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Vishay General Semiconductor - Diodes Division SMA5J30CA-M3/5A
- Part No.:
- SMA5J30CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30CA-M3/5A.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,260
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Product details
Overview
SMA5J30CA-M3/5A 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 30 V standoff voltage (VWM), 33.3–36.8 V breakdown range (VBR), 500 W peak pulse power (10/1000 µs), clamping voltage of 48.4 V at 10.3 A, and operates from –55 °C to +150 °C - used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J30CA-M3/5A datasheet, SMA5J30CA-M3/5A pinout, SMA5J30CA-M3/5A application, or SMA5J30CA-M3/5A equivalent, key selection criteria include bidirectional clamping capability, 500 W surge rating, DO-214AC thermal performance (RθJA = 80 °C/W), halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification path via HM3 variant.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its symmetrical avalanche structure enables identical clamping behavior in both polarities, with no polarity marking required on the SMA package.
Rated for 500 W peak pulse power under 10/1000 µs waveform and derated above 25 °C per Fig. 2, it delivers stable clamping up to 48.4 V at 10.3 A while maintaining <1 µA reverse leakage at 30 V - critical for low-power sensor line protection where standby current integrity matters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 33.3 V / 36.8 V - verified breakdown threshold at 1 mA test current; ensures predictable turn-on during transients. |
| VC @ IPPM | 48.4 V at 10.3 A - clamped voltage during 500 W surge event; limits downstream IC stress below 50 V absolute max. |
| PPPM | 500 W - peak pulse power handling (10/1000 µs); supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge immunity. |
| TJ Range | –55 °C to +150 °C - extended junction temperature range enables under-hood automotive and industrial control cabinet use. |
| Package | SMA (DO-214AC) - surface-mount package with 5.0 mm × 5.0 mm copper pad thermal layout; RθJA = 80 °C/W. |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak), no polarity marking for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No designated anode or cathode; terminals interchangeable - enables single-component protection on AC-coupled or floating lines. |
| Case (body) | Non-conductive encapsulation | Electrically isolated housing; no thermal or electrical connection to PCB except through soldered terminals. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for orientation-aware placement on differential or AC signal paths. |
| Halogen-free & RoHS-compliant (M3) | Meets JEDEC JESD201 Class 2 whisker resistance and IPC-1752 material declaration requirements - suitable for green manufacturing programs. |
| Low incremental surge resistance | Enables tighter clamping (VC – VBR = 15.1 V) versus competing 500 W TVS devices - reduces voltage overshoot during fast transients. |
| AEC-Q101 qualification path | Halogen-free HM3 variant available with full automotive qualification - allows drop-in upgrade for Tier 1 supply chain compliance without redesign. |
Applications
| Automotive Sensor Protection | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and temperature/pressure sensors from load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to limit transient excursions. Use Value: Withstands 500 W surges while clamping to 48.4 V - keeps protected ASIC inputs within 5.5 V absolute max ratings when referenced to local ground. |
Use Scenario: Shielding 4–20 mA current loop receivers and ADC front-ends from EFT bursts and lightning-induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage shunt device on input terminals, coordinated with series impedance and filtering. Use Value: 30 V VWM aligns with 24 V industrial supply rails; 1 µA leakage at VWM avoids loading precision current-sense circuits. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Safeguarding Ethernet PHY magnetics and PoE controller ICs against induced surges on twisted-pair cabling in outdoor access points. IC Role / Device Role / Timing Role: Secondary-level TVS placed after common-mode chokes but before transformer center taps. Use Value: Symmetrical clamping prevents DC bias shift on center-tapped windings; DO-214AC footprint fits tight spacing near RJ45 jacks. |
Use Scenario: Final-stage surge suppression on 5 V/9 V/12 V USB-C PD adapter outputs to meet UL 62368-1 transient immunity requirements. IC Role / Device Role / Timing Role: Last-line defense against conducted surges entering end equipment via power cables. Use Value: 48.4 V clamping safely protects 20 V-rated USB-PD sink ICs; M3 suffix ensures compatibility with lead-free assembly processes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J30CA-E3/5A | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3). | Acceptable for commercial-grade designs without halogen restrictions; lacks JESD201 Class 2 whisker resistance. | Select E3 for cost-sensitive non-automotive applications where halogen content is unrestricted. |
| SMA5J30CAHM3_A/I | Identical electrical specs plus full AEC-Q101 qualification; HM3 suffix denotes halogen-free + automotive grade. | Required for automotive OEM production; supports PPAP documentation and long-term supply assurance. | Choose HM3_A/I when qualifying for vehicle platforms or requiring automotive traceability and reliability data. |
Compared with SMA5J30CA-M3/5A, the E3 variant offers identical protection performance at lower cost for non-automotive use, while the HM3_A/I adds AEC-Q101 validation and extended lifetime data - enabling direct substitution only when qualification status matches program requirements.
