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Vishay General Semiconductor - Diodes Division SMBJ11CA-E3/5B
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- Part No.:
- SMBJ11CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11CA-E3/5B.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,359
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Product details
Overview
SMBJ11CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤18.2 V at 33 A peak surge current - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ11CA-E3/5B datasheet, SMBJ11CA-E3/5B pinout, SMBJ11CA-E3/5B application, or SMBJ11CA-E3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under 18.2 V at rated IPPM, RoHS-compliant matte tin terminations, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during ESD or lightning-induced surges, leveraging an avalanche junction to conduct above VBR while maintaining low dynamic impedance. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity dependency in AC-coupled or differential signal paths.
Designed for transient suppression per IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge), it delivers 33 A peak pulse current (IPPM) with <1 ns response time and 0.080 %/°C VBR temperature coefficient - enabling stable protection across -55 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - guaranteed avalanche initiation window; ensures predictable turn-on across production lot and temperature |
| VC @ IPPM | ≤18.2 V at 33 A - clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream ICs |
| PPPM | 600 W - peak pulse power handling with 0.01 % duty cycle; supports repetitive transient events in industrial environments |
| IPPM | 33 A - peak surge current capacity under standard 10/1000 µs waveform; sets minimum PCB trace width and pad thermal design |
| Junction Temp | -55 °C to +150 °C - operational range compatible with under-hood automotive and industrial control cabinet deployments |
| Package | SMB (DO-214AA) - standardized 2-pin surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; optimized for high-density layouts |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction terminal | Either terminal serves as input/output; no cathode band marking required; enables placement without orientation check in automated assembly |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports robust surge immunity in 24 V industrial bus and PoE-powered edge nodes without derating at 25 °C ambient |
| Clamping voltage ≤18.2 V at 33 A | Protects 12 V-rated logic ICs and MOSFET gate drivers by limiting transient overvoltage below absolute maximum ratings |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow without pre-baking; eliminates moisture-related popcorning risk in high-volume manufacturing |
| Glass passivated junction | Ensures long-term reliability and stable VBR drift <±5 % over 1000 hrs at 85 °C/85 % RH humidity testing |
| RoHS-compliant, halogen-free option available | E3 suffix confirms compliance with EU RoHS Directive 2011/65/EU and JEDEC JS709E halogen-free requirements |
Applications
| Industrial Sensor Interface Protection | Telecom Line Surge Suppression |
|---|---|
|
Use Scenario: Protecting 4–20 mA current loop transmitters and RS-485 nodes against induced surges from nearby motor switching or lightning coupling. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential pair or supply rail to shunt transient energy before reaching interface IC. Use Value: Limits voltage excursion to ≤18.2 V during 33 A surge, preserving integrity of MAX1487 or SN65HVD72 transceivers rated for 16 V abs max. |
Use Scenario: Front-end protection of DSL or POTS line cards exposed to longitudinal surges per ITU-T K.20/K.44 standards. IC Role / Device Role / Timing Role: Primary-level TVS mounted at connector entry point to absorb >90 % of 10/1000 µs surge energy before secondary filtering. Use Value: Withstands 600 W pulses without degradation, enabling compliance with GR-1089-CORE Class B surge immunity requirements. |
| Automotive Body Control Module (BCM) | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Safeguarding LIN bus nodes and CAN transceiver power rails in non-safety-critical body electronics subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Secondary protection element downstream of primary fuse and choke, clamping fast transients missed by bulk filters. Use Value: AEC-Q101 qualified variant available (HE3 suffix); this E3 version provides commercial-grade cost-optimized alternative for non-automotive-qualified modules. |
Use Scenario: Suppressing commutation spikes from universal motor brushes in washing machines and vacuum cleaners. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp inductive kickback and reduce EMI radiated into control board. Use Value: Low incremental surge resistance (<0.2 Ω typical) minimizes voltage overshoot during 100 A peak switch-off events, extending MCU lifetime. |
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-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package | No difference in circuit function or layout; selected when halogen-free compliance is mandated by OEM environmental policy | Choose M3/5B for green manufacturing programs requiring JEDEC JS709E halogen-free certification |
| SMAJ11CA-E3/52 | Lower 400 W PPPM, smaller SMA (DO-214AC) package, 25 A IPPM, same VWM/VBR | Reduced surge handling; suitable only for lower-energy threat environments (e.g., handheld devices, low-power sensors) | Select SMAJ11CA-E3/52 where board space is constrained and peak surge exposure is limited to <25 A |
Compared with SMBJ11CA-E3/5B, the M3/5B offers identical protection performance with halogen-free materials, while SMAJ11CA-E3/52 trades 33 % lower surge capacity for 30 % smaller footprint - making SMBJ11CA-E3/5B optimal for industrial-grade 600 W surge resilience in SMB-constrained designs.
