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Vishay General Semiconductor - Diodes Division 1.5SMC510AHM3_B/H
- Part No.:
- 1.5SMC510AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC510AHM3_B/H.pdf
- Description:
- TVS DIODE 434VWM 698VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,178
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Product details
Overview
1.5SMC510AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power rails and signal lines. It features a 510 V standoff voltage (VWM), 589–647 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), and clamps transients to ≤698 V at 2.15 A IPPM. It is AEC-Q101 qualified and used in automotive power supply input stages.
For engineers reviewing the 1.5SMC510AHM3_B/H datasheet, 1.5SMC510AHM3_B/H pinout, 1.5SMC510AHM3_B/H application, or 1.5SMC510AHM3_B/H equivalent, this part delivers verified clamping performance, halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and automotive-grade reliability - critical for ECU, battery management, and DC-DC converter protection designs.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, ensuring robust suppression of lightning-induced surges and inductive switching transients on 48 V and higher automotive systems.
The 1.5SMC510AHM3_B/H is rated for TJ = –65 °C to +150 °C operation and derates linearly above 25 °C ambient per Fig. 2. With RθJA = 75 °C/W and RθJL = 15 °C/W, thermal performance depends on PCB copper pad area (0.31" × 0.31" recommended), and it supports repetitive 0.01% duty cycle pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 434 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below system max voltage. |
| VBR (Breakdown) | 485–535 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 698 V at IPPM = 2.15 A - Measured peak voltage under 10/1000 µs surge; directly limits stress on downstream MOSFETs or controllers. |
| PPPM | 1500 W - Peak pulse power handling capability; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge testing when properly laid out. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating penalties. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 8.0 mm × 8.0 mm copper pads; compatible with automated SMT assembly. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT; suffix HM3 denotes qualification. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection in unidirectional configuration | Connected to protected line (e.g., battery rail); clamps positive transients to ground when reverse-biased. |
| Anode | Ground reference terminal | Connected to system ground plane; completes clamping path; requires low-inductance layout for effective surge diversion. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables single-device protection against severe ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 surges in 48 V systems. |
| Glass passivated junction | Ensures stable VBR over lifetime and improved reliability vs. epoxy-passivated alternatives in high-humidity environments. |
| Halogen-free & RoHS-compliant (HM3) | Meets automotive environmental mandates (e.g., ELV, REACH); eliminates brominated flame retardants in molding compound. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., load dump), improving protection margin for sensitive ICs. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without baking or special handling; reduces manufacturing complexity. |
Applications
| Automotive Battery Input Protection | Industrial 48 V DC Power Distribution |
|---|---|
Use Scenario: Protecting vehicle infotainment ECUs from load dump transients up to 60 V sustained for 400 ms and superimposed spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail (+) and chassis ground; clamps transients within nanoseconds. Use Value: Limits voltage seen by downstream DC-DC converters to ≤698 V, preventing gate oxide rupture in 600 V MOSFETs and avoiding latch-up in PMICs. |
Use Scenario: Safeguarding programmable logic controllers (PLCs) powered from centralized 48 V telecom-style supplies exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main 48 V input bus; coordinated with upstream fuses and secondary TVS arrays. Use Value: Absorbs 1500 W surges without degradation, maintaining system uptime in factory automation where replacement downtime incurs high cost. |
| Onboard Charger (OBC) DC Link Protection | EV Traction Inverter Auxiliary Supply Rail |
Use Scenario: Shielding bidirectional AC/DC converters in EV onboard chargers from grid-side surges and regenerative energy feedback spikes. IC Role / Device Role / Timing Role: Unidirectional TVS on high-side DC link (400–800 V range); placed upstream of IGBT gate drivers. Use Value: Clamps transient overvoltages before they propagate to isolated gate drive circuits, eliminating false triggering and driver failure. |
Use Scenario: Protecting 12 V auxiliary supplies derived from traction battery via DC-DC converters in electric powertrains. IC Role / Device Role / Timing Role: Secondary-level TVS on isolated 12 V output rail feeding MCU, CAN transceivers, and sensors. Use Value: Maintains functional safety integrity (ASIL-B) by preventing transient-induced resets or communication faults in critical control subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ510A-E3/57T | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W), non-AEC-Q101 | Suitable for space-constrained consumer or industrial boards where surge severity is lower (IEC 61000-4-5 Level 2) | Select only if 1500 W rating is not required and automotive qualification is unnecessary. |
| 1.5KE510A | Through-hole DO-201 package, same VWM/VBR/VC specs, but no AEC-Q101 or halogen-free certification | Used in legacy industrial power supplies where SMT is not feasible and automotive compliance is irrelevant | Choose only for prototyping or non-automotive repair scenarios requiring identical electrical behavior in through-hole format. |
Compared with SMAJ510A-E3/57T and 1.5KE510A, the 1.5SMC510AHM3_B/H uniquely combines AEC-Q101 qualification, halogen-free construction, 1500 W surge capacity, and SMC package thermal performance - making it the sole option for production automotive 48 V+ systems requiring full compliance and reliability validation.
