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Vishay General Semiconductor - Diodes Division SMBJ26CAHE3_A/H
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- Part No.:
- SMBJ26CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ26CAHE3_A/H.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,530
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Product details
Overview
SMBJ26CAHE3_A/H 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 or power 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 motor drives.
For engineers reviewing the SMBJ26CAHE3_A/H datasheet, SMBJ26CAHE3_A/H pinout, SMBJ26CAHE3_A/H application, or SMBJ26CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), low leakage (<1.0 µA at VWM), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity. Its glass-passivated junction enables fast response time (<1 ns), low incremental surge resistance, and stable breakdown characteristics over temperature (VBR tempco = 0.097 %/°C).
Rated for repetitive surge duty cycle of 0.01 %, it sustains 600 W peak pulse power under standardized 10/1000 µs waveform conditions when mounted per recommended pad layout. Junction temperature range spans −55 °C to +150 °C, with MSL Level 1 moisture sensitivity and lead-free matte tin terminations compliant with J-STD-002 and JESD 22-B102.
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 IT = 1 mA - Confirmed breakdown range ensures reliable triggering across process variation and temperature. |
| VC @ IPPM | 42.1 V at 14.3 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 600 W - Peak pulse power handling capacity; validates robustness against lightning-induced or inductive-switching transients. |
| IPPM | 14.3 A - Peak surge current supported at rated clamping voltage; correlates directly with PCB trace width and layout robustness. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; informs derating requirements above TA = 25 °C per Fig. 2. |
| TJ max | +150 °C - Maximum junction temperature; sets upper limit for thermal design in enclosed or high-ambient environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative-going transients; forms symmetrical conduction path with cathode. |
| Cathode | Transient current entry (positive polarity) | Accepts forward surge current during positive-going transients; completes bidirectional clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM performance in both directions - eliminates need for polarity-aware layout in AC-coupled or floating signal paths. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge endurance - supports use in ADAS camera modules and body control units. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly mounted - meets industrial EMC immunity requirements without additional staging. |
| Low leakage current | <1.0 µA at VWM = 26 V - minimizes standby power loss and avoids false triggering in high-impedance sensor bias networks. |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60 % RH - enables direct placement from reel without baking, reducing manufacturing overhead. |
Applications
| Industrial Motor Drives | Automotive Camera Modules |
|---|---|
|
Use Scenario: Protection of gate driver ICs and isolated communication lines against inductive kickback from BLDC motor phase switching. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across power supply rails and signal inputs to limit transient excursions to safe levels. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces while maintaining signal integrity during 100 A+ switching events. |
Use Scenario: Shielding MIPI CSI-2 differential pairs and power rails in rear-view and surround-view cameras exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Fast-response TVS deployed adjacent to connector entry points to shunt ESD and surge energy before reaching serializer/deserializer ICs. Use Value: Enables compliance with ISO 10605 (30 kV air, 15 kV contact) and ISO 7637-2 Pulse 5a without degrading 1.5 Gbps data eye opening. |
| Telecom Power Feeds | Industrial Sensor Nodes |
|
Use Scenario: Safeguarding PoE-powered Ethernet PHYs and DC-DC converters against lightning-induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary-level transient suppression upstream of active protection circuits, absorbing bulk surge energy before secondary clamping stages. Use Value: Reduces required MOV size and extends lifetime of downstream TVS arrays by limiting peak voltage seen by secondary devices to ≤45 V. |
Use Scenario: Securing analog front-ends of pressure, temperature, and vibration sensors connected to long cables in factory automation cabinets. IC Role / Device Role / Timing Role: Low-capacitance (CJ ≈ 100 pF typical at 0 V) bidirectional clamp on 24 V loop-powered signal lines. Use Value: Maintains <±0.1 % full-scale accuracy during 1 kV/µs transients by limiting overshoot to <45 V and avoiding rectification artifacts in AC-coupled paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26CA-E3/52 | Commercial-grade (non-AEC-Q101), same electrical specs and SMB package; RoHS-compliant but not automotive-qualified. | Lacks automotive qualification testing - suitable for industrial/commercial equipment where AEC-Q101 is not mandated. | Select SMBJ26CAHE3_A/H when automotive qualification, extended temperature validation, or enhanced surge endurance is required. |
| SMCJ26CAHE3_A/H | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; 1500 W PPPM, lower RθJA (50 °C/W). | Higher power handling and better thermal dissipation - preferred for high-energy surge environments like outdoor telecom cabinets. | Choose SMBJ26CAHE3_A/H for space-constrained layouts where 600 W suffices and board area is premium. |
Compared with SMBJ26CA-E3/52, SMBJ26CAHE3_A/H adds AEC-Q101 qualification and tighter process controls for automotive use; compared with SMCJ26CAHE3_A/H, it trades 2.5× lower surge power for 40 % smaller footprint and compatible reflow profiles.
