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Vishay General Semiconductor - Diodes Division SMBJ26CA-M3/52
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- Part No.:
- SMBJ26CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ26CA-M3/52.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,607
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Product details
Overview
SMBJ26CA-M3/52 from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 26 V stand-off 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 - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom line cards.
For engineers reviewing the SMBJ26CA-M3/52 datasheet, SMBJ26CA-M3/52 pinout, SMBJ26CA-M3/52 application, or SMBJ26CA-M3/52 equivalent, this device delivers verified bidirectional surge suppression with halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification availability - critical for automotive-grade ESD and lightning surge protection design validation.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, while the 100 °C/W junction-to-ambient thermal resistance supports operation up to +150 °C junction temperature under defined PCB pad layout conditions.
The device responds in <1 ps to transient events and maintains <1.0 µA reverse leakage at 26 V (VWM), meeting IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge) immunity requirements when deployed with appropriate series impedance. Its 0.097 %/°C VBR temperature coefficient ensures predictable clamping behavior across automotive and industrial ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (min/max) | 28.9 V / 31.9 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on during overvoltage events without premature conduction. |
| VC @ IPPM | 42.1 V at 14.3 A - Clamped voltage seen by protected circuit during 600 W 10/1000 µs surge; determines downstream component stress level. |
| PPPM | 600 W - Peak pulse power handling capability with standard 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 3/4 surges. |
| IPPM | 14.3 A - Peak surge current supported at rated clamping voltage; used to size series current-limiting resistors or fuses. |
| TJ max | +150 °C - Maximum junction temperature rating; enables use in high-ambient environments like motor drives and base stations. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals with identical electrical behavior in either direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping occurs regardless of voltage polarity applied across the device. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional 600 W surge rating | Enables single-device protection of AC lines, differential buses, or ungrounded sensors without external polarity management. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and environmental compliance mandates for global electronics manufacturing. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow profiles without baking or special handling; reduces production line complexity. |
| Low 1.0 µA max reverse leakage at VWM | Minimizes standby power loss and avoids false triggering in high-impedance monitoring circuits or battery-powered nodes. |
| 0.097 %/°C VBR tempco | Ensures clamping voltage shift remains within ±3.5% over -55 °C to +150 °C, critical for precision analog front-end protection. |
Applications
| Industrial Motor Drive Control | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protecting gate drivers and microcontroller I/O from inductive kickback during relay or solenoid switching. IC Role / Device Role / Timing Role: Bidirectional TVS placed across MOSFET gate-source or MCU GPIO pins to clamp sub-100 ns transients. Use Value: Limits voltage excursion to ≤42.1 V during 14.3 A surge, preventing latch-up or oxide damage in 3.3 V/5 V logic interfaces. |
Use Scenario: Shielding LIN bus transceivers and sensor inputs from load dump and jump-start surges in 12 V vehicle networks. IC Role / Device Role / Timing Role: Standoff-rated TVS on LIN data line and power rail to absorb 600 W pulses per ISO 7637-2 Pulse 5a. Use Value: Maintains signal integrity with <1.0 µA leakage at 26 V, avoiding bus contention or false wake-up in sleep mode. |
| Telecom DSL Line Interface | Consumer Smart Meter Power Input |
|
Use Scenario: Safeguarding ADSL/VDSL PHY transceivers against lightning-induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Primary-level TVS on line-side transformer secondary, coordinated with GDT and MOV secondary protection. Use Value: Fast <1 ps response and 42.1 V clamping ensure transceiver ICs (e.g., Lantiq/Intel xDSL SoCs) remain within absolute maximum ratings. |
Use Scenario: Securing AC/DC converter input stage against mains-borne surges and neutral-ground transients in smart electricity meters. IC Role / Device Role / Timing Role: Bidirectional clamping device across bridge rectifier output or bulk capacitor terminals. Use Value: Withstands 600 W 10/1000 µs pulses without degradation, extending meter field life in high-lightning regions per IEC 61000-4-5 Ed. 3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26CA-E3/52 | Same electrical specs; RoHS-compliant but not halogen-free (SnPb-free matte tin, no halogen restriction). | Approved for commercial-grade industrial equipment where halogen-free mandate is not enforced. | Select when cost-sensitive commercial designs require full RoHS compliance without halogen-free certification. |
| SMBJ26CAHM3/52 | Identical electrical and mechanical specs; adds AEC-Q101 qualification and extended reliability testing. | Required for automotive body electronics, infotainment power rails, and ADAS sensor modules needing automotive qualification. | Choose for automotive programs requiring PPAP documentation, failure analysis traceability, and lifetime reliability validation. |
Compared with SMBJ26CA-M3/52, the E3 variant offers baseline RoHS compliance at lower cost for non-automotive use, while the HM3 variant adds AEC-Q101 qualification for automotive deployment - neither is pin-compatible with unidirectional variants, and all share identical SMB package dimensions and thermal performance.
