My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB8J26CA-M3/52
;;2.jpg)
- Part No.:
- SMB8J26CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J26CA-M3/52.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,387
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB8J26CA-M3/52 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 (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J26CA-M3/52 datasheet, SMB8J26CA-M3/52 pinout, SMB8J26CA-M3/52 application, or SMB8J26CA-M3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance (M3 suffix), and thermal resistance (RθJA = 72 °C/W) for PCB-level thermal design validation.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its bidirectional symmetry enables protection of AC-coupled or differential lines without polarity concerns.
Rated for -55 °C to +150 °C junction temperature, it meets MSL Level 1 per J-STD-020 (260 °C peak reflow), and its 72 °C/W junction-to-ambient thermal resistance requires minimum 5.0 mm × 5.0 mm copper pad area per terminal for full 800 W rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse operating voltage before clamping initiates; defines safe DC/AC RMS working range. |
| VBR (min/max) | 28.9 V / 31.9 V at 1 mA - breakdown threshold range where avalanche conduction begins reliably. |
| VC @ IPPM | 42.1 V at 19.0 A - clamped voltage seen by protected circuit during 10/1000 µs surge; determines downstream voltage stress. |
| PPPM | 800 W - peak transient power dissipation capability; defines energy-handling limit under standardized surge waveform. |
| ID @ VWM | 1.0 µA - reverse leakage at stand-off voltage; ensures minimal quiescent power loss and signal integrity in high-impedance circuits. |
| RθJA | 72 °C/W - junction-to-ambient thermal resistance; mandates ≥5.0 mm × 5.0 mm copper pad per lead to sustain full power rating. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode (symmetrical) | Bidirectional avalanche junction | Either terminal serves as cathode or anode depending on transient polarity; no color band or marking required. |
| Lead 1 | Connection to PCB pad (cathode side in unidirectional variants) | Matte tin-plated, solderable per J-STD-002; supports automated placement and reflow up to 260 °C peak. |
| Lead 2 | Connection to PCB pad (anode side in unidirectional variants) | Identical metallization and mechanical specs as Lead 1; bidirectional symmetry eliminates orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | M3 suffix confirms compliance with JEDEC J-STD-201 Class 2 whisker resistance and environmental regulations. |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Low-profile SMB package | Height ≤ 2.20 mm enables compact layout in space-constrained modules such as ECUs and motor drivers. |
| Glass-passivated junction | Ensures stable breakdown characteristics, low leakage, and long-term reliability under repeated surge stress. |
| MSL Level 1 rating | Supports standard SMT reflow without moisture sensitivity concerns - no baking required prior to assembly. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector or IC input pins to shunt surge energy before it reaches sensitive circuitry. Use Value: Limits transient voltage to ≤42.1 V during 19.0 A surges, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding digital input/output channels on programmable logic controllers exposed to inductive switching noise from solenoids and relays. IC Role / Device Role / Timing Role: Standoff-rated TVS installed across each I/O line to ground, absorbing repetitive 800 W transients without degradation. Use Value: Maintains 1.0 µA leakage at 26 V, ensuring compatibility with high-impedance optocoupler or microcontroller input thresholds. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
|
Use Scenario: Shielding Ethernet PHY magnetics and RS-485 transceivers against lightning-induced surges and EFT bursts per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair lines, coordinated with secondary GDT or polymer PTC for staged protection. Use Value: Clamps within nanoseconds to 42.1 V, limiting stress on 2.5 V/3.3 V PHY receivers while sustaining 800 W single-event rating. |
Use Scenario: Input-stage surge suppression on 5 V/12 V USB-C and barrel-jack power inputs subjected to user-handling ESD and accidental overvoltage. IC Role / Device Role / Timing Role: First-line defense between connector and DC-DC converter input, rated for repeated 19.0 A surges. Use Value: Halogen-free M3 construction meets consumer safety standards; 72 °C/W RθJA allows thermal management on standard FR-4 without heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J26CA-E3/52 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3). | Preferred for commercial-grade designs where halogen-free requirement is absent. | Select E3 when cost optimization is prioritized and halogen-free mandate does not apply. |
| SMAJ26CA-M3 | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W). | Suitable only for lower-energy transients or space-constrained layouts where 800 W is not required. | Choose SMAJ26CA-M3 only if board area is critical and surge threat level is ≤400 W. |
Compared with SMB8J26CA-M3/52, the E3 variant offers identical protection performance with reduced environmental compliance, while SMAJ26CA-M3 trades power handling and thermal performance for footprint reduction - neither is pin-compatible due to differing package outlines (SMB vs. SMA).
Availability
SMB8J26CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMB8J26CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMB8JxxCA series targets high-reliability transient suppression in automotive and industrial environments, engineered for robustness against ISO 7637-2, IEC 61000-4-5, and ESD events - with AEC-Q101 qualification built into the M3 variant.
FAQ
What is the clamping voltage of SMB8J26CA-M3/52 under a 10/1000 µs surge?
The SMB8J26CA-M3/52 clamps to a maximum of 42.1 V when subjected to its rated 19.0 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured at the device terminals under specified test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads), and represents the upper voltage limit imposed on protected circuitry during surge events.
Is SMB8J26CA-M3/52 suitable for automotive applications?
Yes, SMB8J26CA-M3/52 is AEC-Q101 qualified and explicitly rated for automotive use. Its halogen-free M3 construction, MSL Level 1 reflow compatibility, and operation from -55 °C to +150 °C make it appropriate for engine bay sensors, body control modules, and ADAS interfaces where reliability under thermal and electrical stress is critical.
How does the SMB8J26CA-M3/52 differ from unidirectional variants like SMB10J26A-M3/52?
SMB8J26CA-M3/52 is bidirectional with symmetric clamping behavior on both polarities and no cathode marking, whereas SMB10J26A-M3/52 is unidirectional, features a cathode band, and delivers higher peak pulse power (1000 W vs. 800 W). The "C" in SMB8J26CA denotes bidirectionality, and the "8" indicates 800 W rating - distinct from the "10" (1000 W) unidirectional family.
What PCB layout guidance applies to SMB8J26CA-M3/52 for full 800 W rating?
To achieve the full 800 W peak pulse power rating, SMB8J26CA-M3/52 must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Smaller pads increase thermal resistance and derate power handling; thermal simulation or empirical testing is recommended if pad area is constrained.
Does SMB8J26CA-M3/52 require orientation during placement?
No, SMB8J26CA-M3/52 is a bidirectional TVS diode and has no polarity marking - the SMB (DO-214AA) package is symmetrical, and either terminal may connect to line or ground. This eliminates orientation errors during automated placement and simplifies layout for differential or AC-coupled signal paths.
SMB8J26CA-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):
- 19A
- Power - Peak Pulse:
- 800W
- 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)
SMB8J26CA-M3/52 FAQ
1.How can I place an order for SMB8J26CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J26CA-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 SMB8J26CA-M3/52 reliable?
The price and inventory of SMB8J26CA-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 SMB8J26CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J26CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J26CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J26CA-M3/52?
SMB8J26CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J26CA-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 SMB8J26CA-M3/52?
For technical support, including SMB8J26CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J26CA-M3/52 requirements.
6.How does Aetrix verify that SMB8J26CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J26CA-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 SMB8J26CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J26CA-M3/52?
All SMB8J26CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J26CA-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 SMB8J26CA-M3/52 part is unused and in its original packaging.
Return procedure for SMB8J26CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J26CA-M3/52 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
