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Vishay General Semiconductor - Diodes Division SMA5J24CA-M3/61
- Part No.:
- SMA5J24CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J24CA-M3/61.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J24CA-M3/61 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 24 V standoff 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 - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J24CA-M3/61 datasheet, SMA5J24CA-M3/61 pinout, SMA5J24CA-M3/61 application, or SMA5J24CA-M3/61 equivalent, key selection criteria include bidirectional clamping capability, halogen-free RoHS compliance (M3 suffix), AEC-Q101 qualification readiness, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports consistent clamping performance under repetitive surge stress.
The device is rated for junction temperatures from –55 °C to +150 °C and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak. Its thermal resistance (RθJA = 80 °C/W) reflects optimized heat dissipation when mounted on recommended pad layout, supporting reliable operation in space-constrained automotive and industrial PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR min/max | 26.7 V / 29.5 V - Breakdown voltage range at 1 mA test current; ensures predictable turn-on threshold across production lot. |
| VC @ IPPM | 38.9 V - Clamping voltage at 12.9 A peak pulse current; limits transient-induced overvoltage seen by downstream ICs. |
| PPPM | 500 W - Peak pulse power handling with 10/1000 µs waveform; enables robust protection against IEC 61000-4-5 surge events. |
| IPPM | 12.9 A - Peak pulse current corresponding to VC; directly determines energy absorption capacity per transient event. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments and sealed industrial enclosures. |
| Package | SMA (DO-214AC) - Surface-mount package with 5.28 mm × 4.50 mm footprint and 2.29 mm height; compatible with standard pick-and-place equipment. |
Pinout & Package
Package: SMA (DO-214AC) - molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, 260 °C reflow compatible. Bidirectional construction means no polarity marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve identical roles; bidirectional clamping occurs regardless of voltage polarity applied across the device. |
| Case (body) | Thermal and mechanical interface | No electrical connection; provides mechanical anchoring and contributes to thermal dissipation via PCB copper pads. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management. |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial end-equipment without compromising surge robustness. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on protected ICs during surge events, improving system-level reliability. |
| AEC-Q101 qualification ready | Base P/NHM3_X variant available for automotive applications; supports qualification path for safety-critical modules. |
| Fast response time (<1 ps) | Clamps transients before sensitive downstream components experience damaging overvoltage, preserving signal integrity. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role: Primary transient shunt element placed at connector entry point before signal conditioning circuitry. Use Value: Limits induced surges to ≤38.9 V, preventing latch-up or gate oxide damage in 3.3 V/5 V microcontrollers and ADCs. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring surges. IC Role / Device Role: First-line overvoltage clamp on terminal block side, upstream of precision op-amps and isolators. Use Value: Withstands repeated 500 W surges while maintaining <1.0 µA leakage at 24 V, ensuring measurement accuracy and long-term stability. |
| Telecom Line Card Protection | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from lightning-induced surges on twisted-pair cabling in outdoor telecom cabinets. IC Role / Device Role: Bidirectional TVS placed across differential pairs (e.g., TX+/TX−) to suppress common-mode transients. Use Value: Symmetric clamping ensures balanced suppression without skewing differential signaling integrity up to 100 MHz. |
Use Scenario: Secondary-side overvoltage protection on 5 V/9 V/12 V USB-C and wall adapter outputs exposed to accidental short-circuit recovery spikes. IC Role / Device Role: Clamp device between VOUT and GND, triggered only during abnormal overvoltage conditions. Use Value: Fast response and low VC prevent downstream USB PD controllers or charging ICs from entering fault shutdown unnecessarily. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J24CA-E3/61 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3). | Preferred for commercial-grade applications where halogen-free requirement is not mandated. | Select E3 for cost-sensitive non-automotive designs; M3 required for automotive Tier 1 supply chain compliance. |
| SMA6J24CA-M3/61 | 600 W PPPM, same VWM/VC, larger SMA package variant (DO-214AC with enhanced thermal pad). | Used where higher surge repetition rate or extended thermal margin is needed in high-ambient environments. | Choose SMA6J24CA-M3/61 when system-level testing reveals marginal margin with 500 W rating under worst-case duty cycle. |
Compared with SMA5J24CA-M3/61, the E3 variant offers identical protection performance at lower material cost but lacks halogen-free certification, while the SMA6J24CA-M3/61 delivers 20 % higher surge power handling in a mechanically compatible yet thermally upgraded package - enabling longer lifetime in cyclic surge environments.
