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Vishay General Semiconductor - Diodes Division SMCJ11AHM3/H
- Part No.:
- SMCJ11AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11AHM3/H.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,809
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Product details
Overview
SMCJ11AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 11 V stand-off voltage (VWM), 18.2 V maximum clamping voltage (VC) at 82.4 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECUs, industrial PLC I/O modules, and telecom power supplies.
For engineers reviewing the SMCJ11AHM3/H datasheet, SMCJ11AHM3/H pinout, SMCJ11AHM3/H application, or SMCJ11AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, low incremental surge resistance, and verified clamping performance under repetitive lightning-surge transients per IEC 61000-4-5.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 12.2–13.5 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable leakage (<5 µA at 11 V) and fast response (<1 ns), while thermal resistance (RθJA = 75 °C/W) supports operation up to +150 °C junction temperature on standard PCB copper pads.
Designed for automated SMT assembly, the device meets JESD 201 Class 2 whisker resistance and MSL Level 1 (260 °C reflow peak), with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity is marked by cathode band; no marking on bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 11 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC (Clamping Voltage) | 18.2 V at 82.4 A - limits downstream IC voltage during 10/1000 µs surge, protecting 12 V logic rails |
| PPPM (Peak Pulse Power) | 1500 W - sustains high-energy transients like ISO 7637-2 Pulse 5a without degradation |
| IPPM (Peak Pulse Current) | 82.4 A - delivers proven surge handling on 0.31" × 0.31" copper pads per JEDEC standards |
| TJ max. | +150 °C - enables use in under-hood automotive environments and sealed industrial enclosures |
| Leakage (ID) | ≤5 µA at 11 V - avoids loading sensitive sensor bias networks or low-power sleep circuits |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during forward surge events |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 12 V rail); initiates clamping when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Halogen-free & RoHS-compliant | Meets EU Directive 2015/863 and IPC-1752A material declaration requirements for green manufacturing |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR ≈ 5.7 V) versus competing 1500 W TVS devices, reducing stress on downstream MOSFETs |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing without dry-pack or baking requirements |
| Glass passivated junction | Ensures stable VBR tolerance (±5%) and <0.1%/°C tempco across full operating range |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting 12 V supply inputs against load dump (ISO 16750-2) and alternator ripple in BCM microcontroller power rails. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed upstream of LDO regulators and MCU VCC pins. Use Value: Limits transient excursions to ≤18.2 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic powered from buck-converted 12 V. | Use Scenario: Shielding 24 V digital input channels from inductive kickback when switching solenoids or relays in factory automation systems. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on field-side input traces before optocoupler isolation barriers. Use Value: Absorbs >1500 W surges without failure, maintaining channel integrity during repeated 100 ms coil de-energization events. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Drive Board |
Use Scenario: Safeguarding AC/DC adapter secondary-side 12 V outputs from lightning-induced surges entering via Ethernet or PoE interfaces. IC Role / Device Role / Timing Role: Secondary-stage TVS on DC bus, coordinated with primary MOV and gas discharge tube (GDT) for staged clamping. Use Value: Provides sub-20 V clamping within 1 ns, complementing slower primary protectors to meet IEC 61000-4-5 Level 4 immunity. | Use Scenario: Suppressing commutation spikes on BLDC motor phase traces in smart washing machine control boards. IC Role / Device Role / Timing Role: Snubber-connected TVS across half-bridge FETs to clamp inductive flyback during PWM switching. Use Value: Withstands 82.4 A pulses at 100 kHz switching frequency, eliminating need for external RC snubbers and reducing BOM count. |
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-M3/86A | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (19.9 V) | Not suitable for ISO 7637-2 Pulse 5a; limited to low-energy signal-line protection | Select only for space-constrained non-automotive designs where 1500 W surge margin is unnecessary |
| SMCJ11AHE3_A/H | Same electrical specs, but RoHS-compliant commercial grade (E3) without halogen-free or AEC-Q101 qualification | Lacks automotive qualification; not approved for under-hood or safety-critical modules | Choose for cost-sensitive industrial or consumer applications where AEC-Q101 is not mandated |
Compared with SMAJ11A-M3/86A and SMCJ11AHE3_A/H, the SMCJ11AHM3/H uniquely combines 1500 W surge capability, AEC-Q101 validation, and halogen-free construction - making it the only option qualified for automotive power rail protection requiring both high energy absorption and long-term reliability in harsh environments.
