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Vishay General Semiconductor - Diodes Division SMC3K15CAHM3_A/I
- Part No.:
- SMC3K15CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K15CAHM3_A/I.pdf
- Description:
- 3KW, 15V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,003
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Product details
Overview
SMC3K15CAHM3_A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) designed for robust overvoltage protection in automotive and industrial power rails and signal lines. It delivers 3000 W peak pulse power (10/1000 μs), clamps at 24.4 V under 923 A surge current, and features a 15 V standoff voltage with 16.7–18.5 V breakdown range. It is AEC-Q101 qualified and used to protect MOSFETs and sensor interfaces against ISO 7637-2 Pulse 1/2a/3a/3b transients.
For engineers reviewing the SMC3K15CAHM3_A datasheet, SMC3K15CAHM3_A pinout, SMC3K15CAHM3_A application, or SMC3K15CAHM3_A equivalent, key selection criteria include its bidirectional clamping behavior, 175 °C max junction temperature, DO-214AB package compatibility, and compliance with IEC 61000-4-2 (30 kV ESD) and ISO 16750-2 Pulse b load dump requirements.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, activating when reverse transient voltage exceeds its 16.7–18.5 V breakdown threshold. Its low incremental surge resistance ensures rapid energy diversion during 10/1000 μs and 8/20 μs pulses, with clamping voltage held to 24.4 V at 923 A (10/1000 μs) and 32.5 V at 1245 A (8/20 μs).
Designed for high-reliability automotive environments, it meets AEC-Q101 stress testing, MSL Level 1 reflow (260 °C peak), and UL 497B recognition (E136766). Its halogen-free, RoHS-compliant SMC (DO-214AB) package supports automated assembly and withstands -55 °C to +175 °C operating temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 15 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below breakdown. |
| Breakdown Voltage (VBR) | 16.7–18.5 V at 1 mA - Confirmed voltage range where device enters avalanche conduction; ensures predictable turn-on under transients. |
| Clamping Voltage (VC) | 24.4 V at 923 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines downstream component stress. |
| Peak Pulse Power (PPPM) | 3000 W (10/1000 μs) - Sustained transient energy handling capability; validates protection against common automotive load dump and switching spikes. |
| Junction Temperature Range | -55 °C to +175 °C - Enables deployment in under-hood automotive ECUs and industrial motor drives without thermal derating concerns. |
| ESD Rating | ±30 kV (IEC 61000-4-2, contact/air) - Provides immunity to human-body-model electrostatic discharge events during handling and operation. |
| AEC-Q101 Qualified | Yes - Certified for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC stress test standards. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 thermal shock requirements; halogen-free molding compound complies with UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Anode connection in bidirectional layout | Both terminals are functionally symmetric; no cathode/anode distinction-device conducts identically in either direction above VBR. |
| Anode (unmarked end) | Cathode connection in bidirectional layout | Terminal symmetry enables placement flexibility on PCB; no orientation dependency during assembly or operation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC-coupled or floating signal lines without polarity constraints-ideal for CAN, LIN, and sensor differential pairs. |
| 30 kW surge rating (8/20 μs) | Handles high-energy lightning-induced surges per IEC 61000-4-5, enabling use in telecom and industrial fieldbus interfaces. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during fast transients-critical for safeguarding 16 V-rated microcontrollers and analog front-ends. |
| MSL Level 1 moisture sensitivity | Eliminates bake-out requirement prior to reflow; supports standard SMT line throughput without process modification. |
| UL 497B recognition (E136766) | Validates safety compliance for secondary-circuit surge protection in certified end equipment (e.g., automotive infotainment, ADAS modules). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppresses load dump pulses (ISO 16750-2 Pulse b) and inductive switching spikes on 12 V battery-fed ECUs. IC Role / Device Role: Shunt TVS placed across power input to clamp transients before they reach DC/DC converters and MCU power supplies. Use Value: Prevents latch-up or permanent damage to 16 V-rated PMICs and microcontrollers during alternator regulation faults. |
Use Scenario: Shields analog outputs of pressure/temperature sensors from ESD and cable discharge events in factory automation. IC Role / Device Role: Bidirectional TVS installed between signal line and ground to absorb ±30 kV HBM ESD without polarity concern. Use Value: Maintains signal integrity and prevents false readings caused by transient-induced ADC saturation or reset events. |
| Automotive CAN Bus Protection | Consumer Power Adapter Input Protection |
Use Scenario: Guards high-speed CAN FD transceivers against ISO 7637-2 Pulse 1 (inductive kick) and Pulse 3b (capacitive coupling). IC Role / Device Role: Low-capacitance TVS connected line-to-line and line-to-ground on differential bus to preserve signal rise/fall times. Use Value: Limits bus voltage excursion to ≤24.4 V while maintaining >1 Mbps data integrity-verified per ISO 11898-2 EMC test plans. |
