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Vishay General Semiconductor - Diodes Division 1.5SMC11AHM3/I
- Part No.:
- 1.5SMC11AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11AHM3/I.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,411
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Product details
Overview
1.5SMC11AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 11 V breakdown voltage (VBR min/max = 10.5–11.6 V at 1 mA), 9.4 V stand-off voltage (VWM), 15.6 V clamping voltage (VC) at 96.2 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 µs waveform - suitable for automotive sensor interface protection against load dump and ESD.
For engineers reviewing the 1.5SMC11AHM3/I datasheet, 1.5SMC11AHM3/I pinout, 1.5SMC11AHM3/I application, or 1.5SMC11AHM3/I equivalent, this device delivers verified AEC-Q101 qualification, halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and low incremental surge resistance - critical for high-reliability industrial and automotive PCB designs requiring repeatable transient suppression without derating penalties.
Technical Context
The 1.5SMC11AHM3/I operates as a unidirectional clamping TVS diode with avalanche breakdown behavior, triggered when reverse voltage exceeds its 9.4 V stand-off threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1.0 ns), enabling effective suppression of sub-microsecond transients induced by inductive switching or ESD events.
Thermally, it uses the SMC (DO-214AB) package with RθJA = 75 °C/W and RθJL = 15 °C/W, supporting 6.5 W steady-state power dissipation at 50 °C ambient on infinite heatsink. The cathode-band marking confirms polarity, and its 200 A IFSM rating allows survival of 8.3 ms half-sine surge currents common in automotive 12 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V at 1 mA - defines precise avalanche initiation window for predictable clamping onset |
| VWM | 9.4 V - maximum continuous reverse operating voltage before leakage exceeds 5 μA |
| VC @ IPPM | 15.6 V at 96.2 A - clamped voltage during 1500 W 10/1000 µs transient, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling per JEDEC standard, enabling protection against lightning-induced surges |
| IFSM | 200 A - single half-sine surge current rating (8.3 ms), validating robustness in automotive load-dump scenarios |
| TJ max | +150 °C - maximum junction temperature, supporting operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak), and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode (banded end) | Avalanche clamping terminal | Connected to protected line (e.g., 12 V supply or CAN_H); conducts when reverse voltage exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-609A Class 1 requirements for green manufacturing |
| 1500 W peak pulse power | Enables single-device protection against ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Level 4 surges |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes voltage overshoot during clamping, reducing risk of damage to downstream 12 V logic or analog ICs |
| Fast response time & low dynamic impedance | Sub-nanosecond turn-on and <0.1 Ω incremental surge resistance ensure minimal let-through energy |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V analog sensor outputs (e.g., pressure, temperature) from inductive kickback and battery transients in engine control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output line and chassis ground, clamping transients before they reach ADC input or op-amp buffer. Use Value: Maintains signal integrity below 15.6 V clamp level while surviving repeated 100 V/50 ms load dump pulses per ISO 16750-2. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on input line to suppress >1 kV transients without false triggering, coordinated with series current-limiting resistor. Use Value: Enables reliable 24 V DC input operation with <5 μA leakage at 24 V nominal, preventing false logic states during normal operation. |
| Telecom Power Supply Rail Protection | Consumer Appliance Motor Driver Protection |
Use Scenario: Shielding primary-side 48 V DC-DC converter inputs in PoE-powered telecom equipment from lightning-induced surges on Ethernet cabling. IC Role / Device Role / Timing Role: Primary-stage TVS on 48 V rail upstream of DC-DC controller, absorbing up to 1500 W short-duration surges. Use Value: Clamps 48 V rail to ≤70 V during IEC 61000-4-5 2 kV combination wave, preserving MOSFET gate oxide integrity. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: Unidirectional TVS across motor terminals, conducting only during negative voltage excursions relative to ground. Use Value: Limits flyback voltage to 15.6 V, protecting H-bridge MOSFETs rated for 20 V VDS and extending driver IC lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A | Same VWM (9.4 V) and VC (15.6 V), but lower PPPM = 400 W and smaller SMA package (DO-214AC) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4 | Select when space-constrained layouts require smaller footprint and surge energy is ≤400 W |
| 1.5KE11A | Through-hole TO-204AE (DO-201AE) package, identical electrical specs but higher RθJA (100 °C/W) and no AEC-Q101 qualification | Not qualified for automotive use; requires manual soldering or wave-solder process | Choose for legacy through-hole designs where board real estate permits and automotive qualification is not required |
Compared with SMAJ11A and 1.5KE11A, the 1.5SMC11AHM3/I uniquely combines AEC-Q101 qualification, 1500 W surge capacity, halogen-free compliance, and SMC's superior thermal performance - making it the only option validated for high-volume automotive electronics requiring zero field failures under repetitive transient stress.
