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Vishay General Semiconductor - Diodes Division SMC5K48CA-M3/H
- Part No.:
- SMC5K48CA-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K48CA-M3/H.pdf
- Description:
- TVS DIODE 48VWM 77.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,188
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Product details
Overview
SMC5K48CA-M3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It delivers 5000 W peak pulse power (10/1000 μs), clamps at 77.4 V under 64.6 A surge, and operates across -55 °C to +175 °C junction temperature - used in automotive ECUs, industrial sensor interfaces, and telecom power rails.
For engineers reviewing the SMC5K48CA-M3/H datasheet, SMC5K48CA-M3/H pinout, SMC5K48CA-M3/H application, or SMC5K48CA-M3/H equivalent, key selection criteria include its 48 V standoff voltage, bidirectional polarity, AEC-Q101 qualification, UL 497B safety recognition, and compatibility with high-energy 8/20 μs lightning surges up to 400 A.
Technical Context
This TVS diode uses silicon avalanche technology to provide fast, repeatable clamping of transient overvoltages. Its bidirectional structure enables symmetrical protection without polarity constraints, and its low incremental surge resistance ensures minimal voltage overshoot during high-current events like inductive switching or ESD.
The device meets J-STD-020 MSL Level 1 and passes JESD201 Class 2 whisker testing. Thermal performance is characterized by RthJA = 90 °C/W and RthJM = 4.0 °C/W, supporting reliable operation in thermally constrained PCB layouts with standard FR4 mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 48 V - maximum continuous reverse operating voltage before clamping begins |
| Breakdown Voltage (VBR) | 53.3–58.9 V at 1 mA - defined threshold where avalanche conduction initiates |
| Clamping Voltage (VC) | 77.4 V at 64.6 A (10/1000 μs) - peak voltage seen by protected circuit during rated surge |
| Peak Pulse Power (PPPM) | 5000 W (10/1000 μs) - energy-handling capability for standard lightning surge waveforms |
| Peak Pulse Current (IPPM) | 64.6 A (10/1000 μs); 400 A (8/20 μs) - maximum transient current it can safely divert |
| Operating Temperature | -55 °C to +175 °C - supports under-hood automotive and industrial environments |
| Qualifications | AEC-Q101 qualified; UL 497B recognized (E136766); RoHS-compliant, halogen-free |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no cathode band marking. Matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (End 1) | Transient current entry (bidirectional) | Either terminal accepts surge current; symmetric conduction eliminates polarity dependency |
| Cathode (End 2) | Transient current exit (bidirectional) | Paired with Anode to form low-impedance shunt path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or unidirectional rails without polarity concerns |
| 5000 W peak pulse power (10/1000 μs) | Supports robust immunity against IEC 61000-4-5 level 4 surges in industrial power inputs |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| UL 497B recognition (E136766) | Meets safety requirements for telecom and industrial interface protection circuits |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients like ESD or relay bounce |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V supply and CAN bus lines in engine bay ECUs exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: TVS clamping element placed at power input and communication interface entry points. Use Value: Withstands 400 A (8/20 μs) surges and operates up to +175 °C, ensuring reliability in under-hood thermal environments. |
Use Scenario: Safeguarding analog output (4–20 mA) and digital I/O lines of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Bidirectional shunt protector between signal line and ground, responding in <1 ps. Use Value: 77.4 V clamping at 64.6 A prevents damage to precision ADCs and microcontroller GPIOs during field wiring faults. |
| Telecom Power Input Stage | Consumer Appliance Motor Drive Protection |
Use Scenario: Secondary-side transient suppression on 48 V DC power inputs of base station RF modules and PoE-powered equipment. IC Role / Device Role / Timing Role: Primary overvoltage clamp after DC/DC converter output, before sensitive RF ICs. Use Value: UL 497B recognition and 5000 W rating meet IEC 61000-4-5 compliance requirements for telecom infrastructure. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp back-EMF spikes. Use Value: Bidirectional operation handles both forward and reverse polarity transients; 48 V VWM matches common 24–48 V appliance bus voltages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ48CA | Same SMC package, 48 V VWM, but lower PPPM = 400 W (10/1000 μs); clamps at 77.4 V @ 51.6 A | Suitable for lower-energy transients (e.g., ESD-only); not rated for 8/20 μs lightning surges | Select when cost sensitivity outweighs surge energy requirement and AEC-Q101 is not mandatory |
| ON Semiconductor 1.5KE48CA | Through-hole DO-201 package; same VWM/VC, but PPPM = 1500 W; no AEC-Q101 or UL recognition | Requires PCB real estate for axial lead mounting; limited to non-automotive, non-safety-critical designs | Choose only if legacy through-hole assembly is required and thermal derating allows |
Compared with SMC5K48CA-M3/H, SMAJ48CA offers lower surge handling and no automotive qualification, while 1.5KE48CA lacks surface-mount compatibility and safety certifications - making SMC5K48CA-M3/H the sole option meeting AEC-Q101, UL 497B, and 5000 W requirements in SMC footprint.
