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Vishay General Semiconductor - Diodes Division SM6S30ATHE3/I
- Part No.:
- SM6S30ATHE3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AC
- Datasheet:
-
SM6S30ATHE3/I.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO218AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,830
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Product details
Overview
SM6S30ATHE3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection in high-reliability 12 V/24 V systems. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown range (VBR at 5 mA), 48.4 V clamping voltage at 95 A (10/1000 μs), 4600 W peak pulse power, and AEC-Q101 qualification for operation up to TJ = 175 °C.
For engineers reviewing the SM6S30ATHE3/I datasheet, SM6S30ATHE3/I pinout, SM6S30ATHE3/I application, or SM6S30ATHE3/I equivalent, this device is selected for high-surge, high-temperature automotive power rail protection where low leakage (<10 μA at VWM), low forward voltage drop (<1.9 V at 100 A), and DO-218AC package thermal performance are critical.
Technical Context
The SM6S30ATHE3/I employs passivated anisotropic rectifier technology optimized for junction stability under repetitive surge stress. Its DO-218AC package integrates a metal heatsink as the anode terminal, enabling direct thermal coupling to PCB copper and supporting 6 W steady-state dissipation on infinite heatsink.
It meets ISO 7637-2 load dump requirements with validated 10 ms exponential waveform capability up to 3600 W (10/10,000 μs), and complies with MSL Level 1 per J-STD-020 at 245 °C peak reflow temperature. The 0.95 °C/W junction-to-case thermal resistance ensures predictable derating across -55 °C to +175 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin in 24 V automotive systems. |
| VBR (min/typ/max) | 33.3 / 35.1 / 36.8 V at 5 mA - Tight breakdown tolerance ensures consistent turn-on behavior across production lots and temperature. |
| VC @ IPPM | 48.4 V at 95 A (10/1000 μs) - Clamping voltage limits downstream IC stress during load dump transients. |
| PPPM (10/1000 μs) | 4600 W - Peak surge handling capacity sufficient for ISO 7637-2 Pulse 5a/b worst-case load dump events. |
| TJ max | +175 °C - Enables placement near hot engine-control electronics without derating penalty. |
| RθJC | 0.95 °C/W - Confirmed thermal path from junction to case supports accurate thermal design in high-power PCB layouts. |
| Polarity | Unidirectional - Anode-connected heatsink configuration simplifies layout and grounding for negative-going transients. |
Pinout & Package
Package: DO-218AC - Surface-mount, thermally enhanced plastic package with integral metal heatsink (anode terminal); RoHS-compliant, JESD201 Class 2 whisker-tested matte tin plating; UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (cathode) | Transient current sink during clamping | Connected to protected line (e.g., battery rail); carries full surge current into heatsink/anode return path. |
| Lead 2 / metal heatsink | Anode / thermal and electrical return | Must be soldered to large copper area for thermal conduction and low-inductance ground return; electrically functions as anode terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR over lifetime and temperature, critical for AEC-Q101 reliability. |
| 175 °C junction rating | Enables direct mounting in under-hood ECUs without external thermal shielding or derating penalties. |
| Low leakage ID | <10 μA at 30 V (25 °C), <15 μA at 30 V (175 °C) - Minimizes standby power loss in always-on vehicle modules. |
| ISO 7637-2 compliance | Validated for Load Dump (Pulse 5) with 10 ms exponential waveform up to 3600 W - meets OEM-level immunity requirements. |
| MSL Level 1 | Rated for peak reflow of 245 °C - eliminates moisture sensitivity concerns during standard SMT assembly. |
Applications
| Automotive Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Protection of 12 V power input against alternator load dump transients during battery disconnection. IC Role / Device Role: Primary clamping element on main battery rail upstream of DC/DC converters and microcontrollers. Use Value: Limits transient voltage to ≤48.4 V at 95 A, preventing latch-up or damage to 40 V-rated power management ICs. |
Use Scenario: Guarding LIN bus power supply and microcontroller VDD against switching noise from solenoid drivers. IC Role / Device Role: Secondary TVS on localized 12 V distribution node feeding multiple low-power subsystems. Use Value: Low leakage (<10 μA) avoids measurable quiescent current increase in sleep-mode BCM designs. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Electric Power Steering (EPS) Control Unit |
Use Scenario: Input rail protection for image sensor and ISP power supplies exposed to harness-induced surges. IC Role / Device Role: First-line transient suppressor on fused 12 V input before EMI filter and LDO stages. Use Value: DO-218AC thermal mass and 0.95 °C/W RθJC enable sustained operation at +105 °C ambient without derating. |
Use Scenario: Safeguarding motor driver gate supplies and MCU I/O against inductive kickback from 3-phase H-bridge. IC Role / Device Role: High-energy clamping device placed at power stage input, referenced to chassis ground via heatsink. Use Value: Unidirectional configuration with anode-as-heatsink provides lowest possible clamping impedance path to ground. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM6S30AHM3 | Same VWM/VBR/VC specs; HM3 suffix indicates halogen-free, higher-reliability molding compound and tighter VBR binning. | Preferred for new designs targeting extended lifecycle or stricter material compliance (e.g., VW 80101). | Select SM6S30AHM3 when long-term supply continuity and halogen-free certification are mandatory; not drop-in due to different packaging and qualification documentation. |
| SMA6J30A | Lower PPPM (600 W vs. 4600 W), SMA package (RθJC ≈ 35 °C/W), no AEC-Q101 qualification. | Limited to non-automotive, low-energy industrial I/O protection where surge energy is <100 mJ. | Use SMA6J30A only for cost-sensitive, non-automotive applications with verified low-surge profiles; insufficient for ISO 7637-2 compliance. |
Compared with SM6S30ATHE3/I, SM6S30AHM3 offers improved material reliability and tighter parametric control but requires redesign validation, while SMA6J30A lacks the thermal robustness, surge capacity, and automotive qualification needed for under-hood deployment.
