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Vishay General Semiconductor - Diodes Division SMA5J30CA-M3/61
- Part No.:
- SMA5J30CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30CA-M3/61.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,042
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Product details
Overview
SMA5J30CA-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 30 V standoff voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 48.4 V clamping voltage at 10.3 A peak pulse current, and 500 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J30CA-M3/61 datasheet, SMA5J30CA-M3/61 pinout, SMA5J30CA-M3/61 application, or SMA5J30CA-M3/61 equivalent, key selection criteria include bidirectional clamping capability, MSL Level 1 moisture sensitivity, halogen-free RoHS compliance, and AEC-Q101 qualification readiness via HM3 suffix variants.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative transients without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance supports consistent clamping under repetitive surge stress.
The device is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 25 °C/W (junction-to-lead), facilitating reliable power dissipation when mounted on 5.0 mm × 5.0 mm copper pads. It meets JESD201 Class 2 whisker resistance and is qualified per J-STD-020 for lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 33.3 V / 36.8 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 48.4 V - Clamped voltage across terminals at 10.3 A peak pulse current, limiting downstream stress |
| PPPM | 500 W - Peak pulse power handling with 10/1000 μs waveform, critical for lightning/inductive surge immunity |
| ID @ VWM | <1.0 μA - Reverse leakage at standoff voltage, ensuring minimal standby power loss and signal integrity |
| TJ max. | +150 °C - Maximum junction temperature, supporting operation in under-hood automotive and industrial environments |
| Package | SMA (DO-214AC) - Surface-mount package with 2-terminal configuration, optimized for automated placement and thermal relief |
Pinout & Package
Two-terminal SMA (DO-214AC) package with no polarity marking for bidirectional operation; terminals are matte tin-plated and solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Surge conduction path | Identical bidirectional terminals - either terminal serves as anode or cathode depending on transient polarity |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides mechanical anchoring and heat transfer to 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 |
| Low profile SMA package | Reduces board space and height constraints in compact modules such as ADAS camera ECUs and motor control drives |
| Glass passivated junction | Ensures long-term stability of VBR and leakage performance across temperature and humidity stress conditions |
| MSL Level 1 rating | Permits unlimited floor life and standard reflow without baking, simplifying SMT manufacturing flow |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial end-equipment without compromising surge robustness |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Limits voltage to ≤48.4 V during 10.3 A surges, preserving ADC input stages and microcontroller GPIOs rated for 3.3 V or 5 V operation. | Use Scenario: Safeguarding RS-485, 4–20 mA loop, or digital input terminals in PLCs and factory automation controllers. IC Role / Device Role / Timing Role: Primary line-level transient suppressor on field-side traces, coordinated with upstream fusing and filtering. Use Value: Withstands repeated 500 W surges per IEC 61000-4-5 (Level 3), reducing field failure rates in electrically noisy plant environments. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters and USB PD chargers against capacitor discharge or feedback faults. IC Role / Device Role / Timing Role: Fast-response clamp across DC output rails to prevent damage to downstream DC-DC converters and load switches. Use Value: Sub-1 ns response time and 48.4 V clamping ensure safe shutdown of 24 V or 36 V output stages before overvoltage thresholds are breached. | Use Scenario: Surge protection on telephone line interface circuits (e.g., DSL, POTS) exposed to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Bidirectional suppressor bridging tip/ring lines to ground, absorbing common-mode energy without disrupting DC bias. Use Value: Symmetrical VBR and VC enable balanced suppression on both conductors, maintaining signal integrity for voice and data transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J30CA-E3/61 | RoHS-compliant but not halogen-free; same electrical specs and package | No difference in protection performance; differs only in material compliance (halogen content) | Select E3 for commercial-grade cost-sensitive designs where halogen-free is not mandated |
| SMA5J30CAHM3_A/H | AEC-Q101 qualified; identical VWM/VBR/VC/PPPM, same SMA package | Required for automotive production programs needing full qualification evidence and extended temperature validation | Choose HM3_A/H for automotive Tier-1 BOMs requiring PPAP documentation and lifetime reliability validation |
Compared with SMA5J30CA-M3/61, the E3 variant offers identical surge performance at lower material cost but lacks halogen-free certification, while the HM3_A/H adds AEC-Q101 qualification for automotive use - neither is pin-compatible in the sense of drop-in replacement without review of compliance requirements.
Availability
SMA5J30CA-M3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom line interface designs requiring stable component supply, halogen-free compliance, and surface-mount surge resilience.
Supply support for SMA5J30CA-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 and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, high-reliability systems - targeting automotive, industrial, and telecom applications where fast clamping and repeatable surge endurance are mandatory.
FAQ
What is the clamping voltage of the SMA5J30CA-M3/61 under peak pulse conditions?
The SMA5J30CA-M3/61 has a maximum clamping voltage (VC) of 48.4 V at 10.3 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J30CA-M3/61 maintains this clamping performance consistently across its operating temperature range, making it suitable for demanding environments like automotive engine compartments.
Is the SMA5J30CA-M3/61 suitable for automotive applications?
The SMA5J30CA-M3/61 itself is not AEC-Q101 qualified, but it shares identical electrical and mechanical specifications with the AEC-Q101-qualified variant SMA5J30CAHM3_A/H. As a halogen-free, RoHS-compliant device rated for -55 °C to +150 °C operation, the SMA5J30CA-M3/61 is commonly used in automotive prototype and non-safety-critical subsystems. For production automotive programs, the HM3_A/H version of SMA5J30CA-M3/61 must be specified to meet qualification requirements.
How does the bidirectional design of the SMA5J30CA-M3/61 affect its layout and usage?
The SMA5J30CA-M3/61 has no polarity marking and functions identically in both directions, eliminating orientation concerns during PCB layout and assembly. This allows direct placement across differential lines (e.g., RS-485, CAN), AC-coupled signals, or floating grounds without risk of reverse installation. Its symmetrical VBR (33.3–36.8 V) and VC ensure matched clamping behavior regardless of transient polarity - a key advantage over unidirectional TVS diodes that require careful cathode alignment.
What is the thermal resistance specification for the SMA5J30CA-M3/61?
The SMA5J30CA-M3/61 has a typical junction-to-lead thermal resistance (RθJL) of 25 °C/W and a 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. These values define how effectively heat generated during surge events transfers to the PCB and ambient environment. Proper pad sizing and copper pour design are essential to maintain safe junction temperatures below 150 °C during repetitive surge testing.
Does the SMA5J30CA-M3/61 require special handling or storage due to moisture sensitivity?
No - the SMA5J30CA-M3/61 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can be subjected to standard lead-free reflow profiles (peak 260 °C) without prior baking. This eliminates moisture-related defects such as popcorning during assembly and simplifies logistics for high-volume SMT lines. The device's molding compound also meets UL 94 V-0 flammability requirements, adding safety margin in enclosed enclosures.
SMA5J30CA-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):
- 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-M3/61 FAQ
1.How can I place an order for SMA5J30CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30CA-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 SMA5J30CA-M3/61 reliable?
The price and inventory of SMA5J30CA-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 SMA5J30CA-M3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J30CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30CA-M3/61?
SMA5J30CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30CA-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 SMA5J30CA-M3/61?
For technical support, including SMA5J30CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30CA-M3/61 requirements.
6.How does Aetrix verify that SMA5J30CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J30CA-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 SMA5J30CA-M3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J30CA-M3/61?
All SMA5J30CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30CA-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 SMA5J30CA-M3/61 part is unused and in its original packaging.
Return procedure for SMA5J30CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J30CA-M3/61 Tags
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