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Diodes Incorporated SMBJ7.5A-13-F
- Part No.:
- SMBJ7.5A-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.5A-13-F.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:32,977
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Product details
Overview
SMBJ7.5A-13-F from Diodes Incorporated is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with 7.5V reverse standoff voltage, 8.33V minimum breakdown voltage at 1.0mA test current, and 12.9V maximum clamping voltage at 46.5A peak pulse current. It provides robust ESD and surge protection for DC power rails and low-voltage signal lines in industrial control modules and automotive body electronics.
For engineers reviewing the SMBJ7.5A-13-F datasheet, SMBJ7.5A-13-F pinout, SMBJ7.5A-13-F application, or SMBJ7.5A-13-F equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse current capability under IEC 61000-4-5 8/20μs waveform, thermal derating above +25°C, and compatibility with SMB package reflow profiles.
Technical Context
This TVS diode operates as a fast-acting shunt clamp during overvoltage transients, leveraging avalanche breakdown to divert surge current away from sensitive downstream circuitry. Its glass-passivated die ensures stable breakdown characteristics and long-term reliability under repeated surge stress.
The device exhibits 100μA maximum reverse leakage at 7.5V standoff and achieves full clamping response within <1ns, with thermal resistance RθJA of 125°C/W enabling operation up to +150°C junction temperature when mounted on standard 1-inch² copper pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - Sustains single 8.3ms half-sine surge without failure per IEC 61000-4-5 Level 4 |
| Reverse Standoff Voltage | 7.5V - Maximum continuous DC voltage before significant leakage; sets upper limit for protected rail |
| Breakdown Voltage | 8.33–9.58V @ 1.0mA - Confirmed avalanche onset range; ensures reliable triggering before system damage |
| Clamping Voltage | 12.9V @ 46.5A - Maximum voltage seen by protected circuit during worst-case surge event |
| Package | SMB - Standard surface-mount outline (5.59mm × 4.57mm × 2.21mm) compatible with automated assembly |
| Operating Temperature | −55°C to +150°C - Validated performance across extended industrial and automotive ambient ranges |
Pinout & Package
Package: SMB (Surface-Mount Small Outline), molded plastic case rated UL 94V-0, 0.1g mass, matte tin-plated terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge return path | Connected to ground or low-impedance reference plane; carries full transient current during clamping |
| Cathode | Protected line connection | Connected to line being safeguarded (e.g., 5V rail); polarity-sensitive for unidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse rating | Enables compliance with IEC 61000-4-5 surge immunity requirements up to 4kV (line-earth) |
| Glass-passivated die | Eliminates moisture-induced parameter drift and improves long-term stability under humid environments |
| Lead-free & RoHS-compliant | Meets EU Directive 2011/65/EU and supports Pb-free reflow profiles (JEDEC J-STD-020 Level 1) |
| Low clamping ratio (VC/VRWM = 1.72) | Minimizes overvoltage stress on protected ICs while maintaining sufficient margin above nominal rail |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Protects 5V CAN transceiver power supply against load dump and ISO 7637-2 pulse 5a transients. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between VCC and GND, triggered within nanoseconds of overvoltage onset. Use Value: Limits voltage excursion to ≤12.9V during 46.5A surge, preventing latch-up or permanent damage to transceiver silicon. |
Use Scenario: Safeguards microcontroller GPIO pins connected to door lock actuators exposed to ESD and relay coil flyback. IC Role / Device Role / Timing Role: Localized TVS at connector interface, absorbing ±15kV HBM ESD events per IEC 61000-4-2. Use Value: Maintains sub-100nA leakage at 7.5V, avoiding false wake-ups or increased quiescent current in sleep mode. |
| Smart Meter Power Supply | POS Terminal Serial Interface |
Use Scenario: Shields AC/DC converter output stage from lightning-induced surges on utility grid-connected inputs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12V auxiliary rail feeding metering IC and RTC. Use Value: Withstands 100A surge (derated) at 85°C ambient via thermal design using 1-inch² copper pour. |
Use Scenario: Protects RS-232 transceiver data lines against EFT bursts and cable discharge events in retail environments. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; unidirectional configuration avoids signal distortion on asymmetric logic levels. Use Value: 12.9V clamping ensures RS-232 driver outputs remain within −15V to +15V spec during transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A-13-F | Lower VRWM (7.0V), lower VBR min (7.78V), identical 600W rating | Better suited for 3.3V systems with tighter clamping margin; higher leakage (200μA vs. 100μA) | Select when protecting 3.3V rails where 7.5V standoff risks premature conduction during ripple |
| SMBJ8.0A-13-F | Higher VRWM (8.0V), higher VBR min (8.89V), same SMB package and 600W rating | Provides larger margin against normal-mode noise on 5V rails; slightly higher clamping (13.6V) | Choose for 5V systems requiring >0.5V headroom above nominal rail to avoid false triggering |
Compared with SMBJ7.0A-13-F and SMBJ8.0A-13-F, SMBJ7.5A-13-F offers optimal balance for 5V applications: sufficient standoff to ignore typical 5% tolerance ripple while delivering lowest clamping voltage (12.9V) among adjacent voltage grades.