Availability
SMBJ26CAHE3_A/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive camera modules, telecom power feeds, and industrial sensor nodes requiring stable component supply and automotive-grade reliability assurance.
Supply support for SMBJ26CAHE3_A/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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with emphasis on high-reliability, high-efficiency, and application-specific performance.
The SMBJ series targets board-level transient protection in automotive, industrial, and telecom systems, combining compact SMB packaging with AEC-Q101 qualification and repeatable clamping behavior under real-world surge conditions.
FAQ
What is the clamping voltage of SMBJ26CAHE3_A/H at its rated peak pulse current?
The SMBJ26CAHE3_A/H has a maximum clamping voltage (VC) of 42.1 V at its rated peak pulse current (IPPM) of 14.3 A, measured using the standard 10/1000 µs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in the Vishay datasheet Document Number 88392, page 2. The SMBJ26CAHE3_A/H maintains this clamping performance bidirectionally due to its symmetrical construction.
Is SMBJ26CAHE3_A/H qualified for automotive applications?
Yes, SMBJ26CAHE3_A/H is AEC-Q101 qualified, as indicated by the "HE3" suffix in its part number and confirmed in the Vishay ordering information table (page 3, footnote 1). This qualification covers stress tests including temperature cycling, high-temperature operating life, and surge endurance - making SMBJ26CAHE3_A/H suitable for use in automotive subsystems such as camera modules, body control units, and infotainment power supplies.
What is the standoff voltage and breakdown range for SMBJ26CAHE3_A/H?
The SMBJ26CAHE3_A/H has a reverse stand-off voltage (VWM) of 26 V and a minimum/maximum breakdown voltage (VBR) of 28.9 V / 31.9 V at test current IT = 1 mA, per the Electrical Characteristics table on page 2 of the Vishay datasheet. These values confirm its suitability for protecting 24 V nominal systems where transient margins must exceed normal operating voltage while remaining below critical IC absolute maximum ratings.
Does SMBJ26CAHE3_A/H have polarity markings on the package?
No, SMBJ26CAHE3_A/H does not feature polarity markings because it is a bidirectional TVS diode. As stated in the Mechanical Data section (page 1), "no marking on bidirectional types." Its symmetrical internal structure allows identical clamping behavior in both directions, eliminating the need for orientation-sensitive placement during automated assembly - a key advantage for differential signal line protection.
What is the thermal resistance and maximum junction temperature of SMBJ26CAHE3_A/H?
The SMBJ26CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads, and a maximum junction temperature (TJ) of +150 °C. These parameters are specified in the Thermal Characteristics table (page 3) and govern power derating above 25 °C ambient - critical for sustained surge duty cycles in enclosed enclosures or high-temperature industrial environments.
SMBJ26CAHE3_A/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:
- Obsolete
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ26CAHE3_A/H FAQ
1.How can I place an order for SMBJ26CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ26CAHE3_A/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 SMBJ26CAHE3_A/H reliable?
The price and inventory of SMBJ26CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ26CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ26CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ26CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ26CAHE3_A/H?
SMBJ26CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ26CAHE3_A/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 SMBJ26CAHE3_A/H?
For technical support, including SMBJ26CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ26CAHE3_A/H requirements.
6.How does Aetrix verify that SMBJ26CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ26CAHE3_A/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 SMBJ26CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ26CAHE3_A/H?
All SMBJ26CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ26CAHE3_A/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 SMBJ26CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ26CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ26CAHE3_A/H Tags
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