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Diodes Incorporated SMCJ20AQ-13-F
- Part No.:
- SMCJ20AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ20AQ-13-F.pdf
- Description:
- TVS DIODE 20VWM 32.4VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,025
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Product details
Overview
SMCJ20AQ-13-F from Diodes Incorporated is a unidirectional 1,500W automotive-grade transient voltage suppressor (TVS) diode in SMC package, with 20V reverse standoff voltage (VRWM), 32.4V max clamping voltage (VC) at 46.3A peak pulse current (IPP), and AEC-Q101 qualification for under-hood power line protection against ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD events.
For engineers reviewing the SMCJ20AQ-13-F datasheet, SMCJ20AQ-13-F pinout, SMCJ20AQ-13-F application, or SMCJ20AQ-13-F equivalent, this device is selected for robust surge immunity in 12V/24V automotive subsystems where fast clamping (<1 ns response), low leakage (<5 µA @ VRWM), and IATF 16949-manufactured reliability are critical.
Technical Context
This TVS diode operates as a unidirectional shunt protector, triggered when reverse voltage exceeds 20V VRWM and clamping within 32.4V at 46.3A IPP under 10/1000µs waveform. It features glass-passivated die construction for stable breakdown and low capacitance (≈100 pF at 0 V, 1 MHz).
Designed for automotive environments, it sustains -55°C to +150°C junction temperature, handles 200A non-repetitive forward surge (8.3 ms half-sine), and delivers 5W steady-state power dissipation at TL = +75°C with UL 94V-0 molded plastic package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - Withstands high-energy transients like ISO7637-2 Pulse 1 (-100V) without failure |
| Reverse Standoff Voltage | 20V - Blocks normal 12V/24V system operation while remaining inactive below threshold |
| Max Clamping Voltage | 32.4V @ IPP = 46.3A - Limits downstream IC voltage to safe level during 10/1000µs surge |
| Breakdown Voltage | 22.2–24.5V @ IT = 1.0mA - Ensures predictable turn-on with tight tolerance for design margining |
| Leakage Current | <5 µA @ 20V - Minimizes standby power loss and avoids false triggering in low-current circuits |
| Response Time | <1 ns - Reacts faster than microsecond-scale transients, protecting sensitive CAN/LIN receivers |
| AEC-Q101 Qualified | Yes - Validated for automotive use with PPAP capability and IATF 16949 manufacturing control |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic UL 94V-0 housing; cathode band indicates polarity; weight ≈ 0.21 g; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected line (e.g., battery rail); enables clamping to ground during overvoltage |
| Cathode | Current exit point during reverse-biased clamping | Connected to ground reference; defines unidirectional clamping path for negative transients |
Key Features
| Feature | Design Value |
|---|---|
| 1,500W peak pulse rating | Supports full ISO7637-2 Pulse 1 (-100V) and Pulse 3a (-150V) without degradation |
| Glass passivated die | Ensures stable VBR over temperature and lifetime, reducing parameter drift in engine bay |
| Lead-free, halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive environmental compliance requirements |
| Fast <1 ns response | Clamps before transient energy couples into MCU I/O or CAN transceiver inputs |
| Low 100 pF capacitance | Preserves signal integrity on high-speed lines (e.g., LIN bus) without added jitter or attenuation |
Applications
| Engine Control Unit (ECU) Power Input | CAN Bus Transceiver Protection |
|---|---|
Use Scenario: 12V battery feed to ECU main power regulator subjected to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VIN and GND, clamping surges before DC/DC input stage. Use Value: Limits voltage to ≤32.4V during ISO7637-2 Pulse 1, preventing damage to 36V-rated LDOs and PMICs. |
Use Scenario: CAN_H/CAN_L lines exposed to ESD events per ISO10605 (±30kV contact discharge). IC Role / Device Role / Timing Role: Dual TVS array (e.g., SMCJ20AQ paired with bidirectional unit) protects differential bus nodes. Use Value: Sub-1ns response prevents latch-up in CAN transceivers; 100pF capacitance avoids bit error rate degradation. |
| Body Control Module (BCM) LIN Interface | ADAS Camera Power Rail |
Use Scenario: LIN slave node powered from vehicle body network, vulnerable to coupled transients from door actuator switching. IC Role / Device Role / Timing Role: Single SMCJ20AQ-13-F on LIN_VCC rail, referenced to chassis ground. Use Value: Clamps induced spikes to ≤32.4V, maintaining LIN physical layer compliance (12V nominal, 18V max) and avoiding reset. |