Availability
SMA5J30CA-M3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and telecom line protection requiring stable component supply with halogen-free compliance and surface-mount scalability.
Supply support for SMA5J30CA-M3/5A 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, 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 environments - targeting automotive, industrial, and telecom applications where 500 W surge handling and DO-214AC thermal efficiency are critical.
FAQ
What is the clamping voltage of SMA5J30CA-M3/5A at its rated peak pulse current?
The SMA5J30CA-M3/5A clamps to 48.4 V at its peak pulse current of 10.3 A under a 10/1000 µs waveform. This value is measured per standard test conditions in the Vishay datasheet (Doc. #88875) and reflects the maximum voltage seen by downstream circuitry during a full 500 W surge event - essential for verifying IC overvoltage margins.
Is SMA5J30CA-M3/5A suitable for automotive applications?
SMA5J30CA-M3/5A itself is commercial-grade and halogen-free (M3), but not AEC-Q101 qualified. However, the pin-compatible SMA5J30CAHM3_A/I variant is fully AEC-Q101 qualified. For automotive use, specify the HM3 version; SMA5J30CA-M3/5A remains appropriate for non-qualified subsystems like infotainment power rails where full qualification isn't mandated.
Does SMA5J30CA-M3/5A have polarity markings on the package?
No - SMA5J30CA-M3/5A is a bidirectional TVS diode and carries no polarity marking on the SMA (DO-214AC) package body. The device functions identically regardless of terminal orientation, simplifying automated placement and eliminating orientation-related assembly errors in differential or AC-coupled circuits.
What is the thermal resistance of SMA5J30CA-M3/5A, and how does it affect layout?
SMA5J30CA-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain this rating, PCB layout must replicate the specified pad area and avoid excessive trace narrowing - critical for sustaining repeated surge duty cycles without thermal runaway.
How does the M3 suffix differ from E3 in SMA5J30CA-M3/5A?
The M3 suffix indicates halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance, while E3 is RoHS-compliant but contains halogens and lacks whisker testing. Both share identical electrical specs and packaging, but M3 is required for green manufacturing programs and certain automotive Tier 1 specifications where halogen content is restricted.
SMA5J30CA-M3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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)
SMA5J30CA-M3/5A FAQ
1.How can I place an order for SMA5J30CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30CA-M3/5A 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 SMA5J30CA-M3/5A reliable?
The price and inventory of SMA5J30CA-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J30CA-M3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J30CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30CA-M3/5A?
SMA5J30CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30CA-M3/5A 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 SMA5J30CA-M3/5A?
For technical support, including SMA5J30CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30CA-M3/5A requirements.
6.How does Aetrix verify that SMA5J30CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J30CA-M3/5A 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 SMA5J30CA-M3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J30CA-M3/5A?
All SMA5J30CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30CA-M3/5A, 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 SMA5J30CA-M3/5A part is unused and in its original packaging.
Return procedure for SMA5J30CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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