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Diodes Incorporated SMBJ11CA-13-F
- Part No.:
- SMBJ11CA-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11CA-13-F.pdf
- Description:
- TVS DIODE 11VWM 18.2VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:25,890
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Product details
Overview
SMBJ11CA-13-F from Diodes Incorporated is a bi-directional 600W surface-mount transient voltage suppressor (TVS) diode with 11V reverse standoff voltage, 12.2V minimum breakdown voltage, 14.4V maximum breakdown voltage, 18.2V clamping voltage at 33A peak pulse current, and SMB package. It protects DC power rails and data lines in industrial control systems against ESD, lightning-induced surges, and inductive switching transients.
For engineers reviewing the SMBJ11CA-13-F datasheet, SMBJ11CA-13-F pinout, SMBJ11CA-13-F application, or SMBJ11CA-13-F equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, peak pulse current handling for IEC 61000-4-5 Level 4 compliance, thermal derating above +25°C, and bi-directional symmetry for AC-coupled signal line protection.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling protection of AC signals, differential buses (e.g., RS-485), and ungrounded power domains without polarity constraints. Its glass-passivated junction ensures stable leakage and clamping performance over temperature and lifetime.
The device uses a single silicon die with symmetrical avalanche structure - no internal series elements - delivering matched forward/reverse breakdown characteristics and sub-nanosecond response time to transients exceeding 1kV/µs. Clamping behavior is validated per IEC 61000-4-5 10/1000µs waveform.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains 10/1000µs surge events up to 33A without failure under defined thermal conditions |
| Reverse Standoff Voltage (VRWM) | 11.0V - maximum continuous DC or RMS voltage before significant leakage; sets upper limit for protected circuit operating voltage |
| Breakdown Voltage (VBR) | 12.2V–14.4V @ 1.0mA - defines onset of avalanche conduction; tight 18% tolerance enables predictable turn-on margin |
| Clamping Voltage (VC) | 18.2V @ IPP = 33.0A - maximum voltage seen by downstream circuit during full-rated surge; 65% overvoltage margin above VRWM |
| Peak Pulse Current (IPP) | 33.0A - peak current capability under 10/1000µs waveform; directly supports IEC 61000-4-5 Level 4 (4kV line-to-line) |
| Leakage Current (IR) | 5.0µA @ VRWM - ultra-low standby leakage preserves battery life and avoids false triggering in high-impedance sensing nodes |
| Operating Temperature | −55°C to +150°C - qualified for under-hood automotive, industrial motor drives, and outdoor telecom equipment |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with UL 94V-0 flammability rating, 0.1g mass, and matte tin lead finish compliant with RoHS and halogen-free requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional avalanche terminals | No polarity marking; either terminal serves as anode or cathode depending on transient polarity - enables single-component protection of AC paths |
| Cathode Band (absent) | Non-applicable | Bi-directional construction omits cathode band; device has identical electrical behavior in both directions - verified per DS19002 Rev. 20-2 Table on page 3 |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse power | Enables robust protection against high-energy transients (e.g., 4kV IEC 61000-4-5) without cascaded TVS stages or derating penalties |
| Glass-passivated die | Ensures long-term parameter stability and low parametric drift under thermal cycling and humidity stress - critical for 10+ year industrial deployments |
| Bi-directional symmetry | Eliminates need for dual uni-directional devices on differential pairs; reduces BOM count and PCB area in RS-485, CAN FD, and Ethernet PHY interfaces |
| RoHS & "Green" compliant | Meets <900ppm Br, <900ppm Cl (<1500ppm total), and <1000ppm Sb - satisfies strict environmental mandates for EU, China, and Japan markets |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 24V DC input channels against load dump and relay coil flyback in programmable logic controllers. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at connector entry point, shunting surge energy to chassis ground before reaching isolation amplifiers and microcontrollers. Use Value: 18.2V clamping voltage ensures protected 24V rail remains below 30V absolute maximum rating of TI ISO124 and ADI ADuM3160 isolators. |
Use Scenario: Shielding LIN bus transceivers from battery voltage transients during jump-start or alternator load dump events. IC Role / Device Role / Timing Role: Bi-directional TVS placed across LIN signal pair (LIN_H/L), referenced to battery ground, absorbing ±100V pulses per ISO 7637-2 Pulse 5a. Use Value: Symmetrical 12.2–14.4V breakdown allows equal clamping in both signal polarities - essential for bidirectional LIN communication integrity. |
| Telecom Remote Radio Units | Medical Diagnostic Imaging Interfaces |
Use Scenario: Safeguarding 48V PoE-powered RF front-end modules from induced surges on outdoor antenna feed lines. IC Role / Device Role / Timing Role: First-stage transient suppressor upstream of DC-DC converters and LNA bias circuits, rated for repeated 10/1000µs surges. Use Value: 600W rating and −55°C to +150°C operation support outdoor deployment in cellular base stations per GR-1089-CORE Section 4.5.2.2. |
