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Vishay General Semiconductor - Diodes Division SMAJ530HM3_A/I
- Part No.:
- SMAJ530HM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ530HM3_A/I.pdf
- Description:
- TVS DIODE 477VWM 760VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,435
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Product details
Overview
SMAJ530HM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of sensitive electronics. It features a 530 V standoff voltage (VWM), 589–647 V breakdown range (VBR at 1 mA), 400 W peak pulse power (10/1000 μs), and clamps transients to ≤958 V at 400 A peak surge current - deployed on power rails and signal lines in industrial motor drives and telecom infrastructure.
For engineers reviewing the SMAJ530HM3_A/I datasheet, SMAJ530HM3_A/I pinout, SMAJ530HM3_A/I application, or SMAJ530HM3_A/I equivalent, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, junction-to-lead thermal resistance, and real-world clamping performance under repetitive surge conditions.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-banded polarity, leveraging a glass-passivated silicon junction for stable avalanche response. Its 120 °C/W junction-to-ambient thermal resistance (RθJA) and 30 °C/W junction-to-lead (RθJL) enable reliable operation up to 150 °C junction temperature when mounted on 5.0 mm × 5.0 mm copper pads.
The device meets MSL Level 1 per J-STD-020, supports 260 °C lead-free reflow, and is halogen-free and RoHS-compliant (HM3 suffix). It is AEC-Q101 qualified for automotive-grade reliability but specified for use across industrial, telecom, and computing systems requiring IEC 61000-4-2/4-4/4-5 compliant transient suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 530 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA; defines safe DC/AC rail protection threshold |
| VBR min/max | 589 V / 647 V at 1 mA - guaranteed avalanche onset window; ensures consistent clamping initiation across production lots |
| VC @ IPPM | ≤958 V at 400 A - maximum clamped voltage during 10/1000 μs surge; determines protected circuit's peak stress level |
| PPPM | 400 W - peak pulse power handling (10/1000 μs waveform); defines single-event surge energy absorption capacity |
| IFSM | 40 A - non-repetitive forward surge current rating (8.3 ms half-sine); validates robustness against inrush or fault currents |
| TJ max | +150 °C - absolute maximum junction temperature; sets thermal design margin for PCB layout and power cycling |
| RθJL | 30 °C/W - junction-to-lead thermal resistance; enables accurate thermal modeling when soldered to copper planes |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads; cathode indicated by band marking on unidirectional variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential side of protected line | Defines polarity-sensitive placement - reversal causes open-circuit failure during surge events |
| Cathode | Current exit terminal in forward bias; marked with band; connected to higher-potential side or ground reference | Must be routed to system ground or common return path to enable clamping action during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for under-hood and ADAS subsystems |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental compliance mandates without compromising surge robustness or thermal stability |
| 400 W peak pulse power (10/1000 μs) | Handles high-energy transients from inductive switching (e.g., solenoid drivers, relay coils) without degradation |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), improving protection fidelity for high-speed interfaces |
| MSL Level 1, 260 °C reflow compatible | Enables standard SMT assembly without moisture sensitivity concerns or pre-bake requirements |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
|
Use Scenario: Protection of IGBT gate drivers and DC bus sensing circuits against switching-induced voltage spikes and lightning-induced surges on 48 V–600 V rails. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between gate driver output and ground, or across DC bus and chassis ground. Use Value: Limits transient voltage to ≤958 V, preventing gate oxide rupture in 650 V IGBTs and ensuring >100,000 surge cycles per MIL-STD-883H Method 3015.7. |
Use Scenario: Input-stage surge suppression on AC/DC rectifier outputs and PoE injectors in base station power modules. IC Role / Device Role / Timing Role: Primary-level TVS on +530 V intermediate bus, coordinated with MOVs and gas discharge tubes for multi-stage protection. Use Value: Withstands repeated 400 A surges while maintaining <1 μA leakage at 530 V, preserving efficiency and enabling Class I lightning protection per IEC 61000-4-5. |
| Automotive Body Control Modules | Industrial PLC I/O Cards |
|
Use Scenario: CAN FD and LIN bus line protection in BCMs exposed to load dump and ISO 7637-2 Pulse 5a transients. IC Role / Device Role / Timing Role: Secondary clamping device downstream of primary TVS arrays, placed directly at connector interface. Use Value: AEC-Q101 qualification ensures survival under -40 °C to +125 °C ambient with 150 °C junction limit, supporting 15-year automotive service life. |
Use Scenario: Analog input channel protection on 0–10 V/4–20 mA sensor interfaces subjected to field wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: High-voltage standoff TVS bridging signal line to local ground plane, minimizing capacitance impact on bandwidth. Use Value: 530 V VWM allows direct placement on high-side analog inputs without signal attenuation, while 958 V clamping prevents ADC saturation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ530HE3_A/I | Same electrical specs, but RoHS-compliant (E3) without halogen-free certification; no AEC-Q101 qualification | Restricted to commercial-grade industrial and computing applications; not approved for automotive use | Select when halogen-free requirement is waived and automotive qualification is unnecessary |
| SMCJ530A | Higher 1500 W peak pulse power (10/1000 μs), larger SMC (DO-214AB) package, 100 A IPPM rating | Better suited for high-energy surge environments (e.g., outdoor telecom cabinets), but requires larger PCB area | Choose when system-level surge test levels exceed IEC 61000-4-5 Level 4 and board space permits SMC footprint |
Compared with SMAJ530HM3_A/I, SMAJ530HE3_A/I offers identical clamping and standoff performance but lacks halogen-free and automotive qualification, while SMCJ530A trades compact SMA size for significantly higher surge energy handling - making SMAJ530HM3_A/I optimal for space-constrained, automotive-qualified, high-voltage industrial designs.
