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Vishay General Semiconductor - Diodes Division SMA5J30A-E3/61
- Part No.:
- SMA5J30A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30A-E3/61.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J30A-E3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR) at 1 mA, 48.4 V clamping voltage (VC) at 10.3 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J30A-E3/61 datasheet, SMA5J30A-E3/61 pinout, SMA5J30A-E3/61 application, or SMA5J30A-E3/61 equivalent, key selection criteria include clamping performance under 10.3 A surge, thermal resistance (RθJA = 80 °C/W), unidirectional polarity marking, 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 operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (33.3–36.8 V), it avalanches to limit transient energy across protected nodes. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response (<1 ns), while low incremental surge resistance enables effective suppression of inductive switching spikes and ESD events.
The device is rated for -55 °C to +150 °C junction temperature, meets MSL Level 1 (260 °C reflow peak), and supports unidirectional protection only - cathode identified by band marking. It is not rated for bidirectional use; for that, SMA5J30CA must be selected.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR min/max | 33.3 V / 36.8 V at 1 mA - guaranteed avalanche initiation range; sets minimum overvoltage threshold. |
| VC @ IPPM | 48.4 V at 10.3 A - clamped voltage during 10/1000 μs surge; determines max stress on downstream ICs. |
| PPPM | 500 W - peak pulse power handling per 10/1000 μs waveform; defines single-event surge robustness. |
| RθJA | 80 °C/W - junction-to-ambient thermal resistance on standard 5.0 mm × 5.0 mm pads; guides PCB thermal layout. |
| ID @ VWM | ≤1.0 μA - reverse leakage at 30 V; ensures minimal standby power loss and signal integrity. |
| Polarity | Unidirectional - cathode marked by band; requires correct orientation in series with protected line. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by black band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; carries surge current to reference plane during clamping. |
| Cathode | High-side connection point | Marked with band; connects to protected line (e.g., 30 V rail); voltage referenced to anode during avalanche. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress without parameter drift. |
| MSL Level 1 rating | Supports standard lead-free reflow (260 °C peak) without moisture-induced damage or popcorn effect. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision beyond VC spec. |
| AEC-Q101 qualified option available | HE3/HM3 variants meet automotive qualification; SMA5J30A-E3/61 is commercial-grade but shares identical die and package. |
| RoHS-compliant & halogen-free options | E3 suffix denotes RoHS compliance; M3 suffix adds halogen-free molding compound for stricter environmental programs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load-dump and jump-start transients up to ±100 V. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power input and ground, clamping surges before they reach PMIC or MCU power pins. Use Value: Limits voltage to ≤48.4 V during 10.3 A surge, preventing latch-up or oxide breakdown in 3.3 V/5 V logic supply domains. | Use Scenario: Analog sensor outputs (e.g., pressure, temperature) routed through long harnesses in factory automation systems. IC Role / Device Role / Timing Role: Point-of-entry TVS on each signal line, referenced to local ground, suppressing ESD and inductive coupling from nearby motor drives. Use Value: Sub-1 ns response and <1.0 μA leakage preserve signal fidelity and offset accuracy while surviving 8 kV contact ESD per IEC 61000-4-2. |
| DC-DC Converter Input Protection | Consumer Power Adapter Output Clamping |
Use Scenario: 30 V input stage of isolated flyback or buck converter powering industrial IoT gateways. IC Role / Device Role / Timing Role: Primary-side TVS parallel to bulk capacitor, absorbing switch-node ringing and cross-conduction spikes. Use Value: 500 W PPPM rating handles repetitive 10/1000 μs surges common in poorly regulated AC/DC front-ends without thermal runaway. | Use Scenario: 30 V output of wall-mounted USB-PD or proprietary adapter supplying smart home hubs. IC Role / Device Role / Timing Role: Final-stage TVS on output rail, guarding against no-load overvoltage and cable-disconnect transients. Use Value: Tight VBR tolerance (±5.3%) and 48.4 V VC ensure consistent regulation margin across production batches and temperature range (-55 to +150 °C). |
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-M3/61 | Identical electrical specs; halogen-free molding compound and same RoHS compliance. | No functional difference; selected where halogen-free BOMs are mandated (e.g., EU medical, aerospace). | Choose M3/61 if halogen-free certification is required; otherwise E3/61 offers standard commercial compliance. |
| SMA5J30AHM3_A/I | AEC-Q101 qualified; same VWM/VBR/VC/PPPM, but validated for automotive temperature cycling and humidity testing. | Required for under-hood or ADAS modules; not necessary for commercial indoor equipment. | Select HM3_A/I only for automotive OEM or Tier-1 designs needing formal AEC-Q101 evidence; E3/61 suffices for industrial control panels. |
Compared with SMA5J30A-M3/61 and SMA5J30AHM3_A/I, the SMA5J30A-E3/61 provides identical surge protection performance and package form factor but targets cost-sensitive commercial applications where halogen-free or automotive qualification are not mandated - simplifying procurement and reducing BOM validation overhead.
