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Diodes Incorporated SMBJ30AQ-13-F
- Part No.:
- SMBJ30AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ30AQ-13-F.pdf
- Description:
- TVS DIODE 30VWM 48.4VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:21,540
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Product details
Overview
SMBJ30AQ-13-F from Diodes Incorporated is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for automotive circuit protection. It features a 30V reverse standoff voltage (VRWM), 48.4V maximum clamping voltage (VC) at 12.4A peak pulse current (IPP), and AEC-Q101 qualification for under-hood and powertrain applications.
For engineers reviewing the SMBJ30AQ-13-F datasheet, SMBJ30AQ-13-F pinout, SMBJ30AQ-13-F application, or SMBJ30AQ-13-F equivalent, this part supports ISO7637-2 Pulse 1/2a/3a/3b surge immunity and ISO10605 ESD protection in automotive ECUs, body control modules, and infotainment power rails.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-anode polarity, activated only during negative transients relative to its anode reference. Its 33.3V minimum breakdown voltage (VBR) ensures reliable triggering before downstream IC damage, while the 1.0mA test current (IT) reflects standard IEC 61000-4-5 compliance test conditions.
The device uses silicon avalanche junction technology housed in an SMB package with 0.1g mass and UL 94V-0 molded plastic body. Thermal derating begins above +25°C at 4.8W/°C, and it maintains full functionality across –55°C to +175°C operating temperature range per AEC-Q101 stress testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - Sustains single 10×1000μs surges up to 600W without failure |
| Reverse Standoff Voltage | 30V - Blocks normal 12V/24V automotive system voltages with margin |
| Clamping Voltage | 48.4V @ 12.4A - Limits transient voltage to safe level for 3.3V/5V logic and MCU I/O |
| Breakdown Voltage | 33.3–36.8V @ 1.0mA - Ensures precise, repeatable avalanche conduction onset |
| Leakage Current | <0.5µA @ 30V - Negligible standby power loss in always-on vehicle networks |
| AEC-Q101 Qualified | Yes - Validated for automotive use including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (Surface-Mount Small Outline), 2-terminal DO-214AA outline, 3.30–3.94mm length × 5.00–5.59mm width × 2.00–2.50mm height, matte tin-plated leads, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for unidirectional clamping | Connected to ground or low-side return path; defines polarity of suppression |
| Cathode | Transient input node | Connected to protected line (e.g., CAN_H, LIN, 12V rail); conducts surge current to ground |
Key Features
| Feature | Design Value |
|---|---|
| 600W Peak Pulse Power | Handles ISO7637-2 Pulse 1 (–150V) and Pulse 3a (–220V) without degradation |
| Automotive-Grade Qualification | AEC-Q101 qualified, PPAP capable, manufactured in IATF 16949 certified facilities |
| Low Clamping Ratio | VC/VRWM = 1.61 - Minimizes overvoltage stress on downstream components |
| Lead-Free & Green | RoHS 3 compliant, halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| Engine Control Unit (ECU) Power Input | CAN Bus Transceiver Protection |
|---|---|
Use Scenario: 12V battery-supplied ECU subjected to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp negative transients below –48.4V. Use Value: Prevents latch-up or gate oxide rupture in PMICs and microcontrollers during ISO7637-2 Pulse 1 events. | Use Scenario: CAN_H/CAN_L lines exposed to ESD and coupled noise in vehicle wiring harnesses. IC Role / Device Role / Timing Role: SMBJ30AQ-13-F used on CAN_H with SMBJ30CAQ-13-F on CAN_L for bidirectional protection. Use Value: Limits transient voltage to ≤48.4V during 30kV contact discharge (ISO10605), preserving CAN transceiver integrity. |
| Body Control Module (BCM) LIN Bus | Infotainment System USB Power Rail |
