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Vishay General Semiconductor - Diodes Division 1.5SMC510AHM3_B/I
- Part No.:
- 1.5SMC510AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC510AHM3_B/I.pdf
- Description:
- TVS DIODE 434VWM 698VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,450
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Product details
Overview
1.5SMC510AHM3_B/I from Vishay General Semiconductor is a unidirectional 510 V standoff transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 2.15 A maximum clamping current, and 698 V maximum clamping voltage at IPPM - deployed for lightning and inductive-switching surge protection on high-voltage DC bus lines in industrial motor drives and telecom power supplies.
For engineers reviewing the 1.5SMC510AHM3_B/I datasheet, 1.5SMC510AHM3_B/I pinout, 1.5SMC510AHM3_B/I application, or 1.5SMC510AHM3_B/I equivalent, key selection criteria include verified 510 V stand-off voltage, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, and thermal resistance of 75 °C/W junction-to-ambient under standard pad layout.
Technical Context
This device operates as a unidirectional avalanche clamp, triggering when reverse voltage exceeds 510 V (VWM) and clamping transients to ≤698 V at 2.15 A peak pulse current. Its glass-passivated junction ensures stable breakdown and low leakage (<1 μA at VWM).
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (260 °C peak reflow), supports 150 °C max junction temperature, and delivers 6.5 W steady-state power dissipation on infinite heatsink at 50 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 510 V - maximum continuous reverse operating voltage before clamping initiates; defines safe DC bus margin in 480–600 V systems. |
| VBR (Breakdown Voltage) | 485–535 V at 1 mA - verified avalanche onset range; ensures predictable turn-on with <±5% tolerance. |
| VC (Clamping Voltage) | 698 V at IPPM = 2.15 A - peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component voltage rating. |
| PPPM (Peak Pulse Power) | 1500 W - energy-handling capacity per IEC 61000-4-5 waveform; enables robust protection against lightning-induced surges. |
| ID (Reverse Leakage) | <1 μA at 510 V - minimal standby power loss and signal integrity impact in high-impedance sensing or control circuits. |
| TJ max | 150 °C - maximum allowable junction temperature; supports operation in enclosed industrial enclosures without forced cooling. |
| RθJA | 75 °C/W - thermal resistance with standard 8.0 mm × 8.0 mm copper pads; informs PCB copper area requirements for thermal management. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, polarity indicated by cathode band (unidirectional only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection to protected line | Reverse-biased terminal that conducts during overvoltage; must connect toward higher potential side of DC rail. |
| Anode | Low-side reference to ground or return path | Common return node; requires low-inductance path to system ground plane for effective clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; suitable for under-hood and EV charging interfaces. |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-020; eliminates brominated flame retardants for safer end-of-life processing. |
| 1500 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation when properly mounted. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., MOSFET switching noise), improving protection fidelity. |
| MSL Level 1 moisture sensitivity | Zero bake requirement prior to reflow; compatible with standard SMT assembly lines without dry-pack handling. |
Applications
| Industrial Motor Drives | Telecom DC Power Distribution |
|---|---|
Use Scenario: Protection of 480–600 V DC link capacitors and IGBT gate drivers against inductive kickback from contactor switching and regenerative braking. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus rails to clamp voltage spikes before they reach power semiconductors. Use Value: Prevents IGBT latch-up and capacitor dielectric stress by limiting transient excursions to ≤698 V, extending system MTBF. |
Use Scenario: Surge suppression on -48 V or +54 V telecom rectifier outputs exposed to lightning-induced surges on outdoor plant wiring. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC distribution bus feeding remote radio units and baseband processors. Use Value: Maintains uninterrupted service during 10/1000 μs surges up to 4 kV by absorbing 1500 W without failure or parameter shift. |
| EV Charging Station Power Modules | Renewable Energy Inverter DC Inputs |
Use Scenario: Input-stage protection for 1000 V-class AC/DC converters in Level 2 and DC fast chargers subjected to grid transients and load dump events. IC Role / Device Role / Timing Role: Standoff-rated TVS on HV DC input bus, coordinated with upstream MOVs and downstream DC-DC controllers. Use Value: Enables compliance with UL 1741 SA and IEC 61851-23 by clamping transients within 1 ns response time while sustaining 150 °C junction temperature. |
Use Scenario: Protection of string-level DC inputs in solar inverters exposed to lightning surges on long PV array cabling. IC Role / Device Role / Timing Role: High-VWM unidirectional suppressor placed between PV+ and ground to shunt common-mode surges. Use Value: Provides 510 V working margin above 1000 V MPPT range, ensuring no false triggering while delivering 698 V clamping for IEEE 1547-compliant ride-through. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ510A-E3/52 | Same VWM (510 V) and VC (698 V), but lower PPPM (600 W); SMB package (DO-214AA), smaller footprint, higher RθJA (110 °C/W). | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for high-repetition-rate industrial environments. | Select when board space is constrained and surge energy is ≤600 W; verify thermal derating for continuous operation. |
| 1.5KE510A | Through-hole DO-15 package; identical electrical specs (VWM, VC, PPPM), but no AEC-Q101 or halogen-free certification. | Not qualified for automotive or RoHS-halogen-free production; requires wave soldering, not compatible with full SMT lines. | Use only in legacy through-hole designs where rework to SMC is impractical; avoid for new automotive or green manufacturing programs. |
Compared with SMBJ510A-E3/52 and 1.5KE510A, the 1.5SMC510AHM3_B/I uniquely combines AEC-Q101 qualification, halogen-free compliance, 1500 W surge capability, and SMC package scalability - making it the preferred choice for high-reliability, high-energy, and automotive-grade DC bus protection.
