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Vishay General Semiconductor - Diodes Division SMC3K54CAHM3/57
- Part No.:
- SMC3K54CAHM3/57
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K54CAHM3/57.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,243
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Product details
Overview
SMC3K54CAHM3/57 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMC (DO-214AB) package, rated for 3000 W peak pulse power (10/1000 μs), with a breakdown voltage of 60.0–66.3 V, stand-off voltage of 54 V, and clamping voltage of 87.1 V at 34.4 A. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMC3K54CAHM3/57 datasheet, SMC3K54CAHM3/57 pinout, SMC3K54CAHM3/57 application, or SMC3K54CAHM3/57 equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, UL 497B recognition, and halogen-free RoHS-compliant construction.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by transient overvoltage events such as inductive load switching or ESD. Its low incremental surge resistance and fast response time ensure effective suppression before downstream components are damaged.
The SMC3K54CAHM3/57 is designed for unidirectional PCB mounting only - not recommended for bottom-side wave soldering - and meets MSL level 1 per J-STD-020 with 260 °C lead-free reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000 W (10/1000 μs waveform); sustains high-energy transients without failure |
| Breakdown Voltage VBR | 60.0–66.3 V at 1.0 mA test current; defines reliable conduction onset threshold |
| Stand-off Voltage VWM | 54 V maximum reverse working voltage; ensures no conduction during normal operation |
| Clamping Voltage VC | 87.1 V at 34.4 A peak pulse current; limits voltage seen by protected circuitry |
| Junction Temperature Range | −55 °C to +150 °C; supports operation in under-hood automotive and industrial environments |
| Qualification & Compliance | AEC-Q101 qualified; UL 497B recognized (E136766); RoHS/halogen-free; MSL level 1 |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, 0.260" × 0.305" outline, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked side) | Anode/Cathode terminal pair | Bidirectional device: no functional polarity marking; terminals interchangeable in layout |
| Anode (unmarked side) | Anode/Cathode terminal pair | Same physical structure as cathode; symmetric conduction behavior for AC transients |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional polarity | Enables single-device protection of AC-coupled or differential signal lines without polarity constraints |
| 3000 W peak pulse rating | Handles high-energy surges common in automotive load-dump and industrial motor drive environments |
| AEC-Q101 qualification | Validated reliability for automotive electronics including engine control, body modules, and ADAS sensors |
| Low clamping ratio (VC/VWM ≈ 1.61) | Minimizes overvoltage stress on protected ICs while maintaining margin above operating rail |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements for industrial and automotive supply chains |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protection of 12 V/24 V power rails against load dump and alternator transients in junction boxes and battery management units. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed upstream of DC-DC converters and microcontrollers. Use Value: Clamps transients to ≤87.1 V, preventing latch-up or permanent damage to 5 V/3.3 V logic supplies downstream. |
Use Scenario: Guarding gate drivers and feedback signal lines in variable-frequency drives exposed to IGBT switching noise. IC Role / Device Role / Timing Role: Fast-response transient suppressor across isolated analog inputs and PWM control paths. Use Value: Limits induced spikes to safe levels within 1 ns response time, preserving signal integrity and timing accuracy. |
| Automotive Sensor Interface | Telecom Power Input Stage |
Use Scenario: Shielding LIN/CAN node transceivers and MEMS sensor signal conditioning circuits from ESD and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional clamp on differential bus lines and analog sensor outputs. Use Value: Maintains signal fidelity below 54 V operating range while suppressing ±15 kV contact ESD per IEC 61000-4-2. |
Use Scenario: Front-end surge protection on 48 V telecom power inputs subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-level TVS in series with fuse and MOV-based secondary protection. Use Value: Absorbs 3000 W pulses without degradation, enabling robust Class III surge immunity in base station power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMC3K54CAHM3_A/57 | Same electrical specs; updated suffix denotes revised internal manufacturing process and traceability controls | No functional change; fully compatible in legacy designs requiring AEC-Q101 qualification | Select when new production requires latest Vishay revision control and enhanced lot traceability |
| SMAJ54A-H | Lower 400 W rating; SMA package (smaller footprint, lower thermal mass); unidirectional only | Not suitable for bidirectional AC signal lines or automotive load-dump where 3000 W is required | Consider only for space-constrained, low-energy consumer applications with unidirectional bias |
Compared with SMC3K54CAHM3/57, the SMC3K54CAHM3_A/57 offers identical performance with improved process consistency, while SMAJ54A-H trades significant pulse power and polarity flexibility for reduced size - making it unsuitable as a drop-in replacement in automotive or industrial surge-critical roles.
