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Diodes Incorporated SMBJ8.0A-13-F
- Part No.:
- SMBJ8.0A-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0A-13-F.pdf
- Description:
- TVS DIODE 8VWM 13.6VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
SMBJ8.0A-13-F from Diodes Incorporated is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with 8.0V reverse standoff voltage, 8.89–10.23V breakdown voltage at 1.0mA, 13.6V max clamping voltage at 44.1A peak pulse current, and SMB package. It protects DC power rails and I/O lines in industrial power supplies and automotive control modules against ESD and lightning-induced surges.
For engineers reviewing the SMBJ8.0A-13-F datasheet, SMBJ8.0A-13-F pinout, SMBJ8.0A-13-F application, or SMBJ8.0A-13-F equivalent, key selection criteria include clamping voltage margin relative to system operating voltage, peak pulse current capability under 8.3ms surge, unidirectional polarity requirement, and SMB footprint compatibility with board-level surge protection layouts.
Technical Context
This TVS diode operates as a fast-acting shunt clamp, entering avalanche conduction when reverse voltage exceeds VRWM = 8.0V and clamping transients to ≤13.6V at IPP = 44.1A. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<50µA at VRWM).
The device complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) immunity standards. Thermal derating follows 4.8W/°C above +25°C ambient, with maximum junction temperature of +150°C and storage range up to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - Sustains single 8.3ms half-sine surge without failure |
| Reverse Standoff Voltage | 8.0V - Maximum continuous DC voltage before significant leakage |
| Breakdown Voltage | 8.89–10.23V @ 1.0mA - Confirmed avalanche onset range for reliable triggering |
| Max Clamping Voltage | 13.6V @ 44.1A - Limits downstream voltage stress during worst-case surge |
| Peak Pulse Current | 44.1A - Withstands IEC 61000-4-5 Level 4 (4kV/2Ω) surge current |
| Leakage Current | ≤50µA @ 8.0V - Ensures minimal standby power loss in always-on circuits |
| Package | SMB - Standard surface-mount outline (5.59 × 4.06 × 2.21 mm) with cathode band marking |
Pinout & Package
Package: SMB (Surface-Mount Small Outline), molded plastic case rated UL 94V-0, 0.1g weight, matte tin-plated terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during reverse surge | Connected to protected line; conducts avalanche current to ground |
| Cathode | Reference terminal (marked by band) | Connected to system ground; defines unidirectional polarity orientation |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse rating | Enables robust protection against IEC 61000-4-5 4kV surge events without thermal runaway |
| Glass-passivated die construction | Ensures long-term parameter stability and resistance to humidity-induced degradation |
| Lead-free, RoHS-compliant finish | Meets global environmental regulations and supports lead-free reflow soldering profiles |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage exposure to downstream ICs while maintaining margin above VRWM |
| Moisture sensitivity level 1 | Eliminates need for dry-pack handling or baking prior to assembly |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24V DC input channels on programmable logic controller backplanes exposed to inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between field wiring and signal conditioning circuitry. Use Value: Limits transient voltage to ≤13.6V, preserving integrity of 3.3V/5V microcontroller inputs and analog front-end components. |
Use Scenario: LIN bus and sensor supply lines in body control units subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on 12V rail feeding door module sensors and actuators. Use Value: Absorbs 44.1A surge current within 1ns response time, preventing latch-up or permanent damage to CAN/LIN transceivers. |
| DC Power Supply Input Stage | USB Type-C Port ESD Protection |
Use Scenario: Secondary-side 5V/12V outputs of AC-DC adapters vulnerable to conducted surges from upstream rectifier stages. IC Role / Device Role / Timing Role: Final-stage clamping device located immediately before connector or downstream regulator. Use Value: Maintains output regulation by clamping overshoots below 13.6V, avoiding brownout or reset conditions in connected devices. |
Use Scenario: VBUS line protection in USB-C receptacles where hot-plug events generate >8kV HBM ESD. IC Role / Device Role / Timing Role: First-line defense against electrostatic discharge before USB PD controller ICs. Use Value: Sub-1ns response and 50µA leakage ensure no impact on USB 3.1 signal integrity while meeting IEC 61000-4-2 Level 4 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA-13-F | Bi-directional variant; symmetric clamping for AC-coupled or floating lines | Required for differential buses (e.g., RS-485) or dual-polarity supplies | Select only if bidirectional surge protection is needed; otherwise unidirectional SMBJ8.0A offers lower leakage and tighter VBR tolerance |
| SMAJ8.0A-13-F | Lower 400W peak power rating; same VRWM, but 15.0V clamping at 26.7A | Suitable for lower-energy transients (e.g., IEC 61000-4-2 only) | Choose when cost or board space is constrained and surge threat level is limited to ESD-only environments |
Compared with SMBJ8.0CA-13-F and SMAJ8.0A-13-F, SMBJ8.0A-13-F delivers optimal balance of high-energy surge handling (600W), tight clamping (13.6V), and low leakage (50µA), making it preferred for industrial and automotive DC rail protection where unidirectional polarity is fixed and surge severity exceeds 2kV.
