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Vishay General Semiconductor - Diodes Division SM6S11AHM3/I
- Part No.:
- SM6S11AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AC
- Datasheet:
-
SM6S11AHM3/I.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO218AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,521
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Product details
Overview
SM6S11AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection. It features a 12.2 V (min) to 13.5 V (max) breakdown voltage (VBR), 11 V stand-off voltage (VWM), 4600 W peak pulse power (10/1000 µs), AEC-Q101 qualification, and DO-218AB package with 175 °C junction rating.
For engineers reviewing the SM6S11AHM3/I datasheet, SM6S11AHM3/I pinout, SM6S11AHM3/I application, or SM6S11AHM3/I equivalent, this page delivers verified electrical parameters, thermal performance data, automotive-grade reliability context, and direct alternative part guidance aligned with Vishay's official replacement guidance.
Technical Context
The SM6S11AHM3/I uses passivated anisotropic rectifier technology optimized for high-temperature stability and low leakage. Its unidirectional configuration places the heatsink as the anode, enabling robust clamping during load dump transients up to 10 ms exponential waveforms per ISO 7637-2.
With RθJM = 0.45 °C/W and RθJA = 55 °C/W, it supports high-power surge handling while maintaining TJ ≤ 175 °C under defined PCB mounting conditions. The device exhibits a VBR temperature coefficient of +0.072 %/°C, enabling predictable voltage shift across its operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC blocking threshold in automotive supply rails. |
| VBR (min–max) | 12.2 V to 13.5 V at 5 mA - Confirmed breakdown range ensures reliable turn-on margin above VWM under production tolerance. |
| VC @ IPPM | 18.2 V - Clamping voltage at rated 253 A peak pulse current; limits downstream IC stress during ISO 7637-2 load dump events. |
| PPPM (10/1000 µs) | 4600 W - Peak surge power capability enables single-event protection against high-energy transients without failure. |
| IFSM | 600 A - Non-repetitive forward surge rating supports survival during 8.3 ms half-sine inrush or fault currents. |
| TJ max | 175 °C - Junction temperature rating validated per AEC-Q101, supporting under-hood automotive deployment. |
| Leakage @ VWM, 25 °C | ≤10 µA - Ultra-low reverse leakage preserves battery drain budgets in always-on vehicle modules. |
Pinout & Package
Package: DO-218AB - Surface-mount molded case with matte tin-plated leads, UL 94 V-0 flammability rating, and heatsink-integrated anode terminal. Mounting pad layout follows IPC 7351 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected circuit node; carries clamped transient current to ground/anode return path. |
| Lead 2 / Metal Heatsink | Anode | Primary thermal and electrical return path; must be soldered to large copper area for RθJM = 0.45 °C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, HTRB, and surge testing per JEDEC standards. |
| MSL Level 1 (245 °C peak) | Enables standard SMT reflow without moisture-induced damage; no bake required prior to assembly. |
| Junction passivation design | Reduces surface leakage and improves long-term reliability under high humidity and bias stress. |
| ISO 7637-2 compliance | Meets load dump waveform requirements (test pulses 1, 2a, 3a/b, 5a) when mounted per recommended footprint. |
| Low VF = 1.9 V @ 100 A | Minimizes conduction loss during high-current clamping, reducing localized heating and thermal runaway risk. |
Applications
| Automotive Body Control Module (BCM) | Engine Control Unit (ECU) Power Input Protection |
|---|---|
Use Scenario: Protects BCM microcontroller and CAN transceivers from alternator load dump surges on 12 V battery rail. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and bulk capacitor, clamping transients within 100 ns. Use Value: Limits clamped voltage to 18.2 V, ensuring downstream 24 V-rated regulators and logic remain within absolute maximum ratings. |
Use Scenario: Shields ECU main power stage from inductive switching spikes generated by fuel injectors and ignition coils. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp on primary 12 V input, coordinated with upstream fuse and downstream LC filtering. Use Value: Withstands 600 A surge (8.3 ms) and 253 A transient (10/1000 µs), preventing latch-up or gate oxide rupture in power MOSFET drivers. |
| ADAS Camera Power Supply | Infotainment Head Unit DC-DC Input Stage |
Use Scenario: Safeguards image sensor and serializer ICs in rear-view or surround-view cameras exposed to vehicle-level transients. IC Role / Device Role / Timing Role: Primary transient suppression at camera module's connector interface, ahead of point-of-load converters. Use Value: 10 µA leakage at 11 V preserves low-quiescent current budget (<50 µA) required for parking-mode operation. |
Use Scenario: Guards buck converter input in head units subjected to jump-start and battery-reverse conditions. IC Role / Device Role / Timing Role: Front-end TVS on 12 V input rail, working in coordination with reverse-polarity protection FET. Use Value: 175 °C TJ rating ensures uninterrupted operation during prolonged summer cabin temperatures (>85 °C ambient). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM6S11AHM3 | No /I suffix - lacks industrial-grade tape-and-reel packaging; same electrical specs and AEC-Q101 qualification. | Not suitable for automated SMT lines requiring 13" reel delivery with sprocket-hole orientation. | Select SM6S11AHM3/I when full traceability, RoHS-compliant packaging, and anode-directional tape alignment are required. |
| SM6S12AHM3/I | Higher VWM = 12 V and VBR = 13.3–14.7 V; identical package, surge rating, and thermal specs. | Better suited for systems with tighter margin between nominal 12 V rail and first-stage clamping threshold. | Choose SM6S12AHM3/I if system VIN tolerances exceed ±10 % or if higher turn-on voltage reduces false triggering. |
Compared with SM6S11AHM3/I, SM6S11AHM3 omits traceable reel packaging but retains full electrical equivalence, while SM6S12AHM3/I offers higher standoff voltage for improved noise immunity-both require no PCB redesign but differ in supply chain and voltage-margin trade-offs.
