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Diodes Incorporated SMCJ40AQ-13-F
- Part No.:
- SMCJ40AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ40AQ-13-F.pdf
- Description:
- Transient Voltage Suppressor SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,936
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Product details
Overview
SMCJ40AQ-13-F from Diodes Incorporated is a unidirectional 1,500W automotive transient voltage suppressor (TVS) diode with 40V reverse standoff voltage, 64.5V max clamping voltage at 23.2A 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 SMCJ40AQ-13-F datasheet, SMCJ40AQ-13-F pinout, SMCJ40AQ-13-F application, or SMCJ40AQ-13-F equivalent, this device is selected for high-energy surge suppression in 12V/24V automotive ECUs, infotainment power rails, and ADAS sensor interfaces where fast response (<1 ns), low leakage (<5 µA), and IATF 16949 traceability are required.
Technical Context
This unidirectional TVS diode operates as a voltage-clamping overvoltage protection device in series with automotive power inputs. It triggers at 44.4V minimum breakdown voltage (VBR) with 1.0mA test current and clamps transients to ≤64.5V at 23.2A (10×1000µs waveform), delivering 1,500W peak pulse power dissipation without degradation.
Designed for harsh automotive environments, it features glass-passivated die construction, -55°C to +150°C operating junction temperature range, and compliance with ISO10605 (±30kV ESD) and ISO7637-2 (Pulse 1: -100V; Pulse 2a: +50V; Pulse 3a: -150V; Pulse 3b: +100V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - sustains single 10×1000µs surges up to this level without failure |
| Reverse Standoff Voltage (VRWM) | 40V - maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage (VBR) | 44.4V–49.1V @ 1.0mA - precise triggering threshold for overvoltage events |
| Max Clamping Voltage (VC) | 64.5V @ IPP = 23.2A - limits downstream circuit voltage during worst-case surge |
| Peak Pulse Current (IPP) | 23.2A - maximum non-repetitive surge current the device can safely divert |
| Leakage Current (IR) | <5 µA @ 40V - negligible standby power loss and minimal impact on upstream regulation |
| Response Time | <1 ns - clamps transients before sensitive ICs experience overstress |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic body with UL 94V-0 flammability rating, cathode band polarity indicator, 0.21g weight, and matte tin lead finish compliant with MIL-STD-202 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge return path | Connected to ground or low-impedance chassis reference for bidirectional energy shunting |
| Cathode | Protected line connection | Connected to input rail (e.g., battery feed); clamps to anode when voltage exceeds VRWM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use with PPAP capability and IATF 16949 manufacturing control |
| Glass-passivated die | Enhanced moisture resistance and long-term reliability in humid under-hood conditions |
| 1,500W peak pulse rating | Supports robust protection against ISO7637-2 Pulse 1 (-100V) and Pulse 3a (-150V) waveforms |
| RoHS 3 & "Green" compliant | Halogen-free (<900ppm Br/Cl, <1000ppm Sb) and lead-free per EU directives |
| Fast response <1 ns | Prevents voltage overshoot from reaching downstream MCU, CAN transceivers, or sensors |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Infotainment Power Rail |
|---|---|
|
Use Scenario: 12V battery feed to engine ECU exposed to load dump and alternator ripple. IC Role / Device Role: Primary clamping TVS in parallel with input filter capacitor. Use Value: Limits transient voltage to ≤64.5V during ISO7637-2 Pulse 1 (-100V), protecting 5V/3.3V LDOs and microcontrollers. |
Use Scenario: 24V supply line to head unit power management IC in commercial vehicle. IC Role / Device Role: Secondary surge protector after primary fuse and LC filter. Use Value: Absorbs 1,500W pulses from ISO7637-2 Pulse 2a (+50V) without thermal runaway, preserving display controller integrity. |
| ADAS Camera Module Interface | Body Control Module (BCM) LIN Bus Power |
|
Use Scenario: 12V power input to 77GHz radar camera module with tight voltage tolerance. IC Role / Device Role: Final-stage overvoltage clamp before DC-DC converter input. Use Value: Fast <1 ns response prevents 40V+ spikes from corrupting image sensor bias rails or serializer ICs. |
