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Vishay General Semiconductor - Diodes Division SM6T30AHM3_A/I
- Part No.:
- SM6T30AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30AHM3_A/I.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,388
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Product details
Overview
SM6T30AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMB (DO-214AA) package, with 30 V standoff voltage (VWM = 25.6 V), 31.5 V minimum breakdown voltage (VBR), 41.5 V maximum clamping voltage at 14.5 A (10/1000 μs), 600 W peak pulse power rating, and AEC-Q101 qualification for automotive electronics protection.
For engineers reviewing the SM6T30AHM3_A/I datasheet, SM6T30AHM3_A/I pinout, SM6T30AHM3_A/I application, or SM6T30AHM3_A/I equivalent, key selection criteria include clamping performance under 10/1000 μs transients, unidirectional polarity with cathode band marking, halogen-free RoHS-compliant construction, and suitability for IFSM-sensitive circuits requiring 100 A surge capability.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to suppress fast-rising voltage transients. Its design targets transient energy absorption per IEC 61000-4-5 (10/1000 μs waveform) while maintaining low dynamic impedance and minimal parasitic inductance due to SMB package geometry.
Rated for operation from –65 °C to +150 °C junction temperature, it features a thermal resistance of 100 °C/W (junction-to-ambient, on 5.0 mm × 5.0 mm copper pads) and 20 °C/W (junction-to-lead), enabling reliable performance in thermally constrained automotive PCB layouts without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 25.6 V - Maximum reverse operating voltage before clamping begins; defines safe signal line bias margin |
| VBR (min) | 28.5 V - Minimum breakdown voltage at 1.0 mA test current; ensures consistent turn-on threshold |
| VC @ IPPM | 41.5 V at 14.5 A (10/1000 μs) - Clamping voltage during worst-case surge; determines protected IC's voltage stress limit |
| PPPM | 600 W - Peak pulse power handling per standard 10/1000 μs waveform; supports high-energy ESD/lightning surges |
| IFSM | 100 A - Non-repetitive forward surge current (10 ms half-sine); enables robustness against inductive switch-off events |
| TJ max. | +150 °C - Maximum junction temperature; allows deployment in under-hood automotive environments |
| Package | SMB (DO-214AA) - Surface-mount outline with 2.20 mm height and 5.59 mm body length; compatible with automated reflow assembly |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when V > VBR |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping loop with minimal inductance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per JESD22 standards |
| Halogen-free & RoHS-compliant | Meets JEDEC JESD201 Class 2 whisker resistance and global environmental compliance requirements |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage exposure to downstream ICs compared to higher-ratio TVS devices |
| Low inductance SMB package | Reduces voltage overshoot during fast transients (<1 ns rise time), critical for CAN/LIN bus protection |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs (e.g., body control modules) from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground to shunt surge energy before reaching PMIC or MCU input. Use Value: Withstands 100 A IFSM and clamps to ≤41.5 V, ensuring downstream 36 V-rated regulators remain within safe operating area. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation systems exposed to relay coil switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector entry point to suppress 10/1000 μs inductive spikes on 0–5 V signal lines. Use Value: 41.5 V clamping voltage prevents latch-up in 5 V ADC front-ends while maintaining signal integrity via SMB's low-inductance layout. |
| Automotive Lighting Driver Protection | Telecom DC Power Input Protection |
Use Scenario: Shielding LED driver ICs in headlamp modules from reverse-polarity connection and PWM-induced voltage spikes. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-LED supply rail to clamp both forward and reverse transients. Use Value: AEC-Q101 qualification ensures survival across -40 °C to +125 °C ambient, and 150 °C TJ rating accommodates localized heating near heat sinks. | Use Scenario: Guarding 48 V DC input stages of PoE-powered network switches against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS placed upstream of DC-DC converter to absorb bulk surge energy before regulation stage. Use Value: 600 W PPPM rating handles multi-kA induced currents per IEC 61000-4-5; SMB footprint enables dense placement near input connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same VWM (25.6 V), identical SMB package, but lower PPPM (400 W) and higher VC (48.4 V at 12.3 A) | Limited to lower-energy transients; unsuitable for automotive load dump per ISO 7637-2 Pulse 5a | Select only if system-level surge testing confirms <400 W requirement and 48.4 V clamping is acceptable for protected ICs |
| SMCJ30A | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VWM/VBR/VC specs | Requires PCB redesign due to 7.11 mm body length vs. SMB's 4.57 mm; adds thermal mass but increases board space | Choose when surge threat exceeds 600 W and layout allows larger footprint; not drop-in compatible |
Compared with SMAJ30A and SMCJ30A, SM6T30AHM3_A/I delivers optimal balance of automotive-grade reliability, compact SMB form factor, and verified 600 W surge capacity-making it preferred for space-constrained, AEC-Q101–mandated designs where clamping voltage and thermal performance are critical.
