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Vishay General Semiconductor - Diodes Division SM6T30CAHE3_B/H
- Part No.:
- SM6T30CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30CAHE3_B/H.pdf
- Description:
- 600W,30V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,605
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Product details
Overview
SM6T30CAHE3_B/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 30 V standoff voltage (VWM), 33.2 V minimum breakdown voltage (VBR), 600 W peak pulse power (10/1000 μs), and 57.0 V maximum clamping voltage at 14.5 A IPPM - used to protect automotive sensor interfaces, industrial I/O ports, and telecom line drivers.
For engineers reviewing the SM6T30CAHE3_B/H datasheet, SM6T30CAHE3_B/H pinout, SM6T30CAHE3_B/H application, or SM6T30CAHE3_B/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C junction temperature rating, low-inductance SMB package, and compliance with JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable leakage performance and robust surge handling under repetitive transient stress.
The device delivers consistent clamping behavior across -65 °C to +150 °C operating range, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W, supporting reliable operation on standard PCB copper pads (0.2" × 0.2") without heatsinking in most automotive and industrial applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (min) | 33.2 V - guaranteed breakdown starts no lower than this, ensuring precise overvoltage threshold |
| VC @ IPPM | 57.0 V at 14.5 A - clamping voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 600 W - peak transient power absorption capacity per single event |
| TJ max | +150 °C - enables use in under-hood automotive environments and high-temperature industrial enclosures |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated placement and reflow soldering |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, 260 °C lead-free reflow compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Not applicable - bidirectional device has no polarity marking | No functional cathode/anode distinction; terminals are electrically symmetric for AC transient suppression |
| Anode (unmarked end) | Not applicable - bidirectional device has no polarity marking | Both terminals serve identical roles; clamping occurs equally regardless of voltage polarity |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses (e.g., RS-485), and ungrounded sensor outputs without polarity constraints |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 50 Ω source impedance lines |
| AEC-Q101 qualification | Validated for automotive electronics including engine control modules, ADAS sensors, and body control units |
| Low inductance SMB package | Minimizes voltage overshoot during fast transients (<1 ns rise time), critical for protecting high-speed interfaces |
| Glass passivated junction | Ensures stable leakage current (<1 μA at VWM) and long-term reliability under thermal cycling and humidity stress |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point to shunt surge energy before it reaches protected ICs. Use Value: Prevents latch-up or permanent damage to automotive-grade microcontrollers and analog front-ends during ISO 7637-2 Pulse 5a events. | Use Scenario: Safeguarding programmable logic controller (PLC) digital input channels exposed to field wiring in factory automation systems. IC Role / Device Role / Timing Role: Standoff-clamp TVS deployed across input terminals to absorb 1 kV/500 A lightning-induced surges per IEC 61000-4-5. Use Value: Maintains system uptime by preventing false triggering or destruction of optocoupler input stages during electrical storms or motor switching. |
| Telecom Line Driver Protection | Consumer USB/Display Interface Protection |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station backhaul equipment from induced surges on long-distance cabling. IC Role / Device Role / Timing Role: Symmetrical clamping device mounted adjacent to connector to limit common-mode transients before differential receiver inputs. Use Value: Ensures data integrity and prevents communication lockup during EFT bursts (IEC 61000-4-4) and surge coupling from nearby power lines. | Use Scenario: Protecting HDMI, USB 2.0, or DisplayPort signal pairs in smart TVs and set-top boxes from ESD events during user handling or cable insertion. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed inline with differential signal traces to clamp ±8 kV contact ESD (IEC 61000-4-2) without signal distortion. Use Value: Preserves signal integrity up to 480 Mbps while meeting consumer electronics ESD immunity requirements without added filtering complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33CA | Same SMB package, 33 V VWM, 36.7 V VBR min, 53.3 V VC @ 11.3 A - slightly higher clamping voltage but lower IPPM rating | Lower peak pulse current capability (11.3 A vs. 14.5 A); less margin for high-energy surges | Select when cost sensitivity outweighs need for maximum surge headroom in non-automotive applications |
| SMCJ33CA | Larger SMC (DO-214AB) package, same 33 V VWM, 36.7 V VBR min, but 53.3 V VC @ 33.0 A - higher IPPM and PPPM (1500 W) | Requires larger PCB area and different thermal layout; suited for primary-level surge protection rather than board-level IC protection | Choose for front-end mains or interface protection where space allows and higher energy handling is required |
Compared with SMAJ33CA and SMCJ33CA, the SM6T30CAHE3_B/H offers optimal balance of AEC-Q101 qualification, compact SMB footprint, and 14.5 A surge current handling - making it preferred for space-constrained automotive and industrial PCBs requiring certified reliability without over-engineering.
