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Diodes Incorporated SMCJ12AQ-13-F
- Part No.:
- SMCJ12AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ12AQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,990
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Product details
Overview
SMCJ12AQ-13-F from Diodes Incorporated is a unidirectional 1,500W automotive transient voltage suppressor (TVS) diode with 12V reverse standoff voltage, 19.9V max clamping voltage at 75.3A peak pulse current, and AEC-Q101 qualification for under-hood power line protection in ISO7637-2 Pulse 1/2a/3a/3b-compliant vehicle ECUs.
For engineers reviewing the SMCJ12AQ-13-F datasheet, SMCJ12AQ-13-F pinout, SMCJ12AQ-13-F application, or SMCJ12AQ-13-F equivalent, this TVS diode delivers verified surge immunity for 12V battery rail interfaces, meets ISO10605 ESD requirements up to ±30kV, and supports high-reliability automotive design with IATF 16949 manufacturing traceability.
Technical Context
This unidirectional TVS operates as a clamping device across DC power rails, activating when transient voltage exceeds its 12V VRWM and limiting downstream voltage to ≤19.9V during 10/1000μs surges. Its glass-passivated junction ensures stable breakdown behavior over temperature (-55°C to +150°C operating range).
Designed specifically for automotive environments, it withstands repetitive 8.3ms half-sine surges up to 200A and maintains <5μA leakage at VRWM. The SMC package provides thermal robustness with 5W steady-state dissipation at TL = +75°C and UL 94V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - sustains single 10/1000μs transients without failure |
| Reverse Standoff Voltage | 12V - blocks normal 12V system operation while remaining inactive |
| Max Clamping Voltage | 19.9V @ 75.3A - limits protected circuit voltage during worst-case ISO7637-2 Pulse 1 (-100V) |
| Breakdown Voltage | 13.3–14.7V @ 1mA - ensures reliable turn-on margin above VRWM |
| Leakage Current | ≤5μA @ 12V - avoids parasitic loading on low-power automotive sensors |
| Operating Temperature | -55°C to +150°C - supports engine bay placement per AEC-Q101 stress testing |
Pinout & Package
Package: SMC (DO-214AB), molded plastic body with UL 94V-0 rating, cathode band polarity indicator, 0.21g mass, and matte tin lead finish compliant with MIL-STD-202 soldering standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path for clamping current |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., battery feed); cathode band marks this pin |
Key Features
| Feature | Design Value |
|---|---|
| 1,500W peak pulse rating | Enables single-device protection against ISO7637-2 Pulse 1 (-100V) and Pulse 3a (-150V) without derating |
| AEC-Q101 qualification | Validated for automotive use with PPAP documentation support and IATF 16949 production control |
| Glass-passivated die | Ensures consistent VBR stability across temperature and long-term reliability in humid under-hood conditions |
| Fast response time | Clamps within picoseconds-prevents voltage overshoot before sensitive CAN/LIN transceivers or microcontrollers are damaged |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protecting 12V supply inputs of BCM microcontrollers and LIN transceivers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed directly at power entry point before LDO regulators. Use Value: Limits voltage to ≤19.9V during ISO7637-2 Pulse 2a (+50V), preventing brownout resets and latch-up in 3.3V logic domains. |
Use Scenario: Safeguarding fuel injector driver ICs and crankshaft position sensor interfaces against cranking transients and ignition noise. IC Role / Device Role / Timing Role: Primary surge suppression on main battery rail upstream of DC-DC converters. Use Value: Withstands 200A 8.3ms surges per ISO7637-2 Pulse 5a, maintaining system uptime during cold-start events. |
| Infotainment Head Unit | ADAS Camera Module |
Use Scenario: Shielding USB-C and HDMI power lines from ESD events during hot-plug insertion in vehicle cabins. IC Role / Device Role / Timing Role: Secondary-level TVS after primary fuse, targeting fast-rising ESD pulses per ISO10605. Use Value: Clamps ±30kV air/contact discharge to <20V within nanoseconds, preserving signal integrity of high-speed data links. |
