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Vishay General Semiconductor - Diodes Division SMBJ24AHE3_B/H
- Part No.:
- SMBJ24AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ24AHE3_B/H.pdf
- Description:
- 600W,24V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,362
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Product details
Overview
SMBJ24AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. It features a 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 38.9 V maximum clamping voltage (VC) at 15.4 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMBJ24AHE3_B/H datasheet, SMBJ24AHE3_B/H pinout, SMBJ24AHE3_B/H application, or SMBJ24AHE3_B/H equivalent, key selection considerations include its AEC-Q101 qualification, low incremental surge resistance, fast response time (<1 ns), and suitability for automotive power line and sensor interface protection where robust 24 V system-level surge immunity is required.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-banded polarity, leveraging a glass-passivated silicon junction for stable avalanche behavior under transient stress. Its thermal resistance (RθJA = 100 °C/W) and junction temperature range (−55 °C to +150 °C) support reliable operation in automotive under-hood and industrial control environments.
The device complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) immunity standards when applied with appropriate PCB layout-specifically using 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal-and delivers consistent clamping performance up to 0.01% duty cycle repetitive surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before significant leakage; sets system working voltage ceiling for 24 V rail protection. |
| VBR (min/max) | 26.7 V / 29.5 V at IT = 1 mA - Confirmed breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamping voltage limits downstream IC/MOSFET stress during 10/1000 µs transients. |
| PPPM | 600 W - Peak pulse power handling capacity defines survivability against standardized lightning/surge waveforms. |
| IPPM | 15.4 A - Peak pulse current capability directly correlates with energy absorption (≈ 6.16 J for 10/1000 µs). |
| Junction Temp. Range | −55 °C to +150 °C - Enables deployment in automotive engine compartments and industrial enclosures without derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic modules requiring reliability per stress test conditions including HTOL, TCT, and ESD. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point in unidirectional configuration | Connected to protected line (e.g., 24 V supply); clamps positive transients to ground when voltage exceeds VBR. |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping path during overvoltage events on cathode-connected lines. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 24 V lines without external series impedance. |
| 38.9 V clamping voltage at 15.4 A | Limits voltage seen by downstream 30 V-rated MOSFETs or CAN transceivers during surge events, preserving functional safety margins. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain, body control, and ADAS modules requiring zero-failure field reliability over 15-year service life. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving protection fidelity. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply rails in body control modules (BCM), lighting drivers, and HVAC actuators from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC/DC converter input stage. Use Value: Limits transient voltage to ≤38.9 V, preventing damage to 40 V-input buck regulators and ensuring ASIL-B compliance via robust surge immunity. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules from cable-coupled EFT and surge noise. IC Role / Device Role / Timing Role: Point-of-entry TVS on twisted-pair signal lines upstream of instrumentation amplifier inputs. Use Value: Suppresses sub-100 ns ESD events to <1 kV while maintaining signal integrity below 1 MHz due to low junction capacitance (~250 pF at 0 V). |
| Telecom DC Power Feeding | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Safeguarding PoE-powered remote radio units (RRUs) receiving 24–48 V DC feed over long outdoor cables susceptible to induced lightning surges. IC Role / Device Role / Timing Role: Primary surge suppression element on DC input before hot-swap controller and backup capacitor bank. Use Value: Absorbs up to 600 W of surge energy without degradation, enabling compliance with ITU-T K.21 Basic Protection Level (BPL) requirements. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers in smart washing machine motor control boards from back-EMF spikes generated by BLDC motor commutation. IC Role / Device Role / Timing Role: Localized TVS across H-bridge high-side FET source-drain terminals and MCU reset line. Use Value: Responds in <1 ns to clamp 100 V+ inductive spikes, preventing latch-up or permanent damage to 5 V logic circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24AHM3_B/H | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification; same SMB package and pinout. | 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; no design or layout changes needed. |
| SMCJ24AHE3_A/H | Higher-power 1500 W version in larger SMC (DO-214AB) package; same VWM/VBR/VC but higher IPPM (33.6 A) and RθJA = 50 °C/W. | Used where sustained surge energy exceeds 600 W capability or where thermal dissipation demands lower junction-to-ambient resistance. | Select when system-level surge testing requires >600 W margin or board layout allows larger footprint; not drop-in due to package size difference. |
Compared with SMBJ24AHE3_B/H, the HM3 variant offers identical protection performance with halogen-free construction, while the SMCJ24AHE3_A/H provides higher surge capacity at the cost of increased PCB area and different thermal management requirements.
