My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ26AHE3/5B
;;2.jpg)
- Part No.:
- SMBJ26AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ26AHE3/5B.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,356
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ26AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. 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 - deployed on power rails and signal lines in industrial motor drives and automotive ECUs.
For engineers reviewing the SMBJ26AHE3/5B datasheet, SMBJ26AHE3/5B pinout, SMBJ26AHE3/5B application, or SMBJ26AHE3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and packaging details for tape-and-reel delivery (3200 pcs per 13" reel).
Technical Context
This TVS diode operates as a clamping-type overvoltage protector: under normal conditions it presents high impedance (>1 µA leakage at 26 V), then rapidly transitions to low-impedance conduction when transient voltage exceeds VBR, limiting downstream voltage to ≤42.1 V. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability across thermal cycles.
The device is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports automated SMT placement, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and carries AEC-Q101 qualification - confirming suitability for automotive powertrain and body electronics where transient immunity and process consistency are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 26 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 28.9–31.9 V at 1 mA - Confirmed minimum/maximum voltage at which device enters avalanche conduction; ensures predictable turn-on behavior |
| VC (Clamping Voltage) | 42.1 V at IPPM = 14.3 A - Peak voltage seen by protected circuit during 10/1000 µs transient; directly limits stress on downstream ICs |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized 10/1000 µs surge; enables protection against IEC 61000-4-5 Level 4 surges |
| IPPM (Peak Pulse Current) | 14.3 A - Maximum transient current the device safely shunts without degradation; derived from VC and PPPM (P = V × I) |
| TJmax | +150 °C - Maximum allowable junction temperature; sets thermal design boundary for PCB copper pad sizing and ambient derating |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; used to calculate temperature rise under DC power dissipation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band (unidirectional only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; forms low-impedance path to ground during reverse-transient clamping |
| Cathode | Current exit terminal during forward conduction; marked with band | Connected to higher-potential side (e.g., VCC rail or signal line); defines directionality and clamping reference point |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS power supplies, with extended temperature cycling and humidity testing |
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against severe transients such as load dump (ISO 7637-2) and EFT bursts (IEC 61000-4-4) |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage overshoot during clamping, reducing risk of latch-up or gate oxide damage in protected MOSFETs and microcontrollers |
| MSL Level 1 (260 °C peak reflow) | Supports lead-free reflow assembly without preconditioning; eliminates moisture-related popcorning risk during manufacturing |
| Glass passivated junction | Provides stable VBR tolerance and low leakage drift over time and temperature, critical for long-life industrial deployments |
Applications
| Automotive Power Supply Protection | Industrial Motor Drive Control |
|---|---|
|
Use Scenario: Protecting 24 V CAN bus transceivers and MCU I/O pins from load-dump transients and relay coil flyback in vehicle body control modules. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VCC and GND, triggered within <1 ps to clamp spikes up to 120 V. Use Value: Limits voltage seen by ISO 11898-compliant transceivers to ≤42.1 V, preventing permanent damage while maintaining communication integrity during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding gate drivers and current-sense amplifiers in 3-phase inverter stages exposed to IGBT switching noise and inductive kickback. IC Role / Device Role / Timing Role: Mounted across DC-link rails and low-side sense resistors to absorb repetitive 600 W surges with <10 ns response. Use Value: Maintains ±1% current measurement accuracy by preventing amplifier saturation and avoids gate driver latch-up during 100 kHz PWM edge-induced transients. |
| Telecom Power Interface | Consumer Appliance Control Board |
|
Use Scenario: Shielding PoE-powered Ethernet PHYs and PMICs from lightning-induced surges entering via RJ45 magnetics or AC/DC adapter inputs. IC Role / Device Role / Timing Role: First-line protection device on primary-side 48 V input, coordinated with MOVs and gas discharge tubes in multi-stage architecture. Use Value: Clamps 1 kV/0.5 kA combination wave (IEC 61000-4-5) to <45 V within 1 ns, enabling use of cost-effective 3.3 V/5 V logic without external voltage translators. |
Use Scenario: Securing microcontroller reset lines and touch-sensing electrodes in washing machine control boards subject to ESD and relay contact bounce. IC Role / Device Role / Timing Role: Localized TVS on 3.3 V supply rail and capacitive touch traces, placed adjacent to connectors and switches. Use Value: Absorbs >15 kV HBM ESD pulses (IEC 61000-4-2) without degradation, preserving touch sensitivity and eliminating false resets during user interaction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26AHM3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification | No functional difference; selected when halogen-free material compliance is mandated by OEM environmental policy | Direct substitution where halogen-free bill-of-materials is required; same footprint, thermal performance, and reliability data |
| SMCJ26AHE3/5B | Same VWM/VBR/VC but in larger SMC (DO-214AB) package; 1500 W PPPM, RθJA = 40 °C/W | Higher surge capacity and better thermal dissipation; suited for high-energy transients where PCB space allows | Choose when system-level surge testing exceeds 600 W requirements or when ambient temperature exceeds 85 °C with sustained power dissipation |
Compared with SMBJ26AHE3/5B, SMBJ26AHM3/5B offers identical protection performance with halogen-free construction, while SMCJ26AHE3/5B trades compact size for 2.5× higher surge energy handling and superior thermal management - enabling selection based on environmental compliance or system-level surge severity.