Use Scenario: Protecting 12V bias supply of CMOS image sensors and serializer ICs in rear-view cameras exposed to road splash and vibration. IC Role / Device Role / Timing Role: Low-leakage (≤5μA) TVS mounted adjacent to connector to minimize PCB trace inductance. Use Value: Prevents sensor latch-up during ISO7637-2 Pulse 3b (+100V) induced by relay switching in nearby modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC12-01A-E3/54 (Vishay) | Same 12V VRWM and 19.9V VC, but lower 1,000W PPK rating and no AEC-Q101 certification | Limited to non-safety-critical interior modules; not approved for engine bay deployment | Select only for cost-sensitive cabin applications where full AEC-Q101 compliance is not mandated |
| 1.5KE12A (ON Semiconductor) | Higher 22.5V clamping voltage at same current, larger DO-201 package, and no automotive qualification | Requires board redesign due to different footprint and thermal derating profile | Use only for legacy industrial designs; avoid in new automotive programs requiring PPAP or IATF 16949 traceability |
Compared with SAC12-01A-E3/54 and 1.5KE12A, SMCJ12AQ-13-F delivers higher surge robustness (1500W vs. 1000W/1500W with inferior clamping), guaranteed automotive qualification, and SMC package compatibility with automated SMT assembly-making it the preferred choice for new ECU and ADAS designs.
Availability
SMCJ12AQ-13-F is available at Aetrix Electronics and suitable for automotive electronic control units, body electronics modules, and ADAS camera systems requiring stable component supply with full AEC-Q101 traceability and IATF 16949 manufacturing assurance.
Supply support for SMCJ12AQ-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 manufacturing certified to IATF 16949 and AEC-Q101 test standards.
The SMCJ series is engineered for automotive-grade transient suppression, targeting ISO7637-2 and ISO10605 compliance in power distribution networks where reliability under extreme thermal and electrical stress is mandatory.
FAQ
Is SMCJ12AQ-13-F bidirectional or unidirectional?
SMCJ12AQ-13-F is unidirectional, indicated by the absence of "C" in the part number suffix. It conducts only during negative transients on the cathode side and blocks positive voltage beyond VRWM. Bidirectional versions carry the "C" suffix (e.g., SMCJ12CAQ-13-F) and lack a cathode band marking.
What is the maximum allowable mounting temperature during reflow soldering?
The SMCJ12AQ-13-F SMC package is rated for moisture sensitivity level 1 per J-STD-020, permitting peak reflow temperatures up to 260°C for 30 seconds. Its matte tin plating ensures compatibility with standard Pb-free solder profiles and meets MIL-STD-202 Method 208 solderability requirements.
Does this TVS diode require a heatsink for 5W continuous dissipation?
No external heatsink is required. The 5W steady-state rating applies at TL = +75°C (lead temperature), achievable through standard 1oz copper PCB pads per Diodes' recommended SMC pad layout (X1 = 9.40mm, Y = 3.30mm). Derating begins above +75°C ambient per Fig. 6 in DS40741.
Can SMCJ12AQ-13-F replace SMCJ12A in non-automotive designs?
Yes, electrically identical-both share 12V VRWM, 19.9V VC, and SMC package-but SMCJ12AQ-13-F adds AEC-Q101 qualification, PPAP capability, and IATF 16949 manufacturing controls. For non-automotive use, the "Q" suffix offers no functional benefit but guarantees tighter process controls and lot traceability.
SMCJ12AQ-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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 75.3A
- 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
SMCJ12AQ-13-F FAQ
1.How can I place an order for SMCJ12AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ12AQ-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 SMCJ12AQ-13-F reliable?
The price and inventory of SMCJ12AQ-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 SMCJ12AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMCJ12AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ12AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ12AQ-13-F?
SMCJ12AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ12AQ-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 SMCJ12AQ-13-F?
For technical support, including SMCJ12AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ12AQ-13-F requirements.
6.How does Aetrix verify that SMCJ12AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMCJ12AQ-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 SMCJ12AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMCJ12AQ-13-F?
All SMCJ12AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ12AQ-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 SMCJ12AQ-13-F part is unused and in its original packaging.
Return procedure for SMCJ12AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ12AQ-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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