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Vishay General Semiconductor - Diodes Division SM6T24AHM3/H
- Part No.:
- SM6T24AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T24AHM3/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,381
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Product details
Overview
SM6T24AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMB (DO-214AA) package, with 24 V standoff voltage (VWM = 20.5 V), 22.8–25.2 V breakdown voltage (VBR), 33.2 V clamping voltage at 18 A (VC), 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive electronics protection.
For engineers reviewing the SM6T24AHM3/H datasheet, SM6T24AHM3/H pinout, SM6T24AHM3/H application, or SM6T24AHM3/H equivalent, this page delivers verified electrical parameters, automotive-grade reliability data, SMB package mechanical details, and real-world use cases in sensor line and MOSFET gate protection against inductive switching transients.
Technical Context
The SM6T24AHM3/H operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 22.8–25.2 V breakdown threshold under 1 mA test current. It clamps transient surges to ≤33.2 V at 18 A peak pulse current (10/1000 μs), limiting energy dissipation to 600 W while maintaining low junction-to-lead thermal resistance (20 °C/W).
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements and features halogen-free, RoHS-compliant construction with matte tin-plated leads solderable per J-STD-002. Its glass-passivated junction ensures stable leakage (<1 μA at 20.5 V) and low inductance for fast response to ESD and load-dump events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 22.8 V / 25.2 V - Breakdown occurs within this range at 1 mA, defining turn-on precision |
| VC @ IPPM | 33.2 V at 18 A - Clamped voltage during 10/1000 μs surge, directly limiting downstream IC stress |
| PPPM | 600 W - Peak transient power handling capability, enabling robust protection against ISO 7637-2 pulses |
| ID @ VWM | <1 μA - Ultra-low leakage preserves signal integrity in high-impedance sensor interfaces |
| TJ max. | +150 °C - Junction temperature limit supporting under-hood automotive deployment |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band on unidirectional devices. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to circuit ground or lower-potential node; defines reference for clamping action |
| Cathode | Reverse voltage input / Clamping output | Connected to protected line (e.g., sensor supply); conducts during overvoltage to shunt current to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor modules |
| 600 W peak pulse power (10/1000 μs) | Withstands severe load-dump transients per ISO 16750-2 without degradation |
| Low clamping ratio (VC/VBR ≈ 1.34) | Minimizes overvoltage margin between breakdown and clamping, enhancing system-level protection margin |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive environmental compliance requirements and JESD201 Class 2 whisker resistance |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine bays exposed to alternator load dumps and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor VOUT and ground to clamp transients before they reach ADC inputs or signal conditioning ICs. Use Value: Limits voltage excursion to ≤33.2 V during 10/1000 μs surges, preventing latch-up or permanent damage to 3.3 V/5 V sensor interface ICs. | Use Scenario: Safeguarding digital input pins of PLC I/O modules connected to 24 V DC control signals driving solenoids and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS on each input channel absorbs inductive kickback from field devices without affecting steady-state logic levels. Use Value: Maintains <1 μA leakage at 20.5 V, ensuring clean high-Z detection while clamping 18 A surges to protect microcontroller GPIOs. |
| Automotive Body Control Module (BCM) | Telecom Power Interface |
Use Scenario: Input protection for LIN bus transceivers and window lift motor drivers subject to battery reverse connection and jump-start spikes. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on 12 V supply rail feeding BCM sub-circuits. Use Value: Withstands 100 A non-repetitive forward surge (IFSM), enabling survival during accidental polarity reversal events. | Use Scenario: Secondary protection stage after primary MOVs on 48 V telecom power feeds powering remote radio units. IC Role / Device Role / Timing Role: Fast-response clamping device suppressing residual high-frequency ringing and ESD not filtered by bulk components. Use Value: Low inductance and 20 °C/W junction-to-lead thermal resistance enable rapid heat transfer during repetitive 8/20 μs lightning surges (VC = 42.8 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Same VWM (20.5 V), identical SMB package, but lower PPPM (400 W) and higher VC (38.9 V) | Limited to less severe transients; unsuitable for ISO 7637-2 Pulse 5a load-dump simulation | Select SM6T24AHM3/H when 600 W surge rating and automotive qualification are mandatory |
| SMCJ24A | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VBR range but 10% higher VC (36.4 V) | Requires PCB area increase (~30% larger footprint); better for industrial 100 V surge immunity | Choose SM6T24AHM3/H where space-constrained automotive PCBs demand SMB form factor and AEC-Q101 compliance |
Compared with SMAJ24A and SMCJ24A, SM6T24AHM3/H uniquely balances AEC-Q101 qualification, 600 W surge capacity, and SMB footprint-making it optimal for space-limited automotive ECUs requiring validated reliability without layout redesign.