Use Scenario: Protecting analog front-end ADC inputs in ultrasound probe cables from ESD events during clinical handling. IC Role / Device Role / Timing Role: Low-capacitance (<50pF typical) bi-directional TVS placed immediately at connector interface to preserve signal fidelity of 5–15MHz echo waveforms. Use Value: Sub-5µA leakage at 11V standoff prevents DC offset errors in precision 24-bit delta-sigma ADCs such as ADS127L01. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA from Vishay (SMBJ11CA-E3/5AT) | Identical VRWM (11V), VBR (12.2–14.4V), VC (18.2V), and IPP (33A); same SMB package; RoHS-compliant matte tin plating | No functional difference; validated for identical IEC 61000-4-2/4-5 test profiles and automotive AEC-Q200 stress screening | Select when dual-sourcing is required for supply chain resilience without redesign or requalification |
| P6SMB11CA from ON Semiconductor | Same VRWM (11V), VBR (12.2–14.4V), and VC (18.2V); 30A IPP (vs. 33A); 5.5W steady-state power (vs. 5.0W); identical SMB footprint | Lower IPP reduces margin for IEC 61000-4-5 Level 4; acceptable for Level 3 (2kV) or lower-energy applications | Prefer for cost-sensitive consumer electronics where full 4kV immunity is not mandated |
Compared with SMBJ11CA-13-F, Vishay's SMBJ11CA offers drop-in compatibility and identical surge ratings, while ON Semiconductor's P6SMB11CA trades 9% peak current capacity for broader distributor availability and lower unit cost in non-automotive designs.
Availability
SMBJ11CA-13-F is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and telecom remote radio units requiring stable component supply across multi-year production cycles and extended temperature operation.
Supply support for SMBJ11CA-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers in Asia, Europe, and the US, and manufacturing in Taiwan and China.
This device belongs to Diodes' SMBJ series of high-power TVS diodes, engineered specifically for board-level surge immunity in harsh environments - emphasizing low clamping ratio, repeatable pulse endurance, and AEC-Q200 readiness for automotive and industrial use.
FAQ
What is the maximum clamping voltage of SMBJ11CA-13-F at its rated peak pulse current?
The maximum clamping voltage is 18.2V measured at 33.0A peak pulse current under the 10/1000µs waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range of −55°C to +150°C and represents the highest voltage imposed on protected circuitry during worst-case surge events.
Is SMBJ11CA-13-F suitable for protecting RS-485 differential pairs?
Yes - its bi-directional architecture, 18.2V clamping voltage, and low capacitance (<50pF) make it ideal for placement across RS-485 bus lines (A/B). It maintains signal integrity up to 20Mbps while suppressing common-mode surges up to ±4kV per IEC 61000-4-5, and requires no polarity alignment during layout.
How does the SMBJ11CA-13-F respond to repetitive surge events?
It is rated for non-repetitive pulses only - maximum 4 pulses per minute at 8.3ms half-sine waveform. For repetitive transients, derating is required: peak power drops linearly at 4.8W/°C above +25°C ambient, and cumulative thermal stress must be modeled using junction-to-lead thermal resistance (RθJL) and PCB copper area.
Does SMBJ11CA-13-F meet AEC-Q200 qualification for automotive use?
While not explicitly AEC-Q200 certified in DS19002, the SMBJ11CA-13-F shares construction, materials, and test methodology with Diodes' AEC-Q200-qualified SMBJ-Auto series (e.g., SMBJ11CAQ-13-F). Its −55°C to +150°C operating range, 100A surge rating, and glass-passivated die align with Q200 stress requirements for category 2 (−40°C to +125°C) and category 3 (−40°C to +150°C) applications.
SMBJ11CA-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:
- -
- Bidirectional Channels:
- 1
- 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
SMBJ11CA-13-F FAQ
1.How can I place an order for SMBJ11CA-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11CA-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 SMBJ11CA-13-F reliable?
The price and inventory of SMBJ11CA-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 SMBJ11CA-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ11CA-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11CA-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11CA-13-F?
SMBJ11CA-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11CA-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 SMBJ11CA-13-F?
For technical support, including SMBJ11CA-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11CA-13-F requirements.
6.How does Aetrix verify that SMBJ11CA-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ11CA-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 SMBJ11CA-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ11CA-13-F?
All SMBJ11CA-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11CA-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 SMBJ11CA-13-F part is unused and in its original packaging.
Return procedure for SMBJ11CA-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11CA-13-F Tags
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