Availability
SMBJ24AHE3_B/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom power feeding, and consumer appliance motor drive designs requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for SMBJ24AHE3_B/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, power efficiency, and automotive-grade validation.
The SMBJ series is engineered specifically for board-level transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where compact size, high surge tolerance, and qualification rigor are mandatory.
FAQ
What is the clamping voltage of SMBJ24AHE3_B/H at its rated peak pulse current?
The SMBJ24AHE3_B/H has a maximum clamping voltage (VC) of 38.9 V at its rated peak pulse current (IPPM) of 15.4 A, measured under the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is critical for ensuring compatibility with downstream 30 V or 40 V-rated components. The SMBJ24AHE3_B/H maintains this clamping performance across its full operating temperature range.
Is SMBJ24AHE3_B/H qualified for automotive applications?
Yes, SMBJ24AHE3_B/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in the SMBJ5.0A–SMBJ188A datasheet (Document Number: 88392, Revision: 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, making SMBJ24AHE3_B/H suitable for use in automotive body electronics, power distribution modules, and ADAS subsystems where field reliability is essential.
What is the package type and mounting compatibility of SMBJ24AHE3_B/H?
SMBJ24AHE3_B/H uses the SMB (DO-214AA) surface-mount package-a low-profile, rectangular case with gull-wing leads optimized for automated placement and reflow soldering. It conforms to JEDEC standards and supports standard SMT processes including lead-free reflow (MSL Level 1, peak 260 °C). The SMBJ24AHE3_B/H mounts on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for optimal thermal and surge performance, and is compatible with industry-standard 7" tape-and-reel delivery (package code H, base quantity 750).
How does SMBJ24AHE3_B/H differ from bidirectional TVS diodes like SMBJ24CA?
SMBJ24AHE3_B/H is unidirectional and features a cathode band for polarity-sensitive placement, clamping only positive transients relative to ground. In contrast, SMBJ24CA is bidirectional with no polarity marking and clamps both positive and negative excursions symmetrically. The SMBJ24AHE3_B/H exhibits lower leakage at VWM (1.0 µA max vs. 1.0 µA for SMBJ24CA) and is preferred for DC power rail protection, whereas SMBJ24CA suits AC-coupled or floating signal lines. Both share identical VWM, VBR, and PPPM ratings.
What are the thermal limitations of SMBJ24AHE3_B/H in continuous operation?
SMBJ24AHE3_B/H has a maximum power dissipation (PD) of 5.0 W on an infinite heatsink at TA = 50 °C, with a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W. Its absolute maximum junction temperature is +150 °C, and it operates safely from −55 °C to +150 °C. For sustained DC stress, designers must ensure average power remains well below PD and verify PCB copper area meets Vishay's recommended 0.2" × 0.2" pad layout to avoid thermal runaway during repetitive transients.
SMBJ24AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 15.4A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ24AHE3_B/H FAQ
1.How can I place an order for SMBJ24AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ24AHE3_B/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 SMBJ24AHE3_B/H reliable?
The price and inventory of SMBJ24AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ24AHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ24AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ24AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ24AHE3_B/H?
SMBJ24AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ24AHE3_B/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 SMBJ24AHE3_B/H?
For technical support, including SMBJ24AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ24AHE3_B/H requirements.
6.How does Aetrix verify that SMBJ24AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ24AHE3_B/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 SMBJ24AHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ24AHE3_B/H?
All SMBJ24AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ24AHE3_B/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 SMBJ24AHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ24AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ24AHE3_B/H Tags
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