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Vishay General Semiconductor - Diodes Division SMC3K54CAHM3_A/H
- Part No.:
- SMC3K54CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K54CAHM3_A/H.pdf
- Description:
- 3KW, 54V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,335
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Product details
Overview
SMC3K54CAHM3_A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for automotive-grade overvoltage protection. It features a 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR), 87.1 V clamping voltage (VC) at 34.4 A peak pulse current (IPPM), and 3000 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and used to protect MOSFETs and sensor signal lines against ISO 7637-2 and ISO 16750-2 transients.
For engineers reviewing the SMC3K54CAHM3_A datasheet, SMC3K54CAHM3_A pinout, SMC3K54CAHM3_A application, or SMC3K54CAHM3_A equivalent, key selection criteria include clamping performance under 10/1000 μs and 8/20 μs waveforms, bidirectional surge handling capability, AEC-Q101 qualification status, thermal resistance (RthJM = 4.0 °C/W), and compliance with IEC 61000-4-2 ESD (30 kV contact/air).
Technical Context
This TVS diode operates bidirectionally with symmetrical clamping characteristics, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its low incremental surge resistance and fast response time ensure effective suppression of sub-microsecond transients such as load dump spikes and ESD events.
The device meets ISO 7637-2 Pulse 1, 2a, 3a, 3b and ISO 16750-2 Pulse b requirements for 12 V automotive systems, delivering verified clamping voltages down to −36 V / +42 V (Pulse 3b) and stable performance up to TJ = 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before conduction begins; defines safe working range for 48 V nominal systems. |
| VBR min/max | 60.0 V / 66.3 V - Breakdown occurs within this band at 1 mA test current; ensures predictable turn-on threshold across production lots. |
| VC @ IPPM | 87.1 V at 34.4 A (10/1000 μs) - Clamping voltage during worst-case surge; limits downstream IC stress below 90 V. |
| PPPM | 3000 W (10/1000 μs) - Peak transient energy absorption capacity; supports robust protection in engine control and body electronics. |
| TJ max | +175 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments. |
| ESD Rating | 30 kV per IEC 61000-4-2 (contact/air) - Withstands high-energy electrostatic discharge without degradation. |
| RthJM | 4.0 °C/W - Low junction-to-mount thermal resistance; facilitates efficient heat transfer to PCB copper pour or heatsink pad. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Matte tin-plated leads, MSL level 1, LF peak 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Common terminal for bidirectional clamping | No polarity marking on bidirectional types; terminals are functionally symmetric for AC transient suppression. |
| Anode | Common terminal for bidirectional clamping | Both terminals behave identically under reverse or forward surge; no directional installation required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential buses (e.g., CAN, LIN) or AC-coupled analog signals without polarity constraints. |
| 30 kW surge rating (8/20 μs) | Supports high-energy lightning-induced surges per IEC 61000-4-5 Level 3, critical for telematics and gateway modules. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock-required for powertrain and chassis ECUs. |
| UL 497B recognition (E136766) | Confirms safety compliance for telecom and industrial interface protection where regulatory certification is mandatory. |
| Low RthJM (4.0 °C/W) | Reduces thermal derating impact in high-power pulse scenarios, maintaining 3000 W capability over extended pulse trains. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V digital input channels from load dump and relay coil flyback in vehicle door modules and lighting controllers. IC Role / Device Role: Primary transient shunt placed directly at connector entry point before optocoupler or MCU GPIO. Use Value: Clamps ISO 7637-2 Pulse 2a (112 V, 50 μs) to ≤35 V, preventing damage to 5 V logic-level receivers. |
Use Scenario: Safeguarding 24 V DC digital inputs on programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role: Standoff-rated TVS mounted inline with field wiring to absorb repetitive 400 V/100 ns transients. Use Value: Maintains <2 μA leakage at 54 V, ensuring compatibility with high-impedance current-sensing input circuits. |
| Automotive Sensor Signal Line Protection | Telecom Interface Surge Protection |
Use Scenario: Shielding analog outputs of pressure and temperature sensors in engine bay applications subject to ISO 16750-2 Pulse b load dump. IC Role / Device Role: Bidirectional clamp across differential sensor pair (e.g., analog 0–5 V output) to suppress common-mode surges. Use Value: Delivers matched clamping symmetry (<±0.5 V imbalance) preserving signal integrity during 101 V/400 ms pulses. |
Use Scenario: Protecting RS-485 transceiver I/O pins in outdoor base station equipment subjected to lightning-induced surges. IC Role / Device Role: Secondary-level TVS deployed after primary gas discharge tube (GDT) to handle residual fast-rising energy. Use Value: Responds in <1 ns to limit let-through voltage to <113 V (8/20 μs), meeting IEC 61000-4-5 Level 3 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54CA | Lower PPPM (400 W vs. 3000 W); SMA package (smaller footprint, higher RthJA = 110 °C/W) | Suitable only for low-energy ESD or board-level secondary protection-not for ISO 7637-2 primary suppression. | Select when space-constrained and surge energy is limited to <500 W; not drop-in for automotive load dump. |
| 1.5KE54CA | Higher power (1500 W), axial lead DO-201 package; no AEC-Q101 qualification; RthJM not specified | Requires through-hole mounting; unsuitable for automated SMT assembly or under-hood thermal cycling. | Use only in non-automotive industrial controls where reflow compatibility and AEC validation are not required. |
Compared with SMAJ54CA and 1.5KE54CA, SMC3K54CAHM3_A delivers 7.5× higher peak pulse power in an AEC-Q101-qualified SMT package with proven thermal performance (RthJM = 4.0 °C/W), making it the only option validated for primary-level automotive transient suppression in BCM and sensor modules.