Availability
SMC3K54CAHM3/57 is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive control, and telecom power input stage applications requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SMC3K54CAHM3/57 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 and automotive-grade qualification.
The SMC3KxxCAHM3 series was developed specifically for high-energy transient suppression in AEC-Q101-compliant automotive and harsh-environment industrial systems, prioritizing robust clamping, thermal stability, and long-term parametric consistency.
FAQ
What does the "HM3" suffix mean in SMC3K54CAHM3/57?
The HM3 suffix in SMC3K54CAHM3/57 indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD 201 class 2 whisker resistance. It distinguishes this grade from commercial M3 variants and confirms suitability for automotive electronics per Vishay's qualification protocol.
Is SMC3K54CAHM3/57 suitable for bidirectional signal line protection?
Yes, SMC3K54CAHM3/57 is explicitly specified as bidirectional only, with symmetrical clamping behavior. Its design enables protection of differential buses like LIN or RS-485 without polarity concerns, unlike unidirectional TVS diodes that require careful orientation.
What is the maximum clamping voltage of SMC3K54CAHM3/57 under surge conditions?
The maximum clamping voltage of SMC3K54CAHM3/57 is 87.1 V at 34.4 A peak pulse current (10/1000 μs waveform). This value is measured and guaranteed per Vishay Document Number 89433, ensuring predictable voltage limiting during transient events.
Does SMC3K54CAHM3/57 require derating at elevated ambient temperatures?
Yes, SMC3K54CAHM3/57 must be derated above TA = 25 °C per Figure 2 in Vishay Document 89433. At 100 °C ambient, peak pulse power drops to approximately 50 % of the 3000 W rating, requiring thermal design consideration in enclosed or high-temperature enclosures.
Can SMC3K54CAHM3/57 be used in place of older SMC3K54CA-M3/57 parts?
Yes, SMC3K54CAHM3/57 is a direct replacement for SMC3K54CA-M3/57 in all applications, with identical electrical parameters and mechanical dimensions. The HM3 version adds AEC-Q101 qualification and enhanced process controls but maintains full form-fit-function compatibility.
SMC3K54CAHM3/57 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMC3K54CAHM3/57 FAQ
1.How can I place an order for SMC3K54CAHM3/57 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K54CAHM3/57 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 SMC3K54CAHM3/57 reliable?
The price and inventory of SMC3K54CAHM3/57 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K54CAHM3/57 is usually 5 days.
3.What payment methods are accepted for SMC3K54CAHM3/57?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K54CAHM3/57 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K54CAHM3/57?
SMC3K54CAHM3/57 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K54CAHM3/57 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 SMC3K54CAHM3/57?
For technical support, including SMC3K54CAHM3/57 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K54CAHM3/57 requirements.
6.How does Aetrix verify that SMC3K54CAHM3/57 is sourced from the original manufacturer or authorized distributors?
All SMC3K54CAHM3/57 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 SMC3K54CAHM3/57 meets industry standards.
7.What is the process for return or replacement of SMC3K54CAHM3/57?
All SMC3K54CAHM3/57 units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K54CAHM3/57, 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 SMC3K54CAHM3/57 part is unused and in its original packaging.
Return procedure for SMC3K54CAHM3/57:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K54CAHM3/57 Tags
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