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Vishay General Semiconductor - Diodes Division SM6T24AHE3_A/I
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- Part No.:
- SM6T24AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T24AHE3_A/I.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,196
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Product details
Overview
SM6T24AHE3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 24 V standoff voltage (VWM = 20.5 V), 33.2 V maximum clamping voltage at 18 A peak pulse current (10/1000 μs), 600 W peak pulse power rating, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SM6T24AHE3_A/I datasheet, SM6T24AHE3_A/I pinout, SM6T24AHE3_A/I application, or SM6T24AHE3_A/I equivalent, key selection criteria include clamping performance under 10/1000 μs surge, unidirectional polarity with cathode band marking, thermal resistance (RθJA = 100 °C/W), and compliance with automotive reliability standards.
Technical Context
The SM6T24AHE3_A/I operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its breakdown threshold (VBR min = 22.8 V, max = 25.2 V at 1 mA). Its low-inductance SMB package enables fast response to ESD and lightning-induced transients, with clamping action limiting downstream voltage to ≤33.2 V during 18 A surges.
Thermally, it supports operation from –65 °C to +150 °C junction temperature, derates linearly above 25 °C ambient, and delivers 5.0 W steady-state power dissipation on infinite heatsink at 50 °C. The device meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 22.8 V / 25.2 V at 1 mA - Ensures reliable turn-on within defined tolerance band |
| VC @ IPPM | 33.2 V at 18 A (10/1000 μs) - Limits protected circuit voltage during standard surge event |
| PPPM | 600 W - Sustains high-energy transients without failure per IEC 61000-4-5 waveform |
| TJ max. | +150 °C - Enables deployment in under-hood automotive environments |
| RθJA | 100 °C/W - Defines thermal rise under natural convection; requires PCB copper pad area per spec |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to ground or low-impedance reference in unidirectional TVS configuration |
| Cathode | Clamping node / Surge sink | Connected to line being protected; conducts avalanche current when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy surges common in automotive load-dump and inductive switching events |
| Glass passivated chip junction | Enhances long-term reliability and stability of breakdown voltage under thermal cycling |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, ISO 10605) |
| MSL Level 1, LF peak 260 °C | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp overvoltage before reaching downstream regulators and microcontrollers. Use Value: Clamps to ≤33.2 V at 18 A, ensuring input voltage stays below absolute maximum ratings of 36 V-rated DC/DC converters. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from EFT and surge coupling in factory automation systems. IC Role / Device Role / Timing Role: TVS mounted across sensor output and return, absorbing fast transients while preserving signal integrity up to 20 kHz bandwidth. Use Value: Low clamping voltage and <100 ps response time prevent latch-up or damage to precision op-amps and ADC front-ends. |
| Consumer Device USB Port Protection | Telecom Base Station DC Feed Protection |
Use Scenario: Safeguarding USB VBUS and D+/D− lines in portable chargers and docking stations against hot-plug and ESD events. IC Role / Device Role / Timing Role: Discrete unidirectional TVS on VBUS rail, coordinated with bidirectional TVS on data lines for full interface protection. Use Value: 20.5 V VWM allows safe operation across full USB 2.0/3.0 VBUS range (4.75–5.5 V nominal, up to 5.8 V); 33.2 V VC prevents overvoltage on USB switch ICs. | Use Scenario: Protecting remote radio head (RRH) power inputs fed via PoE-like 48 V DC distribution from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device on 48 V supply rail upstream of DC/DC converters and bias circuits. Use Value: 600 W PPPM rating handles multi-kA induced surges; AEC-Q101 qualification ensures robustness in harsh environmental deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/5B | Same SMB package, 24 V VWM, but lower PPPM (400 W), higher RθJA (140 °C/W), no AEC-Q101 qualification | Targeted at commercial-grade industrial and consumer applications; not validated for automotive temperature cycling or humidity testing | Select when cost sensitivity outweighs automotive qualification and higher surge margin |
| 1.5SMC24A | Larger SMC (DO-214AB) package, same 24 V VWM, 1500 W PPPM, higher IFSM (200 A), RθJA = 60 °C/W | Used where higher surge endurance or improved thermal performance is required, e.g., telecom power entry or railway systems | Select when system-level surge tests exceed IEC 61000-4-5 Level 4 or require >600 W margin |
Compared with SMAJ24A-E3/5B and 1.5SMC24A, the SM6T24AHE3_A/I provides optimal balance of automotive qualification, compact SMB footprint, and 600 W surge capability-making it preferred for space-constrained automotive modules where AEC-Q101 compliance is mandatory and board area is limited.
