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Vishay General Semiconductor - Diodes Division SMAJ530-E3/61
- Part No.:
- SMAJ530-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ530-E3/61.pdf
- Description:
- TVS DIODE 477VWM 760VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,961
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Product details
Overview
SMAJ530-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor (TVS) diode designed for high-voltage surge protection in power and signal lines. It features a 530 V minimum breakdown voltage (VBR), 477 V working peak reverse voltage (VWM), 760 V maximum clamping voltage (VC) at 400 mA, 300 W peak pulse power (10/1000 µs), and operates from −55 °C to +150 °C junction temperature.
For engineers reviewing the SMAJ530-E3/61 datasheet, SMAJ530-E3/61 pinout, SMAJ530-E3/61 application, or SMAJ530-E3/61 equivalent, key selection criteria include clamping performance under 10/1000 µs transients, thermal resistance (RθJA = 120 °C/W), unidirectional polarity, and AEC-Q101 qualification eligibility via HM3 suffix variants.
Technical Context
The SMAJ530-E3/61 uses a glass-passivated silicon junction optimized for fast response to ESD and lightning-induced surges. Its clamping behavior is defined by low incremental surge resistance and a typical 7 V/100 mA slope, with VC measured under standardized 10/1000 µs waveform conditions.
It is rated for non-repetitive peak pulse current up to 40 A (IFSM) and exhibits 1.0 µA max DC reverse leakage at VWM, with a typical junction capacitance of 90 pF at 0 V and 7.5 pF at 200 V - confirming suitability for high-voltage, low-capacitance protection where signal integrity must be preserved.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 530 V - ensures reliable conduction onset above system operating voltage, preventing false triggering during normal operation |
| VWM | 477 V - maximum continuous reverse voltage the device blocks without significant leakage |
| VC (max) | 760 V at 400 mA - limits transient voltage seen by downstream ICs or MOSFETs during 10/1000 µs surges |
| PPPM | 300 W - peak surge energy handling capability under standard 10/1000 µs waveform |
| RθJA | 120 °C/W - defines thermal derating on standard PCB pads; requires careful copper area planning for sustained pulse duty |
| IFSM | 40 A - non-repetitive forward surge current rating, critical for inductive switch-off protection |
| CJ (0 V) | 90 pF - low junction capacitance minimizes signal distortion on high-speed or RF-adjacent lines |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional polarity with cathode indicated by color band. Matte tin-plated leads, RoHS-compliant, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VBR exceeded |
| Anode | Reference return path | Typically tied to system ground or low-impedance return plane; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| MSL Level 1 rating | Allows single-reflow assembly without moisture sensitivity concerns; no baking required before SMT |
| Low clamping voltage slope | ~7 V per 100 mA enables predictable voltage limiting across wide current range during surge events |
| AEC-Q101 qualification option | HM3-suffix variants support automotive-grade deployment in engine control, ADAS, and body electronics |
Applications
| Industrial Motor Drives | Automotive Power Distribution |
|---|---|
Use Scenario: Protection of IGBT gate drivers and DC-link sensing circuits against switching transients in variable-frequency drives. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC-link or gate-to-source to clamp inductive kickback spikes. Use Value: Limits VC to 760 V, preventing gate oxide rupture in 600 V-class IGBTs while surviving 40 A surge currents. | Use Scenario: Surge suppression on 48 V battery rail inputs in ADAS domain controllers exposed to load-dump and jump-start events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power input, upstream of DC/DC converters and PMICs. Use Value: Withstands 300 W peak pulses and maintains <1.0 µA leakage at 477 V, ensuring low quiescent power loss in always-on modules. |
| Telecom Base Station Power | High-Voltage Sensor Interfaces |
Use Scenario: Input-stage protection for AC/DC front-ends in outdoor telecom cabinets subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense on rectified AC input, clamping transients before bulk capacitors and PFC controllers. Use Value: 530 V VBR aligns with 400 V RMS AC-derived rails; 120 °C/W RθJA supports thermal design with minimal copper area. | Use Scenario: Protection of isolated voltage dividers and ADC front-ends measuring >400 V bus voltages in energy metering systems. IC Role / Device Role / Timing Role: High-impedance shunt clamp across precision resistive divider to prevent overvoltage damage during fault conditions. Use Value: 90 pF capacitance avoids loading effects on high-impedance dividers; 760 V VC ensures ADC input stays within ±15 V absolute max rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ550-E3/61 | Higher VBR (550 V min) and VWM (495 V); same package, power, and clamping (760 V) | Better suited for 480 V AC-derived systems or higher-voltage DC rails where 477 V VWM is marginal | Select SMAJ550-E3/61 when system nominal voltage exceeds 450 V DC or requires tighter margin above VWM |
| 1.5SMC530A | Same VBR/VWM but in larger SMC (DO-214AB) package; higher PPPM (1500 W), higher RθJA (~65 °C/W) | Used where higher single-pulse energy absorption is needed, but board space allows larger footprint | Choose 1.5SMC530A only if 300 W is insufficient and thermal management permits larger thermal mass |
Compared with SMAJ550-E3/61 and 1.5SMC530A, the SMAJ530-E3/61 offers optimal balance of compact SMA footprint, precise 477 V standoff, and verified 300 W surge capacity - making it preferred for space-constrained, high-voltage industrial and telecom power stages where exact VWM margin is critical.