Availability
SMA5J24CA-M3/61 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, and telecom line card surge immunity requiring stable component supply and full traceability.
Supply support for SMA5J24CA-M3/61 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, power density, and automotive-grade qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained applications, targeting automotive, industrial, and telecom systems where fast, repeatable clamping and AEC-Q101 readiness are critical design requirements.
FAQ
What is the clamping voltage of the SMA5J24CA-M3/61 under maximum rated surge current?
The SMA5J24CA-M3/61 exhibits a maximum clamping voltage (VC) of 38.9 V when subjected to its rated peak pulse current of 12.9 A using the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C on the recommended 5.0 mm × 5.0 mm copper pad layout and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J24CA-M3/61 maintains this clamping performance consistently across its qualified operating temperature range.
Is the SMA5J24CA-M3/61 suitable for automotive applications?
Yes - the SMA5J24CA-M3/61 is halogen-free and RoHS-compliant, and its base part number SMA5J24CA is qualified to AEC-Q101 when ordered with HM3 suffix (e.g., SMA5J24CAHM3_A/H). While the M3/61 variant itself is commercial-grade, it shares identical electrical and thermal characteristics with the automotive-qualified version and is widely used in pre-qualification stages and non-safety-critical automotive subsystems. The SMA5J24CA-M3/61 meets MSL Level 1 and supports lead-free reflow up to 260 °C.
How does the bidirectional nature of the SMA5J24CA-M3/61 affect its placement on the PCB?
The SMA5J24CA-M3/61 has no polarity marking and functions identically regardless of orientation, simplifying PCB layout and eliminating risk of reverse installation. This bidirectional symmetry allows placement across AC-coupled lines, transformer-isolated interfaces, or floating grounds without directional constraints. Unlike unidirectional TVS diodes, the SMA5J24CA-M3/61 requires no cathode band alignment during automated assembly - reducing placement error rates and supporting higher throughput in SMT lines.
What is the maximum operating temperature for the SMA5J24CA-M3/61?
The SMA5J24CA-M3/61 is rated for an operating junction temperature range of –55 °C to +150 °C, with storage temperature matching this span. Its thermal resistance (RθJA = 80 °C/W) assumes mounting on the specified minimum pad layout; derating curves in the datasheet show that at 100 °C ambient, the device retains >70 % of its 500 W surge capability. This makes the SMA5J24CA-M3/61 suitable for under-hood automotive locations and enclosed industrial drives where ambient temperatures exceed 85 °C.
Does the SMA5J24CA-M3/61 require additional series impedance for optimal protection?
Yes - like all TVS diodes, the SMA5J24CA-M3/61 performs best when paired with appropriate series impedance (e.g., ferrite bead, resistor, or trace inductance) to limit di/dt and coordinate with downstream protection elements. Without such impedance, extremely fast transients may cause localized heating or induce ringing. The SMA5J24CA-M3/61's low clamping voltage and fast response make it ideal for use behind a 1–10 Ω current-limiting resistor or 600 Ω ferrite bead in signal-line applications, ensuring effective energy diversion without overstressing the device.
SMA5J24CA-M3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 12.9A
- 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)
SMA5J24CA-M3/61 FAQ
1.How can I place an order for SMA5J24CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J24CA-M3/61 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 SMA5J24CA-M3/61 reliable?
The price and inventory of SMA5J24CA-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J24CA-M3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J24CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J24CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J24CA-M3/61?
SMA5J24CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J24CA-M3/61 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 SMA5J24CA-M3/61?
For technical support, including SMA5J24CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J24CA-M3/61 requirements.
6.How does Aetrix verify that SMA5J24CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J24CA-M3/61 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 SMA5J24CA-M3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J24CA-M3/61?
All SMA5J24CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J24CA-M3/61, 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 SMA5J24CA-M3/61 part is unused and in its original packaging.
Return procedure for SMA5J24CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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