Availability
1.5SMC510AHM3_B/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial 48 V power distribution systems, and EV onboard charger protection requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC510AHM3_B/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 diodes, rectifiers, and protection devices with emphasis on reliability, power efficiency, and automotive-grade validation.
The 1.5SMC Series was engineered specifically for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness, consistency, and long-term stability are mandatory.
FAQ
What is the maximum clamping voltage of the 1.5SMC510AHM3_B/H under a 10/1000 µs surge?
The 1.5SMC510AHM3_B/H clamps to a maximum of 698 V when subjected to its rated peak pulse current of 2.15 A with a 10/1000 µs waveform. This value is measured per Fig. 1 and Table on page 2 of the Vishay datasheet 88303 and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is the 1.5SMC510AHM3_B/H suitable for automotive applications?
Yes - the 1.5SMC510AHM3_B/H is AEC-Q101 qualified (as indicated by the HM3 suffix and documented in the Ordering Information table on page 3), making it approved for use in automotive electronics including engine control modules, battery management systems, and ADAS power supplies where reliability under thermal and mechanical stress is critical.
What does the "HM3" suffix mean in 1.5SMC510AHM3_B/H?
The "HM3" suffix in 1.5SMC510AHM3_B/H indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" denotes 7-inch tape-and-reel packaging (850 units per reel), and "B" specifies the revision level for the 250–540 V voltage range group, per Vishay's ordering matrix on page 3 of document 88303.
How does the 1.5SMC510AHM3_B/H differ from the 1.5SMC510A-E3/57T?
The 1.5SMC510AHM3_B/H is halogen-free and AEC-Q101 qualified, while the 1.5SMC510A-E3/57T is RoHS-compliant but not halogen-free or automotive-qualified. Both share identical electrical specs and SMC package, but only the HM3 version meets automotive environmental and reliability standards required for production vehicles.
What is the thermal resistance junction-to-ambient for the 1.5SMC510AHM3_B/H?
The 1.5SMC510AHM3_B/H has a typical thermal resistance of RθJA = 75 °C/W when mounted on the minimum recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Thermal Characteristics table on page 3 of Vishay document 88303. This value assumes still air convection and defines power derating above 25 °C ambient.
1.5SMC510AHM3_B/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:
- 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/H FAQ
1.How can I place an order for 1.5SMC510AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC510AHM3_B/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_B/H reliable?
The price and inventory of 1.5SMC510AHM3_B/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_B/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC510AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC510AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC510AHM3_B/H?
1.5SMC510AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC510AHM3_B/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_B/H?
For technical support, including 1.5SMC510AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC510AHM3_B/H requirements.
6.How does Aetrix verify that 1.5SMC510AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC510AHM3_B/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_B/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC510AHM3_B/H?
All 1.5SMC510AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC510AHM3_B/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_B/H part is unused and in its original packaging.
Return procedure for 1.5SMC510AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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