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Vishay General Semiconductor - Diodes Division SMBJ26CD-M3/H
- Part No.:
- SMBJ26CD-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ26CD-M3/H.pdf
- Description:
- TVS DIODE 26VWM 41.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:10,505
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Product details
Overview
SMBJ26CD-M3/H 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 signal and power lines. It features a 26 V stand-off voltage (VWM), 29.3–31.5 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), 41.6 V maximum clamping voltage (VC) at 14.5 A IPPM, and operates across –55 °C to +150 °C junction temperature range - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ26CD-M3/H datasheet, SMBJ26CD-M3/H pinout, SMBJ26CD-M3/H application, or SMBJ26CD-M3/H equivalent, key selection criteria include bidirectional clamping capability, ±3.5 % VBR tolerance, low leakage (<0.5 μA at VWM), MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
This device functions as a voltage-clamping protector with symmetrical avalanche breakdown in both polarities, enabling robust ESD and surge suppression without polarity dependency. Its low incremental surge resistance and fast response time ensure effective transient energy diversion before downstream ICs or MOSFETs are damaged.
The SMBJ26CD-M3/H uses a planar junction structure optimized for stable breakdown characteristics and repeatable clamping performance under repetitive 10/1000 μs surges at 0.01 % duty cycle. Thermal resistance (RθJA = 125 °C/W on minimum pad layout) and 5.0 W power dissipation at TJ = 50 °C support reliable operation in compact industrial PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum reverse stand-off voltage before significant conduction begins; defines operating margin below clamping threshold |
| VBR min/max | 29.3 V / 31.5 V at IT = 1 mA - tight ±3.5 % tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 41.6 V at 14.5 A - clamping voltage during 600 W transient; limits stress on protected circuitry |
| PPPM | 600 W (10/1000 μs waveform) - peak surge handling capacity for lightning and inductive switching events |
| ID @ VWM | <0.5 μA - ultra-low leakage preserves signal integrity and battery life in always-on interfaces |
| TJ max | +150 °C - enables use in high-temperature industrial enclosures and under-hood automotive zones |
| Package | SMB (DO-214AA) - standardized SMT footprint compatible with automated assembly and IPC-7351B land patterns |
Pinout & Package
Two-terminal bidirectional device in SMB (DO-214AA) package; no polarity marking - terminals are symmetric and interchangeable. Case conforms to JEDEC DO-214AA outline with 2.20 mm × 3.94 mm body, 2.44 mm height, and matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals conduct identically during positive or negative surges - no orientation required during placement |
| Cathode Band (absent) | Polarity indicator | Not present - confirms bidirectional functionality; eliminates risk of incorrect orientation in layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management |
| ±3.5 % VBR tolerance | Reduces design margin overhead and improves consistency in multi-channel protection schemes |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak - eliminates baking requirements pre-assembly |
| Halogen-free & RoHS | Meets industrial environmental compliance mandates without compromising surge robustness or thermal performance |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV line-earth, 2 kV line-line) surges when properly mounted |
Applications
| Industrial Sensor Interface Protection | Telecom Line Surge Suppression |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA loops) and digital I/O (RS-485, CAN) in factory automation PLC modules from inductive switching transients and ground bounce. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed at connector entry point to shunt surge energy before reaching signal conditioning ICs or isolators. Use Value: Limits transient voltage to ≤41.6 V, preventing latch-up or gate oxide damage in op-amps and transceivers operating at 24 V nominal rails. | Use Scenario: Shielding Ethernet PHY interfaces and POTS line drivers in VoIP gateways and DSLAM equipment against lightning-induced surges and AC power cross-talk. IC Role / Device Role / Timing Role: Bidirectional clamping element across differential pairs or tip/ring lines to maintain signal symmetry during surge events. Use Value: Maintains <0.5 μA leakage at 26 V, preserving DC bias stability and minimizing insertion loss in broadband communication paths. |
| Automotive Body Control Module Inputs | Consumer Appliance Motor Drive Feedback Lines |
Use Scenario: Safeguarding microcontroller GPIOs connected to door lock actuators, window switches, and lighting controls exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary overvoltage clamp on low-voltage (12 V system) input traces, coordinated with upstream fusing and filtering. Use Value: Withstands 150 °C junction temperature and meets AEC-Q200 stress test requirements when used with minimum 5.0 mm × 5.0 mm copper pads. | Use Scenario: Protecting hall-effect sensor outputs and encoder feedback signals in washing machine drum motor controllers subjected to brush-commutator noise and relay switching spikes. IC Role / Device Role / Timing Role: Localized TVS adjacent to sensor IC package to minimize loop inductance and improve high-frequency surge rejection. Use Value: Delivers 41.6 V clamping at 14.5 A with <1 ns response - faster than typical MCU GPIO ESD structures, reducing fault propagation risk. |
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 (Vishay) | Same VWM/VBR/VC specs; differs in packaging (tape-and-reel vs. bulk) and M3 suffix omission - no JESD201 Class 2 whisker test certification | Acceptable for non-industrial or cost-sensitive consumer designs where whisker reliability is not mandated | Select SMBJ26CD-M3/H when long-term reliability under thermal cycling and high-humidity conditions is required |
| 1.5KE27CA (ON Semiconductor) | Higher VWM (27 V), larger DO-201 package (5.3 mm × 5.3 mm), lower RθJA (~65 °C/W), but unidirectional variant only - requires dual-device implementation for bidirectional protection | Suitable for through-hole legacy designs or higher-power derating needs; not drop-in for SMB footprint | Choose SMBJ26CD-M3/H for space-constrained SMT layouts requiring true bidirectional protection in one device |
Compared with SMBJ26CA-E3/52 and 1.5KE27CA, the SMBJ26CD-M3/H uniquely combines bidirectional operation, M3-grade whisker resistance, and SMB footprint - making it optimal for modern industrial SMT systems demanding zero-orientation placement and extended lifecycle compliance.
