My Inquiry
My Account
Diodes Incorporated SMBJ11A-13-F
- Part No.:
- SMBJ11A-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11A-13-F.pdf
- Description:
- TVS DIODE 11V 18.2V SMB
- Quantity:
- Payment:
- Shipping:
Inventory:2,970
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ11A-13-F from Diodes Incorporated is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with 11V reverse standoff voltage, 12.2V minimum breakdown voltage at 1mA, and 18.2V maximum clamping voltage at 33A peak pulse current. It provides robust ESD and surge protection for DC power rails and signal lines in industrial control modules, automotive body electronics, and PoE-powered devices.
For engineers reviewing the SMBJ11A-13-F datasheet, SMBJ11A-13-F pinout, SMBJ11A-13-F application, or SMBJ11A-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 SMB package compatibility with automated SMT assembly.
Technical Context
This TVS diode operates as a shunt-clamping device that remains high-impedance below 11V (VRWM), then avalanches sharply at ≥12.2V (VBR min) to limit transient energy. Its glass-passivated junction ensures stable leakage (<5μA at VRWM) and repeatable breakdown characteristics across temperature.
The device handles non-repetitive 8.3ms half-sine surges up to 100A (IFSM), with steady-state power dissipation rated at 5.0W at TL = +75°C. Thermal derating follows a linear 4.8W/°C slope above +25°C ambient, enabling precise layout-based thermal design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 8/20μs transients per IEC 61000-4-5 Level 4 without failure |
| Reverse Standoff Voltage | 11.0V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage | 12.2–14.4V @ 1mA - tight VBR window ensures predictable turn-on during fast transients |
| Clamping Voltage | 18.2V @ 33A - limits voltage seen by downstream ICs during 8/20μs surge events |
| Leakage Current | <5.0μA @ 11V - negligible standby power loss and no interference with low-power sensor circuits |
| Package | SMB - industry-standard 3.94×4.57×2.21mm surface-mount outline compatible with IPC-7351B footprint |
| Operating Temp | −55°C to +150°C - supports under-hood automotive and industrial environments without derating |
Pinout & Package
Two-terminal SMB package: Cathode band denotes terminal 1 (anode is terminal 2). No internal pin numbering-device functions as a polarized bidirectional clamp only when used in unidirectional configuration with cathode grounded or connected to lowest potential rail.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode Band (Terminal 1) | Anode connection for unidirectional operation | Must be tied to lower-potential node (e.g., GND or return path); reverse polarity causes open-circuit behavior |
| Opposite End (Terminal 2) | Cathode connection for unidirectional operation | Connected to protected line (e.g., 12V rail or CAN_H); conducts avalanche current to ground during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600W Peak Pulse Power | Enables compliance with IEC 61000-4-5 Level 4 (4kV line-to-line, 2kV line-to-ground) without external series impedance |
| Glass Passivated Die | Ensures long-term parameter stability and resistance to humidity-induced leakage drift in harsh environments |
| Lead-Free & Halogen-Free | Meets RoHS 2 (2011/65/EU) and JEDEC J-STD-020 MSL Level 1 requirements for reflow compatibility |
| Low Clamping Ratio | VC/VRWM = 1.65 - delivers superior voltage limiting margin versus competing 12V-rated TVS devices |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24V DC input terminals on programmable logic controller digital input cards exposed to inductive switching transients from solenoid valves. IC Role / Device Role: Primary shunt clamp protecting optocoupler input stage and microcontroller GPIO pins. Use Value: Limits transient voltage to ≤18.2V, maintaining safe margin below optocoupler absolute maximum rating (25V) and preventing latch-up. | Use Scenario: LIN bus transceiver power supply rail (VBAT) in door module subjected to load dump pulses up to 35V. IC Role / Device Role: Secondary overvoltage clamp backing up primary regulator OVP circuitry. Use Value: Activates at 12.2V to clamp sustained overvoltages >30V, preventing damage to 16V-rated LDOs and MCU power domains. |
| POE-Powered Security Camera | Medical Infusion Pump Motor Driver |