Availability
SM6S11AHM3/I is available at Aetrix Electronics and suitable for automotive body electronics, engine management systems, and ADAS camera modules requiring stable component supply with full AEC-Q101 compliance and long-lifecycle support.
Supply support for SM6S11AHM3/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, TVS devices, and power MOSFETs with emphasis on automotive, industrial, and computing applications.
The SM6S series is engineered specifically for high-reliability automotive transient suppression, targeting ISO 7637-2 load dump and inductive switching protection in 12 V and 24 V vehicle architectures.
FAQ
What is the clamping voltage of the SM6S11AHM3/I at its rated peak pulse current?
The SM6S11AHM3/I has a maximum clamping voltage (VC) of 18.2 V at its rated peak pulse current (IPPM) of 253 A under a 10/1000 µs waveform. This value is measured per standard test conditions and ensures downstream components see limited overvoltage during transient events. The SM6S11AHM3/I maintains this clamping performance across its full operating temperature range due to its specified +0.072 %/°C VBR coefficient.
Is the SM6S11AHM3/I qualified for automotive applications?
Yes, the SM6S11AHM3/I is AEC-Q101 qualified and explicitly designed for automotive use. It meets requirements for temperature cycling, high-temperature reverse bias, and surge testing per the AEC-Q101 standard. Vishay documentation confirms its suitability for load dump protection in body control modules and ECUs, and the device carries the "H" grade indicator in its ordering code denoting AEC-Q101 qualification.
What does the "/I" suffix mean in SM6S11AHM3/I?
The "/I" suffix in SM6S11AHM3/I denotes industrial-grade tape-and-reel packaging: 750 pieces per 13" diameter reel, with anode oriented toward the sprocket hole. This packaging format ensures compatibility with automated pick-and-place equipment and provides full traceability. The "/I" does not affect electrical or thermal specifications-the SM6S11AHM3/I shares identical VBR, VC, PPPM, and AEC-Q101 qualification with non-/I variants.
Can the SM6S11AHM3/I replace older SM6S11A parts?
The SM6S11AHM3/I is a direct functional upgrade to the legacy SM6S11A, featuring enhanced AEC-Q101 qualification, MSL Level 1 rating, and RoHS-compliant construction. While both share identical VWM, VBR, and PPPM, the SM6S11AHM3/I adds automotive-grade reliability validation and improved manufacturability. Vishay explicitly lists SM6S11AHM3/I as the recommended alternative for new designs replacing SM6S11A.
What is the thermal resistance from junction to heatsink for SM6S11AHM3/I?
The SM6S11AHM3/I has a typical thermal resistance from junction to heatsink (RθJM) of 0.45 °C/W, measured using the Transient Dual Interface Method (JEDEC 51-14). This low value is achieved when the metal heatsink (anode terminal) is soldered to a ≥100 mm² copper area. RθJM is critical for sustaining 4600 W surge events without exceeding the 175 °C maximum junction temperature.
SM6S11AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 253A
- 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
SM6S11AHM3/I FAQ
1.How can I place an order for SM6S11AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S11AHM3/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 SM6S11AHM3/I reliable?
The price and inventory of SM6S11AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S11AHM3/I is usually 5 days.
3.What payment methods are accepted for SM6S11AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S11AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S11AHM3/I?
SM6S11AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S11AHM3/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 SM6S11AHM3/I?
For technical support, including SM6S11AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S11AHM3/I requirements.
6.How does Aetrix verify that SM6S11AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM6S11AHM3/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 SM6S11AHM3/I meets industry standards.
7.What is the process for return or replacement of SM6S11AHM3/I?
All SM6S11AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6S11AHM3/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 SM6S11AHM3/I part is unused and in its original packaging.
Return procedure for SM6S11AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S11AHM3/I Tags
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