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Vishay General Semiconductor - Diodes Division SM6T24AHE3_A/H
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- Part No.:
- SM6T24AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T24AHE3_A/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,219
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Product details
Overview
SM6T24AHE3_A/H 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/H datasheet, SM6T24AHE3_A/H pinout, SM6T24AHE3_A/H application, or SM6T24AHE3_A/H 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 RoHS-compliant, halogen-free AEC-Q101 qualified construction.
Technical Context
This TVS diode operates as a fast-acting overvoltage protection device using an avalanche breakdown mechanism. Its glass-passivated junction ensures stable breakdown behavior and low leakage (≤1.0 μA at 20.5 V), while the low-inductance SMB package supports effective suppression of fast-rising transients up to 10/1000 μs waveform.
The device is rated for continuous operation from –65 °C to +150 °C junction temperature, with derated peak pulse power above 25 °C ambient. It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive electronics, requiring no additional conformal coating for standard mounting on 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum reverse voltage before significant conduction; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 22.8–25.2 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients |
| VC (Clamping Voltage) | 33.2 V at 18 A (10/1000 μs) - Limits downstream voltage stress during 600 W surge events |
| PPPM (Peak Pulse Power) | 600 W - Sustains standardized lightning/surge immunity test waveforms without failure |
| TJ max. | +150 °C - Enables placement near heat-generating components in engine control or ADAS modules |
| RθJA | 100 °C/W - Predicts junction temperature rise under 5.0 W steady-state dissipation on standard PCB pads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by a single band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to protected line's lower-potential side (e.g., ground or return path) |
| Cathode | Avalanche conduction terminal / Clamping node | Connected to protected line's higher-potential side (e.g., supply rail or signal line); marked with band |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity testing without degradation |
| AEC-Q101 qualification | Validated for automotive powertrain, body control, and infotainment systems requiring zero-failure reliability |
| Glass passivated junction | Ensures stable VBR over lifetime and prevents parameter drift under humidity or thermal cycling |
| Low inductance SMB package | Minimizes voltage overshoot during sub-100 ns transient edges in CAN/LIN bus protection |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking or special handling |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp surges above 33.2 V. Use Value: Prevents damage to MCU power inputs and analog front-ends during ISO 7637-2 Pulse 5a events. | Use Scenario: Shielding 4–20 mA current loop sensors from ESD and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: TVS connected across sensor output terminals to limit transient voltage to ≤33.2 V. Use Value: Maintains signal integrity and avoids false triggering in PLC analog input modules. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeding Protection |
Use Scenario: Safeguarding AC/DC adapter primary-side rectifier outputs from line surges and capacitor discharge spikes. IC Role / Device Role / Timing Role: Unidirectional clamping device placed after bridge rectifier and before bulk capacitor. Use Value: Absorbs 600 W energy pulses without thermal runaway, extending adapter MTBF. | Use Scenario: Protecting PoE-powered devices (e.g., IP cameras) from DC feed transients induced by cable coupling or hot-swap events. IC Role / Device Role / Timing Role: TVS installed across DC input rails (48 V nominal) to clamp surges to 33.2 V. Use Value: Enables compliance with IEEE 802.3af/bt surge immunity requirements without derating. |
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-E3/5B | Same SMB package, 24 V VWM, but 400 W PPPM (vs. 600 W); RθJA = 110 °C/W | Limited to lower-energy transients (IEC 61000-4-5 Level 3); not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification or 600 W surge headroom |
| 1.5SMC24A | Higher-power SMC package (1500 W PPPM), same VWM/VBR/VC specs; larger footprint (7.11 × 6.22 mm vs. 4.57 × 3.94 mm) | Used where board space permits and higher surge margin is required (e.g., industrial motor drives) | Select when system-level surge testing exceeds 600 W or thermal budget allows larger package |
Compared with SMAJ24A-E3/5B and 1.5SMC24A, SM6T24AHE3_A/H delivers optimal balance of AEC-Q101 compliance, 600 W surge capability, and compact SMB footprint-making it preferred for space-constrained automotive and industrial modules where both qualification and robustness are mandatory.
Availability
SM6T24AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, consumer power adapters, and telecom DC feeding circuits requiring stable component supply and long-term lifecycle support.
Supply support for SM6T24AHE3_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, 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 consistent clamping response and AEC-Q101 validation are critical.
FAQ
What is the clamping voltage of SM6T24AHE3_A/H under a 10/1000 μs surge?
The SM6T24AHE3_A/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 JEDEC standards and guarantees that downstream circuitry remains below this voltage during standardized surge events, directly supporting IEC 61000-4-5 compliance testing for the SM6T24AHE3_A/H.
Is SM6T24AHE3_A/H qualified for automotive applications?
Yes, SM6T24AHE3_A/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's official SM6T series datasheet (Rev. 09-Jan-2024, Doc. #88385). This qualification validates the SM6T24AHE3_A/H for use in automotive powertrain, chassis, and body electronics where reliability under thermal cycling, humidity, and mechanical shock is mandatory.
What does the "HE3" suffix indicate in SM6T24AHE3_A/H?
The "HE3" suffix in SM6T24AHE3_A/H denotes RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering nomenclature, "HE3" identifies the part as halogen-free, lead-free, and automotive-grade-distinct from commercial "E3" or "M3" variants. This makes SM6T24AHE3_A/H suitable for automotive production without additional qualification effort.
What is the thermal resistance of SM6T24AHE3_A/H, and how does it affect layout?
The SM6T24AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value assumes standard SMB pad layout; reducing pad area increases RθJA and risks exceeding the +150 °C max junction temperature during sustained 5.0 W dissipation-so SM6T24AHE3_A/H layout must follow Vishay's recommended footprint.
How is polarity identified on SM6T24AHE3_A/H?
SM6T24AHE3_A/H is a unidirectional TVS diode with polarity marked by a single cathode band at one end of the SMB package body. The banded end is the cathode and must be connected toward the higher-potential side of the protected line (e.g., VCC or signal line), while the unbanded end is the anode, connected toward ground or return. This polarity is essential for correct clamping operation of the SM6T24AHE3_A/H.
SM6T24AHE3_A/H 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/H FAQ
1.How can I place an order for SM6T24AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T24AHE3_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 SM6T24AHE3_A/H reliable?
The price and inventory of SM6T24AHE3_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 SM6T24AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T24AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T24AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T24AHE3_A/H?
SM6T24AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T24AHE3_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 SM6T24AHE3_A/H?
For technical support, including SM6T24AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T24AHE3_A/H requirements.
6.How does Aetrix verify that SM6T24AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T24AHE3_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 SM6T24AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T24AHE3_A/H?
All SM6T24AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T24AHE3_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 SM6T24AHE3_A/H part is unused and in its original packaging.
Return procedure for SM6T24AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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