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Diodes Incorporated SMBJ7.5AQ-13-F
- Part No.:
- SMBJ7.5AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.5AQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:8,428
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Product details
Overview
SMBJ7.5AQ-13-F from Diodes Incorporated is a unidirectional 600W automotive transient voltage suppressor (TVS) diode with 7.5V reverse standoff voltage, 12.9V clamping voltage at 46.5A 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 SMBJ7.5AQ-13-F datasheet, SMBJ7.5AQ-13-F pinout, SMBJ7.5AQ-13-F application, or SMBJ7.5AQ-13-F equivalent, key selection criteria include clamping voltage margin relative to system rail, IPP capability under ISO7637-2 Pulse 3b (+150V), thermal derating above +25°C, and SMB package solderability per MIL-STD-202.
Technical Context
This unidirectional TVS operates as a shunt-clamping device triggered by avalanche breakdown above its 8.33–9.21V VBR range at 1.0mA test current. Its 12.9V VC at 46.5A (10×1000μs waveform) ensures safe clamping of transients while maintaining <100μA leakage at 7.5V VRWM.
Designed for automotive environments, it sustains −55°C to +175°C junction temperature, complies with IATF 16949 manufacturing, and meets ISO10605 (150pF/330Ω) and ISO7637-2 (Pulse 1/2a/3a/3b) surge immunity requirements without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - Sustains single 10×1000μs surges up to 46.5A without failure |
| Reverse Standoff Voltage | 7.5V - Blocks normal 12V automotive rail operation with <100μA leakage |
| Clamping Voltage | 12.9V @ 46.5A - Limits downstream IC voltage to safe level during ISO7637-2 Pulse 2a |
| Breakdown Voltage | 8.33–9.21V @ 1.0mA - Ensures reliable avalanche initiation before system damage |
| Operating Temperature | −55°C to +175°C - Supports under-hood placement adjacent to ECUs and power modules |
| AEC-Q101 Qualified | Yes - Validated for automotive use with PPAP documentation and change control |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic UL 94V-0 housing; 0.1g mass; matte tin-plated terminals; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-impedance return path for clamping current |
| Cathode | High-side surge input | Connected to protected line (e.g., CAN_H); cathode band marks polarity |
Key Features
| Feature | Design Value |
|---|---|
| 600W Peak Pulse Power | Handles ISO7637-2 Pulse 1 (−150V) on 12V lines without degradation |
| 12.9V Clamping at 46.5A | Keeps protected MCU I/O below absolute maximum rating during 10×1000μs transients |
| AEC-Q101 Qualification | Validated for automotive production with stress testing across temperature and life cycles |
| Lead-Free & Halogen-Free | RoHS 3 compliant with <900ppm Br+Cl and <1000ppm Sb - meets Tier 1 auto OEM green mandates |
Applications
| Automotive Body Control Module (BCM) | Engine Control Unit (ECU) Sensor Interface |
|---|---|
Use Scenario: Protects LIN bus transceivers from load dump and battery reversal events in door module wiring harnesses. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between LIN data line and chassis ground. Use Value: Prevents LIN transceiver latch-up during ISO7637-2 Pulse 2a (+112V) by clamping to 12.9V within 1ns response time. | Use Scenario: Shields analog pressure/temperature sensor inputs from ignition coil coupling noise in engine bay. IC Role / Device Role / Timing Role: Unidirectional surge suppressor on sensor signal line referenced to 5V supply rail. Use Value: Maintains sensor accuracy by limiting transient overvoltage to <13V, avoiding ADC saturation or op-amp rail-to-rail clipping. |
| CAN FD Network Node | ADAS Camera Power Input |
Use Scenario: Guards high-speed CAN FD transceivers against ESD and alternator ripple in infotainment head units. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; SMBJ7.5AQ-13-F used on single-ended supply rail (VCC) feeding transceiver. Use Value: Absorbs 600W surge energy from ISO10605 contact discharge without altering CAN signal integrity or timing jitter. | Use Scenario: Secures 12V camera module input against jump-start transients and hot-swap in-vehicle power systems. IC Role / Device Role / Timing Role: Primary front-end TVS on main power rail upstream of DC-DC converter. Use Value: Survives ISO7637-2 Pulse 3b (+150V) by diverting >46A peak current, preserving downstream regulator enable logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5A-Q | Same electrical specs; non-AEC-Q101, commercial-grade marking | Lacks PPAP support and automotive change control documentation | Select only for non-automotive industrial prototypes |
| SMCJ7.5A | Same VRWM/VC, but SMC package (higher PPK = 1500W, larger footprint) | Requires PCB redesign due to 7.11mm × 6.22mm vs. SMB's 3.94mm × 5.59mm | Choose when higher surge margin is needed and board space allows |
Compared with SMBJ7.5A-Q, SMBJ7.5AQ-13-F adds AEC-Q101 validation and traceable automotive sourcing; versus SMCJ7.5A, it trades peak power headroom for compact SMB layout compatibility in space-constrained ECU modules.