Availability
SMBJ11CA-E3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, consumer appliance motor drives, and automotive body control modules requiring stable component supply and full traceability.
Supply support for SMBJ11CA-E3/5B 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS, MOSFETs, and optoelectronics with emphasis on reliability and application-specific optimization.
The SMBJ series targets high-energy transient suppression in harsh environments - engineered for repeatable clamping performance, low leakage, and robust SMT manufacturability across industrial, telecom, and automotive segments.
FAQ
What is the clamping voltage of SMBJ11CA-E3/5B at its rated peak pulse current?
The SMBJ11CA-E3/5B clamps to a maximum of 18.2 V at its rated peak pulse current of 33 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88392 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ11CA-E3/5B maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is SMBJ11CA-E3/5B suitable for bidirectional signal line protection?
Yes, SMBJ11CA-E3/5B is explicitly designed for bidirectional protection, as indicated by the "CA" suffix and confirmed in Vishay's datasheet section "DEVICES FOR BIDIRECTION APPLICATIONS". Electrical characteristics apply identically in both directions, with no polarity marking required. The SMBJ11CA-E3/5B is commonly used across RS-485 differential pairs, USB D+/D− lines, and AC-coupled analog inputs where polarity reversal must not compromise protection.
What is the thermal resistance and power dissipation rating of SMBJ11CA-E3/5B?
The SMBJ11CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and a steady-state power dissipation (PD) of 5.0 W at TA = 50 °C on an infinite heatsink. These values govern continuous leakage power handling and require appropriate PCB copper area (minimum 0.2" × 0.2" per terminal) to sustain operation near maximum junction temperature of +150 °C. The SMBJ11CA-E3/5B is not intended for continuous power regulation.
Does SMBJ11CA-E3/5B meet automotive qualification standards?
The base SMBJ11CA-E3/5B is a commercial-grade part and is not AEC-Q101 qualified. However, Vishay offers the functionally identical SMBJ11CAHE3_B/I variant (with HE3 suffix) that is fully AEC-Q101 qualified for automotive applications. Engineers selecting SMBJ11CA-E3/5B should verify end-equipment requirements: use HE3 variants for under-hood or safety-critical modules, and SMBJ11CA-E3/5B for cost-sensitive commercial or industrial systems where automotive qualification is not mandated.
How does the SMBJ11CA-E3/5B compare to unidirectional SMBJ11A-E3/5B in circuit implementation?
The SMBJ11CA-E3/5B differs from SMBJ11A-E3/5B solely in polarity: "CA" denotes bidirectional operation with symmetrical terminals and no cathode band, while "A" indicates unidirectional with cathode-marked orientation. Both share identical VWM (11 V), VBR, VC, and PPPM. The SMBJ11CA-E3/5B eliminates orientation-dependent placement errors in automated assembly and supports AC signal paths, whereas SMBJ11A-E3/5B requires correct cathode alignment relative to DC bias direction.
SMBJ11CA-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- 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:
- DO-214AA (SMBJ)
SMBJ11CA-E3/5B FAQ
1.How can I place an order for SMBJ11CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11CA-E3/5B 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-E3/5B reliable?
The price and inventory of SMBJ11CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ11CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ11CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11CA-E3/5B?
SMBJ11CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11CA-E3/5B 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-E3/5B?
For technical support, including SMBJ11CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11CA-E3/5B requirements.
6.How does Aetrix verify that SMBJ11CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ11CA-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ11CA-E3/5B?
All SMBJ11CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11CA-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ11CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11CA-E3/5B Tags
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