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Vishay General Semiconductor - Diodes Division SM6T30CAHM3_B/H
- Part No.:
- SM6T30CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30CAHM3_B/H.pdf
- Description:
- 600W,30V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,266
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Product details
Overview
SM6T30CAHM3_B/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 30 V standoff voltage (VWM), 33.2 V minimum breakdown voltage (VBR), and 600 W peak pulse power (10/1000 μs). It clamps transients to ≤48.3 V at 16 A IPPM and is halogen-free, RoHS-compliant, and AEC-Q101 qualified for automotive use.
For engineers reviewing the SM6T30CAHM3_B/H datasheet, SM6T30CAHM3_B/H pinout, SM6T30CAHM3_B/H application, or SM6T30CAHM3_B/H equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under 16 A surge, AEC-Q101 qualification status, SMB package thermal performance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The SM6T30CAHM3_B/H operates as a bidirectional voltage-clamping device using an avalanche junction structure, with symmetrical forward/reverse breakdown behavior. Its glass-passivated chip junction ensures stable leakage (<1 μA at 25.6 V) and robust ESD immunity up to ±30 kV (HBM).
Designed for transient suppression in automotive signal lines and power rails, it delivers 600 W peak pulse power per 10/1000 μs waveform while maintaining low inductance and meeting MSL Level 1 (260 °C reflow peak). The device exhibits no polarity marking due to bidirectional symmetry and supports operation from −65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 25.6 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min | 33.2 V - Minimum breakdown voltage at 1.0 mA test current, ensuring reliable turn-on margin |
| VC @ IPPM | 48.3 V - Clamped voltage at 16 A peak pulse current (10/1000 μs), defining worst-case overvoltage exposure |
| PPPM | 600 W - Peak pulse power handling capacity, enabling protection against IEC 61000-4-5 Level 4 surges |
| TJ max | +150 °C - Maximum junction temperature, supporting under-hood automotive deployment |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads, guiding PCB thermal design |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated leads solderable per J-STD-002/JESD 22-B102. No polarity marking - bidirectional symmetry eliminates cathode/anode distinction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as input/output for transient energy; symmetric conduction enables placement without orientation check |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; differential clamping occurs across both terminals regardless of surge polarity |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables compliance with IEC 61000-4-5 surge immunity requirements up to 4 kV (line-earth) in automotive ECUs |
| AEC-Q101 qualification (HM3 suffix) | Validates reliability for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on protected ICs such as CAN transceivers and microcontrollers during fast transients |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without moisture-related popcorn failure risk |
| Glass passivated junction | Ensures stable leakage current (<1 μA at VWM) and long-term parameter stability under thermal cycling |
Applications
| Automotive Sensor Protection | CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine compartments exposed to load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across sensor supply and ground, shunting transients before they reach precision amplifier inputs. Use Value: Limits voltage excursion to ≤48.3 V during 16 A surges, preserving sensor accuracy and preventing latch-up in downstream ADCs. |
Use Scenario: Safeguarding high-speed CAN FD transceivers (e.g., TCAN1042) against ESD and coupled noise on differential bus lines. IC Role / Device Role / Timing Role: Low-inductance TVS connected between CAN_H and CAN_L, providing symmetrical clamping without disrupting signal integrity. Use Value: Maintains <100 ps response time and <1 pF junction capacitance, avoiding bit error rate degradation at 5 Mbps CAN FD data rates. |
| Industrial PLC I/O Protection | Automotive Infotainment Power Rail |
Use Scenario: Shielding 24 V digital input modules in programmable logic controllers from inductive switching spikes generated by solenoid valves and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted directly at connector entry point, diverting >600 W surge energy to chassis ground. Use Value: Withstands repeated 10/1000 μs transients up to 16 A without parameter drift, ensuring >10-year field reliability. |
Use Scenario: Suppressing load-dump transients (up to 60 V, 200 ms) on 12 V power rails feeding head unit processors and display drivers. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of DC/DC converters, limiting rail voltage to safe levels during alternator regulation failure. Use Value: AEC-Q101 qualification and +150 °C TJ rating ensure uninterrupted operation during sustained under-hood thermal stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33CA | Lower PPPM (400 W), higher VC (53.3 V at 12.3 A), SMA package (larger RθJA = 140 °C/W) | Not AEC-Q101 qualified; suitable for commercial-grade industrial controls but not automotive front-end circuits | Select when cost sensitivity outweighs automotive qualification and surge margin requirements |
| 1.5KE33CA | Higher power (1500 W), axial-leaded DO-201 package, slower response due to higher parasitic inductance | Requires through-hole mounting; incompatible with high-density SMT layouts and automated assembly lines | Choose only for legacy designs with existing through-hole infrastructure and where board space permits larger footprint |
Compared with SMAJ33CA and 1.5KE33CA, SM6T30CAHM3_B/H provides superior automotive qualification, tighter clamping (48.3 V vs. 53.3 V/69.4 V), and optimized SMT manufacturability - making it the preferred choice for new AEC-Q101-compliant designs requiring compact, high-reliability transient suppression.