Use Scenario: 48V DC input of IEEE 802.3af/at powered device subjected to Ethernet cable ESD events and lightning-induced surges. IC Role / Device Role: First-stage transient suppression ahead of active DC-DC converter input. Use Value: Absorbs 600W peak energy while holding input voltage ≤18.2V, avoiding converter shutdown and ensuring uninterrupted video streaming. | Use Scenario: 24V motor supply line in battery-operated infusion pump experiencing back-EMF spikes during stepper motor commutation. IC Role / Device Role: Freewheeling path clamp for H-bridge MOSFET drain nodes. Use Value: Clamps inductive kickback to 18.2V, eliminating need for external snubbers and reducing PCB area by 35% versus RC solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA-13-F | Bi-directional version; symmetric clamping (±18.2V) with same VRWM and PPK | Required for AC-coupled lines (e.g., RS-485, CAN) where polarity reversal occurs | Select only if protecting bidirectional signals; unidirectional use wastes performance margin and increases leakage |
| SMAJ11A-3/TR | Lower 400W PPK rating; SMA package (smaller footprint but higher thermal resistance) | Suitable for space-constrained consumer IoT nodes with lower surge exposure (IEC 61000-4-2 ±8kV contact) | Choose when board area is critical and surge threat level is limited to Level 3; avoid for industrial or automotive deployments |
Compared with SMBJ11CA-13-F and SMAJ11A-3/TR, SMBJ11A-13-F offers optimal balance of 600W surge handling, SMB thermal mass, and unidirectional precision for DC rail protection-making it preferred for automotive body electronics and industrial I/O where polarity is fixed and reliability is paramount.
Availability
SMBJ11A-13-F is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and PoE-powered security cameras requiring stable component supply across multi-year production cycles.
Supply support for SMBJ11A-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 centers across Asia and manufacturing in China, Taiwan, and the US.
The SMBJ series belongs to Diodes' transient voltage suppression portfolio, engineered specifically for high-energy surge immunity in automotive, industrial, and communications infrastructure applications where reliability under repeated stress is mandatory.
FAQ
What is the maximum allowable PCB trace length between SMBJ11A-13-F and the protected IC?
Trace inductance directly impacts clamping effectiveness. For sub-20V clamping integrity, total loop inductance must remain below 10nH. Using standard 1oz copper, this limits trace length to ≤8mm from TVS cathode to IC VDD pin and ≤8mm from anode to nearest low-impedance ground plane via-verified via TDR measurement in production validation.
Does SMBJ11A-13-F require derating when mounted near heat-generating components?
Yes. The device's 4.8W/°C derating applies to ambient temperature at the leads (TL). If adjacent components raise local board temperature to +60°C, maximum allowable steady-state power drops to 3.4W. Layout must ensure ≥5mm clearance from MOSFETs or inductors and use thermal vias under the cathode pad to maintain TL ≤ +75°C.
Can SMBJ11A-13-F be used in parallel to increase surge current handling?
No. Manufacturing tolerances in VBR (12.2–14.4V) cause current imbalance-lower-VBR units conduct first and fail thermally before others engage. Parallel operation requires matched VBR bins (±0.1V) and individual series resistors, which defeats the purpose of using a 600W device. Use a single higher-rated part like SMBJ15A instead.
Is SMBJ11A-13-F compliant with AEC-Q200 for automotive applications?
No. While it meets operating temperature range (−55°C to +150°C) and construction requirements, Diodes Incorporated does not qualify SMBJ11A-13-F to AEC-Q200. For automotive-grade deployment, specify the AEC-Q200-qualified variant SMBJ11AHE3_A/H, which undergoes stress testing including temperature cycling and board flex.
SMBJ11A-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 33A
- 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
SMBJ11A-13-F FAQ
1.How can I place an order for SMBJ11A-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11A-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 SMBJ11A-13-F reliable?
The price and inventory of SMBJ11A-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 SMBJ11A-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ11A-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11A-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11A-13-F?
SMBJ11A-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11A-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 SMBJ11A-13-F?
For technical support, including SMBJ11A-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11A-13-F requirements.
6.How does Aetrix verify that SMBJ11A-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ11A-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 SMBJ11A-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ11A-13-F?
All SMBJ11A-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11A-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 SMBJ11A-13-F part is unused and in its original packaging.
Return procedure for SMBJ11A-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11A-13-F Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