Availability
SMC5K48CA-M3/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom power input protection requiring stable component supply and long-term lifecycle support.
Supply support for SMC5K48CA-M3/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 and automotive-grade qualification.
The SMC5KxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems demanding AEC-Q101 and UL safety compliance.
FAQ
What is the standoff voltage rating of the SMC5K48CA-M3/H?
The SMC5K48CA-M3/H has a standoff voltage (VWM) of 48 V, meaning it remains non-conductive up to this reverse voltage under normal operation. This value is confirmed in the Electrical Characteristics table of Vishay document 87024, where SMC5K48CA is explicitly listed with VWM = 48 V at 25 °C.
Is the SMC5K48CA-M3/H bidirectional or unidirectional?
The SMC5K48CA-M3/H is a bidirectional TVS diode, as indicated by the "CA" suffix in its part number and confirmed in the Primary Characteristics table (Polarity = Bidirectional). It provides symmetrical clamping for both positive and negative transients without requiring orientation during placement.
Does the SMC5K48CA-M3/H meet automotive qualification standards?
Yes, the SMC5K48CA-M3/H is AEC-Q101 qualified, as stated in the Features section and verified in the Ratings and Characteristics Curves section (Note (1)). This qualification validates its suitability for automotive applications including engine control, body electronics, and ADAS subsystems.
What is the maximum clamping voltage of the SMC5K48CA-M3/H under surge conditions?
The SMC5K48CA-M3/H clamps to a maximum of 77.4 V at 64.6 A for a 10/1000 μs waveform, and to 100 V at 400 A for an 8/20 μs waveform. These values are specified in the Electrical Characteristics table for SMC5K48CA in Vishay document 87024.
What package type does the SMC5K48CA-M3/H use?
The SMC5K48CA-M3/H uses the SMC (DO-214AB) surface-mount package, as documented in the Mechanical Data and Primary Characteristics sections. Its dimensions, thermal resistance (RthJA = 90 °C/W), and mounting pad layout are fully defined in the Package Outline Dimensions diagram.
SMC5K48CA-M3/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):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 77.4V
- Current - Peak Pulse (10/1000µs):
- 64.6A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC5K48CA-M3/H FAQ
1.How can I place an order for SMC5K48CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K48CA-M3/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 SMC5K48CA-M3/H reliable?
The price and inventory of SMC5K48CA-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC5K48CA-M3/H is usually 5 days.
3.What payment methods are accepted for SMC5K48CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K48CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K48CA-M3/H?
SMC5K48CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K48CA-M3/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 SMC5K48CA-M3/H?
For technical support, including SMC5K48CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K48CA-M3/H requirements.
6.How does Aetrix verify that SMC5K48CA-M3/H is sourced from the original manufacturer or authorized distributors?
All SMC5K48CA-M3/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 SMC5K48CA-M3/H meets industry standards.
7.What is the process for return or replacement of SMC5K48CA-M3/H?
All SMC5K48CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K48CA-M3/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 SMC5K48CA-M3/H part is unused and in its original packaging.
Return procedure for SMC5K48CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K48CA-M3/H Tags
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