Availability
SMBJ26CD-M3/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, and automotive body control modules requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ26CD-M3/H 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for industrial, automotive, and computing markets.
The SMBJ series was engineered specifically for surface-mount transient suppression in harsh environments - balancing high surge capability, tight parametric tolerances, and process-controlled reliability for mission-critical electronics.
FAQ
What is the clamping voltage of SMBJ26CD-M3/H at its rated peak pulse current?
The SMBJ26CD-M3/H has a maximum clamping voltage (VC) of 41.6 V at its peak pulse current (IPPM) of 14.5 A, measured using the standard 10/1000 μs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during transient events. The SMBJ26CD-M3/H maintains this clamping performance consistently due to its planar junction design and low incremental surge resistance.
Is SMBJ26CD-M3/H suitable for bidirectional signal line protection?
Yes, SMBJ26CD-M3/H is explicitly designed for bidirectional protection, as indicated by the "CD" suffix and absence of cathode band marking. Its symmetrical breakdown behavior ensures identical clamping performance for both positive- and negative-polarity transients - ideal for protecting AC-coupled interfaces like RS-485, CAN FD, and audio lines. Unlike unidirectional variants, SMBJ26CD-M3/H requires no polarity-aware routing or orientation during PCB assembly.
Does SMBJ26CD-M3/H meet RoHS and halogen-free requirements?
Yes, SMBJ26CD-M3/H carries the "M3" suffix, confirming it is halogen-free, RoHS-compliant, and qualified to JESD201 Class 2 for whisker resistance. The molding compound meets UL 94 V-0 flammability rating, and matte tin-plated leads comply with J-STD-002 solderability standards. These attributes make SMBJ26CD-M3/H suitable for industrial and medical applications with strict environmental and reliability mandates.
What is the thermal resistance of SMBJ26CD-M3/H on a standard PCB layout?
The SMBJ26CD-M3/H exhibits a typical junction-to-ambient thermal resistance (RθJA) of 125 °C/W when mounted on the minimum recommended pad layout per Vishay's datasheet. On a 5.0 mm × 5.0 mm copper pad area, RθJA improves to 100 °C/W. This thermal performance directly impacts steady-state power handling: at TA = 25 °C, SMBJ26CD-M3/H supports 1.0 W continuous dissipation; at TJ = 50 °C, it supports 5.0 W - critical for surge duty-cycle planning.
Can SMBJ26CD-M3/H replace SMBJ26CA in existing designs?
SMBJ26CD-M3/H can functionally replace SMBJ26CA in most bidirectional protection roles, but differences exist: SMBJ26CD-M3/H adds M3-grade whisker resistance, tighter process control, and industrial-grade qualification. While electrical specs match, the M3 suffix certifies compliance with JESD201 Class 2 and halogen-free content - essential for high-reliability deployments. Layout remains identical, as both use the SMB (DO-214AA) package.
SMBJ26CD-M3/H 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):
- 29.3V
- Voltage - Clamping (Max) @ Ipp:
- 41.6V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- 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)
SMBJ26CD-M3/H FAQ
1.How can I place an order for SMBJ26CD-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ26CD-M3/H 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 SMBJ26CD-M3/H reliable?
The price and inventory of SMBJ26CD-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ26CD-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ26CD-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ26CD-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ26CD-M3/H?
SMBJ26CD-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ26CD-M3/H 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 SMBJ26CD-M3/H?
For technical support, including SMBJ26CD-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ26CD-M3/H requirements.
6.How does Aetrix verify that SMBJ26CD-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ26CD-M3/H 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 SMBJ26CD-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ26CD-M3/H?
All SMBJ26CD-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ26CD-M3/H, 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 SMBJ26CD-M3/H part is unused and in its original packaging.
Return procedure for SMBJ26CD-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ26CD-M3/H Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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