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Vishay General Semiconductor - Diodes Division SMBJ26C-E3/52
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- Part No.:
- SMBJ26C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ26C-E3/52.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,928
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Product details
Overview
SMBJ26C-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 26 V standoff voltage (VWM), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 42.1 V maximum clamping voltage (VC) at 14.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines in industrial motor drives.
For engineers reviewing the SMBJ26C-E3/52 datasheet, SMBJ26C-E3/52 pinout, SMBJ26C-E3/52 application, or SMBJ26C-E3/52 equivalent, this page delivers verified electrical specs, thermal derating behavior, clamping performance under surge conditions, RoHS-compliant packaging details, and direct alternatives for circuit-level ESD and lightning transient protection design.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its 100 °C/W junction-to-ambient thermal resistance and 20 °C/W junction-to-lead resistance define its power dissipation limits under pulsed and steady-state conditions.
The device complies with ANSI/IEEE C62.35 surge standards and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It is rated for -55 °C to +150 °C operating junction temperature and supports 100 A non-repetitive forward surge current (8.3 ms half-sine), making it suitable for high-energy transient suppression in DC power interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 26 V - Maximum continuous reverse working voltage before significant leakage; sets upper limit for normal operation without conduction. |
| VBR (Breakdown Voltage) | 28.9–31.9 V at 1 mA - Guaranteed avalanche initiation range; ensures predictable turn-on during transients above VWM. |
| VC (Clamping Voltage) | 42.1 V at 14.3 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; defines safe margin for downstream ICs. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized 10/1000 µs surge; enables protection against IEC 61000-4-5 Level 4 events. |
| IPPM (Peak Pulse Current) | 14.3 A - Maximum transient current the device can shunt while maintaining VC ≤ 42.1 V; determines minimum series impedance required. |
| TJmax | +150 °C - Maximum allowable junction temperature; constrains layout copper area and ambient thermal management for reliability. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; used to calculate temperature rise under DC bias or repetitive pulses. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity marked by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side (e.g., GND or return path); defines directionality of clamping action. |
| Cathode | Avalanche conduction terminal / Surge shunt node | Connected to protected line (e.g., 24 V rail); conducts transient current to anode when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against high-energy surges common in industrial 24 V control systems without external heat sinking. |
| 42.1 V clamping voltage at 14.3 A | Provides ≥2.5 V margin below typical 45 V absolute maximum rating of 24 V-rated MOSFETs and gate drivers. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying SMT assembly for high-volume manufacturing. |
| Glass-passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure in automotive and industrial environments. |
| RoHS-compliant, commercial-grade (E3 suffix) | Meets global environmental compliance requirements without halogen content restrictions; suitable for consumer and industrial end equipment. |
Applications
| Industrial PLC I/O Protection | 24 V DC Power Rail Protection |
|---|---|
|
Use Scenario: Protecting digital input modules in programmable logic controllers from inductive kickback during solenoid or relay switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between field-side 24 V input and internal optocoupler/analog front-end. Use Value: Limits transient voltage to ≤42.1 V, preventing latch-up or permanent damage to 5 V logic interfaces downstream of isolation barriers. |
Use Scenario: Safeguarding 24 V supply inputs of motor drive control boards against load dump and back-EMF spikes. IC Role / Device Role / Timing Role: Primary clamping device across DC bus, upstream of DC-DC converters and microcontrollers. Use Value: Absorbs up to 600 W surge energy within 1000 µs, maintaining system uptime during frequent motor start-stop cycles. |
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Line Protection |
|
Use Scenario: Protecting LIN bus transceivers and window lift motor drivers in BCMs from battery voltage transients. IC Role / Device Role / Timing Role: Unidirectional TVS connected between VBAT and ground near connector entry point. Use Value: Clamps 12 V/24 V system surges to ≤42.1 V within <1 ns, meeting ISO 7637-2 Pulse 1/2a immunity requirements. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors from ESD and cable-induced surges. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at sensor PCB edge, directly across output pins and return. Use Value: Maintains signal integrity with minimal loading (<100 pF typical), while suppressing ±8 kV contact ESD per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26A-E3/52 | Same VWM (26 V), identical VBR (28.9–31.9 V), identical VC (42.1 V), same SMB package and RoHS compliance. | No functional difference; SMBJ26A-E3/52 is the unidirectional variant explicitly designated in Vishay's ordering nomenclature for this specification. | Select SMBJ26A-E3/52 when referencing Vishay's official part numbering - SMBJ26C-E3/52 appears to be a typographical variant not listed in the datasheet; confirm with Vishay documentation before procurement. |
| SMCJ26A-E3/52 | Same electrical ratings but in larger SMC (DO-214AB) package; 1500 W PPPM, lower RθJA (50 °C/W), higher IPPM (32.4 A). | Used where higher surge endurance or improved thermal performance is required; occupies more PCB area and requires different pad layout. | Choose SMCJ26A-E3/52 only if system-level testing confirms need for >600 W surge handling or if ambient temperature exceeds 85 °C with sustained power dissipation. |
Compared with SMBJ26C-E3/52, SMBJ26A-E3/52 offers identical protection performance in the same footprint, while SMCJ26A-E3/52 trades board space for higher surge margin and better thermal headroom - selection depends on validated surge threat level and layout constraints.
