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Vishay General Semiconductor - Diodes Division P4SMA510AHM3_B/I
- Part No.:
- P4SMA510AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA510AHM3_B/I.pdf
- Description:
- TVS DIODE 434VWM 698VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,048
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Product details
Overview
P4SMA510AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMA (DO-214AC) package, rated for 510 V breakdown voltage (VBR = 485–535 V), 400 W peak pulse power (10/1000 µs), and clamping voltage of 698 V at 0.43 A peak pulse current. It protects power rails and signal lines in automotive and industrial systems against ESD and inductive switching transients.
For engineers reviewing the P4SMA510AHM3_B/I datasheet, P4SMA510AHM3_B/I pinout, P4SMA510AHM3_B/I application, or P4SMA510AHM3_B/I equivalent, this device is selected for high-voltage DC bus protection where AEC-Q101 qualification, low incremental surge resistance, and stable clamping under repetitive surges are required.
Technical Context
The P4SMA510AHM3_B/I operates as a unidirectional avalanche diode with glass-passivated junction, delivering precise voltage clamping during transient events. Its 10/1000 µs waveform rating supports 400 W peak pulse power up to 91 V and 300 W above - confirmed for P4SMA510A per datasheet note (1).
Designed for automotive-grade reliability, it meets AEC-Q101 qualification (suffix HM3_B denotes halogen-free, RoHS-compliant, AEC-Q101 qualified version), MSL Level 1 per J-STD-020, and UL 94 V-0 flammability rating. Junction temperature range spans −65 °C to +150 °C with thermal resistance RθJA = 120 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 485 V / 535 V - ensures reliable avalanche conduction onset within tight tolerance for predictable clamping behavior |
| VWM | 434 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 698 V at 0.43 A - clamped voltage during 10/1000 µs surge, defining worst-case overvoltage seen by protected circuit |
| PPPM | 400 W - peak transient energy absorption capability under standard 10/1000 µs waveform |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms), supporting robustness against power-line faults |
| TJ max | +150 °C - enables operation in under-hood automotive environments and high-ambient industrial enclosures |
| RθJA | 120 °C/W - defines thermal derating slope; requires adequate PCB copper area (0.2" × 0.2") for full power rating |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or low-side reference | Provides return path during clamping; must be routed with low-inductance trace to minimize voltage overshoot |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., 48 V rail) | Acts as high-impedance node until VBR exceeded; polarity marking critical for unidirectional installation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3_B suffix) | Validated for automotive electronics including engine control modules and ADAS power supplies |
| 400 W peak pulse power (10/1000 µs) | Withstands repeated ISO 7637-2 Pulse 1/2a/5a transients without degradation |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress |
| MSL Level 1, 260 °C reflow compatible | Supports standard SMT assembly without moisture sensitivity handling or baking |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for enclosed industrial and transportation equipment |
Applications
| Automotive Power Rail Protection | Industrial DC Link Surge Suppression |
|---|---|
|
Use Scenario: Protecting 48 V mild-hybrid battery management system (BMS) input against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery positive and chassis ground to clamp transients exceeding 434 V. Use Value: Limits voltage to ≤698 V during 400 W surges, preventing damage to downstream DC/DC converters and microcontrollers. |
Use Scenario: Safeguarding IGBT gate drivers in motor drives exposed to inductive kickback from 400 V DC link. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted across DC link capacitor terminals to absorb switching-induced spikes. Use Value: Clamps fast-rising transients within nanoseconds, reducing risk of gate oxide failure in power semiconductors. |
| Telecom Rectifier Output Protection | Renewable Energy Charge Controller Input |
|
Use Scenario: Securing output of telecom rectifiers feeding 48 V backplane systems against lightning-induced surges. IC Role / Device Role / Timing Role: High-VWM TVS installed at rectifier output to suppress common-mode transients entering distribution network. Use Value: Maintains 434 V standoff while clamping to 698 V, preserving PoE switch integrity and minimizing downtime. |
Use Scenario: Shielding solar charge controller inputs from voltage spikes caused by rapid PV string disconnection or cloud-edge transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between PV+ and ground to divert surge current away from MPPT circuitry. Use Value: Withstands 400 W pulses without parameter shift, ensuring long-term reliability in outdoor-rated installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ510A | Same VBR range (485–535 V), but SMB package (DO-214AA); 600 W PPPM, higher IPPM (0.67 A) | Larger footprint; better thermal dissipation but incompatible with SMA land pattern | Select when board layout allows larger pad area and higher surge margin is needed |
| 1.5KE510A | Through-hole DO-201 package; identical VBR/VC specs but lower PPPM (300 W), higher RθJA (70 °C/W) | Not suitable for automated SMT lines; limited to prototyping or legacy through-hole designs | Choose only for manual assembly or cost-sensitive non-automated production |
Compared with SMBJ510A and 1.5KE510A, the P4SMA510AHM3_B/I offers optimal balance of AEC-Q101 compliance, SMT compatibility, and 400 W surge capability in the smallest standardized surface-mount footprint - making it preferred for space-constrained automotive and industrial modules.
