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Diodes Incorporated 3.0SMCJ120AQ-13
- Part No.:
- 3.0SMCJ120AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ120AQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,736
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Product details
Overview
3.0SMCJ120AQ-13 from Diodes Incorporated is a unidirectional 120V standoff, 3000W peak pulse power transient voltage suppressor (TVS) in SMC package, with 193V max clamping voltage at 15.5A peak pulse current and 5µA max reverse leakage at VRWM. It provides ESD protection per IEC-61000-4-2 (30kV air/contact), HBM 8kV, and operates from –55°C to +150°C. Used for automotive power rail surge suppression in engine control units.
For engineers reviewing the 3.0SMCJ120AQ-13 datasheet, 3.0SMCJ120AQ-13 pinout, 3.0SMCJ120AQ-13 application, or 3.0SMCJ120AQ-13 equivalent, key selection criteria include clamping voltage margin vs. system rail, peak pulse current capability under 10/1000µs waveform, thermal derating above +25°C, and AEC-Q101 qualification status for automotive deployment.
Technical Context
This TVS diode employs glass-passivated silicon junction construction to achieve precise breakdown voltage tolerance (133–147V at 1mA test current) and stable clamping performance across temperature. Its unidirectional polarity enables DC-biased line protection with cathode-band identification.
The device meets JEDEC high-reliability standards and is qualified to AEC-Q101 for automotive use, with IATF 16949 manufacturing, moisture sensitivity level 1, and RoHS 3 / "Green" compliance (Br+Cl <1500ppm, Sb <1000ppm). Thermal derating follows a defined curve: 100% PPK at +25°C, linearly reduced to ~50% at +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10×1000µs transients without failure; defines maximum energy absorption capability |
| Reverse Standoff Voltage (VRWM) | 120V - maximum continuous DC or RMS voltage the device blocks before entering avalanche conduction |
| Breakdown Voltage (VBR) | 133–147V @ 1mA - guaranteed avalanche initiation range; ensures reliable turn-on before system damage |
| Max Clamping Voltage (VC) | 193V @ 15.5A - upper voltage limit seen by protected circuit during worst-case 10×1000µs surge |
| Peak Pulse Current (IPP) | 15.5A - maximum non-repetitive surge current supported under standard 10×1000µs waveform |
| ESD Rating | 30kV air/contact per IEC-61000-4-2 - withstands electrostatic discharge events typical in assembly and field handling |
| Operating Temperature | –55°C to +150°C - supports under-hood automotive environments and industrial power supply designs |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic body with UL 94V-0 flammability rating; weight ≈0.21g; terminals matte tin-plated for solderability per MIL-STD-202, Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked band) | Anode-to-cathode polarity reference | Identifies cathode terminal; connects to protected line's positive side in unidirectional configuration |
| Anode | Return path for surge current | Connects to ground or low-impedance return; completes clamping path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Ensures stable VBR and low leakage over lifetime; resists humidity-induced parameter drift |
| AEC-Q101 qualification | Validated for automotive applications including engine control, battery management, and ADAS power rails |
| Lead-free & halogen-free | Complies with RoHS 3 and Diodes' "Green" definition (Br+Cl <1500ppm, Sb <1000ppm) |
| Moisture Sensitivity Level 1 | Zero floor life limitation; no baking required prior to reflow soldering |
| High clamping ratio (VC/VRWM = 1.61) | Minimizes overvoltage stress on downstream ICs while maintaining robust margin above operating rail |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Power Input |
|---|---|
Use Scenario: Protects 12V/24V supply lines in engine control modules against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input stage to clamp surges before regulator ICs. Use Value: Withstands 3000W pulses and maintains clamping below 193V, preventing latch-up or destruction of automotive-grade microcontrollers and CAN transceivers. |
Use Scenario: Shields programmable logic controller main power entry from induced lightning surges and switching transients in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage protector on AC/DC rectified output or DC bus input, coordinated with upstream fuses. Use Value: 15.5A IPP and 193V VC ensure compatibility with IEC 61000-4-5 Level 4 (4kV/2Ω) surge testing requirements for industrial equipment. |
| Telecom Base Station Power Supply | EV On-Board Charger (OBC) DC Link |
Use Scenario: Guards 48V telecom power distribution boards against ESD and fast-rising transients from hot-swap connectors and relay switching. IC Role / Device Role / Timing Role: Point-of-load TVS on intermediate bus rails feeding FPGAs, PHYs, and PMICs. Use Value: 30kV IEC-61000-4-2 rating and 5µA IR at 120V enable long-term reliability in high-density, thermally constrained telecom chassis. |