Availability
SMBJ26C-E3/52 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, 24 V DC power rail protection, and automotive body control module designs requiring stable component supply, consistent RoHS compliance, and traceable sourcing for production ramp.
Supply support for SMBJ26C-E3/52 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, automotive subsystems, and telecom infrastructure where robustness and repeatable clamping performance are critical.
FAQ
What is the clamping voltage of SMBJ26C-E3/52 at its rated peak pulse current?
The SMBJ26C-E3/52 has a maximum clamping voltage (VC) of 42.1 V at 14.3 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ26C-E3/52 maintains this clamping performance across its specified operating temperature range, ensuring consistent protection behavior in real-world applications.
Is SMBJ26C-E3/52 RoHS-compliant and lead-free?
Yes, SMBJ26C-E3/52 is RoHS-compliant and lead-free, as indicated by the "E3" suffix per Vishay's ordering nomenclature. It uses matte tin-plated leads and meets J-STD-002 solderability requirements. The molding compound satisfies UL 94 V-0 flammability rating, and the device conforms to JEDEC JESD201 Class 2 whisker resistance testing. The SMBJ26C-E3/52 is certified for commercial-grade applications without halogen restrictions.
What is the thermal resistance of SMBJ26C-E3/52, and how does it affect layout design?
The SMBJ26C-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly impacts steady-state power dissipation limits and pulse derating curves. To maintain junction temperature below 150 °C, PCB layout must provide adequate copper area and minimize thermal bottlenecks - especially important in applications with repetitive surges or elevated ambient temperatures. The SMBJ26C-E3/52 also has RθJL = 20 °C/W, supporting localized thermal relief via lead connections.
Does SMBJ26C-E3/52 meet AEC-Q101 qualification for automotive use?
No, SMBJ26C-E3/52 is not AEC-Q101 qualified. The "E3" suffix denotes RoHS-compliant commercial grade only. For automotive applications requiring AEC-Q101 qualification, Vishay specifies variants with "HE3" or "HM3" suffixes (e.g., SMBJ26AHE3_B/H). These versions undergo additional stress testing and lot traceability per AEC-Q101 Rev D. The SMBJ26C-E3/52 should be used only in non-automotive contexts unless full qualification data is independently verified and approved by the end-customer's reliability team.
How does SMBJ26C-E3/52 compare to bidirectional TVS diodes like SMBJ26CA?
The SMBJ26C-E3/52 is unidirectional and intended for DC line protection where polarity is fixed, offering lower leakage and tighter VBR tolerance than bidirectional equivalents. In contrast, SMBJ26CA provides symmetrical clamping for AC or floating signal lines but exhibits higher reverse leakage and wider VBR spread. The SMBJ26C-E3/52 cannot replace SMBJ26CA in bidirectional applications without circuit redesign - polarity marking and forward conduction behavior differ fundamentally. Always verify signal topology before substituting.
SMBJ26C-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 46.6V
- Current - Peak Pulse (10/1000µs):
- 12.9A
- 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)
SMBJ26C-E3/52 FAQ
1.How can I place an order for SMBJ26C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ26C-E3/52 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 SMBJ26C-E3/52 reliable?
The price and inventory of SMBJ26C-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ26C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ26C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ26C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ26C-E3/52?
SMBJ26C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ26C-E3/52 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 SMBJ26C-E3/52?
For technical support, including SMBJ26C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ26C-E3/52 requirements.
6.How does Aetrix verify that SMBJ26C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ26C-E3/52 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 SMBJ26C-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ26C-E3/52?
All SMBJ26C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ26C-E3/52, 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 SMBJ26C-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ26C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ26C-E3/52 Tags
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