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Vishay General Semiconductor - Diodes Division SMB8J26CAHE3_A/H
- Part No.:
- SMB8J26CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J26CAHE3_A/H.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,536
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Product details
Overview
SMB8J26CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 26 V stand-off voltage (VWM), 42.1 V maximum clamping voltage (VC) at 19.0 A peak pulse current (IPPM), and 800 W peak pulse power (10/1000 µs waveform), with AEC-Q101 qualification for automotive use.
For engineers reviewing the SMB8J26CAHE3_A/H datasheet, SMB8J26CAHE3_A/H pinout, SMB8J26CAHE3_A/H application, or SMB8J26CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, low leakage (<1.0 µA at VWM), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode uses a glass-passivated silicon junction to achieve fast response time (<1 ns) and low incremental surge resistance, enabling effective suppression of ESD, lightning-induced transients, and inductive switching spikes. Its bidirectional configuration provides symmetrical clamping across both polarities without requiring polarity-aware layout.
The device operates over -55 °C to +150 °C junction temperature range and exhibits typical thermal resistance of 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation under sustained surge stress when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR min/max | 28.9 V / 31.9 V at 1.0 mA - Breakdown voltage tolerance band ensures predictable turn-on threshold across production lots. |
| VC @ IPPM | 42.1 V at 19.0 A - Clamping voltage under 10/1000 µs surge; limits downstream IC voltage stress during worst-case transients. |
| PPPM | 800 W - Peak pulse power handling capacity; determines survivability against standardized lightning/surge waveforms. |
| IPPM | 19.0 A - Peak pulse current rating (10/1000 µs); sets minimum trace width and PCB copper area requirements for robust layout. |
| ID @ VWM | <1.0 µA - Reverse leakage at stand-off voltage; critical for low-power sensor and battery-backed circuits. |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood automotive and industrial environments without derating. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking; matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Transient conduction path (bidirectional) | Both terminals function identically; no cathode band-symmetrical clamping enables simplified PCB routing. |
| Anode (Cathode) | Transient conduction path (bidirectional) | Identical electrical behavior to opposite terminal; eliminates orientation constraints during automated placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling prior to assembly. |
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime, even under high-humidity or high-temperature operating conditions. |
| Low profile SMB package | Height ≤ 2.20 mm enables use in space-constrained modules such as ADAS sensors and infotainment ECUs. |
| 800 W peak pulse power | Meets ISO 7637-2 Pulse 3b and IEC 61000-4-5 Level 3 surge immunity requirements with margin. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in engine control units. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching PHY layer. Use Value: Maintains signal integrity below 42.1 V clamp during 19.0 A surges, preventing latch-up or damage to 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding differential CAN H/L lines against coupled surges in factory automation controllers and motor drives. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line) with matched VBR to preserve differential signaling integrity during transient events. Use Value: Symmetrical 26 V stand-off and 42.1 V clamping ensure minimal common-mode distortion while meeting ISO 11898-2 EMC requirements. |
| Consumer USB Port Protection | Telecom Power Input Stage |
|
Use Scenario: Guarding USB 2.0 data lines and VBUS against ESD (IEC 61000-4-2 ±15 kV contact) in portable docking stations and peripherals. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to connector to minimize signal degradation on 480 Mbps differential pairs. Use Value: Sub-1 µA leakage at 26 V prevents battery drain; fast <1 ns response captures ESD events before USB PHY damage occurs. |
Use Scenario: Front-end surge suppression on 24 V/48 V telecom power rails feeding PoE injectors and remote radio units. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC/DC converters and hot-swap controllers to limit input rail overshoot. Use Value: 800 W rating handles repeated 10/1000 µs surges up to 19.0 A, extending system uptime in lightning-prone outdoor installations. |
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 SMB package, 26 V VWM, but rated for 600 W PPPM and 14.3 A IPPM; commercial grade (non-AEC-Q101). | Lacks automotive qualification; suitable for industrial/commercial systems where AEC-Q101 is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and surge energy is ≤600 W. |
| SMCJ26CAHE3_A/H | Same AEC-Q101 qualification and 26 V rating, but in larger SMC (DO-214AB) package with 1500 W PPPM and 38.4 A IPPM. | Higher power handling requires larger PCB footprint; better suited for primary power rail protection vs. signal-level protection. | Choose when system-level surge tests exceed 800 W or when thermal dissipation demands lower RθJA (40 °C/W vs. 72 °C/W). |
Compared with SMBJ26CA-E3/52, SMB8J26CAHE3_A/H delivers 33 % higher surge power handling and automotive qualification; versus SMCJ26CAHE3_A/H, it trades 47 % lower footprint for 47 % less peak power capacity-ideal for space-constrained automotive signal nodes.