Use Scenario: LIN slave nodes powered from 12V supply with long cable runs susceptible to inductive switching spikes. IC Role / Device Role / Timing Role: TVS placed at LIN transceiver VCC input to absorb Pulse 3b (+150V) energy. Use Value: Maintains LIN communication integrity by preventing transceiver shutdown during repeated surge events. | Use Scenario: USB VBUS line in head unit connected to external accessories with hot-plug risk. IC Role / Device Role / Timing Role: Clamps 12V-to-USB DC-DC converter input against load dump transients. Use Value: Enables robust 5V USB output stability despite upstream 30V VRWM and 48.4V VC clamping behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A-13-F | Non-AEC-Q101 rated; same electrical specs but not automotive qualified | Limited to industrial or consumer applications without automotive reliability requirements | Select when cost sensitivity outweighs AEC-Q101 compliance needs |
| SMCJ30A-13-F | Higher 1500W peak power rating; larger SMC package (7.11 × 6.22 mm) | Better suited for high-energy pulses where PCB space allows larger footprint | Choose when surge energy exceeds 600W capability or thermal dissipation requires larger package |
Compared with SMBJ30A-13-F, SMBJ30AQ-13-F adds AEC-Q101 validation and IATF 16949 traceability; compared with SMCJ30A-13-F, it trades 900W lower peak power for 40% smaller PCB area and identical clamping performance at 12.4A.
Availability
SMBJ30AQ-13-F is available at Aetrix Electronics and suitable for automotive ECU design, CAN/LIN bus protection, and infotainment power rail hardening requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMBJ30AQ-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.
The SMBJ(AQ) series is engineered specifically for automotive transient suppression, delivering AEC-Q101-compliant TVS diodes optimized for ISO7637-2 and ISO10605 compliance in space-constrained layouts.
FAQ
What is the polarity configuration of SMBJ30AQ-13-F?
SMBJ30AQ-13-F is a unidirectional TVS diode with cathode band marking indicating the cathode terminal. It conducts only during reverse-biased transients - i.e., when the cathode is driven more negative than the anode - making it suitable for protecting positive-rail circuits referenced to ground.
Does SMBJ30AQ-13-F meet ISO7637-2 Pulse 3b requirements?
Yes - SMBJ30AQ-13-F clamps to 48.4V at 12.4A, well below the +150V amplitude of ISO7637-2 Pulse 3b. Its 600W rating and fast response time ensure effective suppression of this 150V/100ns transient without degradation when applied within specified duty cycle limits.
How does SMBJ30AQ-13-F differ from SMBJ30CAQ-13-F?
SMBJ30AQ-13-F is unidirectional (no "C" suffix), while SMBJ30CAQ-13-F is bidirectional. The latter has symmetric clamping for AC-coupled lines like CAN or Ethernet, whereas SMBJ30AQ-13-F provides asymmetric protection ideal for DC power rails and single-ended signal lines referenced to ground.
What is the maximum steady-state power dissipation at 75°C lead temperature?
At TL = +75°C, SMBJ30AQ-13-F delivers 5.0W steady-state power dissipation (PM(AV)). This value is derated linearly above +25°C ambient at 4.8W/°C, meaning its usable continuous power drops to ~3.6W at +55°C ambient with proper PCB copper pour thermal management.
SMBJ30AQ-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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 12.4A
- 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
SMBJ30AQ-13-F FAQ
1.How can I place an order for SMBJ30AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ30AQ-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 SMBJ30AQ-13-F reliable?
The price and inventory of SMBJ30AQ-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 SMBJ30AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ30AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ30AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ30AQ-13-F?
SMBJ30AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ30AQ-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 SMBJ30AQ-13-F?
For technical support, including SMBJ30AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ30AQ-13-F requirements.
6.How does Aetrix verify that SMBJ30AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ30AQ-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 SMBJ30AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ30AQ-13-F?
All SMBJ30AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ30AQ-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 SMBJ30AQ-13-F part is unused and in its original packaging.
Return procedure for SMBJ30AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ30AQ-13-F Tags
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