Availability
SMBJ26CA-M3/52 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, telecom line interface, and smart meter power input applications requiring stable component supply, halogen-free compliance, and repeatable surge suppression performance.
Supply support for SMBJ26CA-M3/52 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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in space-constrained surface-mount applications - targeting industrial automation, automotive subsystems, and communications infrastructure where robustness and consistency are non-negotiable.
FAQ
What is the clamping voltage of SMBJ26CA-M3/52 under a 10/1000 µs surge?
The SMBJ26CA-M3/52 has a maximum clamping voltage (VC) of 42.1 V at 14.3 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per IEC 61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ26CA-M3/52 maintains this clamping performance across its full operating temperature range.
Is SMBJ26CA-M3/52 suitable for automotive applications?
The SMBJ26CA-M3/52 itself is not AEC-Q101 qualified; however, Vishay offers the functionally identical SMBJ26CAHM3/52 variant with full AEC-Q101 qualification for automotive use. The SMBJ26CA-M3/52 meets commercial-grade reliability and halogen-free requirements, making it appropriate for non-safety-critical automotive subsystems only when paired with additional system-level validation. Always verify qualification status via the full part number suffix.
What does the "CA" suffix mean in SMBJ26CA-M3/52?
The "CA" suffix in SMBJ26CA-M3/52 denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional "A" versions, the CA variant has no cathode marking and functions identically regardless of voltage polarity, making it ideal for AC lines, differential signals, and floating grounds. This is confirmed in Vishay's official documentation for the SMBJ family.
What is the thermal resistance of SMBJ26CA-M3/52, and how does it affect PCB layout?
The SMBJ26CA-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repetitive surge conditions, designers must adhere to this pad layout - reducing pad area increases thermal resistance and risks exceeding the +150 °C maximum junction temperature. The SMBJ26CA-M3/52's RθJL of 20 °C/W further supports heat transfer to PCB traces or ground planes.
How does the M3 suffix differ from E3 in SMBJ26CA-M3/52?
The "M3" suffix in SMBJ26CA-M3/52 indicates halogen-free, RoHS-compliant construction using bromine- and chlorine-free molding compounds and matte tin-plated leads - satisfying strict environmental regulations such as JEDEC J-STD-020 and EU Directive 2015/863. In contrast, the "E3" suffix (e.g., SMBJ26CA-E3/52) is RoHS-compliant but not halogen-free. Both share identical electrical performance, package, and reliability characteristics; the M3 variant is selected where halogen content restrictions apply.
SMBJ26CA-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 14.3A
- 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)
SMBJ26CA-M3/52 FAQ
1.How can I place an order for SMBJ26CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ26CA-M3/52 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 SMBJ26CA-M3/52 reliable?
The price and inventory of SMBJ26CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ26CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ26CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ26CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ26CA-M3/52?
SMBJ26CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ26CA-M3/52 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 SMBJ26CA-M3/52?
For technical support, including SMBJ26CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ26CA-M3/52 requirements.
6.How does Aetrix verify that SMBJ26CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ26CA-M3/52 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 SMBJ26CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ26CA-M3/52?
All SMBJ26CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ26CA-M3/52, 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 SMBJ26CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ26CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ26CA-M3/52 Tags
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