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Vishay General Semiconductor - Diodes Division SM6T24CAHE3_B/I
- Part No.:
- SM6T24CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T24CAHE3_B/I.pdf
- Description:
- 600W,24V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,065
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Product details
Overview
SM6T24CAHE3_B/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 24 V standoff voltage (VWM), 33.2 V clamping voltage (VC) at 18 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive sensor signal lines, power rails, and I/O interfaces.
For engineers reviewing the SM6T24CAHE3_B/I datasheet, SM6T24CAHE3_B/I pinout, SM6T24CAHE3_B/I application, or SM6T24CAHE3_B/I equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, low clamping ratio (VC/VWM ≈ 1.38), RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
The SM6T24CAHE3_B/I operates as a bidirectional avalanche diode, symmetrically clamping voltage transients above ±33.2 V in either polarity while maintaining ≤1.0 μA reverse leakage at 20.5 V. Its glass-passivated junction ensures stable breakdown characteristics and low inductance for fast response to sub-microsecond transients.
Designed for surface-mount use on 0.2" × 0.2" copper pads, it delivers 600 W peak pulse power handling per JEDEC JESD22-A114 (10/1000 μs) and supports operating junction temperatures from –65 °C to +150 °C, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - Maximum continuous reverse working voltage before clamping begins |
| VBR (min/max) | 22.8 V / 25.2 V - Breakdown occurs within this range at 1 mA test current, ensuring predictable turn-on |
| VC @ IPPM | 33.2 V at 18 A - Clamped voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 600 W - Peak transient energy absorption capability under standardized surge waveform |
| TJ max. | +150 °C - Maximum junction temperature, enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Package | SMB (DO-214AA) - Industry-standard 2-pin SMD outline with 5.59 mm body length and 2.20 mm height |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking; terminals are matte tin plated, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode for reverse polarity) | Transient conduction path (bidirectional) | Both terminals function identically; clamps voltage excursions above ±VBR in either direction |
| Anode (Cathode for reverse polarity) | Transient conduction path (bidirectional) | No functional distinction between pins; symmetrical avalanche structure enables dual-polarity protection |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges without derating |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, chassis, and ADAS modules requiring long-term field reliability |
| Low clamping ratio (VC/VWM = 1.38) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor supply and ground, shunting transients before they reach precision ADC inputs. Use Value: Maintains signal integrity by limiting excursion to ≤33.2 V during 10/1000 μs surges up to 18 A, preventing ADC saturation or latch-up. | Use Scenario: Safeguarding CANH/CANL differential pair against ESD events and bus faults in factory automation controllers. IC Role / Device Role / Timing Role: Paired TVS devices (one per line) referenced to common ground, providing symmetrical overvoltage clamping on both signal paths. Use Value: Preserves CAN physical layer compliance by clamping transients while maintaining <10 pF junction capacitance at zero bias, avoiding signal edge degradation. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side DC input protection for USB-C PD adapters subjected to conducted surges from upstream AC/DC stages. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between VBUS and GND, absorbing repetitive 100 ns–1 ms transients induced by transformer ringing or MOSFET switching. Use Value: Withstands ≥1000 surges at rated PPPM due to low thermal resistance (RθJL = 20 °C/W), extending adapter service life. | Use Scenario: Front-end protection for Ethernet PHYs and DSL line drivers in telecom central office equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-stage TVS mounted at board edge, clamping common-mode surges before entering isolation transformers or protection ICs. Use Value: Delivers 600 W pulse power handling with 100 °C/W RθJA, allowing operation without heatsinking in confined line card enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA | Same VWM (24 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA) | Lower surge margin; suitable only for non-automotive, low-energy transients | Select when space-constrained and surge threat level is below ISO 7637-2 Pulse 5a |
| 1.5KE24CA | Same VWM, higher PPPM (1500 W), axial DO-201 package (through-hole, manual assembly) | Not SMT-compatible; requires board real estate and assembly process change | Choose only if legacy through-hole design or extreme surge immunity (>1 kA) is required |
Compared with SMAJ24CA and 1.5KE24CA, the SM6T24CAHE3_B/I uniquely combines AEC-Q101 qualification, SMB SMT compatibility, and 600 W pulse rating-making it the optimal choice for new automotive and industrial designs requiring automated manufacturing and validated reliability.
Availability
SM6T24CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, and telecom line cards requiring stable component supply, AEC-Q101 compliance, and high-volume SMT production readiness.
Supply support for SM6T24CAHE3_B/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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SM6T Series was developed specifically for robust, surface-mount transient suppression in automotive, industrial, and communications systems where AEC-Q101 qualification, low clamping voltage, and automated assembly compatibility are mandatory.
FAQ
What is the clamping voltage of the SM6T24CAHE3_B/I under a 10/1000 μs surge?
The SM6T24CAHE3_B/I 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 JESD22-A114 and ensures predictable overvoltage limiting for protected circuitry. The SM6T24CAHE3_B/I maintains this clamping performance across its full operating temperature range (–65 °C to +150 °C).
Is the SM6T24CAHE3_B/I suitable for automotive applications?
Yes, the SM6T24CAHE3_B/I is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix. It meets rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD, making it appropriate for engine control units, ADAS sensors, and infotainment power supplies. The SM6T24CAHE3_B/I also complies with RoHS and JESD201 Class 2 whisker resistance standards.
Does the SM6T24CAHE3_B/I have polarity markings?
No, the SM6T24CAHE3_B/I is a bidirectional TVS diode and carries no polarity marking on the SMB package. Its symmetrical construction allows installation in either orientation without affecting clamping performance. This eliminates orientation errors during automated placement and simplifies PCB layout compared to unidirectional variants like SM6T24A.
What is the thermal resistance of the SM6T24CAHE3_B/I?
The SM6T24CAHE3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads, and a junction-to-lead resistance (RθJL) of 20 °C/W. These values are critical for calculating safe power dissipation limits during repetitive surge events and confirm suitability for compact, thermally constrained designs without external heatsinking.
How does the SM6T24CAHE3_B/I differ from the unidirectional SM6T24A?
The SM6T24CAHE3_B/I is bidirectional with symmetrical clamping in both polarities, while the SM6T24A is unidirectional and requires correct cathode orientation. The SM6T24CAHE3_B/I has identical VWM (20.5 V), VBR (22.8–25.2 V), and VC (33.2 V) ratings but adds AEC-Q101 qualification and RoHS-compliant matte tin terminations. Both share the same SMB package and 600 W PPPM rating.
SM6T24CAHE3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
SM6T24CAHE3_B/I FAQ
1.How can I place an order for SM6T24CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T24CAHE3_B/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 SM6T24CAHE3_B/I reliable?
The price and inventory of SM6T24CAHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T24CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T24CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T24CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T24CAHE3_B/I?
SM6T24CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T24CAHE3_B/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 SM6T24CAHE3_B/I?
For technical support, including SM6T24CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T24CAHE3_B/I requirements.
6.How does Aetrix verify that SM6T24CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T24CAHE3_B/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 SM6T24CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of SM6T24CAHE3_B/I?
All SM6T24CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T24CAHE3_B/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 SM6T24CAHE3_B/I part is unused and in its original packaging.
Return procedure for SM6T24CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T24CAHE3_B/I Tags
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