Availability
1.5SMC11AHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, telecom power rails, and consumer appliance motor drivers requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC11AHM3/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, rectifiers, and protection devices for demanding industrial and automotive applications.
The 1.5SMC Series was engineered specifically for surface-mount transient suppression in harsh environments, emphasizing AEC-Q101 qualification, high pulse power density, and consistent clamping performance across temperature extremes.
FAQ
What is the clamping voltage of the 1.5SMC11AHM3/I at its rated peak pulse current?
The 1.5SMC11AHM3/I has a maximum clamping voltage (VC) of 15.6 V at its rated peak pulse current (IPPM) of 96.2 A, measured under the standard 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range (-65 °C to +150 °C) and ensures downstream components see no more than 15.6 V during transient events. The 1.5SMC11AHM3/I achieves this with low dynamic impedance, minimizing let-through energy.
Is the 1.5SMC11AHM3/I qualified for automotive applications?
Yes, the 1.5SMC11AHM3/I carries full AEC-Q101 qualification, confirmed by Vishay's official documentation and ordering code suffix "HM3" (halogen-free, RoHS-compliant, AEC-Q101 qualified). It undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per the AEC-Q101 standard, making it suitable for under-hood and body-control module applications. The 1.5SMC11AHM3/I is explicitly listed in Vishay's AEC-Q101 qualified product matrix.
What does the "HM3" suffix mean in 1.5SMC11AHM3/I?
The "HM3" suffix in 1.5SMC11AHM3/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. "H" denotes halogen-free molding compound meeting IEC 61249-2-21, "M3" specifies RoHS compliance per JEDEC J-STD-609A Class 1, and the "_I" ending signifies packaging in 13-inch tape-and-reel (3500 units/reel). This distinguishes it from commercial-grade "M3" or automotive "HE3" variants. The 1.5SMC11AHM3/I meets JESD201 Class 2 whisker resistance and MSL Level 1 handling requirements.
How does the 1.5SMC11AHM3/I compare to bidirectional TVS diodes like 1.5SMC11CA?
The 1.5SMC11AHM3/I is unidirectional and optimized for DC line protection where polarity is fixed (e.g., 12 V supply rails), offering lower leakage (<5 μA at 9.4 V) and tighter VBR tolerance. In contrast, 1.5SMC11CA is bidirectional, suited for AC or differential lines (e.g., RS-485), but exhibits higher leakage and reduced surge margin due to dual-junction structure. The 1.5SMC11AHM3/I cannot replace 1.5SMC11CA in AC-coupled applications without circuit redesign.
What is the thermal resistance of the 1.5SMC11AHM3/I, and how does it affect layout design?
The 1.5SMC11AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal, and junction-to-lead resistance (RθJL) of 15 °C/W. To maintain safe operation at full 6.5 W power dissipation, PCB layout must provide minimum copper area per pad as specified in Vishay's SMC footprint guidelines - undersized pads cause thermal runaway and premature failure. The 1.5SMC11AHM3/I datasheet Figure 2 provides derating curves for elevated ambient temperatures.
1.5SMC11AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 96.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
1.5SMC11AHM3/I FAQ
1.How can I place an order for 1.5SMC11AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11AHM3/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 1.5SMC11AHM3/I reliable?
The price and inventory of 1.5SMC11AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC11AHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC11AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11AHM3/I?
1.5SMC11AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11AHM3/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 1.5SMC11AHM3/I?
For technical support, including 1.5SMC11AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11AHM3/I requirements.
6.How does Aetrix verify that 1.5SMC11AHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11AHM3/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 1.5SMC11AHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC11AHM3/I?
All 1.5SMC11AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11AHM3/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 1.5SMC11AHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC11AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC11AHM3/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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