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Vishay General Semiconductor - Diodes Division SM6T24AHE3_B/H
- Part No.:
- SM6T24AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T24AHE3_B/H.pdf
- Description:
- 600W,24V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,222
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Product details
Overview
SM6T24AHE3_B/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, with 24 V standoff voltage (VWM = 20.5 V), 22.8–25.2 V breakdown (VBR), 33.2 V clamping voltage at 18 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform. It protects MOSFETs and ICs against inductive switching transients in automotive power supplies.
For engineers reviewing the SM6T24AHE3_B/H datasheet, SM6T24AHE3_B/H pinout, SM6T24AHE3_B/H application, or SM6T24AHE3_B/H equivalent, key selection criteria include clamping voltage margin relative to protected device's absolute maximum rating, junction temperature derating above 25 °C, AEC-Q101 qualification status, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device, conducting only during reverse overvoltage events while remaining high-impedance under normal bias. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at 20.5 V).
The device delivers 600 W peak pulse power handling with low clamping ratio (VC/VBR ≈ 1.37) and thermal resistance of 100 °C/W (junction-to-ambient), enabling robust surge protection in space-constrained SMB footprint without external heatsinking for short-duration transients.
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 - Confirmed breakdown range ensuring reliable turn-on during surges |
| VC @ IPPM | 33.2 V at 18 A (10/1000 μs) - Clamping voltage limiting stress on downstream ICs or MOSFETs |
| PPPM | 600 W - Peak transient energy absorption capability compliant with IEC 61000-4-5 Level 4 |
| TJ max | +150 °C - Maximum junction temperature supporting operation in under-hood automotive environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling and HTRB |
| RθJA | 100 °C/W - Thermal resistance defining self-heating under sustained power dissipation |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V supply rail); conducts during overvoltage to shunt current to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over time and temperature, minimizing parameter drift in automotive life cycles |
| Low inductance SMB package | Reduces voltage overshoot during fast transients (e.g., ISO 7637-2 pulse 1/2a), improving clamping fidelity |
| MSL Level 1 (260 °C) | Enables standard reflow assembly without moisture sensitivity concerns or baking requirements |
| AEC-Q101 qualified variant | Validated for automotive applications requiring zero defects and extended temperature operation (-65 °C to +150 °C) |
| 600 W peak pulse rating | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive power inputs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump and alternator transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between 24 V rail and chassis ground. Use Value: Limits transient voltage to ≤33.2 V, preserving integrity of 36 V-rated DC-DC controllers and microcontrollers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules. IC Role / Device Role / Timing Role: Reverse-biased clamping element on signal lines exposed to field wiring inductive coupling. Use Value: Suppresses 1 kV/500 A surges (10/1000 μs) without degrading signal integrity due to low junction capacitance (~100 pF at 0 V). |
| Consumer Appliance Motor Drive Protection | Telecom Power Supply Input Protection |
Use Scenario: Shielding H-bridge gate drivers in washing machine motor control boards from back-EMF spikes. IC Role / Device Role / Timing Role: Localized TVS across VDD and GND pins of half-bridge drivers. Use Value: Absorbs 600 W pulses within 1 ms, preventing latch-up or oxide rupture in logic-level MOSFETs. | Use Scenario: Front-end surge suppression on 48 V telecom rectifier outputs feeding PoE injectors. IC Role / Device Role / Timing Role: Primary clamping stage before secondary TVS arrays and filter capacitors. Use Value: Provides first-line defense with 20.5 V standoff, allowing staged protection architecture with higher-voltage secondary devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/57 | Same SMB package, 24 V VWM, but 400 W PPPM rating and higher VC (38.9 V @ 10.3 A) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification or peak power margin |
| 1.5SMC24A | Higher-power SMC package (1500 W), same VWM and VBR, but larger footprint and higher RθJA (50 °C/W) | Requires PCB area increase; suited for systems needing >600 W headroom | Choose when legacy designs mandate SMC or surge levels exceed 600 W capability |
Compared with SMAJ24A-E3/57 and 1.5SMC24A, SM6T24AHE3_B/H offers optimal balance of AEC-Q101 compliance, 600 W surge capacity, and compact SMB footprint-making it preferred for new automotive and space-constrained industrial designs where qualification and size are critical.
Availability
SM6T24AHE3_B/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, consumer appliance motor drives, and telecom power supply inputs requiring stable component supply and full traceability.
Supply support for SM6T24AHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, low clamping voltage, and automated assembly compatibility are mandatory.
FAQ
What is the clamping voltage of SM6T24AHE3_B/H under a 10/1000 μs surge?
The SM6T24AHE3_B/H has a maximum clamping voltage (VC) of 33.2 V when subjected to an 18 A peak pulse current with a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88385 and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is SM6T24AHE3_B/H qualified for automotive use?
Yes, SM6T24AHE3_B/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's SM6T series datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and accelerated life testing required for under-hood and chassis-mounted automotive electronics.
What is the package type and mounting specification for SM6T24AHE3_B/H?
SM6T24AHE3_B/H uses the SMB (DO-214AA) surface-mount package with matte tin-plated leads. It is rated MSL Level 1 and compatible with standard Pb-free reflow profiles up to 260 °C peak. Recommended pad layout is 0.2" × 0.2" (5.0 mm × 5.0 mm) copper per terminal for thermal and mechanical reliability.
How does SM6T24AHE3_B/H differ from bidirectional variants like SM6T24CA?
SM6T24AHE3_B/H is unidirectional and features a cathode band marking; it conducts only during reverse overvoltage. In contrast, SM6T24CA is bidirectional with no polarity marking and clamps symmetrically in both directions. The unidirectional version offers lower leakage and tighter VBR tolerance, making SM6T24AHE3_B/H preferable for DC power rail protection.
What is the maximum junction temperature and thermal resistance of SM6T24AHE3_B/H?
The SM6T24AHE3_B/H has a maximum junction temperature (TJ) of +150 °C and a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads. These values define safe operating limits under continuous power dissipation and require derating above 25 °C ambient per Figure 2 in the datasheet.
SM6T24AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T24AHE3_B/H FAQ
1.How can I place an order for SM6T24AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T24AHE3_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 SM6T24AHE3_B/H reliable?
The price and inventory of SM6T24AHE3_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 SM6T24AHE3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T24AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T24AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T24AHE3_B/H?
SM6T24AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T24AHE3_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 SM6T24AHE3_B/H?
For technical support, including SM6T24AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T24AHE3_B/H requirements.
6.How does Aetrix verify that SM6T24AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T24AHE3_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 SM6T24AHE3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T24AHE3_B/H?
All SM6T24AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T24AHE3_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 SM6T24AHE3_B/H part is unused and in its original packaging.
Return procedure for SM6T24AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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