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Vishay General Semiconductor - Diodes Division SMCJ11CAHM3_A/I
- Part No.:
- SMCJ11CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11CAHM3_A/I.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMCJ11CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with a 10/1000 μs waveform. It features a standoff voltage of 11 V, breakdown voltage range 12.2–13.5 V at 1 mA test current, and clamps to ≤18.2 V at 82.4 A peak surge current - deployed for protecting automotive sensor signal lines, industrial I/O ports, and telecom interface circuits.
For engineers reviewing the SMCJ11CAHM3_A/I datasheet, SMCJ11CAHM3_A/I pinout, SMCJ11CAHM3_A/I application, or SMCJ11CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and thermal resistance (RθJA = 75 °C/W) under standard PCB pad layout.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, critical for consistent clamping during repetitive ESD or lightning-induced surges.
The device is rated for operation from −55 °C to +150 °C junction temperature and meets MSL Level 1 per J-STD-020 with peak reflow temperature of 260 °C. Its 1500 W peak pulse power rating is validated on 8.0 mm × 8.0 mm copper pads per terminal, and it exhibits a temperature coefficient of VBR of +0.080 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 11 V - maximum continuous reverse working voltage before significant leakage begins; defines upper limit of normal operating signal swing. |
| Breakdown Voltage (VBR) | 12.2–13.5 V at 1 mA - voltage at which device transitions from high-impedance to low-impedance clamping state; ensures reliable triggering above VWM. |
| Clamping Voltage (VC) | ≤18.2 V at 82.4 A (10/1000 μs) - maximum voltage seen by protected circuit during worst-case surge; determines safe margin for downstream ICs. |
| Peak Pulse Power (PPPM) | 1500 W - energy-handling capacity for standardized transient waveforms; supports robust protection against IEC 61000-4-5 Level 4 surges. |
| Leakage Current (ID) | ≤5.0 μA at 11 V - minimal DC loading on signal path during normal operation; preserves signal integrity in high-impedance interfaces. |
| Junction Temperature Range | −55 °C to +150 °C - enables deployment in under-hood automotive, industrial control cabinets, and outdoor telecom enclosures. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place. |
Pinout & Package
SMCJ11CAHM3_A/I uses the SMC (DO-214AB) package: a two-terminal, non-polarized surface-mount case with matte tin-plated leads solderable per J-STD-002. Bidirectional construction means no cathode/anode marking; terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient voltage input/output node | Connected to protected line (e.g., CAN_H or RS-485 A); conducts surge current bidirectionally to ground reference. |
| Terminal 2 | Transient voltage input/output node | Connected to same protected line or complementary line (e.g., CAN_L or RS-485 B); completes symmetrical clamping path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for engine control, ADAS sensor, and infotainment modules. |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-20 and JESD201 Class 2 whisker resistance; supports green manufacturing and end-of-life recycling mandates. |
| Low incremental surge resistance | Enables tighter clamping voltage window (VC − VBR ≈ 5.7 V), reducing stress on downstream MOSFET gates or MCU I/O pins during fast transients. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates baking requirement and simplifies SMT line logistics for high-volume production. |
| Glass-passivated junction | Provides stable VBR tolerance and long-term parameter drift < ±3 % over 1000 hrs at 85 °C/85 % RH - critical for field-deployed industrial systems. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between sensor output and microcontroller ADC input to limit transient overvoltage. Use Value: Maintains signal fidelity below 11 V DC while suppressing 100 V/100 ns spikes to ≤18.2 V, preventing ADC saturation or latch-up in AEC-Q100 Grade 2 MCUs. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) in factory automation PLC backplanes subject to ground bounce and cable ESD. IC Role / Device Role / Timing Role: Differential-line TVS connected across A/B bus lines to shunt common-mode surges before they reach transceiver ESD structures. Use Value: Clamps 1 kV EFT bursts to <18.2 V within <1 ns, preserving data integrity and avoiding bus lockup without adding capacitance-induced signal distortion. |
| Telecom DSL Line Protection | Consumer USB Port ESD Guard |
|
Use Scenario: Front-end protection of ADSL/VDSL line drivers in residential gateways where induced lightning surges couple onto twisted-pair telephone lines. IC Role / Device Role / Timing Role: Primary surge suppressor placed between transformer secondary and line driver IC to absorb longitudinal mode transients. Use Value: Handles 10/1000 μs surges up to 1500 W without degradation, meeting ITU-T K.20/21 immunity requirements while maintaining <1 pF junction capacitance at 0 V bias. |
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines in smart home hubs, supplementing internal transceiver ESD cells. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp that activates before internal 8-kV HBM diodes, reducing cumulative stress on PHY silicon. Use Value: Limits 15-kV contact discharge to <18.2 V in <1 ns, preventing bit errors and port reset events during user hot-plug events in ungrounded environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11CAHE3_A/I | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR specs | Suitable for space-constrained consumer electronics; insufficient for automotive load dump or industrial surge standards | Select when board area is limited and surge threat level is ≤IEC 61000-4-2 Level 3. |
| SMCJ11CAHE3_A/I | Same electrical specs and SMC package, but RoHS-compliant without halogen-free certification; not AEC-Q101 qualified | Acceptable for commercial/industrial use where automotive qualification is not mandated | Choose for cost-sensitive non-automotive designs requiring identical clamping performance and footprint. |
Compared with SMCJ11CAHM3_A/I, SMAJ11CAHE3_A/I trades surge robustness for compactness, while SMCJ11CAHE3_A/I matches mechanical and electrical behavior but lacks halogen-free and AEC-Q101 validation - making SMCJ11CAHM3_A/I the sole choice for Tier-1 automotive supply chains requiring full compliance traceability.
