My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ26AHE3_A/H
;;2.jpg)
- Part No.:
- SMBJ26AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ26AHE3_A/H.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,668
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ26AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. 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 (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform.
For engineers reviewing the SMBJ26AHE3_A/H datasheet, SMBJ26AHE3_A/H pinout, SMBJ26AHE3_A/H application, or SMBJ26AHE3_A/H equivalent, key selection criteria include its AEC-Q101 qualification for automotive use, unidirectional polarity with cathode band marking, low incremental surge resistance, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below its 26 V stand-off voltage and rapidly transitions to low-impedance conduction when transient voltages exceed its 28.9–31.9 V breakdown threshold. Its response time is sub-nanosecond, enabling protection of downstream ICs, MOSFETs, and sensor signal lines before damage occurs.
The device uses a glass-passivated silicon junction and is rated for 150 °C maximum junction temperature. It meets MSL Level 1 per J-STD-020 with 260 °C reflow peak, has matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and supports repetitive surge duty cycle of 0.01 %.
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 for protected circuitry. |
| VBR (Breakdown Voltage) | 28.9–31.9 V at 1 mA - Voltage at which device enters avalanche conduction; ensures reliable triggering above normal operating rail. |
| VC (Clamping Voltage) | 42.1 V at IPPM = 14.3 A - Peak voltage seen by protected load during 10/1000 µs transient; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Maximum transient energy absorption capability under standardized 10/1000 µs waveform; enables robust surge handling. |
| ID (Reverse Leakage) | 1.0 µA max. at VWM - Ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max. | 150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking on unidirectional variants. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or lower-potential node in unidirectional TVS configuration. | Provides return path for surge current; must be routed with low-inductance trace to minimize clamping overshoot. |
| Cathode | Current exit terminal in forward bias; marked with band; connected to protected line (e.g., power rail or signal line). | Defines polarity-sensitive connection point; incorrect orientation prevents clamping and risks device failure. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without derating in typical PCB layouts. |
| AEC-Q101 qualified (HE3 suffix) | Validates suitability for automotive powertrain, body control, and ADAS modules requiring extended temperature and lifetime reliability. |
| Glass passivated junction | Improves long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for harsh-environment deployments. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning, reducing manufacturing complexity and cost. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on protected ICs-e.g., ensures <42.1 V seen by a 3.3 V or 5 V logic interface during surge event. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-supplied ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground. Use Value: Limits transient voltage to ≤42.1 V, preventing latch-up or gate oxide damage in MCU and CAN transceivers. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector interface to shunt ESD and cable discharge events. Use Value: Sub-nanosecond response clamps ±8 kV contact ESD (IEC 61000-4-2) before signal distortion or ADC saturation occurs. |
| Telecom DC Power Input Protection | Consumer USB Port Surge Suppression |
|
Use Scenario: Safeguarding PoE-powered switches and base station RF modules from induced surges on 48 V DC input. IC Role / Device Role / Timing Role: Primary-level TVS on DC input before DC/DC converter stage. Use Value: Absorbs 600 W surge energy while maintaining <42.1 V clamping, preserving upstream rectifier and controller ICs. |
Use Scenario: Adding transient immunity to USB 2.0 data lines and VBUS in smart home hubs and docking stations. IC Role / Device Role / Timing Role: Discrete unidirectional TVS on VBUS line, referenced to system ground. Use Value: Withstands 10/1000 µs surges up to 14.3 A while adding <0.5 pF parasitic capacitance-no USB signal integrity degradation. |
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_A/H | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free materials are mandated by OEM or regional environmental regulations. | Direct material substitution when halogen-free compliance is required; same footprint, thermal, and electrical behavior. |
| SMCJ26AHE3_A/H | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package with 1500 W PPPM rating and higher IPPM (32.4 A). | Used where higher surge energy handling is needed (e.g., front-end AC/DC inputs), but requires larger PCB area and different pad layout. | Choose when system-level surge test requirements exceed 600 W-e.g., IEC 61000-4-5 Level 5-while retaining same clamping performance. |
Compared with SMBJ26AHE3_A/H, SMBJ26AHM3_A/H offers identical protection performance with halogen-free construction, whereas SMCJ26AHE3_A/H delivers 2.5× higher surge power handling at the cost of increased board space and thermal mass.
Availability
SMBJ26AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power supply protection requiring stable component supply across multi-year production cycles.
Supply support for SMBJ26AHE3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-reliability transient suppression in automotive, industrial, and communications systems-delivering consistent clamping performance across temperature and lifetime while meeting stringent AEC-Q101 and RoHS requirements.
FAQ
What is the clamping voltage of SMBJ26AHE3_A/H at its rated peak pulse current?
The SMBJ26AHE3_A/H has a maximum clamping voltage (VC) of 42.1 V at its specified peak pulse current (IPPM) of 14.3 A under the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper voltage limit imposed on protected circuitry during a standardized surge event. The SMBJ26AHE3_A/H maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is SMBJ26AHE3_A/H suitable for automotive applications?
Yes, SMBJ26AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and high-temperature operating life per AEC-Q101 Rev D. The SMBJ26AHE3_A/H is commonly deployed in body control modules, infotainment power supplies, and ADAS camera interfaces where robust transient immunity and long-term reliability are mandatory.
How does the SMBJ26AHE3_A/H differ from bidirectional TVS diodes like SMBJ26CA?
The SMBJ26AHE3_A/H is unidirectional and functions only in reverse-bias avalanche mode, with polarity marked by a cathode band; it blocks forward current above ~3.5 V. In contrast, SMBJ26CA is bidirectional and symmetrical, clamping in both directions-ideal for AC lines or differential signals. The SMBJ26AHE3_A/H offers lower leakage (<1.0 µA at 26 V) and tighter VBR tolerance than its bidirectional counterpart, making it preferred for DC rail protection where polarity is fixed.
What is the thermal resistance of SMBJ26AHE3_A/H, and how does it affect PCB layout?
The SMBJ26AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repeated surges, designers must provide adequate copper area and avoid thermal bottlenecks. The SMBJ26AHE3_A/H's RθJL of 20 °C/W indicates efficient heat transfer to PCB traces-so wide, short copper pours directly connected to both terminals significantly improve sustained power dissipation.
Can SMBJ26AHE3_A/H be used in place of SMAJ26AHE3_A/H?
No-SMBJ26AHE3_A/H and SMAJ26AHE3_A/H are not interchangeable due to differing package sizes and thermal/power capabilities. The SMAJ series uses the smaller SMA (DO-214AC) package with 400 W PPPM, while SMBJ26AHE3_A/H uses the larger SMB (DO-214AA) package rated for 600 W. Substituting SMBJ26AHE3_A/H into an SMA footprint causes solder joint stress and insufficient creepage; using SMAJ26AHE3_A/H in an SMB layout wastes board area and underutilizes surge capacity. The SMBJ26AHE3_A/H requires its defined SMB pad layout per Vishay document 88392.
SMBJ26AHE3_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:
- 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_A/H FAQ
1.How can I place an order for SMBJ26AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ26AHE3_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 SMBJ26AHE3_A/H reliable?
The price and inventory of SMBJ26AHE3_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 SMBJ26AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ26AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ26AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ26AHE3_A/H?
SMBJ26AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ26AHE3_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 SMBJ26AHE3_A/H?
For technical support, including SMBJ26AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ26AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ26AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ26AHE3_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 SMBJ26AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ26AHE3_A/H?
All SMBJ26AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ26AHE3_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 SMBJ26AHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ26AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ26AHE3_A/H 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 …
