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Vishay General Semiconductor - Diodes Division SM6T30AHM3_B/H
- Part No.:
- SM6T30AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30AHM3_B/H.pdf
- Description:
- 600W,30V,5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,701
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Product details
Overview
SM6T30AHM3_B/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 30 V standoff voltage (VWM), 33.2 V typical breakdown voltage (VBR), 41.5 V maximum clamping voltage at 14.5 A IPPM, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SM6T30AHM3_B/H datasheet, SM6T30AHM3_B/H pinout, SM6T30AHM3_B/H application, or SM6T30AHM3_B/H equivalent, key selection criteria include clamping performance under 10/1000 μs surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity with cathode band marking, halogen-free RoHS compliance, and suitability for automotive-grade ESD/surge protection in engine control units and ADAS sensor interfaces.
Technical Context
The SM6T30AHM3_B/H operates as a unidirectional avalanche diode with glass-passivated junction, delivering precise clamping during fast-rising transients. Its 10/1000 μs waveform rating supports IEC 61000-4-5 Level 3–4 surge immunity, and its low inductance enables effective suppression of high-frequency spikes induced by inductive load switching.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it achieves 5.0 W steady-state power dissipation at TA = 50 °C and withstands 100 A non-repetitive forward surge (10 ms half-sine). Junction temperature range spans −65 °C to +150 °C, supporting operation in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 25.6 V - Maximum reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 28.5 V / 31.5 V at IT = 1.0 mA - Ensures predictable avalanche onset across manufacturing lot and temperature. |
| VC @ IPPM | 41.5 V at 14.5 A (10/1000 μs) - Clamping voltage limits downstream IC stress during standardized surge events. |
| PPPM | 600 W - Peak transient energy absorption capability per IEC 61000-4-5; determines survivability against lightning-induced surges. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; informs PCB pad layout and derating above 25 °C ambient. |
| TJ max. | +150 °C - Maximum junction temperature; enables reliable operation in high-temperature automotive locations. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Cathode marked with band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected line ground or low-side reference. | Provides low-impedance path to ground during transient clamping; must be routed with minimal trace inductance. |
| Cathode | Current exit point in forward bias; marked with band; connects to protected circuit node. | Defines clamping polarity-reverse-biased during overvoltage; placement determines protection directionality. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 surge events without degradation across rated lifetime. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including powertrain and ADAS; includes temperature cycling, HTRB, and ESD testing. |
| Glass passivated chip junction | Improves long-term reliability and moisture resistance versus epoxy-passivated alternatives; critical for under-hood use. |
| Low inductance SMB package | Minimizes voltage overshoot during fast transients (<1 ns rise time); preserves clamping effectiveness at high dv/dt. |
| MSL Level 1 (260 °C reflow) | Supports standard lead-free SMT assembly without preconditioning; eliminates moisture-related popcorning risk. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between 12 V supply rail and ground. Use Value: Limits voltage excursion to ≤41.5 V during 14.5 A surge, preventing latch-up or permanent damage to 3.3 V/5 V logic ICs. |
Use Scenario: Shields 24 V digital input optocoupler circuits from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-clamp protector on input terminal block, upstream of series current-limiting resistor. Use Value: Absorbs 600 W transient energy without failure, maintaining >10⁵ surge cycles per MIL-STD-883H Method 3015.7. |
| Automotive Camera Sensor Interface | Telecom Base Station Power Supply |
Use Scenario: Guards MIPI CSI-2 data lines and 1.8 V bias rails in rear-view camera modules exposed to ESD and cable discharge. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on power rail adjacent to image sensor IC. Use Value: Delivers <1 μA leakage at 25.6 V VWM, preserving signal integrity while clamping to 41.5 V during 8/20 μs EFT bursts. |
Use Scenario: Protects 48 V DC-DC converter input stage from lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on bulk input rail, coordinated with MOV and gas discharge tube staging. Use Value: Provides precise 25.6 V clamping threshold and 600 W pulse rating to reduce MOV stress and extend system MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/5B | Same SMB package, 30 V VWM, but lower PPPM (400 W) and higher VC (48.4 V at 12.3 A). | Lacks AEC-Q101 qualification; suitable for commercial/industrial only. | Select when cost sensitivity outweighs automotive qualification and higher clamping voltage is acceptable. |
| SMCJ30A-QH | Higher PPPM (1500 W), same VWM (25.6 V), but larger SMC (DO-214AB) package and higher RθJA (35 °C/W). | Requires larger PCB area; better for high-energy surges but less space-constrained than SMB. | Choose when system-level surge test requires >600 W capability and board space permits SMC footprint. |
Compared with SMAJ30A-E3/5B and SMCJ30A-QH, the SM6T30AHM3_B/H delivers certified automotive reliability in the smallest footprint, balancing clamping precision, surge margin, and manufacturability for high-volume automotive electronics.
Availability
SM6T30AHM3_B/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, ADAS camera modules, and telecom power supplies requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SM6T30AHM3_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 high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where consistent clamping performance and qualification rigor are mandatory.
FAQ
What is the clamping voltage of SM6T30AHM3_B/H under a 10/1000 μs surge?
The SM6T30AHM3_B/H has a maximum clamping voltage (VC) of 41.5 V when subjected to a 10/1000 μs waveform at 14.5 A peak pulse current. This value is measured per Figure 1 in Vishay Document 88385 and ensures downstream components remain within safe operating voltage limits during standardized surge events.
Is SM6T30AHM3_B/H qualified for automotive applications?
Yes, SM6T30AHM3_B/H carries the HM3 suffix, indicating halogen-free, RoHS-compliant construction and full AEC-Q101 qualification. It undergoes rigorous stress testing-including temperature cycling, high-temperature reverse bias, and ESD-to meet automotive reliability requirements for engine control, body electronics, and ADAS subsystems.
What does the "B/H" in SM6T30AHM3_B/H ordering code signify?
The "B/H" suffix in SM6T30AHM3_B/H denotes packaging configuration: "B" indicates tape-and-reel delivery per JEDEC standards, and "H" specifies a 7-inch diameter reel containing 750 units. This format ensures compatibility with high-speed pick-and-place equipment and supports automated SMT assembly lines.
How does SM6T30AHM3_B/H differ from bidirectional variants like SM6T30CA?
SM6T30AHM3_B/H is unidirectional with cathode band marking and specified for single-polarity clamping (anode-to-ground), whereas SM6T30CA is bidirectional with symmetrical breakdown in both directions and no polarity marking. The SM6T30AHM3_B/H offers tighter leakage control below VWM and is preferred for DC power rail protection.
What is the thermal resistance and maximum junction temperature of SM6T30AHM3_B/H?
The SM6T30AHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads, and a maximum junction temperature (TJ max.) of +150 °C. These values define its safe operating envelope under continuous power dissipation and transient overload conditions.
SM6T30AHM3_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:
- 1
- Bidirectional Channels:
- -
- 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)
SM6T30AHM3_B/H FAQ
1.How can I place an order for SM6T30AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30AHM3_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 SM6T30AHM3_B/H reliable?
The price and inventory of SM6T30AHM3_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 SM6T30AHM3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T30AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30AHM3_B/H?
SM6T30AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30AHM3_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 SM6T30AHM3_B/H?
For technical support, including SM6T30AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30AHM3_B/H requirements.
6.How does Aetrix verify that SM6T30AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T30AHM3_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 SM6T30AHM3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T30AHM3_B/H?
All SM6T30AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30AHM3_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 SM6T30AHM3_B/H part is unused and in its original packaging.
Return procedure for SM6T30AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T30AHM3_B/H Tags
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