Availability
SMCJ11CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, telecom DSL line cards, and consumer USB host ports requiring stable component supply across multi-year production cycles.
Supply support for SMCJ11CAHM3_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 reliability, precision, and application-specific optimization.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where failure modes must be mitigated without compromising signal integrity or thermal performance.
FAQ
What is the clamping voltage of the SMCJ11CAHM3_A/I at its rated peak pulse current?
The SMCJ11CAHM3_A/I clamps to a maximum of 18.2 V when subjected to its rated peak pulse current of 82.4 A using the standardized 10/1000 μs waveform. This value is measured under specified test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCJ11CAHM3_A/I maintains this clamping performance consistently across its qualified temperature range.
Is the SMCJ11CAHM3_A/I suitable for automotive applications?
Yes, the SMCJ11CAHM3_A/I is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials - meeting critical requirements for automotive electronics including engine control units, body control modules, and ADAS sensor interfaces. Its −55 °C to +150 °C operating range, MSL Level 1 rating, and validated surge endurance make the SMCJ11CAHM3_A/I appropriate for under-hood and cabin-deployed systems governed by ISO/TS 16949 processes.
How does the bidirectional configuration of the SMCJ11CAHM3_A/I affect its circuit placement?
The SMCJ11CAHM3_A/I has no polarity marking and functions identically in both directions, allowing direct placement across differential signal pairs (e.g., RS-485 A/B or CAN_H/L) or single-ended lines referenced to ground without orientation concerns. Unlike unidirectional TVS diodes, the SMCJ11CAHM3_A/I avoids risk of incorrect installation and supports AC-coupled or floating-bus architectures where voltage reversals occur during normal operation.
What is the thermal resistance of the SMCJ11CAHM3_A/I, and how does it impact PCB layout?
The SMCJ11CAHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended pad layout - defined as 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperatures during repeated surge events, PCB layouts must adhere to this pad size; reducing copper area increases thermal impedance and risks exceeding the 150 °C maximum junction temperature, especially in enclosed or high-ambient environments.
Does the SMCJ11CAHM3_A/I meet any specific industry surge immunity standards?
The SMCJ11CAHM3_A/I's 1500 W peak pulse power rating (10/1000 μs) enables compliance with key surge immunity standards including IEC 61000-4-5 Level 4 (4 kV line-to-earth, 2 kV line-to-line), ISO 7637-2 Pulse 5a/b (load dump), and Telcordia GR-1089-CORE lightning surge requirements. While the device itself is not certified to these standards, its validated electrical parameters allow system-level designs incorporating the SMCJ11CAHM3_A/I to achieve full compliance when applied per Vishay's recommended layout and grounding practices.
SMCJ11CAHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
SMCJ11CAHM3_A/I FAQ
1.How can I place an order for SMCJ11CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11CAHM3_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 SMCJ11CAHM3_A/I reliable?
The price and inventory of SMCJ11CAHM3_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 SMCJ11CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ11CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11CAHM3_A/I?
SMCJ11CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11CAHM3_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 SMCJ11CAHM3_A/I?
For technical support, including SMCJ11CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11CAHM3_A/I requirements.
6.How does Aetrix verify that SMCJ11CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ11CAHM3_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 SMCJ11CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ11CAHM3_A/I?
All SMCJ11CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11CAHM3_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 SMCJ11CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMCJ11CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ11CAHM3_A/I Tags
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