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Vishay General Semiconductor - Diodes Division SM6T24A-M3/52
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- Part No.:
- SM6T24A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T24A-M3/52.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,159
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Product details
Overview
SM6T24A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 600 W peak pulse power (10/1000 μs), 24 V breakdown voltage (VBR = 22.8–25.2 V at 1.0 mA), 33.2 V maximum clamping voltage at 18.0 A, and 1.0 μA max reverse leakage at 20.5 V stand-off voltage. It protects MOSFETs and sensor signal lines in automotive ECUs against inductive switching transients.
For engineers reviewing the SM6T24A-M3/52 datasheet, SM6T24A-M3/52 pinout, SM6T24A-M3/52 application, or SM6T24A-M3/52 equivalent, key selection criteria include clamping voltage vs. IPPM, VWM/VBR margin for system operating voltage, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, and halogen-free RoHS compliance per M3 suffix.
Technical Context
The SM6T24A-M3/52 operates as a unidirectional avalanche diode with cathode-banded polarity, designed to clamp transient overvoltages before they damage downstream ICs or power switches. Its glass-passivated junction ensures stable breakdown and low leakage, while low-inductance SMB packaging supports fast response to sub-microsecond transients.
It delivers 600 W peak pulse power under standardized 10/1000 μs waveform conditions when mounted on 5.0 mm × 5.0 mm copper pads, with thermal derating above TA = 25 °C per Fig. 2 and maximum junction temperature of 150 °C. The M3 suffix confirms halogen-free, RoHS-compliant construction meeting JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1.0 mA - defines reliable avalanche initiation range for 24 V nominal systems |
| VWM | 20.5 V - maximum continuous reverse voltage before significant leakage begins |
| VC @ IPPM | 33.2 V at 18.0 A (10/1000 μs) - clamping voltage seen by protected circuit during worst-case surge |
| ID @ VWM | ≤1.0 μA - ensures negligible standby current draw in battery-powered or low-power sensor nodes |
| PPPM | 600 W - peak transient energy absorption capability under standard lightning/surge test waveform |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, critical for sustained power dissipation in enclosed enclosures |
| TJ max | +150 °C - maximum allowable junction temperature, enabling operation in under-hood automotive environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode (unmarked end) | Reference/ground return | Typically tied to system ground or low-impedance return path for clamping loop integrity |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges without derating in standard PCB layouts |
| Low clamping ratio (VC/VBR ≈ 1.34) | Minimizes overvoltage stress on downstream 24 V-rated components such as CAN transceivers or motor drivers |
| MSL Level 1, LF peak 260 °C | Supports lead-free reflow assembly without moisture-induced popcorning or delamination |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills automotive OEM material declarations (IMDS, CAMDS) and environmental compliance requirements |
| 150 °C max junction temperature | Validates use in engine control modules, transmission controllers, and other high-ambient-temperature automotive zones |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 24 V supply inputs and LIN bus lines in diesel ECU modules exposed to alternator load dump and solenoid coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp transients before reaching MCU power pins and LIN transceiver. Use Value: Limits clamped voltage to 33.2 V, staying within absolute maximum rating of 36 V for typical 24 V automotive MCUs and LIN PHYs. | Use Scenario: Shielding analog output lines (4–20 mA) of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Transient suppressor on sensor output trace, referenced to system ground, absorbing ESD and relay-switching noise. Use Value: Sub-1 μA leakage at 20.5 V ensures no measurable error in precision current-loop outputs under normal operation. |
| Automotive Body Control Module (BCM) | Telecom Power Supply Input Protection |
Use Scenario: Safeguarding window lift motor driver outputs in BCMs subjected to inductive kickback during direction reversal. IC Role / Device Role / Timing Role: TVS placed across H-bridge output terminals to clamp bidirectional flyback energy into ground plane. Use Value: 600 W rating handles repetitive 100 A inductive spikes without degradation; SMB footprint fits tight board spacing near gate drivers. | Use Scenario: Front-end protection for 24 V DC input of telecom remote radio units installed on cell towers. IC Role / Device Role / Timing Role: Primary surge suppression device on DC input before DC/DC converter, shunting lightning-induced surges to earth ground. Use Value: 33.2 V clamping ensures downstream converters with 36 V input rating remain within safe operating area during 10/1000 μs surges. |
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 | Same SMB package, but lower 400 W PPPM; VBR = 26.7–29.5 V; VC = 38.9 V @ 10.3 A | Less robust for high-energy automotive load dump; higher clamping voltage reduces margin for 24 V systems | Select SMAJ24A only if system-level surge testing confirms 400 W sufficiency and layout allows higher VC |
| 1.5SMC24A | Larger SMC (DO-214AB) package; same 600 W rating; VBR = 25.1–27.7 V; VC = 38.9 V @ 15.4 A | Higher thermal mass improves sustained surge handling but requires larger PCB area; not drop-in compatible | Choose 1.5SMC24A when board space permits and enhanced thermal performance is required for repeated surge events |
Compared with SMAJ24A and 1.5SMC24A, the SM6T24A-M3/52 offers optimal balance of 600 W surge capacity, low 33.2 V clamping, SMB footprint, and halogen-free AEC-Q101-ready construction-making it preferred for space-constrained, high-reliability 24 V automotive and industrial designs.
