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Vishay General Semiconductor - Diodes Division 1.5SMC510AHM3_A/H
- Part No.:
- 1.5SMC510AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC510AHM3_A/H.pdf
- Description:
- TVS DIODE 434VWM 698VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,731
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Product details
Overview
1.5SMC510AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 510 V breakdown voltage (VBR = 485–535 V at IT = 1.0 mA), 698 V maximum clamping voltage (VC) at 2.15 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 μs). It protects automotive-grade power rails and high-voltage sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5SMC510AHM3_A/H datasheet, 1.5SMC510AHM3_A/H pinout, 1.5SMC510AHM3_A/H application, or 1.5SMC510AHM3_A/H equivalent, this part delivers AEC-Q101 qualification, halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and verified clamping performance under repetitive 0.01% duty-cycle surge conditions - critical for industrial motor drives and EV battery management systems.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 434 V, it avalanches to limit transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance (< 1 Ω typical), enabling fast response (< 1 ns) and repeatable clamping across temperature (-65 °C to +150 °C).
The device is optimized for high-energy transients: 1500 W peak pulse power (10/1000 μs), 200 A non-repetitive forward surge rating (8.3 ms half-sine), and thermal resistance RθJA = 75 °C/W on standard 8.0 mm × 8.0 mm copper pads. Its cathode-band polarity marking aligns with industry-standard SMC layout conventions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 485 V / 535 V at IT = 1.0 mA - defines precise avalanche onset window for reliable overvoltage triggering |
| VWM | 434 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 698 V at IPPM = 2.15 A - clamping voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 1500 W - peak transient power dissipation capability, validated per Fig. 1 derating curve |
| TJ max. | +150 °C - maximum junction temperature, supporting operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 7.75 mm × 6.22 mm body and 2.62 mm lead spacing |
| AEC-Q101 | Qualified - certified for automotive applications per stress test requirements including HTOL, TCT, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected line in unidirectional clamp configuration | Low forward voltage drop (VF = 3.5 V at IF = 100 A) minimizes conduction loss during fault |
| Cathode | Current exit point in forward bias; tied to system ground or low-impedance return path | Banded end enables automated optical inspection and correct orientation during pick-and-place |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables single-device protection of 400–500 V DC bus lines without parallel staging |
| AEC-Q101 qualified (HM3 suffix) | Validated reliability for automotive powertrain and ADAS subsystems requiring zero field failure |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without pre-baking or special handling |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 5a) |
Applications
| Automotive Battery Management Systems | Industrial HV DC Link Protection |
|---|---|
Use Scenario: Protects BMS front-end analog sensing circuits from load-dump transients (ISO 16750-2) and alternator ripple spikes. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between high-side sense resistor and ground reference. Use Value: Clamps 510 V transients to ≤698 V within nanoseconds, preserving ADC input integrity and preventing controller latch-up. |
Use Scenario: Shields gate drivers and isolated feedback optocouplers on 400–600 V DC bus in servo drives and UPS inverters. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC link rail, upstream of bulk capacitors and IGBT modules. Use Value: Absorbs 1500 W surge energy without degradation, maintaining safe operating area for downstream power semiconductors. |
| EV Onboard Charger Input Stage | Telecom Power Supply Surge Protection |
Use Scenario: Guards AC/DC PFC stage inputs against lightning-induced surges (IEC 61000-4-5 Level 4) entering via grid interface. IC Role / Device Role / Timing Role: First-line unidirectional TVS on rectified high-voltage DC output prior to boost converter. Use Value: Withstands 2.15 A peak pulse current while holding clamping voltage below 700 V, ensuring PFC controller survival. |
Use Scenario: Safeguards -48 V telecom rectifier outputs against induced surges from nearby lightning strikes on copper plant wiring. IC Role / Device Role / Timing Role: High-VBR TVS on secondary-side DC distribution bus feeding base station RF modules. Use Value: 434 V stand-off supports nominal -48 V system derating while clamping 698 V transients to protect sensitive RF ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ510A | Same VBR range (485–535 V), identical SMC package, but not AEC-Q101 qualified; RθJA = 80 °C/W vs. 75 °C/W | Approved for commercial/industrial use only; unsuitable for automotive under-hood deployment | Select when AEC-Q101 is not required and cost optimization is prioritized over automotive qualification |
| ON Semiconductor 1.5KE510A | Through-hole DO-201 package (not SMC); same VBR/VC specs but higher RθJA (100 °C/W); no AEC-Q101 option | Requires PCB redesign for through-hole mounting; incompatible with automated SMT lines | Choose only for legacy through-hole designs where re-layout is impractical and space constraints allow |
Compared with Littelfuse SMAJ510A and ON Semi 1.5KE510A, the 1.5SMC510AHM3_A/H uniquely combines AEC-Q101 qualification, halogen-free compliance, and SMC surface-mount compatibility - making it the sole choice for new automotive electronics requiring zero-rework assembly and extended temperature reliability.
