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Vishay General Semiconductor - Diodes Division SMBG24HE3/5B
- Part No.:
- SMBG24HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG24HE3/5B.pdf
- Description:
- TVS DIODE 24VWM 43VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,769
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Product details
Overview
SMBG24HE3/5B from Vishay General Semiconductor is a uni-directional transient voltage suppressor (TVS) diode in the SMBG package, designed for robust overvoltage protection of sensitive electronics. It features a 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 38.9 V clamping voltage (VC) at 15.4 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform. It is AEC-Q101 qualified and used to protect MOSFETs and signal lines in automotive power systems.
For engineers reviewing the SMBG24HE3/5B datasheet, SMBG24HE3/5B pinout, SMBG24HE3/5B application, or SMBG24HE3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-215AA package dimensions, clamping performance under surge conditions, and direct alternatives for automotive-grade TVS selection.
Technical Context
The SMBG24HE3/5B operates as a uni-directional avalanche diode, leveraging glass-passivated junction technology for stable breakdown behavior and low incremental surge resistance. Its thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature.
It responds to transients with sub-nanosecond speed and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The device is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits ≤1.0 µA reverse leakage at 24 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Ensures predictable avalanche initiation across production lot |
| VC @ IPPM | 38.9 V at 15.4 A - Limits downstream voltage stress during 600 W transient events |
| PPPM | 600 W - Sustains standardized 10/1000 µs surge without failure under derated conditions |
| IFSM | 100 A - Withstands single 8.3 ms half-sine surge common in automotive load-dump scenarios |
| TJ max | +150 °C - Supports under-hood deployment in automotive ECUs and power modules |
| AEC-Q101 | Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing configuration with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path in uni-directional clamp configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 24 V rail or signal input); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling |
| 600 W peak pulse power (10/1000 µs) | Protects against ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surges in 24 V systems |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow assembly without preconditioning or baking |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response) |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in engine control units against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Uni-directional TVS clamp placed between battery rail and DC-DC converter input. Use Value: Clamps transients to ≤38.9 V, preventing damage to downstream 40 V-rated regulators and microcontrollers. |
Use Scenario: Shielding digital input channels of programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Front-end protection element on optocoupler or Schmitt-trigger input stage. Use Value: Absorbs 600 W surges while maintaining <1 µA leakage at 24 V nominal, preserving signal integrity. |
| Automotive Sensor Interface | Telecom Power Supply Input |
Use Scenario: Safeguarding CAN transceiver power pins and bias networks in vehicle sensor nodes. IC Role / Device Role / Timing Role: Localized rail clamp adjacent to transceiver IC, mounted on minimal copper pads. Use Value: Delivers 15.4 A peak pulse current handling with 38.9 V clamping, meeting ISO 16750-2 requirements. |
Use Scenario: Secondary-side overvoltage protection on 24 V telecom power supplies exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Final-stage TVS on output rail before connector interface. Use Value: Provides repeatable 600 W surge absorption with AEC-Q101 proven robustness for outdoor cabinet deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24AHE3/5B | Same VWM (24 V), identical DO-214AB package; lower PPPM (400 W vs. 600 W) | Limited to lower-energy transients; not rated for full automotive load dump compliance | Select when board space allows larger footprint and surge energy is constrained to <400 W |
| SMCJ24AHE3/5B | Same VWM and VC, but DO-214AB package with higher thermal mass; PPPM = 1500 W | Overqualified for 600 W needs; requires larger PCB area and higher mounting pad thermal mass | Choose only if system-level testing demands >1 kW surge margin or extended thermal endurance |
Compared with SMBJ24AHE3/5B and SMCJ24AHE3/5B, the SMBG24HE3/5B uniquely balances 600 W surge capability, AEC-Q101 qualification, and compact DO-215AA footprint-making it optimal for space-constrained automotive modules requiring certified 24 V rail protection.
Availability
SMBG24HE3/5B is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, and sensor interface circuits requiring stable component supply with AEC-Q101 assurance and RoHS-compliant sourcing.
Supply support for SMBG24HE3/5B 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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive environments.
The SMBG series was engineered specifically for AEC-Q101-compliant transient suppression in compact surface-mount formats, targeting 12 V and 24 V automotive subsystems where thermal efficiency and surge robustness are critical.
FAQ
What is the clamping voltage of SMBG24HE3/5B at its rated peak pulse current?
The SMBG24HE3/5B has a maximum clamping voltage (VC) of 38.9 V at 15.4 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value ensures protected circuitry remains below critical voltage thresholds during surge events. The SMBG24HE3/5B maintains this clamping performance across its qualified temperature range and after repeated stress cycles.
Is SMBG24HE3/5B suitable for automotive applications?
Yes, SMBG24HE3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and validation against temperature cycling, HTRB, and ESD make it appropriate for engine control units, body electronics, and ADAS power domains. The SMBG24HE3/5B meets ISO 7637-2 and ISO 16750-2 surge immunity requirements when properly applied.
What does the "HE3" suffix indicate in SMBG24HE3/5B?
The "HE3" suffix in SMBG24HE3/5B denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes the part from commercial-grade "E3" variants and confirms compliance with automotive reliability standards. The SMBG24HE3/5B also features matte tin-plated leads and UL 94 V-0 molding compound, as specified in Vishay document 88456.
How does SMBG24HE3/5B differ from bi-directional TVS diodes like SMBG24CA?
The SMBG24HE3/5B is uni-directional and intended for DC rail protection where polarity is fixed, offering lower leakage and optimized forward surge rating (100 A). In contrast, SMBG24CA is bi-directional and suited for AC or floating signal lines, with symmetrical clamping in both directions but no IFSM rating. The SMBG24HE3/5B's cathode band marking and absence of bidirectional symmetry reflect this functional distinction.
What is the thermal resistance of SMBG24HE3/5B, and how does it affect layout design?
The SMBG24HE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. These values require adherence to Vishay's recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal for rated power dissipation. Deviating from this layout reduces surge capability and risks thermal runaway during repetitive transients. The SMBG24HE3/5B's DO-215AA footprint enables efficient heat transfer when used with proper copper pour.
SMBG24HE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 14A
- 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 (SMBG)
SMBG24HE3/5B FAQ
1.How can I place an order for SMBG24HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG24HE3/5B 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 SMBG24HE3/5B reliable?
The price and inventory of SMBG24HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG24HE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG24HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG24HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG24HE3/5B?
SMBG24HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG24HE3/5B 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 SMBG24HE3/5B?
For technical support, including SMBG24HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG24HE3/5B requirements.
6.How does Aetrix verify that SMBG24HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG24HE3/5B 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 SMBG24HE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG24HE3/5B?
All SMBG24HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG24HE3/5B, 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 SMBG24HE3/5B part is unused and in its original packaging.
Return procedure for SMBG24HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG24HE3/5B Tags
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