Availability
SMBJ26AHE3/5B is available at Aetrix Electronics and suitable for automotive ECU designs, industrial motor controllers, telecom power interfaces, and consumer appliance control boards requiring stable component supply with full traceability and AEC-Q101 assurance.
Supply support for SMBJ26AHE3/5B 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, precision, and automotive-grade qualification.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where consistent clamping performance and long-term stability under thermal stress are mandatory.
FAQ
What is the clamping voltage of SMBJ26AHE3/5B at its rated peak pulse current?
The SMBJ26AHE3/5B has a maximum clamping voltage (VC) of 42.1 V at its rated peak pulse current (IPPM) of 14.3 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees the protected circuit will not experience more than 42.1 V during a defined surge event, making SMBJ26AHE3/5B suitable for safeguarding 3.3 V, 5 V, and 24 V logic and power domains.
Is SMBJ26AHE3/5B qualified for automotive applications?
Yes, SMBJ26AHE3/5B is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3". This qualification covers stress tests including temperature cycling, humidity bias, and high-temperature operating life - validating SMBJ26AHE3/5B for use in automotive body electronics, infotainment power supplies, and ADAS sensor interfaces where reliability under vibration and thermal extremes is essential.
What does the "HE3" suffix indicate in SMBJ26AHE3/5B?
The "HE3" suffix in SMBJ26AHE3/5B denotes RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade "E3" parts and halogen-free "HM3" versions. The "HE3" marking confirms that SMBJ26AHE3/5B meets both environmental compliance (lead-free, RoHS) and automotive reliability standards - critical for Tier 1 supplier BOMs and OEM audits.
How does SMBJ26AHE3/5B differ from bidirectional variants like SMBJ26CA?
SMBJ26AHE3/5B is unidirectional, with polarity marked by a cathode band and intended for DC rail protection (e.g., VCC-to-GND). In contrast, SMBJ26CA is bidirectional, lacks polarity marking, and protects AC-coupled or differential signal lines (e.g., RS-485, CAN). Their VBR and VC values differ slightly due to symmetrical avalanche design - SMBJ26AHE3/5B cannot substitute for SMBJ26CA in AC applications without circuit redesign.
What PCB pad layout is recommended for optimal thermal performance of SMBJ26AHE3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad for each terminal of SMBJ26AHE3/5B to achieve the rated RθJA of 100 °C/W. Using smaller pads increases thermal resistance, causing higher junction temperatures during repetitive surges or DC leakage - potentially degrading long-term reliability. For high-duty-cycle applications, adding internal thermal vias beneath pads is recommended to enhance heat transfer to inner layers.
SMBJ26AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 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)
SMBJ26AHE3/5B FAQ
1.How can I place an order for SMBJ26AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ26AHE3/5B 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 SMBJ26AHE3/5B reliable?
The price and inventory of SMBJ26AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ26AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ26AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ26AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ26AHE3/5B?
SMBJ26AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ26AHE3/5B 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 SMBJ26AHE3/5B?
For technical support, including SMBJ26AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ26AHE3/5B requirements.
6.How does Aetrix verify that SMBJ26AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ26AHE3/5B 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 SMBJ26AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ26AHE3/5B?
All SMBJ26AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ26AHE3/5B, 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 SMBJ26AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ26AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ26AHE3/5B 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 …
