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Vishay General Semiconductor - Diodes Division SMCJ26AHE3_A/I
- Part No.:
- SMCJ26AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ26AHE3_A/I.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,418
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Product details
Overview
SMCJ26AHE3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 26 V standoff voltage (VWM), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 42.1 V clamping voltage (VC) at 35.6 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive ECUs, industrial PLC I/O modules, and telecom power supplies.
For engineers reviewing the SMCJ26AHE3_A/I datasheet, SMCJ26AHE3_A/I pinout, SMCJ26AHE3_A/I application, or SMCJ26AHE3_A/I equivalent, key selection criteria include clamping performance under 35.6 A surge, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8 mm × 8 mm copper pads.
Technical Context
This device operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its clamping behavior is defined by the 10/1000 µs standard waveform per ANSI/IEEE C62.35, with thermal derating above 25 °C per Figure 2 in the datasheet.
The SMCJ26AHE3_A/I is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 26 V - maximum continuous reverse voltage before significant leakage; sets operating margin below breakdown |
| VBR (Breakdown Voltage) | 28.9–31.9 V at 1 mA - defines onset of avalanche conduction; tight tolerance ensures predictable turn-on |
| VC (Clamping Voltage) | 42.1 V at 35.6 A IPPM - limits transient voltage seen by protected ICs during 10/1000 µs surge |
| PPPM (Peak Pulse Power) | 1500 W - energy-handling capacity for standardized lightning/surge transients |
| RθJA | 75 °C/W - thermal resistance from junction to ambient; requires adequate PCB copper area for sustained power dissipation |
| TJ max. | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with cathode band marking. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); terminals are matte tin-plated for reliable reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to ground or lower-potential rail in unidirectional configuration |
| Cathode | Avalanche conduction terminal / Surge current sink | Connected to protected line; marked with band; carries full IPPM during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, high-temp reverse bias, and mechanical shock |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under repeated surge stress |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response) |
| MSL Level 1 rating | Enables direct placement without dry-pack or baking; compatible with standard SMT reflow profiles up to 260 °C peak |
| UL 94 V-0 molding compound | Ensures flame-retardant encapsulation for safety-critical industrial and automotive applications |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load-dump and jump-start transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply and local LDO input, clamping surges before they reach sensitive logic. Use Value: Withstands 1500 W peak pulses and maintains <42.1 V clamping, preventing latch-up or damage to downstream 3.3 V/5 V ICs. | Use Scenario: Shields 24 V digital input circuitry from inductive kickback when solenoids or relays switch off. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side input trace, mounted directly at connector entry point. Use Value: Fast response and low Rsurge limit transient duration and amplitude, reducing need for additional RC filtering. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Drive Board |
Use Scenario: Guards AC/DC adapter output against lightning-induced surges entering via PoE or auxiliary power lines. IC Role / Device Role / Timing Role: Secondary-stage TVS after primary MOV, providing precise clamping for downstream DC-DC converters. Use Value: Tight VBR tolerance (±5.2%) and stable VC ensure consistent protection margin across production lots. | Use Scenario: Safeguards MCU reset and communication lines from ESD and motor commutation noise in washing machine control boards. IC Role / Device Role / Timing Role: Localized protection on 3.3 V sensor bus and UART lines near motor driver IC. Use Value: AEC-Q101 qualification and -55 °C to +150 °C range support extended lifetime in thermally aggressive appliance enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A-E3/57T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Suitable only for lower-energy transients; limited thermal mass for repeated surges | Select when board space is constrained and surge threat level is ≤400 W |
| SMCJ26CAHE3_A/I | Bidirectional variant; same VWM (26 V), symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal occurs | Choose only if bidirectional protection is mandated by circuit topology |
Compared with SMAJ26A-E3/57T and SMCJ26CAHE3_A/I, the SMCJ26AHE3_A/I delivers 3.75× higher surge power handling and automotive-grade qualification - making it the preferred choice for high-reliability 12 V/24 V DC systems where thermal management and AEC compliance are critical.
Availability
SMCJ26AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMCJ26AHE3_A/I 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 SMCJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against ISO 7637-2 and IEC 61000-4-5 threats is mandatory.
FAQ
What is the clamping voltage of SMCJ26AHE3_A/I at its rated peak pulse current?
The SMCJ26AHE3_A/I has a maximum clamping voltage (VC) of 42.1 V when subjected to its rated peak pulse current (IPPM) of 35.6 A using the standard 10/1000 µs waveform. This value is measured under specified test conditions per ANSI/IEEE C62.35 and ensures protected circuits remain below critical voltage thresholds during surge events. The SMCJ26AHE3_A/I maintains this clamping performance across its qualified temperature range.
Is SMCJ26AHE3_A/I qualified for automotive applications?
Yes, the SMCJ26AHE3_A/I is AEC-Q101 qualified, as indicated by the "HE3" suffix in its part number. It has passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), temperature cycling (TCT), and mechanical shock - confirming suitability for under-hood and body electronics. The SMCJ26AHE3_A/I is explicitly listed in Vishay's AEC-Q101 qualified product matrix for transient suppressors.
What does the "_A/I" suffix mean in SMCJ26AHE3_A/I?
The "_A/I" suffix in SMCJ26AHE3_A/I denotes the packaging and reel configuration: "A" indicates the revision code (per Vishay's ordering nomenclature), and "I" specifies 13-inch diameter plastic tape-and-reel delivery with 3500 units per reel. This format supports high-volume automated assembly and is documented in Vishay's SMCJ ordering information table (Document Number 88394, page 3).
How does the thermal resistance of SMCJ26AHE3_A/I affect PCB layout?
The SMCJ26AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W, which requires minimum 8.0 mm × 8.0 mm copper pad areas per terminal to sustain its 6.5 W power dissipation at 50 °C ambient. Reducing pad size increases junction temperature, risking premature failure during repetitive surges. The SMCJ26AHE3_A/I datasheet specifies this pad layout in Mechanical Data and Figure 2 derating curves.
Can SMCJ26AHE3_A/I be used in bidirectional signal protection?
No, the SMCJ26AHE3_A/I is a unidirectional TVS diode, intended for DC rail protection where polarity is fixed (e.g., 12 V supply to ground). For bidirectional signal lines such as RS-485 or USB D+/D−, the bidirectional variant SMCJ26CAHE3_A/I must be used instead. The SMCJ26AHE3_A/I lacks symmetrical clamping and will conduct heavily in reverse bias beyond its VWM, potentially damaging upstream drivers.
SMCJ26AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 35.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ26AHE3_A/I FAQ
1.How can I place an order for SMCJ26AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ26AHE3_A/I 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 SMCJ26AHE3_A/I reliable?
The price and inventory of SMCJ26AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ26AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ26AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ26AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ26AHE3_A/I?
SMCJ26AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ26AHE3_A/I 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 SMCJ26AHE3_A/I?
For technical support, including SMCJ26AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ26AHE3_A/I requirements.
6.How does Aetrix verify that SMCJ26AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ26AHE3_A/I 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 SMCJ26AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ26AHE3_A/I?
All SMCJ26AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ26AHE3_A/I, 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 SMCJ26AHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ26AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ26AHE3_A/I Tags
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