Availability
SM6S30ATHE3/I is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera power rails, and electric power steering systems requiring stable component supply amid ongoing industry transition to HM3 alternatives.
Supply support for SM6S30ATHE3/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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SM6SxxAT family was engineered specifically for AEC-Q101-compliant automotive load dump protection, emphasizing thermal stability, surge endurance, and manufacturability in high-volume SMT lines.
FAQ
What does the "HE3" suffix mean in SM6S30ATHE3/I?
The HE3 suffix in SM6S30ATHE3/I denotes RoHS-compliant construction, AEC-Q101 qualification, and JESD201 Class 2 whisker-tested matte tin plating on leads. It also specifies packaging in 13" plastic tape and reel with anode oriented toward sprocket holes - a requirement for automated placement in automotive manufacturing lines.
Is SM6S30ATHE3/I suitable for 24 V commercial vehicle applications?
Yes, SM6S30ATHE3/I is rated for 30 V stand-off and clamps at 48.4 V, providing adequate margin above 24 V nominal systems with typical ±20 % regulation. Its 4600 W surge rating and 175 °C junction temperature make it appropriate for heavy-duty truck ECUs where load dump energy exceeds passenger car specifications.
How does the DO-218AC package improve thermal performance versus SMA or SMB?
The DO-218AC package of SM6S30ATHE3/I uses a metal heatsink as the anode terminal, achieving RθJC = 0.95 °C/W - over 30× better than SMA packages (~35 °C/W). This allows direct thermal coupling to PCB copper, enabling sustained power dissipation and stable clamping during repeated transients without thermal runaway.
Does SM6S30ATHE3/I meet ISO 7637-2 Pulse 5 requirements?
Yes, SM6S30ATHE3/I is validated for ISO 7637-2 Pulse 5 (load dump) with both 10/1000 μs (4600 W) and 10/10,000 μs (3600 W) waveforms. Its DO-218AC package and internal structure sustain the 10 ms exponential decay profile required by automotive OEMs, as confirmed in Vishay Document 87735 Figure 2.
Why is SM6S30ATHE3/I marked "Not For New Designs"?
Vishay designates SM6S30ATHE3/I "Not For New Designs" because the newer SM6S30AHM3 variant offers halogen-free materials, tighter VBR binning, and updated qualification records. However, SM6S30ATHE3/I remains fully supported for existing production and legacy program continuity through Aetrix Electronics' lifecycle management services.
SM6S30ATHE3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 95A
- Power - Peak Pulse:
- 4600W (4.6kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AC
SM6S30ATHE3/I FAQ
1.How can I place an order for SM6S30ATHE3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S30ATHE3/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 SM6S30ATHE3/I reliable?
The price and inventory of SM6S30ATHE3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S30ATHE3/I is usually 5 days.
3.What payment methods are accepted for SM6S30ATHE3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S30ATHE3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S30ATHE3/I?
SM6S30ATHE3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S30ATHE3/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 SM6S30ATHE3/I?
For technical support, including SM6S30ATHE3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S30ATHE3/I requirements.
6.How does Aetrix verify that SM6S30ATHE3/I is sourced from the original manufacturer or authorized distributors?
All SM6S30ATHE3/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 SM6S30ATHE3/I meets industry standards.
7.What is the process for return or replacement of SM6S30ATHE3/I?
All SM6S30ATHE3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6S30ATHE3/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 SM6S30ATHE3/I part is unused and in its original packaging.
Return procedure for SM6S30ATHE3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S30ATHE3/I Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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