Availability
SMBJ8.0A-13-F is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and DC power supply input stages requiring stable component supply across multi-year production cycles.
Supply support for SMBJ8.0A-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, specializing in high-reliability protection, power management, and signal integrity solutions for industrial and automotive markets.
SMBJ series TVS diodes are engineered for board-level surge immunity in harsh environments, targeting applications demanding repeatable clamping performance, extended temperature operation, and compliance with international EMC standards.
FAQ
What is the polarity configuration of SMBJ8.0A-13-F?
SMBJ8.0A-13-F is a unidirectional TVS diode, with cathode identified by a visible band on the SMB package. It conducts only during reverse-biased overvoltage events and blocks forward current like a standard rectifier diode. This configuration is required for DC rail protection where polarity is fixed and reverse surge direction is known.
Can SMBJ8.0A-13-F be used in place of SMBJ8.0CA-13-F?
No - SMBJ8.0A-13-F is unidirectional and cannot replace the bi-directional SMBJ8.0CA-13-F in AC-coupled or floating signal paths. Substituting it in such applications would leave positive-going transients unprotected. The two share identical package and standoff voltage but differ fundamentally in conduction symmetry and test conditions for leakage and clamping.
What is the maximum allowable PCB trace length between SMBJ8.0A-13-F and protected IC?
To maintain effective clamping, the combined trace inductance from TVS anode to ground plane and cathode to protected node must remain below ~10nH. For typical 1oz copper, this limits total trace length to ≤10mm with adjacent ground pour. Longer traces increase clamping voltage due to L·di/dt, potentially exceeding downstream IC absolute maximum ratings.
Does SMBJ8.0A-13-F meet AEC-Q200 stress testing requirements?
No - SMBJ8.0A-13-F is qualified to commercial temperature grade (–55°C to +150°C) and RoHS, but it is not AEC-Q200 certified. For automotive under-hood applications requiring qualification, Diodes Incorporated offers the automotive-grade P6SMBJ8.0A-13-F variant, which undergoes additional temperature cycling, humidity bias, and mechanical shock testing per AEC-Q200 Rev D.
SMBJ8.0A-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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 44.1A
- 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
SMBJ8.0A-13-F FAQ
1.How can I place an order for SMBJ8.0A-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0A-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 SMBJ8.0A-13-F reliable?
The price and inventory of SMBJ8.0A-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 SMBJ8.0A-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ8.0A-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0A-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0A-13-F?
SMBJ8.0A-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0A-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 SMBJ8.0A-13-F?
For technical support, including SMBJ8.0A-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0A-13-F requirements.
6.How does Aetrix verify that SMBJ8.0A-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0A-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 SMBJ8.0A-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ8.0A-13-F?
All SMBJ8.0A-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0A-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 SMBJ8.0A-13-F part is unused and in its original packaging.
Return procedure for SMBJ8.0A-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0A-13-F Tags
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