Use Scenario: 12V input to image sensor module in rear-view camera, exposed to ignition noise and hot-swap events. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of buck converter and sensor bias circuitry. Use Value: Survives repeated 200A surge pulses (8.3ms) without parametric shift, ensuring long-term field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC20-13-F | Same VRWM (20V), lower PPK (600W), higher VC (34.0V @ 35.3A) | Limited to lower-energy transients (e.g., ISO10605 only); not rated for ISO7637-2 Pulse 1 | Select when cost sensitivity outweighs full automotive surge coverage and board space allows larger footprint. |
| 1.5SMC20A | Same SMC package, identical VRWM/VC/IPP, but lacks AEC-Q101 qualification and IATF 16949 traceability | Restricted to industrial or consumer applications; not acceptable for OEM automotive PPAP submission | Use only in non-automotive designs where qualification documentation is not required. |
Compared with SAC20-13-F and 1.5SMC20A, SMCJ20AQ-13-F uniquely combines 1500W surge capacity, AEC-Q101 validation, and production traceability-making it the sole choice for safety-critical 12V automotive power rails requiring ISO7637-2 compliance.
Availability
SMCJ20AQ-13-F is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, body control modules, and infotainment head units requiring stable component supply across multi-year automotive production cycles.
Supply support for SMCJ20AQ-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, manufacturing, and test facilities certified to IATF 16949 and AEC-Q101 standards.
The SMCJ series is engineered specifically for automotive transient suppression, targeting ISO7637-2 and ISO10605 compliance in harsh environment ECUs, sensors, and communication interfaces.
FAQ
What is the maximum operating temperature for SMCJ20AQ-13-F?
The junction temperature range is -55°C to +150°C, with steady-state power derating beginning above +75°C lead temperature. At +125°C ambient, its peak pulse power drops to ~750W per Fig. 1 derating curve, maintaining clamping performance within spec.
Is SMCJ20AQ-13-F bidirectional or unidirectional?
SMCJ20AQ-13-F is unidirectional, indicated by the absence of "C" in the part number. It clamps only reverse-voltage transients (anode-to-cathode), with cathode tied to ground. Bidirectional versions carry the "C" suffix (e.g., SMCJ20CAQ-13-F).
How does SMCJ20AQ-13-F differ from standard SMCJ20A?
The "Q" suffix denotes AEC-Q101 qualification and PPAP capability; "-13-F" specifies SMC package in 3,000-piece tape-and-reel. Standard SMCJ20A lacks automotive qualification, traceability, and IATF 16949 manufacturing controls required for OEM deployment.
Can SMCJ20AQ-13-F be used in 24V systems?
Yes-it is commonly deployed on 24V commercial vehicle power rails. Its 20V VRWM provides adequate margin above nominal 24V (typically 27–28V max during charging), and its 32.4V clamping voltage remains below the 36V absolute maximum rating of most 24V-rated DC/DC controllers.
SMCJ20AQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 46.3A
- 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
SMCJ20AQ-13-F FAQ
1.How can I place an order for SMCJ20AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ20AQ-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 SMCJ20AQ-13-F reliable?
The price and inventory of SMCJ20AQ-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 SMCJ20AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMCJ20AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ20AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ20AQ-13-F?
SMCJ20AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ20AQ-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 SMCJ20AQ-13-F?
For technical support, including SMCJ20AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ20AQ-13-F requirements.
6.How does Aetrix verify that SMCJ20AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMCJ20AQ-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 SMCJ20AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMCJ20AQ-13-F?
All SMCJ20AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ20AQ-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 SMCJ20AQ-13-F part is unused and in its original packaging.
Return procedure for SMCJ20AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ20AQ-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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