Availability
SMC3K54CAHM3_A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and telecom interface surge suppression requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for SMC3K54CAHM3_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 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for AEC-Q101-compliant automotive transient suppression with emphasis on ISO 7637-2 and ISO 16750-2 compliance, high clamping efficiency, and robust thermal performance.
FAQ
What is the clamping voltage of SMC3K54CAHM3_A at 34.4 A?
The clamping voltage of SMC3K54CAHM3_A is 87.1 V when subjected to a 10/1000 μs waveform at 34.4 A peak pulse current (IPPM). This value is measured per ANSI/IEEE C62.35 standards and reflects the maximum voltage seen downstream during a standardized surge event. The SMC3K54CAHM3_A maintains this clamping performance across its full operating temperature range (−55 °C to +175 °C).
Is SMC3K54CAHM3_A qualified for automotive applications?
Yes, SMC3K54CAHM3_A is AEC-Q101 qualified and explicitly rated for automotive use. It meets ISO 7637-2 Pulse 1, 2a, 3a, 3b and ISO 16750-2 Pulse b requirements for 12 V battery systems. Its construction-including halogen-free molding compound, matte tin plating, and JESD 201 Class 2 whisker resistance-supports reliability in harsh under-hood environments. The SMC3K54CAHM3_A datasheet confirms qualification testing per AEC-Q101 Rev D.
What is the standoff voltage (VWM) and why does it matter for SMC3K54CAHM3_A?
The standoff voltage (VWM) of SMC3K54CAHM3_A is 54 V, representing the maximum continuous reverse voltage the device can block without significant leakage. This parameter ensures compatibility with 48 V nominal systems and prevents false triggering during normal operation. At VWM, reverse leakage remains ≤1.0 μA, preserving signal integrity in high-impedance sensor interfaces. The SMC3K54CAHM3_A uses this precise VWM to balance margin above system operating voltage while retaining fast response to overvoltage events.
Does SMC3K54CAHM3_A have UL recognition?
Yes, SMC3K54CAHM3_A carries UL recognition under file number E136766 for safety standard UL 497B, covering transient protection for telecommunications and data line applications. This certification validates its dielectric strength, flammability rating (UL 94 V-0), and long-term reliability under sustained overvoltage conditions. The SMC3K54CAHM3_A is one of few TVS diodes with both AEC-Q101 and UL 497B credentials, supporting dual-use designs in automotive telematics and industrial comms.
What package type does SMC3K54CAHM3_A use and what are its mounting requirements?
SMC3K54CAHM3_A uses the SMC (DO-214AB) surface-mount package, with dimensions of 7.11 mm × 6.22 mm × 2.62 mm and a recommended FR4 PCB footprint per JEDEC MO-213. It is MSL level 1 compliant with a maximum lead-free reflow peak temperature of 260 °C. The device requires no polarity orientation due to its bidirectional design, and its matte tin-plated leads meet J-STD-002 solderability requirements. Thermal performance relies on adequate copper pour under the center pad, as specified in the SMC3K54CAHM3_A thermal characterization data.
SMC3K54CAHM3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 34.4A
- Power - Peak Pulse:
- 3000W (3kW)
- 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)
SMC3K54CAHM3_A/H FAQ
1.How can I place an order for SMC3K54CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K54CAHM3_A/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 SMC3K54CAHM3_A/H reliable?
The price and inventory of SMC3K54CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K54CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMC3K54CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K54CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K54CAHM3_A/H?
SMC3K54CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K54CAHM3_A/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 SMC3K54CAHM3_A/H?
For technical support, including SMC3K54CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K54CAHM3_A/H requirements.
6.How does Aetrix verify that SMC3K54CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMC3K54CAHM3_A/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 SMC3K54CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMC3K54CAHM3_A/H?
All SMC3K54CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K54CAHM3_A/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 SMC3K54CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMC3K54CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K54CAHM3_A/H Tags
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