Availability
SM6T30CAHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, CAN bus systems, industrial PLC I/O modules, and infotainment power rail protection requiring stable component supply and full traceability.
Supply support for SM6T30CAHM3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The SM6T Series is engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, low clamping voltage, and AEC-Q101 compliance are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T30CAHM3_B/H?
The "CA" suffix in SM6T30CAHM3_B/H denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., SM6T30A), SM6T30CAHM3_B/H has no cathode marking and clamps equally for positive and negative surges - essential for protecting differential signal lines like CAN or RS-485 without polarity concerns.
Is SM6T30CAHM3_B/H suitable for IEC 61000-4-5 surge testing?
Yes, SM6T30CAHM3_B/H is validated for IEC 61000-4-5 compliance due to its 600 W peak pulse power rating with 10/1000 μs waveform and clamping voltage of 48.3 V at 16 A. When mounted on 5.0 mm × 5.0 mm copper pads per Vishay's recommended layout, it reliably limits surge-induced overvoltage to levels compatible with Level 4 (4 kV line-earth) testing in industrial and automotive equipment.
How does the HM3 suffix differ from E3 or M3 in SM6T30CAHM3_B/H?
The "HM3" suffix in SM6T30CAHM3_B/H indicates halogen-free, RoHS-compliant construction with full AEC-Q101 qualification - distinguishing it from "E3" (RoHS-compliant commercial grade) and "M3" (halogen-free commercial grade). HM3 devices undergo extended stress testing including temperature cycling, high-temperature reverse bias, and unbiased highly accelerated stress testing to meet automotive reliability standards.
What is the maximum operating temperature for SM6T30CAHM3_B/H?
The maximum junction temperature (TJ max) for SM6T30CAHM3_B/H is +150 °C, verified per AEC-Q101 test conditions. This allows deployment in under-hood automotive locations and industrial enclosures where ambient temperatures exceed 105 °C - provided PCB thermal design maintains junction temperature within limit using the specified 0.2" × 0.2" copper pad layout and accounts for RθJA = 100 °C/W.
Does SM6T30CAHM3_B/H require orientation during PCB placement?
No, SM6T30CAHM3_B/H does not require orientation during PCB placement because it is a bidirectional TVS diode with symmetrical electrical characteristics. The SMB package lacks polarity markings, and both terminals function identically as either anode or cathode depending on transient polarity - simplifying automated pick-and-place and eliminating orientation-related assembly errors.
SM6T30CAHM3_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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.5V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- 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)
SM6T30CAHM3_B/H FAQ
1.How can I place an order for SM6T30CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30CAHM3_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 SM6T30CAHM3_B/H reliable?
The price and inventory of SM6T30CAHM3_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 SM6T30CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T30CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30CAHM3_B/H?
SM6T30CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30CAHM3_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 SM6T30CAHM3_B/H?
For technical support, including SM6T30CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30CAHM3_B/H requirements.
6.How does Aetrix verify that SM6T30CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T30CAHM3_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 SM6T30CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T30CAHM3_B/H?
All SM6T30CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30CAHM3_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 SM6T30CAHM3_B/H part is unused and in its original packaging.
Return procedure for SM6T30CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T30CAHM3_B/H Tags
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