Availability
SMA5J30A-E3/61 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and DC-DC converter input protection requiring stable component supply, full traceability, and volume-ready packaging.
Supply support for SMA5J30A-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, TVS devices, and optoelectronics with emphasis on reliability, power density, and application-specific qualification.
The SMA5J series was developed to deliver high-power-density transient suppression in compact surface-mount packages for space-constrained automotive, industrial, and computing systems - balancing clamping precision, thermal robustness, and manufacturability.
FAQ
What is the clamping voltage of the SMA5J30A-E3/61 under a 10/1000 μs surge?
The SMA5J30A-E3/61 has a maximum clamping voltage (VC) of 48.4 V when subjected to its rated peak pulse current of 10.3 A using the standardized 10/1000 μs waveform. This value is measured at the device terminals under specified test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads), and represents the upper voltage limit imposed on protected circuitry during surge events. The SMA5J30A-E3/61 maintains this clamping performance across its operational temperature range.
Is the SMA5J30A-E3/61 suitable for bidirectional transient protection?
No, the SMA5J30A-E3/61 is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical characteristics - including breakdown and clamping behavior - apply only in reverse bias. For bidirectional protection, the SMA5J30CA variant must be used. The SMA5J30A-E3/61 features a cathode band marking and must be oriented correctly in-circuit; reverse installation will result in forward conduction and potential failure.
What is the maximum operating temperature for the SMA5J30A-E3/61?
The SMA5J30A-E3/61 has a maximum junction temperature (TJ max.) of +150 °C and an operating junction and storage temperature range of -55 °C to +150 °C. Its thermal resistance (RθJA) is 80 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads. Derating of peak pulse power is required above TA = 25 °C per Figure 2 in the Vishay datasheet 88875, and the SMA5J30A-E3/61 remains fully functional within its specified thermal envelope.
Does the SMA5J30A-E3/61 meet automotive qualification standards?
The SMA5J30A-E3/61 itself is a commercial-grade part and is not AEC-Q101 qualified. However, Vishay offers functionally identical automotive variants: SMA5J30AHE3_A/H (RoHS-compliant, AEC-Q101) and SMA5J30AHM3_A/H (halogen-free, AEC-Q101). These share the same die, SMA package, and electrical specs but undergo additional stress testing. For non-automotive applications, the SMA5J30A-E3/61 delivers full specification compliance without qualification overhead.
What does the "E3/61" suffix indicate in SMA5J30A-E3/61?
The "E3" suffix indicates RoHS-compliant construction with standard molding compound, while "/61" specifies the preferred packaging format: 7-inch diameter plastic tape and reel containing 1800 units. This configuration supports high-speed automated pick-and-place assembly. The SMA5J30A-E3/61 is supplied with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing - ensuring long-term solder joint integrity in the SMA5J30A-E3/61.
SMA5J30A-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMA5J30A-E3/61 FAQ
1.How can I place an order for SMA5J30A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30A-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 SMA5J30A-E3/61 reliable?
The price and inventory of SMA5J30A-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 SMA5J30A-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J30A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30A-E3/61?
SMA5J30A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30A-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 SMA5J30A-E3/61?
For technical support, including SMA5J30A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30A-E3/61 requirements.
6.How does Aetrix verify that SMA5J30A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J30A-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 SMA5J30A-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J30A-E3/61?
All SMA5J30A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30A-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 SMA5J30A-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J30A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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