Use Scenario: 12V supply to LIN transceiver and microcontroller in door module. IC Role / Device Role: Low-leakage (≤5 µA) TVS enabling always-on functionality without battery drain. Use Value: Maintains ≤5 µA IR at 40V VRWM while clamping ISO10605 ±30kV ESD events to safe levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC40-13-F (Diodes Inc.) | Lower 400W rating, 60V clamping at 6.7A, same SMC package | Targeted for lower-energy CAN/LIN bus protection, not full-power line clamping | Select only if surge energy is limited to <400W and system allows higher VC |
| SMAJ40A (ON Semiconductor) | Same 40V VRWM, but 64.3V VC @ 23.3A; AEC-Q101 qualified; SMA package (smaller thermal mass) | SMA package has lower PM(AV) (3W vs 5W) and reduced surge margin in sustained hot environments | Acceptable for space-constrained designs where ambient <85°C and surge duty cycle is low |
Compared with SAC40-13-F and SMAJ40A, SMCJ40AQ-13-F delivers 3.75× higher peak power handling, superior thermal derating (5W PM(AV) at TL=75°C), and verified performance across full ISO7637-2 pulse suite - making it the preferred choice for primary power rail protection in demanding under-hood applications.
Availability
SMCJ40AQ-13-F is available at Aetrix Electronics and suitable for automotive ECU power inputs, ADAS camera modules, infotainment head units, and body control modules requiring stable component supply with full AEC-Q101 traceability and IATF 16949 sourcing.
Supply support for SMCJ40AQ-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 with over 50 years of power management expertise.
The SMCJ series belongs to Diodes' AEC-Q101-qualified automotive TVS portfolio, engineered specifically for ISO7637-2 and ISO10605 compliance in 12V/24V vehicle electrical systems with emphasis on clamping precision, thermal robustness, and supply chain transparency.
FAQ
What is the maximum operating temperature for SMCJ40AQ-13-F?
The SMCJ40AQ-13-F has a specified junction temperature range of -55°C to +150°C and a storage temperature range of -55°C to +175°C. Its steady-state power dissipation is rated at 5.0W at lead temperature (TL) of +75°C, with linear derating above that point per Figure 6 in DS40741 Rev. 8-2.
Is SMCJ40AQ-13-F unidirectional or bidirectional?
SMCJ40AQ-13-F is unidirectional, indicated by the absence of the "C" suffix (which denotes bidirectional versions like SMCJ40CAQ-13-F). It features a cathode band marking and conducts surge current from cathode to anode during reverse overvoltage events.
How does SMCJ40AQ-13-F meet ISO7637-2 requirements?
It is validated for ISO7637-2 Pulse 1 (-100V), Pulse 2a (+50V), Pulse 3a (-150V), and Pulse 3b (+100V) through its 1,500W peak pulse rating, 64.5V clamping voltage at 23.2A, and fast <1 ns response time - all confirmed in Diodes' characterization per DS40741.
What is the marking code for SMCJ40AQ-13-F on the device body?
The top-side marking for SMCJ40AQ-13-F is "BFR", as listed in the Electrical Characteristics table of DS40741 Rev. 8-2. This 3-character code identifies the 40V unidirectional variant within the SMCJ family and is laser-etched on the SMC package body.
SMCJ40AQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 23.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- SMC
SMCJ40AQ-13-F FAQ
1.How can I place an order for SMCJ40AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ40AQ-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 SMCJ40AQ-13-F reliable?
The price and inventory of SMCJ40AQ-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 SMCJ40AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMCJ40AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ40AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ40AQ-13-F?
SMCJ40AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ40AQ-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 SMCJ40AQ-13-F?
For technical support, including SMCJ40AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ40AQ-13-F requirements.
6.How does Aetrix verify that SMCJ40AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMCJ40AQ-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 SMCJ40AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMCJ40AQ-13-F?
All SMCJ40AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ40AQ-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 SMCJ40AQ-13-F part is unused and in its original packaging.
Return procedure for SMCJ40AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ40AQ-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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onsemi
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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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