Availability
SM6T30CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line driver circuits requiring stable component supply and long-term lifecycle support.
Supply support for SM6T30CAHE3_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 application-specific optimization.
The SM6T Series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, low clamping voltage, and repeatable surge performance are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T30CAHE3_B/H?
The "CA" suffix in SM6T30CAHE3_B/H denotes a bidirectional configuration, meaning the device provides symmetrical clamping in both positive and negative voltage directions. This eliminates polarity concerns during PCB layout and supports protection of AC-coupled or differential signal paths - unlike unidirectional variants (e.g., SM6T30A) that require correct cathode orientation. The SM6T30CAHE3_B/H is functionally identical to SM6T30CA but carries AEC-Q101 qualification and specific tape-and-reel packaging.
Is SM6T30CAHE3_B/H RoHS-compliant and halogen-free?
Yes, SM6T30CAHE3_B/H is RoHS-compliant per EU Directive 2011/65/EU and meets Vishay's halogen-free definition (≤900 ppm bromine, ≤900 ppm chlorine, total ≤1500 ppm halogens). The "HE3" suffix confirms RoHS compliance and AEC-Q101 qualification, while the "_B/H" denotes 7" tape-and-reel packaging with 750-unit quantity. Material compliance documentation is available upon request from Aetrix Electronics.
What is the maximum clamping voltage of SM6T30CAHE3_B/H under surge conditions?
The maximum clamping voltage (VC) of SM6T30CAHE3_B/H is 57.0 V at 14.5 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case transient events. At lower currents (e.g., 1 A), clamping voltage drops to approximately 45 V - enabling effective protection of 3.3 V, 5 V, and 12 V logic and interface ICs without overstressing their absolute maximum ratings.
How does the AEC-Q101 qualification impact SM6T30CAHE3_B/H usage in automotive designs?
The AEC-Q101 qualification of SM6T30CAHE3_B/H validates its suitability for automotive electronic systems through rigorous testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD. This certification permits direct use in engine control units, ADAS sensors, and infotainment interfaces without additional qualification effort. Designers can rely on its specified parameters - such as 150 °C TJ max and stable leakage <1 μA - across full automotive temperature ranges (-40 °C to +125 °C ambient).
Can SM6T30CAHE3_B/H replace SM6T30A in an existing design?
No - SM6T30CAHE3_B/H cannot directly replace SM6T30A because they differ in polarity configuration: SM6T30A is unidirectional (cathode-marked), while SM6T30CAHE3_B/H is bidirectional (no polarity marking). Substitution would require verifying that the circuit does not depend on DC blocking or forward conduction behavior. If bidirectional clamping is acceptable and layout allows, SM6T30CAHE3_B/H may be used - but electrical validation of clamping symmetry and leakage under both polarities is required before deployment.
SM6T30CAHE3_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)
SM6T30CAHE3_B/H FAQ
1.How can I place an order for SM6T30CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30CAHE3_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 SM6T30CAHE3_B/H reliable?
The price and inventory of SM6T30CAHE3_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 SM6T30CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T30CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30CAHE3_B/H?
SM6T30CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30CAHE3_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 SM6T30CAHE3_B/H?
For technical support, including SM6T30CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30CAHE3_B/H requirements.
6.How does Aetrix verify that SM6T30CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T30CAHE3_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 SM6T30CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T30CAHE3_B/H?
All SM6T30CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30CAHE3_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 SM6T30CAHE3_B/H part is unused and in its original packaging.
Return procedure for SM6T30CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T30CAHE3_B/H Tags
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