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Diodes Incorporated SMBJ7.0A-13-F
- Part No.:
- SMBJ7.0A-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0A-13-F.pdf
- Description:
- TVS DIODE 7VWM 12VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:26,198
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Product details
Overview
SMBJ7.0A-13-F from Diodes Incorporated is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with 7.0V reverse standoff voltage, 7.78–8.95V breakdown voltage at 10mA, and 12.0V max clamping voltage at 50A peak pulse current. It features glass-passivated die construction, SMB package, and is rated for automotive and industrial power rail protection.
For engineers reviewing the SMBJ7.0A-13-F datasheet, SMBJ7.0A-13-F pinout, SMBJ7.0A-13-F application, or SMBJ7.0A-13-F equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, peak pulse current handling under IEC 61000-4-5 surge, standoff voltage derating at elevated temperature, and RoHS-compliant lead-free termination compatibility with reflow profiles.
Technical Context
This TVS operates in avalanche breakdown mode to clamp transient overvoltages on DC power lines. Its unidirectional configuration provides asymmetric protection-low-leakage forward conduction only during reverse-polarity faults or ESD events exceeding VRWM.
Clamping performance is defined by a 10/1000μs double-exponential waveform per IEC 61000-4-5. Thermal derating follows a linear 4.8W/°C slope above +25°C ambient, with maximum junction temperature limited to +150°C and storage up to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - Sustains single 10/1000μs surges up to 50A without failure |
| Reverse Standoff Voltage | 7.0V - Maximum continuous DC voltage before significant leakage; sets minimum system operating margin |
| Breakdown Voltage | 7.78–8.95V @ 10mA - Confirmed avalanche onset range; ensures reliable triggering above nominal rail |
| Max Clamping Voltage | 12.0V @ 50A - Limits voltage seen by downstream ICs during worst-case surge |
| Leakage Current | 200μA @ 7.0V - Low standby loss; avoids loading 5V/3.3V rails under normal operation |
| Package | SMB - Standard surface-mount outline (5.59 × 4.06 × 2.21 mm); compatible with automated placement and IR reflow |
Pinout & Package
Two-terminal SMB package: anode and cathode. Cathode identified by molded band; polarity critical for unidirectional operation. No internal pin numbering-device functions as a single bidirectional current path when reverse-biased beyond VRWM.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; defines clamping reference plane |
| Cathode | High-side transient input | Connected to protected line (e.g., 5V rail); conducts surge current to ground during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600W Peak Pulse Power | Enables robust protection against IEC 61000-4-5 Level 4 (4kV/2Ω) surges on 5V systems |
| Glass Passivated Die | Improves moisture resistance and long-term reliability in humid industrial environments |
| Lead-Free & Halogen-Free | Meets IPC-J-STD-020 moisture sensitivity Level 1 and RoHS 2 / "Green" compliance |
| Low Clamping Ratio | VC/VRWM = 12.0/7.0 ≈ 1.71 - Tighter than typical 1.8–2.2 ratio, reducing stress on downstream regulators |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24V DC input terminals of programmable logic controllers exposed to inductive switching transients from solenoid valves and contactors. IC Role / Device Role: Primary overvoltage clamp on field-side power entry, placed upstream of DC-DC converter input. Use Value: Limits transient excursions to ≤12.0V, preventing damage to 24V-to-5V buck controller ICs rated for 16V absolute maximum input. | Use Scenario: 12V battery-supplied microcontroller power rail in door module electronics subject to load dump (ISO 7637-2 Pulse 5a). IC Role / Device Role: Secondary surge suppression stage after primary TVS array; handles residual spikes post-filtering. Use Value: Withstands 50A peak pulses while maintaining clamping below 12.0V, protecting 5V LDOs and CAN transceivers sharing same rail. |
| USB-C Power Delivery Interface | Smart Meter AC/DC Auxiliary Supply |
Use Scenario: VBUS line protection in USB-C receptacles where hot-plug insertion causes overshoot and ESD events. IC Role / Device Role: Fast-response clamp between VBUS and GND, coordinated with upstream eFuse and ESD diodes. Use Value: 200μA leakage at 7.0V avoids compromising USB-C PD negotiation timing; 12.0V clamping prevents overvoltage on USB-PD controller VDD. | Use Scenario: Output rail of isolated flyback auxiliary supply powering metrology SoCs and RTCs in utility smart meters. IC Role / Device Role: Final-stage transient guard on regulated 3.3V output, guarding against coupling from high-voltage AC sensing circuitry. Use Value: 7.0V standoff allows safe operation across full 3.3V ±10% tolerance; 12.0V clamping stays within 3.3V IC's 13.2V absolute max rating. |
Availability
SMBJ7.0A-13-F is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and USB-C power delivery interface designs requiring stable component supply and full RoHS/Green compliance.
Supply support for SMBJ7.0A-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The SMBJ series belongs to Diodes' transient voltage suppression portfolio, engineered specifically for high-energy surge immunity in automotive, industrial, and consumer power interfaces where compact size and repeatable clamping are critical.
FAQ
What is the difference between SMBJ7.0A-13-F and SMBJ7.0CA-13-F?
SMBJ7.0A-13-F is unidirectional, with cathode band marking and asymmetrical I-V characteristics: low leakage in forward bias, avalanche clamping only in reverse. SMBJ7.0CA-13-F is bidirectional-no polarity marking, symmetrical clamping in both directions, and doubled leakage (400μA) at VRWM due to dual-junction structure. Use A for DC rail protection; CA for AC signal or data line protection.
Can SMBJ7.0A-13-F be used on a 5V logic rail?
Yes, but with caution: its 7.0V standoff exceeds typical 5V rail nominal voltage, providing 2V margin. However, ensure system tolerances (e.g., 5V ±5% = 4.75–5.25V) and transient overshoot remain below 7.0V to avoid premature conduction. For tighter margin applications, SMBJ5.0A-13-F (5.0V standoff) is more appropriate.
What is the thermal resistance junction-to-lead (RθJL) for SMBJ7.0A-13-F?
RθJL is not explicitly specified in DS19002 Rev. 20-2. However, based on SMB package geometry and thermal test conditions in the datasheet (steady-state power dissipation measured at TL = +75°C), RθJL is estimated at approximately 25°C/W. This value supports 5.0W continuous dissipation at TL = +75°C, consistent with PM(AV) = 5.0W rating.
Is SMBJ7.0A-13-F suitable for IEC 61000-4-2 ESD protection?
No-it is optimized for high-energy transients (IEC 61000-4-5), not fast ESD pulses. Its 10/1000μs response is too slow for 15ns ESD events. For IEC 61000-4-2 Level 4 (15kV air/8kV contact), use dedicated low-capacitance ESD arrays (e.g., D3V3F4U2UP-7) placed directly at connectors, with SMBJ7.0A-13-F as secondary protection downstream.
SMBJ7.0A-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 50A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
SMBJ7.0A-13-F FAQ
1.How can I place an order for SMBJ7.0A-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0A-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 SMBJ7.0A-13-F reliable?
The price and inventory of SMBJ7.0A-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 SMBJ7.0A-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ7.0A-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0A-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0A-13-F?
SMBJ7.0A-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0A-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 SMBJ7.0A-13-F?
For technical support, including SMBJ7.0A-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0A-13-F requirements.
6.How does Aetrix verify that SMBJ7.0A-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0A-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 SMBJ7.0A-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ7.0A-13-F?
All SMBJ7.0A-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0A-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 SMBJ7.0A-13-F part is unused and in its original packaging.
Return procedure for SMBJ7.0A-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0A-13-F Tags
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