Availability
SMCJ11AHM3/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply with full traceability and lifecycle management.
Supply support for SMCJ11AHM3/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 SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where consistent clamping, low leakage, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the SMCJ11AHM3/H at its rated peak pulse current?
The SMCJ11AHM3/H has a maximum clamping voltage (VC) of 18.2 V at its rated peak pulse current of 82.4 A using the standard 10/1000 µs waveform. This value is measured under JEDEC-defined conditions with 0.31" × 0.31" copper pads and confirms the device's ability to limit transient overvoltages to safe levels for 12 V system components. The SMCJ11AHM3/H maintains this clamping performance across its full operating temperature range.
Is the SMCJ11AHM3/H suitable for automotive applications?
Yes, the SMCJ11AHM3/H is explicitly qualified to AEC-Q101 and carries the HM3 suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It is validated for temperature cycling, high-temperature reverse bias, and mechanical shock - making it appropriate for engine control units, body control modules, and ADAS power domains. The SMCJ11AHM3/H meets ISO 7637-2 and IEC 61000-4-5 surge immunity requirements when properly mounted.
How does the SMCJ11AHM3/H differ from the SMCJ11AHE3_A/H variant?
The SMCJ11AHM3/H and SMCJ11AHE3_A/H share identical electrical specifications (VWM, VC, PPPM, etc.) and package (SMC), but differ in qualification and materials: SMCJ11AHM3/H is halogen-free and AEC-Q101 qualified, whereas SMCJ11AHE3_A/H is RoHS-compliant commercial grade without automotive validation. The SMCJ11AHM3/H is required for automotive Tier 1 supply chains; the SMCJ11AHE3_A/H serves cost-driven industrial applications.
What is the maximum operating junction temperature for the SMCJ11AHM3/H?
The SMCJ11AHM3/H has a maximum operating junction temperature (TJ) of +150 °C, enabling reliable operation in high-ambient environments such as under-hood automotive locations or enclosed industrial drives. Its thermal resistance (RθJA = 75 °C/W) is specified with JEDEC-standard 0.31" × 0.31" copper pads, and derating curves in the datasheet allow precise lifetime estimation at elevated ambient temperatures. This TJ rating applies to the SMCJ11AHM3/H across its full power dissipation range.
Does the SMCJ11AHM3/H have polarity marking, and how is it identified?
Yes, the SMCJ11AHM3/H is a unidirectional TVS diode and features a visible cathode band on the package body - located adjacent to the cathode terminal - per DO-214AB standard. This band must be oriented toward the higher-potential side (e.g., 12 V rail) during PCB layout. Bidirectional variants (e.g., SMCJ11CA) omit this marking. The SMCJ11AHM3/H's polarity is critical for correct clamping behavior and must be verified during schematic capture and layout review.
SMCJ11AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 82.4A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ11AHM3/H FAQ
1.How can I place an order for SMCJ11AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11AHM3/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 SMCJ11AHM3/H reliable?
The price and inventory of SMCJ11AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ11AHM3/H is usually 5 days.
3.What payment methods are accepted for SMCJ11AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11AHM3/H?
SMCJ11AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11AHM3/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 SMCJ11AHM3/H?
For technical support, including SMCJ11AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11AHM3/H requirements.
6.How does Aetrix verify that SMCJ11AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ11AHM3/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 SMCJ11AHM3/H meets industry standards.
7.What is the process for return or replacement of SMCJ11AHM3/H?
All SMCJ11AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11AHM3/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 SMCJ11AHM3/H part is unused and in its original packaging.
Return procedure for SMCJ11AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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