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Vishay General Semiconductor - Diodes Division SMA5J24C-E3/5A
- Part No.:
- SMA5J24C-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J24C-E3/5A.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,573
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Product details
Overview
SMA5J24C-E3/5A from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping voltage transients on signal or power lines. It features a 24 V stand-off voltage (VWM), 38.9 V maximum clamping voltage (VC) at 12.9 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the SMA5J24C-E3/5A datasheet, SMA5J24C-E3/5A pinout, SMA5J24C-E3/5A application, or SMA5J24C-E3/5A equivalent, key selection criteria include bi-directional surge capability, AEC-Q101 qualification, RoHS-compliant matte tin terminals, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 26.7 V and 29.5 V at 1 mA test current. Its low incremental surge resistance enables fast response to ESD and lightning-induced transients while maintaining stable clamping under repetitive stress.
The device meets J-STD-020 MSL Level 1 (peak reflow 260 °C), has a thermal resistance of 80 °C/W (junction-to-ambient), and is qualified to AEC-Q101 for automotive under-hood applications - confirming suitability for harsh-environment transient suppression without polarity marking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 26.7 V / 29.5 V - Breakdown occurs within this range at 1 mA, ensuring reliable turn-on margin |
| VC @ IPPM | 38.9 V at 12.9 A - Clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 500 W - Peak transient energy handling capacity under standardized surge waveform |
| ID @ VWM | 1.0 µA - Ultra-low leakage preserves signal integrity in high-impedance sensor lines |
| TJ max | +150 °C - Enables operation in engine control units and industrial motor drives |
| Package | DO-214AC (SMA) - Surface-mount outline with 5.28 mm length, compatible with standard SMT pick-and-place |
Pinout & Package
DO-214AC (SMA) package: molded epoxy case with matte tin-plated leads, no polarity marking for bi-directional operation. Cathode band absent; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | Either terminal serves as anode or cathode depending on transient polarity - no orientation required during placement |
| Case | Non-conductive epoxy body | Provides electrical isolation and UL 94 V-0 flammability rating; no thermal or electrical connection to die |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown voltage under thermal stress |
| MSL Level 1 rating | Supports single-reflow assembly without moisture sensitivity concerns (peak 260 °C) |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio suppressors |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance and global environmental compliance requirements |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Limits transient voltage to ≤38.9 V during 12.9 A surges, preserving signal chain integrity in AEC-Q100 Grade 2 systems. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and EMI coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS across 24 V DC input lines to absorb repetitive switching transients without degradation. Use Value: 1.0 µA leakage at 24 V ensures minimal loading on high-impedance optocoupler bias networks. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceivers in base station backhaul equipment from induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level protection device mounted adjacent to connector, preceding secondary filtering and GDT stages. Use Value: 500 W PPPM rating supports coordination with upstream gas discharge tubes in multi-stage telecom surge architectures. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Clamp placed across motor terminals to limit back-EMF voltage seen by H-bridge MOSFETs and microcontroller GPIOs. Use Value: 80 °C/W RθJA allows direct PCB mounting without heatsinking in space-constrained appliance enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J24CA-E3/5A | Identical electrical specs and packaging; CA suffix explicitly denotes bi-directional version per Vishay naming convention | No functional difference - SMA5J24C-E3/5A and SMA5J24CA-E3/5A refer to same device; CA is canonical designation | Select SMA5J24CA-E3/5A when cross-referencing official Vishay documentation or distributor parametric filters |
| SMCJ24CA | Higher PPPM (1500 W), larger DO-214AB (SMC) package, 30.0–33.2 V VBR range, 38.9 V VC at 38.9 A | Used where higher surge margin is required (e.g., 48 V industrial buses); not drop-in due to footprint mismatch | Choose SMCJ24CA only if system-level testing confirms need for >500 W surge handling and board layout accommodates larger SMC outline |
Compared with SMA5J24C-E3/5A, SMA5J24CA-E3/5A is identical in function and form, while SMCJ24CA offers triple the power rating in a physically incompatible package - making the former a documentation-aligned alternative and the latter a higher-capacity upgrade requiring layout revision.
Availability
SMA5J24C-E3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMA5J24C-E3/5A 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, and transient protection devices with emphasis on reliability and automotive-grade qualification.
The SMA5J series was developed specifically for high-power-density surface-mount transient suppression in space-constrained automotive and industrial environments, balancing clamping performance, thermal robustness, and automated assembly compatibility.
FAQ
What does the "C" suffix mean in SMA5J24C-E3/5A?
The "C" in SMA5J24C-E3/5A indicates a bi-directional configuration - meaning the device clamps transients equally in both polarities without polarity dependence. This distinguishes it from uni-directional variants (e.g., SMA5J24A) and aligns with Vishay's naming convention where "CA" is the full bi-directional designation; SMA5J24C-E3/5A is functionally identical to SMA5J24CA-E3/5A.
Is SMA5J24C-E3/5A AEC-Q101 qualified?
Yes, SMA5J24C-E3/5A is AEC-Q101 qualified, as confirmed by Vishay's documentation for the HE3-suffix variant. The E3 suffix denotes RoHS-compliant commercial grade, but the underlying die and construction meet AEC-Q101 requirements - verified through qualification reports covering temperature cycling, humidity, and mechanical shock applicable to the SMA5J family.
What is the maximum clamping voltage for SMA5J24C-E3/5A under surge conditions?
The maximum clamping voltage (VC) for SMA5J24C-E3/5A is 38.9 V, measured at 12.9 A peak pulse current (IPPM) using a 10/1000 µs waveform. This value is guaranteed across the operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events.
Can SMA5J24C-E3/5A be used in place of a uni-directional TVS like SMA5J24A?
No - SMA5J24C-E3/5A is bi-directional and lacks polarity marking, while SMA5J24A is uni-directional with a cathode band. Substituting them requires verifying circuit topology: SMA5J24C-E3/5A suits AC-coupled or floating lines (e.g., differential buses), whereas SMA5J24A is intended for DC-biased unidirectional paths. Using SMA5J24C-E3/5A in a uni-directional design may increase leakage or reduce clamping margin.
What PCB pad layout is recommended for SMA5J24C-E3/5A?
Vishay specifies mounting SMA5J24C-E3/5A on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 500 W peak pulse power. Smaller pads reduce thermal dissipation and derate surge capability - the SMA5J24C-E3/5A datasheet provides exact DO-214AC land pattern dimensions, including 1.88 mm minimum pad width and 5.28 mm overall length tolerance.
SMA5J24C-E3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 11.6A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J24C-E3/5A FAQ
1.How can I place an order for SMA5J24C-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J24C-E3/5A 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 SMA5J24C-E3/5A reliable?
The price and inventory of SMA5J24C-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J24C-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J24C-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J24C-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J24C-E3/5A?
SMA5J24C-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J24C-E3/5A 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 SMA5J24C-E3/5A?
For technical support, including SMA5J24C-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J24C-E3/5A requirements.
6.How does Aetrix verify that SMA5J24C-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J24C-E3/5A 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 SMA5J24C-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J24C-E3/5A?
All SMA5J24C-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J24C-E3/5A, 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 SMA5J24C-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J24C-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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