Availability
SM6T24A-M3/52 is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor interfaces, and telecom power supply inputs requiring stable component supply, halogen-free compliance, and AEC-Q101 readiness.
Supply support for SM6T24A-M3/52 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, power efficiency, and automotive-grade qualification.
The SM6T Series is engineered specifically for transient overvoltage protection in harsh environments-including automotive, industrial, and telecom-delivering consistent clamping performance, low leakage, and robust surge handling in compact SMB packages.
FAQ
What is the breakdown voltage tolerance of SM6T24A-M3/52?
The SM6T24A-M3/52 has a specified breakdown voltage range of 22.8 V to 25.2 V at 1.0 mA test current, representing ±5% tolerance around the nominal 24 V rating. This tight VBR spread ensures predictable clamping onset across production lots and supports accurate system-level overvoltage margining for 24 V rails.
Is SM6T24A-M3/52 qualified to AEC-Q101?
No-SM6T24A-M3/52 carries the M3 suffix indicating halogen-free, RoHS-compliant commercial grade construction. For AEC-Q101 qualification, the correct part is SM6T24AHM3_X (e.g., SM6T24AHM3_A), which adds the HM3 suffix and revision code. The M3-only version is not automotive-qualified.
What does the "/52" in SM6T24A-M3/52 indicate?
The "/52" denotes the preferred packaging configuration: 750 units per 7-inch diameter plastic tape-and-reel. This format is optimized for high-speed automated SMT placement. Alternate packaging includes "/5B" for 3200 units on 13-inch reels, both using the same M3 halogen-free material specification.
How does SM6T24A-M3/52 compare to bidirectional variants like SM6T24CA?
The SM6T24A-M3/52 is unidirectional and features a cathode band; SM6T24CA is bidirectional with no polarity marking and symmetric clamping in both directions. Use SM6T24A-M3/52 for DC power rail protection where polarity is fixed; choose SM6T24CA only for AC-coupled or floating signal line protection requiring symmetrical transient suppression.
What is the maximum reverse leakage current for SM6T24A-M3/52 at 25 °C?
At 25 °C and rated stand-off voltage (VWM = 20.5 V), the SM6T24A-M3/52 exhibits a maximum reverse leakage current of 1.0 μA. This ultra-low leakage preserves battery life in always-on automotive modules and avoids loading errors in precision analog sensor circuits.
SM6T24A-M3/52 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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T24A-M3/52 FAQ
1.How can I place an order for SM6T24A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T24A-M3/52 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 SM6T24A-M3/52 reliable?
The price and inventory of SM6T24A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T24A-M3/52 is usually 5 days.
3.What payment methods are accepted for SM6T24A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T24A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T24A-M3/52?
SM6T24A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T24A-M3/52 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 SM6T24A-M3/52?
For technical support, including SM6T24A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T24A-M3/52 requirements.
6.How does Aetrix verify that SM6T24A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T24A-M3/52 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 SM6T24A-M3/52 meets industry standards.
7.What is the process for return or replacement of SM6T24A-M3/52?
All SM6T24A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T24A-M3/52, 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 SM6T24A-M3/52 part is unused and in its original packaging.
Return procedure for SM6T24A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T24A-M3/52 Tags
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