Availability
SM6T24AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power feed protection requiring stable component supply and long-term lifecycle support.
Supply support for SM6T24AHE3_A/I 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 SM6T Series was developed specifically for robust transient suppression in automotive, industrial, and communications infrastructure, combining AEC-Q101 qualification, low-clamp performance, and automated assembly compatibility.
FAQ
What is the exact standoff voltage (VWM) and breakdown voltage range for SM6T24AHE3_A/I?
The SM6T24AHE3_A/I has a standoff voltage (VWM) of 20.5 V and a breakdown voltage (VBR) range of 22.8 V to 25.2 V measured at 1 mA test current. These values are confirmed in the Vishay SM6T datasheet revision 09-Jan-2024, Table "ELECTRICAL CHARACTERISTICS", row for SM6T24A. The device is unidirectional, with cathode marked by a band on the SMB package body.
Is SM6T24AHE3_A/I qualified for automotive applications?
Yes, SM6T24AHE3_A/I is AEC-Q101 qualified, as indicated by the "HE3" suffix in the part number and explicitly stated in the Vishay SM6T datasheet under "MECHANICAL DATA" and "ORDERING INFORMATION". This qualification covers temperature cycling, humidity testing, and mechanical stress validation required for automotive under-hood and cabin electronics.
What is the maximum clamping voltage and corresponding peak pulse current for SM6T24AHE3_A/I?
The SM6T24AHE3_A/I clamps to a maximum of 33.2 V at a peak pulse current (IPPM) of 18 A under the standard 10/1000 μs waveform. This value is specified in the "ELECTRICAL CHARACTERISTICS" table of the Vishay SM6T datasheet and defines the upper voltage limit imposed on protected circuitry during surge events.
Which package type does SM6T24AHE3_A/I use, and what are its key mechanical features?
SM6T24AHE3_A/I uses the SMB (DO-214AA) package: a surface-mount, low-profile case with dimensions 4.57 mm × 3.94 mm × 2.20 mm. Key features include UL 94 V-0 rated molding compound, matte tin-plated leads compliant with J-STD-002, and MSL Level 1 rating for lead-free reflow compatibility up to 260 °C peak.
How does SM6T24AHE3_A/I differ from the non-automotive SM6T24A-E3/52 variant?
The SM6T24AHE3_A/I differs from SM6T24A-E3/52 primarily in qualification and traceability: SM6T24AHE3_A/I carries AEC-Q101 qualification, uses enhanced process controls, and includes automotive-grade lot traceability and extended reliability testing. Both share identical electrical specs and SMB packaging, but only SM6T24AHE3_A/I is approved for automotive safety-critical subsystems.
SM6T24AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 18A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T24AHE3_A/I FAQ
1.How can I place an order for SM6T24AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T24AHE3_A/I 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 SM6T24AHE3_A/I reliable?
The price and inventory of SM6T24AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T24AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM6T24AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T24AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T24AHE3_A/I?
SM6T24AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T24AHE3_A/I 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 SM6T24AHE3_A/I?
For technical support, including SM6T24AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T24AHE3_A/I requirements.
6.How does Aetrix verify that SM6T24AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T24AHE3_A/I 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 SM6T24AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM6T24AHE3_A/I?
All SM6T24AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T24AHE3_A/I, 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 SM6T24AHE3_A/I part is unused and in its original packaging.
Return procedure for SM6T24AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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