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Vishay General Semiconductor - Diodes Division SMA5J30CA-E3/61
- Part No.:
- SMA5J30CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30CA-E3/61.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,588
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Product details
Overview
SMA5J30CA-E3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 30 V stand-off voltage (VWM), 48.4 V maximum clamping voltage at 10.3 A peak pulse current (IPPM), 500 W peak pulse power rating (10/1000 µs), and operates from −55 °C to +150 °C junction temperature - used in automotive sensor protection and industrial I/O interface surge hardening.
For engineers reviewing the SMA5J30CA-E3/61 datasheet, SMA5J30CA-E3/61 pinout, SMA5J30CA-E3/61 application, or SMA5J30CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, AEC-Q101 qualification eligibility (via HE3 suffix), RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time and stable breakdown behavior under repetitive surge stress. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating signal paths without polarity concerns.
Rated for 500 W peak pulse power per 10/1000 µs waveform, it delivers 48.4 V clamping at 10.3 A IPPM with 1.0 µA max reverse leakage at 30 V VWM - meeting ANSI/IEEE C62.35 standards for transient suppression in harsh EMI environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 33.3 V / 36.8 V - breakdown voltage range at 1 mA test current, defining clamping onset threshold |
| VC @ IPPM | 48.4 V - clamped voltage during 10.3 A 10/1000 µs surge, directly limiting downstream IC stress |
| PPPM | 500 W - peak transient energy absorption capacity under standardized surge waveform |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive or industrial enclosures |
| RθJA | 80 °C/W - thermal resistance from junction to ambient, guiding PCB copper pad sizing for thermal reliability |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking - bidirectional construction eliminates cathode/anode identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically - voltage clamping occurs regardless of polarity across the device |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides mechanical anchoring and heat dissipation via PCB copper pads (0.2" × 0.2") |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded interfaces without polarity constraints |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage performance under thermal cycling and humidity stress |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak - compatible with standard lead-free SMT assembly processes |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving system-level immunity |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Primary clamping element placed at connector entry point to limit line voltage to ≤48.4 V during 10/1000 µs surges. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V signal-chain ICs while maintaining signal integrity due to low capacitance (<100 pF at 0 V). | Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from solenoid coils or motor contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS (30 V) placed across input terminals to clamp transients before they reach optocoupler or MCU GPIO protection networks. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) up to 1 kV/2 Ω without derating at full 500 W rating. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Transient suppression on Ethernet PHY magnetics center-taps or RS-485 bus lines exposed to lightning-induced coupling. IC Role / Device Role / Timing Role: Bidirectional shunt device absorbing common-mode surges between differential pair and ground reference. Use Value: Symmetrical clamping ensures equal protection on both polarities - critical for full-duplex communication links where DC bias is absent. | Use Scenario: Secondary-side overvoltage protection in AC/DC adapters for USB-C PD or smart home devices subjected to mains-borne transients. IC Role / Device Role / Timing Role: Final-stage clamping component after primary Y-cap and common-mode choke, limiting residual spikes to <48.4 V on 5 V/9 V output rails. Use Value: Meets UL 62368-1 Annex G requirements for secondary circuit surge withstand when mounted on minimum 5 mm² copper pads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J30A-E3/61 | Unidirectional variant; same VWM, VBR, VC, and PPPM but only conducts in one polarity | Requires correct orientation during layout; unsuitable for AC or floating nodes | Select only when polarity is fixed and space allows explicit cathode marking |
| SMBJ30CA-E3/52 | Same VWM/VBR/VC specs but in larger SMB (DO-214AA) package; 600 W PPPM rating | Higher thermal mass supports longer surge duration; requires larger PCB footprint | Prefer when system-level testing exceeds 500 W or board layout permits 2.54 mm pitch increase |
Compared with SMA5J30CA-E3/61, the unidirectional SMA5J30A-E3/61 demands strict polarity alignment but offers identical electrical clamping; the SMBJ30CA-E3/52 trades compactness for higher surge margin and thermal robustness - choice depends on layout constraints, polarity flexibility, and worst-case surge profile.
Availability
SMA5J30CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line interface surge suppression requiring stable component supply and traceable sourcing.
Supply support for SMA5J30CA-E3/61 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 TVS 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 rapid response, low clamping voltage, and AEC-Q101 readiness are mandatory.
FAQ
What is the clamping voltage of the SMA5J30CA-E3/61 under a 10/1000 µs surge?
The SMA5J30CA-E3/61 clamps to a maximum of 48.4 V when subjected to its rated peak pulse current of 10.3 A under the standardized 10/1000 µs waveform. This value is measured at the device terminals with specified mounting conditions (0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuits during transient events. The SMA5J30CA-E3/61 maintains this clamping performance bidirectionally.
Is the SMA5J30CA-E3/61 RoHS-compliant and halogen-free?
Yes, the SMA5J30CA-E3/61 carries the "E3" suffix, indicating it is RoHS-compliant and manufactured to commercial-grade specifications. It is not halogen-free - that designation applies to "M3" suffix variants. The E3 version uses matte tin-plated leads and meets JESD 201 Class 2 whisker resistance requirements. The SMA5J30CA-E3/61 is also MSL Level 1 qualified for lead-free reflow.
Does the SMA5J30CA-E3/61 have polarity markings on the package?
No, the SMA5J30CA-E3/61 does not feature polarity markings because it is a bidirectional TVS diode. Unlike unidirectional versions (e.g., SMA5J30A-E3/61), which use a cathode band, the CA-suffixed variant has symmetrical electrical behavior - either terminal may serve as anode or cathode depending on instantaneous voltage polarity. This eliminates orientation concerns during automated placement.
What is the maximum operating temperature range for the SMA5J30CA-E3/61?
The SMA5J30CA-E3/61 is rated for a junction and storage temperature range of −55 °C to +150 °C. This wide thermal envelope supports deployment in under-hood automotive environments, industrial control cabinets, and outdoor telecom enclosures. Derating of peak pulse power begins above 25 °C ambient, per Figure 2 in the Vishay datasheet 88875.
Can the SMA5J30CA-E3/61 be used as a direct replacement for SMA5J30A-E3/61?
No - the SMA5J30CA-E3/61 is bidirectional while the SMA5J30A-E3/61 is unidirectional, so they are not functionally interchangeable without circuit review. Replacing the unidirectional version with SMA5J30CA-E3/61 introduces no polarity dependency but may alter leakage behavior in DC-biased paths. Layout changes are unnecessary, but system-level transient response validation is required when substituting SMA5J30CA-E3/61 for SMA5J30A-E3/61.
SMA5J30CA-E3/61 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-E3/61 FAQ
1.How can I place an order for SMA5J30CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30CA-E3/61 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-E3/61 reliable?
The price and inventory of SMA5J30CA-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J30CA-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J30CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30CA-E3/61?
SMA5J30CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30CA-E3/61 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-E3/61?
For technical support, including SMA5J30CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30CA-E3/61 requirements.
6.How does Aetrix verify that SMA5J30CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J30CA-E3/61 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-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J30CA-E3/61?
All SMA5J30CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30CA-E3/61, 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-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J30CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J30CA-E3/61 Tags
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