Use Scenario: Protects AC-DC adapter primary-side rectifier and controller ICs from mains-borne surges (IEC 61000-4-5 Level 3). IC Role / Device Role: Front-end TVS absorbing 3000 W transients before they stress bridge rectifiers and PWM controllers. Use Value: Extends adapter lifetime in regions with unstable grid conditions; eliminates need for bulkier MOV-based solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA | Lower PPPM (400 W), SMA package (smaller footprint, higher RthJA = 110 °C/W), same 15 V VWM and bidirectional structure. | Not AEC-Q101 qualified; limited to consumer/commercial grade designs with lower surge exposure. | Select when cost and board space are critical, and surge threat level is below ISO 7637-2 Pulse 2a. |
| 1.5KE15CA | Higher PPPM (1500 W), axial leaded DO-201 package, same VWM/VBR range, but not MSL-1 or AEC-Q101 rated. | Requires through-hole assembly; unsuitable for automated SMT lines or high-vibration automotive mounting. | Choose only for legacy through-hole designs where rework to SMC is impractical and AEC qualification is unnecessary. |
Compared with SMAJ15CA and 1.5KE15CA, SMC3K15CAHM3_A uniquely combines 3000 W surge capacity, AEC-Q101 qualification, MSL Level 1 reflow compatibility, and DO-214AB surface-mount form factor-making it the only option validated for next-generation automotive power domain protection.
Availability
SMC3K15CAHM3_A is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface hardening, and consumer power adapter surge protection requiring stable component supply and long-term lifecycle support.
Supply support for SMC3K15CAHM3_A 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 SMC3KxxCAHM3_A series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive environments-including engine control, body electronics, and ADAS subsystems.
FAQ
What is the maximum clamping voltage of SMC3K15CAHM3_A under a 10/1000 μs surge?
The SMC3K15CAHM3_A clamps to a maximum of 24.4 V when subjected to its rated 923 A peak pulse current with a 10/1000 μs waveform. This value is measured and guaranteed per the Vishay datasheet (Document Number 98241, Rev. 09-Jan-2024), and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is SMC3K15CAHM3_A suitable for protecting CAN FD bus lines?
Yes, SMC3K15CAHM3_A is suitable for CAN FD protection due to its bidirectional operation, low clamping voltage (24.4 V), and fast response time. Its DO-214AB package allows compact line-to-line and line-to-ground placement, and its compliance with ISO 7637-2 Pulse 3b ensures robustness against capacitive coupling transients common in vehicle harnesses-key for maintaining >5 Mbps CAN FD signal fidelity.
Does SMC3K15CAHM3_A require special handling for moisture sensitivity?
No, SMC3K15CAHM3_A is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can be processed using standard reflow profiles up to 260 °C peak without pre-baking. This eliminates moisture-related popcorning risk and simplifies manufacturing for high-volume automotive PCB assembly lines.
How does the AEC-Q101 qualification of SMC3K15CAHM3_A impact its use in automotive designs?
The AEC-Q101 qualification of SMC3K15CAHM3_A certifies that it has passed accelerated stress tests-including temperature cycling, high-temperature operating life, and ESD-required for automotive semiconductor components. This validation enables direct use in safety-critical domains like powertrain and chassis systems without additional qualification effort by the Tier 1 supplier or OEM.
What is the thermal resistance from junction to ambient (RthJA) for SMC3K15CAHM3_A?
The junction-to-ambient thermal resistance (RthJA) of SMC3K15CAHM3_A is 90 °C/W when mounted on a standard FR4 PCB with 2 oz. copper, per JEDEC 51-2A. This value informs thermal design margins-e.g., at 1 W steady-state dissipation, junction temperature rises ~90 °C above ambient-critical for ensuring reliable operation within its -55 °C to +175 °C TJ range.
SMC3K15CAHM3_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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 123A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC3K15CAHM3_A/I FAQ
1.How can I place an order for SMC3K15CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K15CAHM3_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 SMC3K15CAHM3_A/I reliable?
The price and inventory of SMC3K15CAHM3_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 SMC3K15CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMC3K15CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K15CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K15CAHM3_A/I?
SMC3K15CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K15CAHM3_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 SMC3K15CAHM3_A/I?
For technical support, including SMC3K15CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K15CAHM3_A/I requirements.
6.How does Aetrix verify that SMC3K15CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMC3K15CAHM3_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 SMC3K15CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMC3K15CAHM3_A/I?
All SMC3K15CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K15CAHM3_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 SMC3K15CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMC3K15CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K15CAHM3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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