Availability
SMAJ530-E3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive power distribution, and telecom base station power requiring stable component supply and consistent surge performance across production batches.
Supply support for SMAJ530-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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMAJ series was developed for high-voltage transient suppression in compact surface-mount formats, targeting robustness in harsh environments including automotive, industrial, and infrastructure applications.
FAQ
What is the minimum breakdown voltage specification for SMAJ530-E3/61?
The SMAJ530-E3/61 has a guaranteed minimum breakdown voltage (VBR) of 530 V at 100 μA test current, per Vishay Document Number 88391. This value is measured under controlled conditions and defines the lowest voltage at which the device begins avalanche conduction - critical for ensuring it remains non-conductive during normal 477 V system operation while reliably triggering during overvoltage events.
Is SMAJ530-E3/61 suitable for automotive applications?
The base SMAJ530-E3/61 is not AEC-Q101 qualified; however, the variant SMAJ530HM3_B/H is AEC-Q101 qualified and shares identical electrical characteristics. For automotive use, specify the HM3-suffix part number - the "HM3" denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction, validated for engine bay and chassis-mounted electronics per stress test requirements.
What is the clamping voltage of SMAJ530-E3/61 under standard surge conditions?
The SMAJ530-E3/61 has a maximum clamping voltage (VC) of 760 V when subjected to a 400 mA, 10/1000 μs waveform - the industry-standard surge test profile. This value represents the peak voltage that will appear across the protected circuit during such an event, directly determining whether downstream components like MOSFETs or controllers remain within safe operating limits.
Does SMAJ530-E3/61 have bidirectional polarity?
No, SMAJ530-E3/61 is unidirectional only, as explicitly stated in the Vishay datasheet. It functions as a reverse-biased avalanche diode, conducting only when cathode voltage exceeds anode by ≥530 V. For bidirectional protection, separate devices or dedicated bidirectional TVS families (e.g., SMBJ series) must be used - SMAJ530-E3/61 cannot substitute in AC-coupled or symmetrical surge scenarios.
What is the thermal resistance junction-to-ambient for SMAJ530-E3/61?
The typical thermal resistance junction-to-ambient (RθJA) for SMAJ530-E3/61 is 120 °C/W, measured on a standard 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal. This value assumes minimal PCB copper; actual thermal performance improves significantly with added thermal relief or internal ground planes, and must be factored into derating calculations for repetitive surge conditions.
SMAJ530-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 477V
- Voltage - Breakdown (Min):
- 530V
- Voltage - Clamping (Max) @ Ipp:
- 760V
- Current - Peak Pulse (10/1000µs):
- 400mA
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 90pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ530-E3/61 FAQ
1.How can I place an order for SMAJ530-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ530-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 SMAJ530-E3/61 reliable?
The price and inventory of SMAJ530-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 SMAJ530-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ530-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ530-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ530-E3/61?
SMAJ530-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ530-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 SMAJ530-E3/61?
For technical support, including SMAJ530-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ530-E3/61 requirements.
6.How does Aetrix verify that SMAJ530-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ530-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 SMAJ530-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ530-E3/61?
All SMAJ530-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ530-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 SMAJ530-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ530-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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