Availability
SMAJ530HM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and PLC I/O cards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMAJ530HM3_A/I 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and ruggedized packaging.
The SMAJ series is engineered for high-voltage transient suppression in harsh environments - targeting applications where precise clamping, low leakage, and AEC-Q101 validation are mandatory for functional safety and long-term field operation.
FAQ
What is the maximum clamping voltage of SMAJ530HM3_A/I at its rated peak pulse current?
The SMAJ530HM3_A/I has a maximum clamping voltage (VC) of 958 V at its rated peak pulse current (IPPM) of 400 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMAJ530HM3_A/I maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMAJ530HM3_A/I qualified for automotive applications?
Yes, SMAJ530HM3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88390. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its suitability for automotive body electronics, infotainment power rails, and ADAS sensor interfaces. The SMAJ530HM3_A/I meets all requirements for under-hood and cabin-mounted modules.
What does the 'HM3' suffix indicate in SMAJ530HM3_A/I?
The 'HM3' suffix in SMAJ530HM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. 'H' identifies the automotive-grade version, 'M3' specifies halogen-free molding compound and matte tin plating, and '_A/I' indicates tape-and-reel packaging (7500 units per 13-inch reel). This distinguishes it from E3 (RoHS only) and HE3 (RoHS + AEC-Q101, non-halogen-free) variants.
How does SMAJ530HM3_A/I perform thermally on standard PCB layouts?
SMAJ530HM3_A/I exhibits a typical junction-to-lead thermal resistance (RθJL) of 30 °C/W and junction-to-ambient (RθJA) of 120 °C/W when mounted on minimum recommended 5.0 mm × 5.0 mm copper pads per terminal. This enables sustained 3.3 W power dissipation at 50 °C ambient and supports reliable operation up to 150 °C junction temperature - critical for enclosed industrial enclosures and automotive junction boxes.
Can SMAJ530HM3_A/I be used in bidirectional protection configurations?
No, SMAJ530HM3_A/I is a unidirectional TVS diode, identified by its cathode band marking and specified breakdown behavior in one polarity only. For bidirectional protection, Vishay offers the SMAJ530CA variant (e.g., SMAJ530CA-M3/5A), which provides symmetrical clamping in both directions. Using SMAJ530HM3_A/I in bidirectional applications would result in open-circuit failure during reverse-polarity transients.
SMAJ530HM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- Telecom
- Capacitance @ Frequency:
- 90pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ530HM3_A/I FAQ
1.How can I place an order for SMAJ530HM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ530HM3_A/I 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 SMAJ530HM3_A/I reliable?
The price and inventory of SMAJ530HM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ530HM3_A/I is usually 5 days.
3.What payment methods are accepted for SMAJ530HM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ530HM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ530HM3_A/I?
SMAJ530HM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ530HM3_A/I 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 SMAJ530HM3_A/I?
For technical support, including SMAJ530HM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ530HM3_A/I requirements.
6.How does Aetrix verify that SMAJ530HM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMAJ530HM3_A/I 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 SMAJ530HM3_A/I meets industry standards.
7.What is the process for return or replacement of SMAJ530HM3_A/I?
All SMAJ530HM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ530HM3_A/I, 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 SMAJ530HM3_A/I part is unused and in its original packaging.
Return procedure for SMAJ530HM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ530HM3_A/I Tags
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