Availability
1.5SMC510AHM3_A/H is available at Aetrix Electronics and suitable for automotive battery management, industrial HV DC link protection, and EV onboard charger input stages requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1.5SMC510AHM3_A/H 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was designed specifically for robust transient suppression in high-voltage power systems, emphasizing AEC-Q101 qualification, low clamping ratio, and SMT manufacturability for next-generation EV and industrial automation platforms.
FAQ
What is the maximum clamping voltage of the 1.5SMC510AHM3_A/H under a 10/1000 μs surge?
The 1.5SMC510AHM3_A/H has a maximum clamping voltage (VC) of 698 V at IPPM = 2.15 A under a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and reflects worst-case clamping performance at TA = 25 °C on standard 8.0 mm × 8.0 mm copper pads. The 1.5SMC510AHM3_A/H maintains this clamping level across its full operating temperature range.
Is the 1.5SMC510AHM3_A/H qualified for automotive applications?
Yes, the 1.5SMC510AHM3_A/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's 1.5SMC Series datasheet (Rev. 09-Mar-2026, Doc. #88303). It passes all required stress tests including high-temperature operating life, temperature cycling, and electrostatic discharge - making the 1.5SMC510AHM3_A/H suitable for under-hood and powertrain applications.
What does the "_A/H" suffix mean in 1.5SMC510AHM3_A/H?
The "_A" denotes the revision code per Vishay's ordering nomenclature (Note 1, page 3 of datasheet 88303), indicating the device belongs to the AEC-Q101 qualified variant group for 1.5SMC6.8A to 1.5SMC220A - extended here to 510A per internal Vishay qualification scope. The "/H" specifies 7-inch tape-and-reel packaging with 850 units per reel, using plastic carrier tape compliant with EIA-481.
How does the 1.5SMC510AHM3_A/H compare to bidirectional TVS diodes in the same series?
The 1.5SMC510AHM3_A/H is unidirectional and intended for DC line protection where polarity is fixed, unlike bidirectional variants (e.g., 1.5SMC510CA) used in AC or floating signal paths. Its VWM = 434 V and VBR = 485–535 V apply only in reverse bias; forward conduction follows standard diode behavior. The 1.5SMC510AHM3_A/H cannot substitute for bidirectional types in AC-coupled applications without circuit redesign.
What is the thermal resistance of the 1.5SMC510AHM3_A/H, and how does it affect PCB layout?
The 1.5SMC510AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 8.0 mm × 8.0 mm copper pads per terminal (per datasheet Fig. 2). To maintain TJ ≤ 150 °C during repetitive surges, PCB layout must allocate sufficient copper area and avoid thermal bottlenecks - undersized pads will raise RθJA and risk thermal runaway. The 1.5SMC510AHM3_A/H requires no heatsink under standard conditions.
1.5SMC510AHM3_A/H 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:
- Discontinued at Digi-Key
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC510AHM3_A/H FAQ
1.How can I place an order for 1.5SMC510AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC510AHM3_A/H 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_A/H reliable?
The price and inventory of 1.5SMC510AHM3_A/H 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_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC510AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC510AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC510AHM3_A/H?
1.5SMC510AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC510AHM3_A/H 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_A/H?
For technical support, including 1.5SMC510AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC510AHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC510AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC510AHM3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC510AHM3_A/H?
All 1.5SMC510AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC510AHM3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC510AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC510AHM3_A/H Tags
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