Availability
P4SMA510AHM3_B/I is available at Aetrix Electronics and suitable for automotive power systems, industrial motor drives, telecom rectifier outputs, and renewable energy charge controllers requiring stable component supply and long-lifecycle support.
Supply support for P4SMA510AHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive qualification.
The P4SMA series targets high-voltage transient suppression in automotive, industrial, and telecom infrastructure, designed specifically for AEC-Q101 compliance and robust performance under repetitive surge conditions.
FAQ
What is the clamping voltage of the P4SMA510AHM3_B/I under a 10/1000 µs surge?
The P4SMA510AHM3_B/I clamps to 698 V at its rated peak pulse current of 0.43 A under a 10/1000 µs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay document 88367 and defines the maximum voltage imposed on protected circuitry during standardized surge testing.
Is the P4SMA510AHM3_B/I suitable for automotive applications?
Yes, the P4SMA510AHM3_B/I is AEC-Q101 qualified (denoted by HM3_B suffix), halogen-free, RoHS-compliant, and rated for operation from −65 °C to +150 °C - meeting requirements for under-hood and powertrain electronics. Its MSL Level 1 rating also supports standard reflow assembly.
What does the "B" in P4SMA510AHM3_B/I signify?
The "B" in P4SMA510AHM3_B/I indicates the revision level for AEC-Q101 qualified versions covering the 250 V to 540 V range, as specified in Note (2) on page 3 of Vishay document 88367. It confirms compliance with automotive stress test requirements beyond commercial-grade variants.
How does the P4SMA510AHM3_B/I differ from bidirectional P4SMA510CA variants?
The P4SMA510AHM3_B/I is unidirectional, with cathode marked by a band and intended for DC line protection where polarity is fixed. Bidirectional variants like P4SMA510CA lack polarity marking and conduct in both directions - unsuitable for P4SMA510AHM3_B/I's target applications such as 48 V battery rails.
What PCB layout guidance applies to the P4SMA510AHM3_B/I for full 400 W rating?
To achieve the full 400 W peak pulse power rating, the P4SMA510AHM3_B/I must be mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the "Maximum Ratings" table. Smaller pads reduce thermal dissipation and require derating per Figure 2 in the datasheet.
P4SMA510AHM3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, 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):
- 430mA
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
P4SMA510AHM3_B/I FAQ
1.How can I place an order for P4SMA510AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA510AHM3_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 P4SMA510AHM3_B/I reliable?
The price and inventory of P4SMA510AHM3_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 P4SMA510AHM3_B/I is usually 5 days.
3.What payment methods are accepted for P4SMA510AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA510AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA510AHM3_B/I?
P4SMA510AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA510AHM3_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 P4SMA510AHM3_B/I?
For technical support, including P4SMA510AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA510AHM3_B/I requirements.
6.How does Aetrix verify that P4SMA510AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P4SMA510AHM3_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 P4SMA510AHM3_B/I meets industry standards.
7.What is the process for return or replacement of P4SMA510AHM3_B/I?
All P4SMA510AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA510AHM3_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 P4SMA510AHM3_B/I part is unused and in its original packaging.
Return procedure for P4SMA510AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA510AHM3_B/I Tags
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