Availability
1.5SMC510AHM3_B/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power distribution, EV charging stations, and renewable energy inverters requiring stable component supply with guaranteed long-term sourcing and automotive-grade traceability.
Supply support for 1.5SMC510AHM3_B/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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive qualification.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and electric vehicle systems where robustness and long-term stability are critical.
FAQ
What is the clamping voltage of the 1.5SMC510AHM3_B/I at its rated peak pulse current?
The 1.5SMC510AHM3_B/I has a maximum clamping voltage (VC) of 698 V at its rated peak pulse current (IPPM) of 2.15 A, measured using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events. The 1.5SMC510AHM3_B/I maintains this clamping performance without parameter drift after repeated surges when mounted per the recommended 8.0 mm × 8.0 mm copper pad layout.
Is the 1.5SMC510AHM3_B/I AEC-Q101 qualified, and what does the 'HM3' suffix indicate?
Yes, the 1.5SMC510AHM3_B/I is AEC-Q101 qualified - confirmed by the 'HM3' suffix, which denotes halogen-free, RoHS-compliant construction with full automotive reliability testing (including HTGB, HTRB, and temperature cycling). The 'HM3' marking distinguishes it from commercial-grade 'M3' variants and ensures suitability for automotive power electronics such as on-board chargers and DC-DC converters. The 1.5SMC510AHM3_B/I carries this qualification across its full specified temperature range (−65 °C to +150 °C).
How does the 1.5SMC510AHM3_B/I differ from bidirectional TVS diodes like 1.5SMC510CA?
The 1.5SMC510AHM3_B/I is unidirectional and features a cathode band for polarity-sensitive placement, whereas 1.5SMC510CA is bidirectional with no polarity marking and symmetric clamping in both directions. The 1.5SMC510AHM3_B/I offers lower leakage (<1 μA at 510 V) and is optimized for DC rail protection where reverse conduction must be blocked. Bidirectional versions are used in AC-coupled or floating signal lines - the 1.5SMC510AHM3_B/I is not interchangeable with them without circuit redesign.
What is the thermal resistance and recommended PCB layout for optimal performance of the 1.5SMC510AHM3_B/I?
The 1.5SMC510AHM3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To achieve this rating, use solid copper pours connected via multiple thermal vias to inner-layer planes. Avoid narrow traces or isolated pads - insufficient copper area increases junction temperature and reduces surge endurance. The 1.5SMC510AHM3_B/I must operate below 150 °C TJ, so thermal design is critical in enclosed or high-ambient environments.
Can the 1.5SMC510AHM3_B/I be used in parallel for higher surge current handling?
No - the 1.5SMC510AHM3_B/I is not designed for parallel operation due to inherent parameter variation (e.g., VBR tolerance ±5%) that causes current imbalance and premature failure of the unit with lower breakdown voltage. For higher energy requirements, select a single higher-power device (e.g., 3.0SMC series) or implement staged protection with upstream MOVs and downstream TVS. Derating or paralleling the 1.5SMC510AHM3_B/I voids its 1500 W rating and violates Vishay's application guidance.
1.5SMC510AHM3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 434V
- Voltage - Breakdown (Min):
- 485V
- Voltage - Clamping (Max) @ Ipp:
- 698V
- Current - Peak Pulse (10/1000µs):
- 2.15A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC510AHM3_B/I FAQ
1.How can I place an order for 1.5SMC510AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC510AHM3_B/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 1.5SMC510AHM3_B/I reliable?
The price and inventory of 1.5SMC510AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC510AHM3_B/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC510AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC510AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC510AHM3_B/I?
1.5SMC510AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC510AHM3_B/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 1.5SMC510AHM3_B/I?
For technical support, including 1.5SMC510AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC510AHM3_B/I requirements.
6.How does Aetrix verify that 1.5SMC510AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC510AHM3_B/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 1.5SMC510AHM3_B/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC510AHM3_B/I?
All 1.5SMC510AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC510AHM3_B/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 1.5SMC510AHM3_B/I part is unused and in its original packaging.
Return procedure for 1.5SMC510AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC510AHM3_B/I Tags
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