Availability
SMBJ7.5AQ-13-F is available at Aetrix Electronics and suitable for automotive body electronics, powertrain sensor interfaces, ADAS camera modules, and infotainment CAN networks requiring stable component supply across multi-year vehicle production cycles.
Supply support for SMBJ7.5AQ-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, with design centers across Asia, Europe, and the US.
The SMBJ(AQ) series targets automotive-grade circuit protection, engineered specifically to meet ISO7637-2 and ISO10605 compliance with AEC-Q101 reliability and IATF 16949 manufacturing control.
FAQ
What is the maximum clamping voltage of SMBJ7.5AQ-13-F under standard test conditions?
The maximum clamping voltage is 12.9V at 46.5A peak pulse current using the 10×1000μs waveform defined in IEC 61000-4-5. This value is measured with the device mounted on a standard FR-4 PCB per JEDEC standards and represents worst-case voltage seen by downstream components during surge events.
Does SMBJ7.5AQ-13-F support bidirectional transient suppression?
No - SMBJ7.5AQ-13-F is a unidirectional TVS diode, indicated by the absence of "C" suffix. It conducts only during reverse-biased overvoltage events. For bidirectional protection (e.g., data lines), use SMBJ7.5CAQ-13-F, which has symmetric clamping in both polarities.
How does the SMB package affect thermal performance in high-ambient environments?
The SMB package delivers 5.0W steady-state power dissipation at TL = +75°C, with linear derating of 4.8W/°C above +25°C ambient. Its low thermal resistance (RθJA ≈ 60°C/W on 1-in² copper) enables operation up to +175°C junction temperature when properly heatsinked on automotive PCBs.
Is SMBJ7.5AQ-13-F compatible with lead-free reflow profiles?
Yes - it features matte tin-plated terminals qualified per J-STD-020 moisture sensitivity level 1 and supports standard lead-free reflow profiles (peak 260°C, 60s max). The UL 94V-0 mold compound withstands repeated thermal cycling without delamination or parameter shift.
SMBJ7.5AQ-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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 46.5A
- 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
SMBJ7.5AQ-13-F FAQ
1.How can I place an order for SMBJ7.5AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.5AQ-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 SMBJ7.5AQ-13-F reliable?
The price and inventory of SMBJ7.5AQ-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 SMBJ7.5AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ7.5AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.5AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.5AQ-13-F?
SMBJ7.5AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.5AQ-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 SMBJ7.5AQ-13-F?
For technical support, including SMBJ7.5AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.5AQ-13-F requirements.
6.How does Aetrix verify that SMBJ7.5AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ7.5AQ-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 SMBJ7.5AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ7.5AQ-13-F?
All SMBJ7.5AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.5AQ-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 SMBJ7.5AQ-13-F part is unused and in its original packaging.
Return procedure for SMBJ7.5AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.5AQ-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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Diodes Incorporated
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