Availability
SMB8J26CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN networks, consumer USB ports, and telecom power inputs requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMB8J26CAHE3_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 is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMB8J series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-density, high-reliability transient suppression in automotive and industrial environments where compact size and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMB8J26CAHE3_A/H at its rated peak pulse current?
The SMB8J26CAHE3_A/H has a maximum clamping voltage (VC) of 42.1 V when subjected to its rated peak pulse current (IPPM) of 19.0 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry remains protected below this voltage threshold during surge events. The SMB8J26CAHE3_A/H maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is SMB8J26CAHE3_A/H suitable for automotive applications?
Yes, SMB8J26CAHE3_A/H is explicitly AEC-Q101 qualified and manufactured with automotive-grade process controls, including extended temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. Its HE3 suffix denotes RoHS-compliant and AEC-Q101 qualified construction, making SMB8J26CAHE3_A/H appropriate for under-hood and cabin applications such as ADAS camera modules, body control units, and infotainment systems.
What is the mounting pad layout recommendation for SMB8J26CAHE3_A/H?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for SMB8J26CAHE3_A/H to achieve rated 800 W pulse power dissipation and proper thermal relief. The SMB (DO-214AA) outline drawing confirms terminal width of 0.086" (2.20 mm) min and length of 0.155" (3.94 mm), with recommended solder mask defined pads to maximize thermal conduction. Use of this layout ensures SMB8J26CAHE3_A/H meets its published IPPM and derating curves.
Does SMB8J26CAHE3_A/H have polarity markings?
No, SMB8J26CAHE3_A/H is a bidirectional TVS diode and carries no cathode band or polarity marking on its SMB (DO-214AA) package. Both terminals are electrically identical, providing symmetrical clamping for AC-coupled or differential signal lines. This eliminates orientation errors during automated placement and simplifies PCB design for applications like CAN bus or USB differential pairs where polarity independence is advantageous.
What is the maximum reverse leakage current for SMB8J26CAHE3_A/H at its stand-off voltage?
The SMB8J26CAHE3_A/H exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated stand-off voltage (VWM) of 26 V, measured at 25 °C ambient. This ultra-low leakage preserves signal integrity and minimizes quiescent power loss in battery-powered or high-impedance sensor circuits. Leakage remains within specification across the full -55 °C to +150 °C operating junction temperature range, ensuring consistent performance in harsh environments.
SMB8J26CAHE3_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):
- 19A
- Power - Peak Pulse:
- 800W
- 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 (SMB)
SMB8J26CAHE3_A/H FAQ
1.How can I place an order for SMB8J26CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J26CAHE3_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 SMB8J26CAHE3_A/H reliable?
The price and inventory of SMB8J26CAHE3_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 SMB8J26CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMB8J26CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J26CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J26CAHE3_A/H?
SMB8J26CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J26CAHE3_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 SMB8J26CAHE3_A/H?
For technical support, including SMB8J26CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J26CAHE3_A/H requirements.
6.How does Aetrix verify that SMB8J26CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB8J26CAHE3_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 SMB8J26CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMB8J26CAHE3_A/H?
All SMB8J26CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J26CAHE3_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 SMB8J26CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMB8J26CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J26CAHE3_A/H Tags
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