Availability
SMBJ7.5A-13-F is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, smart meter power supplies, and POS terminal serial interfaces requiring stable component supply and consistent surge performance across production batches.
Supply support for SMBJ7.5A-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 protection, power management, and signal integrity solutions for industrial and automotive markets.
SMBJ7.5A-13-F belongs to Diodes' SMBJ series of transient voltage suppressors, engineered specifically for robust, cost-effective board-level surge and ESD protection in space-constrained surface-mount designs.
FAQ
What is the maximum allowable PCB trace length between SMBJ7.5A-13-F and the protected IC?
Trace inductance directly impacts clamping effectiveness. For optimal performance, keep the anode-to-ground and cathode-to-rail traces under 5mm total length with minimum 0.5mm width. Longer traces increase voltage overshoot during fast transients due to L·di/dt effects, potentially exceeding the protected IC's absolute maximum rating even if clamping voltage is within spec.
Can SMBJ7.5A-13-F be used in bidirectional configurations?
No - SMBJ7.5A-13-F is unidirectional only, indicated by the absence of "C" suffix. Bidirectional operation requires SMBJ7.5CA-13-F, which has symmetrical breakdown in both polarities and no cathode band marking. Using the unidirectional part in reverse-biased AC applications will result in immediate failure during negative half-cycles.
How does thermal derating affect SMBJ7.5A-13-F's surge capability at 100°C ambient?
At +100°C ambient, the device's peak pulse power is derated to 450W (75% of 600W) per the 4.8W/°C derating curve. This reduces maximum sustainable IPP to ~34.7A at 12.9V clamping. Designers must verify that expected surge energy remains below this threshold or implement additional thermal relief (e.g., larger copper area).
Is SMBJ7.5A-13-F compliant with AEC-Q200 for automotive use?
No - SMBJ7.5A-13-F is qualified to commercial temperature grade (−55°C to +150°C) but is not AEC-Q200 stress-tested. For automotive applications requiring qualification, Diodes offers the automotive-grade P6SMBJ7.5A-13-F variant, which undergoes temperature cycling, humidity bias, and mechanical shock testing per AEC-Q200 Rev D.
SMBJ7.5A-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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 46.5A
- 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
SMBJ7.5A-13-F FAQ
1.How can I place an order for SMBJ7.5A-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.5A-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 SMBJ7.5A-13-F reliable?
The price and inventory of SMBJ7.5A-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 SMBJ7.5A-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ7.5A-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.5A-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.5A-13-F?
SMBJ7.5A-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.5A-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 SMBJ7.5A-13-F?
For technical support, including SMBJ7.5A-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.5A-13-F requirements.
6.How does Aetrix verify that SMBJ7.5A-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ7.5A-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 SMBJ7.5A-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ7.5A-13-F?
All SMBJ7.5A-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.5A-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 SMBJ7.5A-13-F part is unused and in its original packaging.
Return procedure for SMBJ7.5A-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.5A-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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Diodes Incorporated
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Diodes Incorporated
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