Use Scenario: Protects high-voltage DC link (e.g., 400V nominal) in electric vehicle on-board chargers from inductive kickback during MOSFET switching. IC Role / Device Role / Timing Role: Secondary clamping device parallel to bulk capacitors, absorbing residual energy not handled by primary MOVs. Use Value: 133–147V VBR and 193V VC provide precise coordination with 120V-rated gate drivers and isolated feedback circuits in OBC auxiliary supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A | Same 120V VRWM but lower 600W PPK; SMB package (smaller footprint, lower thermal mass) | Limited to lower-energy surges; unsuitable for load dump or ISO 7637-2 Pulse 5a | Select when space-constrained and surge energy ≤600W; verify thermal dissipation in PCB layout |
| 1.5SMC120A | Same 120V VRWM but only 1500W PPK; identical SMC package but lower surge rating | Cannot meet 3000W requirement for automotive load dump; requires parallel devices for equivalent energy handling | Use only in cost-sensitive industrial applications where full 3000W margin is not mandated |
Compared with SMBJ120A and 1.5SMC120A, the 3.0SMCJ120AQ-13 delivers double the peak pulse power in the same SMC footprint, enabling single-device compliance with stringent automotive surge standards without layout redesign or paralleling complexity.
Availability
3.0SMCJ120AQ-13 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC power protection, and EV on-board charger development requiring stable component supply and AEC-Q101 traceability.
Supply support for 3.0SMCJ120AQ-13 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The 3.0SMCJ series belongs to Diodes' high-power TVS portfolio, engineered specifically for automotive and industrial surge immunity-emphasizing AEC-Q101 qualification, tight VBR tolerance, and consistent clamping under thermal stress.
FAQ
Is 3.0SMCJ120AQ-13 AEC-Q101 qualified?
Yes, the "Q" suffix denotes AEC-Q101 qualification. This part is manufactured in IATF 16949-certified facilities, tested per AEC-Q101 stress conditions, and documented for automotive use in engine control, body electronics, and powertrain systems. Full qualification reports are available upon request for qualified customers.
What is the difference between 3.0SMCJ120A and 3.0SMCJ120AQ-13?
The "Q" suffix indicates AEC-Q101 qualification and automotive change control; the "-13" denotes tape-and-reel packaging (3000 pcs/reel). Electrically and physically identical, the Q-version includes additional automotive-specific testing, lot traceability, and PPAP documentation support not present in the standard A-grade part.
Can 3.0SMCJ120AQ-13 be used in bidirectional configurations?
No-it is a unidirectional TVS with cathode band marking. Bidirectional protection requires the "C" variant (e.g., 3.0SMCJ120CA-13), which lacks polarity marking and clamps symmetrically for AC or floating-line applications. Using this part in reverse-biased AC circuits risks permanent breakdown.
How does thermal derating affect 3.0SMCJ120AQ-13's 3000W rating?
Per Figure 1 in DS30818, peak pulse power drops linearly from 100% at +25°C to ~50% at +125°C ambient. At +100°C, it delivers ~65% of rated power (≈1950W); PCB copper area and airflow must be designed accordingly to avoid exceeding junction temperature limits during repetitive surge events.
3.0SMCJ120AQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- 3.0SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 120V
- Voltage - Breakdown (Min):
- 133V
- Voltage - Clamping (Max) @ Ipp:
- 193V
- Current - Peak Pulse (10/1000µs):
- 15.5A
- Power - Peak Pulse:
- 3000W (3kW)
- 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
3.0SMCJ120AQ-13 FAQ
1.How can I place an order for 3.0SMCJ120AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ120AQ-13 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 3.0SMCJ120AQ-13 reliable?
The price and inventory of 3.0SMCJ120AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ120AQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ120AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ120AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ120AQ-13?
3.0SMCJ120AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ120AQ-13 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 3.0SMCJ120AQ-13?
For technical support, including 3.0SMCJ120AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ120AQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ120AQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ120AQ-13 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 3.0SMCJ120AQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ120AQ-13?
All 3.0SMCJ120AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ120AQ-13, 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 3.0SMCJ120AQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ120AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ120AQ-13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
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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