Availability
SM6T30AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, lighting driver protection, and telecom DC input protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM6T30AHM3_A/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, MOSFETs, and protection devices with emphasis on high-reliability, automotive-qualified components.
The SM6T Series is engineered specifically for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, precise clamping, and surface-mount manufacturability are mandatory.
FAQ
What is the clamping voltage of SM6T30AHM3_A/I under a 10/1000 μs surge?
The SM6T30AHM3_A/I has a maximum clamping voltage (VC) of 41.5 V at 14.5 A under the standardized 10/1000 μs double-exponential waveform. This value is measured per Figure 1 in Vishay Document 88385 and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance is guaranteed across the full operating temperature range and forms the basis for downstream IC voltage stress analysis.
Is SM6T30AHM3_A/I suitable for automotive applications?
Yes, SM6T30AHM3_A/I is AEC-Q101 qualified and explicitly designated for automotive use with the "HM3" suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It meets stringent requirements for temperature cycling, mechanical shock, and humidity resistance, and is validated for under-hood environments with junction temperatures up to +150 °C. The part is referenced in Vishay's ordering table for automotive applications.
What does the "_A/I" suffix mean in SM6T30AHM3_A/I?
The "_A/I" suffix in SM6T30AHM3_A/I denotes the revision code and packaging configuration: "A" indicates the first revision of the HM3 variant, and "I" specifies delivery in 13-inch diameter plastic tape and reel (3200 units per reel), per Vishay's ordering information table. This suffix does not affect electrical specifications but identifies manufacturing batch and logistics format for traceability.
How does SM6T30AHM3_A/I differ from the non-automotive SM6T30A-E3 variant?
SM6T30AHM3_A/I differs from SM6T30A-E3 in three key ways: it carries AEC-Q101 qualification (not present in E3), uses halogen-free molding compound (E3 is RoHS-compliant but not halogen-free), and is screened to automotive reliability standards including extended temperature life testing. Electrically, both share identical VWM, VBR, VC, and PPPM ratings, but HM3 guarantees performance stability across automotive duty cycles.
What is the thermal resistance of SM6T30AHM3_A/I, and how does it impact PCB layout?
SM6T30AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, and 20 °C/W junction-to-lead (RθJL). This means effective heat dissipation requires adherence to Vishay's recommended pad layout-undersized pads increase RθJA and risk exceeding +150 °C junction temperature during repeated surges. Layout must follow the mounting pad dimensions shown in Figure 4 of Document 88385.
SM6T30AHM3_A/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:
- Obsolete
- 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:
- -
- 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_A/I FAQ
1.How can I place an order for SM6T30AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30AHM3_A/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 SM6T30AHM3_A/I reliable?
The price and inventory of SM6T30AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T30AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SM6T30AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30AHM3_A/I?
SM6T30AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30AHM3_A/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 SM6T30AHM3_A/I?
For technical support, including SM6T30AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30AHM3_A/I requirements.
6.How does Aetrix verify that SM6T30AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T30AHM3_A/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 SM6T30AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SM6T30AHM3_A/I?
All SM6T30AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30AHM3_A/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 SM6T30AHM3_A/I part is unused and in its original packaging.
Return procedure for SM6T30AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T30AHM3_A/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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