Availability
SM6T24AHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive inputs, and body control module (BCM) designs requiring stable component supply, halogen-free compliance, and AEC-Q101 traceability.
Supply support for SM6T24AHM3/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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SM6T Series is engineered for high-energy transient suppression in automotive, industrial, and telecom systems-delivering AEC-Q101-qualified, halogen-free TVS diodes in compact SMB packages optimized for automated SMT assembly and under-hood thermal environments.
FAQ
What is the clamping voltage of SM6T24AHM3/H at its rated peak pulse current?
The SM6T24AHM3/H has a maximum clamping voltage (VC) of 33.2 V at 18 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The clamping performance is guaranteed across the full operating temperature range and supports reliable protection of 24 V nominal systems without overstressing downstream ICs.
Is SM6T24AHM3/H qualified for automotive applications?
Yes, SM6T24AHM3/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation revision 09-Jan-2024 (Document Number: 88385). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, making SM6T24AHM3/H suitable for engine control units, ADAS sensors, and body electronics deployed in vehicles.
What does the "HM3" suffix indicate in SM6T24AHM3/H?
The "HM3" suffix in SM6T24AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade "E3" or "M3" versions and confirms compliance with automotive environmental and reliability standards-including JESD201 Class 2 whisker resistance and MSL Level 1 reflow capability up to 260 °C.
What is the maximum reverse leakage current of SM6T24AHM3/H at its standoff voltage?
The SM6T24AHM3/H exhibits a maximum reverse leakage current (ID) of 1 μA at its 20.5 V standoff voltage (VWM), measured at TA = 25 °C. This ultra-low leakage ensures minimal power loss and signal distortion in high-impedance applications such as sensor bias networks and LIN bus termination, preserving accuracy and stability in precision analog circuits.
Can SM6T24AHM3/H be used in bidirectional configurations?
No, SM6T24AHM3/H is a unidirectional TVS diode, as indicated by its "A" suffix and cathode band marking. Bidirectional variants require the "CA" suffix (e.g., SM6T24CA). Using SM6T24AHM3/H in bidirectional signal paths would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit.
SM6T24AHM3/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:
- Discontinued at Digi-Key
- 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 (SMB)
SM6T24AHM3/H FAQ
1.How can I place an order for SM6T24AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T24AHM3/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 SM6T24AHM3/H reliable?
The price and inventory of SM6T24AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T24AHM3/H is usually 5 days.
3.What payment methods are accepted for SM6T24AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T24AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T24AHM3/H?
SM6T24AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T24AHM3/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 SM6T24AHM3/H?
For technical support, including SM6T24AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T24AHM3/H requirements.
6.How does Aetrix verify that SM6T24AHM3/H is sourced from the original manufacturer or authorized distributors?
All SM6T24AHM3/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 SM6T24AHM3/H meets industry standards.
7.What is the process for return or replacement of SM6T24AHM3/H?
All SM6T24AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T24AHM3/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 SM6T24AHM3/H part is unused and in its original packaging.
Return procedure for SM6T24AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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