments, it sustains –55°C to +175°C junction temperature, complies with ISO10605 (150pF/330Ω) and ISO7637-2 (Pulse 1/2a/3a/3b), and features lead-free matte tin plating rated to J-STD-020 Level 1 moisture sensitivity.

Key Specifications

Parameter	Value and Actual Design Meaning
Peak Pulse Power	600W - Withstands 10×1000μs transients up to 50A without failure
Reverse Standoff Voltage (V_RWM)	7.0V - Blocks normal 12V system operation up to 7.0V; allows safe margin below 13.5V battery max
Clamping Voltage (V_C)	12.0V @ 50A - Limits surge voltage seen by downstream CAN transceiver or MCU I/O
Breakdown Voltage (V_BR)	7.78–8.60V @ 1.0mA - Ensures predictable, low-jitter turn-on during fast-rising transients
Leakage Current (I_R)	200μA @ 7.0V - Negligible standby power draw on always-on automotive circuits
Package	SMB - Standardized 3.94mm × 5.59mm footprint compatible with automated SMT assembly

Pinout & Package

Package: SMB (Surface-Mount Small Outline) - Molded plastic body, UL 94V-0 rated, 0.1g mass, cathode-banded unidirectional configuration.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Transient return path	Connected to system ground; carries full 100A I_FSM surge current during 8.3ms half-sine events
Cathode	Protected line connection	Connected to signal/power line (e.g., CAN_H); blocks 7.0V DC but avalanches above V_BR

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive underhood use with lifetime reliability testing per stress conditions
600W peak pulse rating	Handles ISO7637-2 Pulse 1 (–150V) without degradation when mounted per recommended pad layout
Lead-free & halogen-free	Meets RoHS 3 (2015/863/EU) and "Green" definition (<900ppm Br/Cl, <1000ppm Sb)
Low clamping ratio (V_C/V_RWM = 1.71)	Minimizes overvoltage stress on 5V-tolerant receivers during 12V system transients

Applications

Automotive CAN Bus Protection

Body Control Module (BCM) Power Input

Use Scenario: Installed across CAN_H and ground in 12V vehicle networks to suppress load dump and inductive switching noise.

IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches the CAN transceiver's ESD protection diodes.

Use Value: Prevents permanent damage to TJA1042/1055 transceivers during ISO7637-2 Pulse 2a (+112V) events.

Use Scenario: Placed at 12V input of BCM power supply to absorb alternator load dump surges.

IC Role / Device Role / Timing Role: Primary overvoltage clamp limiting input rail to ≤12.0V during 100ms transients.

Use Value: Enables use of lower-voltage-rated input capacitors and LDOs, reducing BOM cost by 12%.

Automotive Sensor Interface (e.g., ABS Wheel Speed)

Infotainment System USB Power Line

Use Scenario: Mounted on VR sensor signal lines exposed to chassis ground bounce and ignition noise.

IC Role / Device Role / Timing Role: Fast-response unidirectional clamp protecting analog front-end amplifier inputs.

Use Value: Maintains signal integrity during ISO7637-2 Pulse 3a (–220V) with <1ns response time.

Use Scenario: Applied to VBUS line of USB Type-C ports in head units to meet OEM ESD requirements.

IC Role / Device Role / Timing Role: Secondary ESD clamp supplementing internal USB PHY protection.

Use Value: Passes ±30kV air/contact discharge per ISO10605 without latch-up or parameter shift.

Equivalent & Alternatives

The following parts are listed as comparable options for similar unidirectional automotive TVS applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ7.0A-13-F	No AEC-Q101 qualification; standard industrial grade	Not approved for PPAP or IATF 16949 production; limited to non-safety-critical modules	Select only for prototyping or non-automotive industrial use where qualification is not required
SMCJ7.0A-Q	SMC package (7.11mm × 6.22mm); 1500W rating; same V_RWM/V_C	Larger footprint enables higher surge endurance but requires PCB redesign	Choose when system-level testing shows 600W insufficient for worst-case load dump exposure

Compared with SMBJ7.0A-13-F, the SMBJ7.0AQ-13-F adds AEC-Q101 validation and PPAP support for production release; versus SMCJ7.0A-Q, it trades surge capacity for space-constrained layouts in ECUs with tight board area budgets.

Availability

SMBJ7.0AQ-13-F is available at Aetrix Electronics and suitable for automotive electronic control units (ECUs), infotainment systems, and body electronics requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for SMBJ7.0AQ-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 for automotive, industrial, and consumer markets.

The SMBJ(AQ) series targets automotive-grade circuit protection, designed specifically to meet ISO7637-2 and ISO10605 compliance in engine control, ADAS, and infotainment subsystems.

FAQ

What is the maximum operating temperature for SMBJ7.0AQ-13-F?

The SMBJ7.0AQ-13-F has a specified junction temperature range of –55°C to +175°C, enabling deployment in under-hood automotive locations such as engine control modules and transmission control units where ambient temperatures exceed 125°C.

Does SMBJ7.0AQ-13-F support bidirectional transient suppression?

No - SMBJ7.0AQ-13-F is unidirectional, indicated by the absence of "C" in its part number. Bidirectional variants (e.g., SMBJ7.0CAQ-13-F) exist but feature symmetric clamping and no cathode band marking.

How does SMBJ7.0AQ-13-F differ from standard SMBJ7.0A-13-F?

The "Q" suffix denotes AEC-Q101 qualification, PPAP capability, and manufacturing in IATF 16949-certified facilities. Electrically identical, SMBJ7.0AQ-13-F undergoes additional stress testing including temperature cycling, high-temperature operating life, and ESD robustness validation.

What is the recommended PCB pad layout for SMBJ7.0AQ-13-F?

Diodes recommends using the SMB outline dimensions from package drawing DS40740 Rev. 15-2: 3.30–3.94mm length, 5.00–5.59mm width, with thermal relief pads for both terminals to manage 5.0W steady-state dissipation at T_L = +75°C.

SMBJ7.0AQ-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):: 7V

Voltage - Breakdown (Min):: 7.78V

Voltage - Clamping (Max) @ Ipp:: 12V

Current - Peak Pulse (10/1000µs):: 50A

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

SMBJ7.0AQ-13-F FAQ

1.How can I place an order for SMBJ7.0AQ-13-F through Aetrix?

Please submit a Request for Quotation (RFQ) for SMBJ7.0AQ-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 SMBJ7.0AQ-13-F reliable?

The price and inventory of SMBJ7.0AQ-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 SMBJ7.0AQ-13-F is usually 5 days.

3.What payment methods are accepted for SMBJ7.0AQ-13-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0AQ-13-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SMBJ7.0AQ-13-F?

SMBJ7.0AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SMBJ7.0AQ-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 SMBJ7.0AQ-13-F?

For technical support, including SMBJ7.0AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0AQ-13-F requirements.

6.How does Aetrix verify that SMBJ7.0AQ-13-F is sourced from the original manufacturer or authorized distributors?

All SMBJ7.0AQ-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 SMBJ7.0AQ-13-F meets industry standards.

7.What is the process for return or replacement of SMBJ7.0AQ-13-F?

All SMBJ7.0AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0AQ-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 SMBJ7.0AQ-13-F part is unused and in its original packaging.

Return procedure for SMBJ7.0AQ-13-F:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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