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Vishay General Semiconductor - Diodes Division P4SMA10AHM3/I
- Part No.:
- P4SMA10AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA10AHM3/I.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,283
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Product details
Overview
P4SMA10AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping transient overvoltages on power and signal lines. It features a 10 V standoff voltage (VWM), 14.5 V maximum clamping voltage at 27.6 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial electronics.
For engineers reviewing the P4SMA10AHM3/I datasheet, P4SMA10AHM3/I pinout, P4SMA10AHM3/I application, or P4SMA10AHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), clamping performance under surge conditions, and direct alternatives for circuit protection design.
Technical Context
The P4SMA10AHM3/I operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 9.5–10.5 V breakdown range (VBR at 1 mA). Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for suppressing ESD and inductive switching transients.
Rated for 150 °C max junction temperature and qualified to AEC-Q101, it supports automotive-grade reliability with halogen-free, RoHS-compliant construction (HM3 suffix), matte tin-plated leads, and MSL Level 1 moisture sensitivity per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 8.55 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 9.5–10.5 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping) | 14.5 V at 27.6 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on downstream components. |
| PPPM | 400 W - Sustains single 10/1000 µs surges without failure; derates to 300 W above 91 V per spec. |
| IPPM | 27.6 A - Peak surge current capability under standard test waveform; determines minimum trace width and layout robustness. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance; informs heatsinking needs for sustained power dissipation. |
| TJ max | 150 °C - Maximum allowable junction temperature; sets upper limit for ambient + self-heating in sealed enclosures. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; defines directionality of clamping action. |
| Cathode | Avalanche conduction path / Clamping node | Connected to higher-potential side (e.g., VCC or signal line); sinks surge current to ground or rail. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensors; supports long-term reliability under thermal cycling and vibration. |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance requirements for global OEM supply chains without compromising surge robustness or thermal performance. |
| 400 W peak pulse power (10/1000 µs) | Handles high-energy transients from relay coil collapse or load dump without degradation; suitable for 12 V automotive systems. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping; protects 3.3 V/5 V logic and analog front-ends with tight margin. |
| MSL Level 1, 260 °C reflow compatible | Enables standard SMT assembly without pre-baking; reduces manufacturing complexity and cost. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V power rails in body control modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes to prevent damage to voltage regulators and microcontrollers. Use Value: Withstands 400 W surges and maintains VC ≤ 14.5 V, ensuring downstream ICs remain within absolute maximum ratings during ISO 7637-2 Pulse 5a events. |
Use Scenario: Shielding analog outputs of pressure or temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed at connector interface to shunt sub-100 ns ESD pulses. Use Value: Sub-1 ns response time and 14.5 V clamping limit sensor output swing to safe levels, preserving ADC accuracy and preventing latch-up. |
| Consumer Device USB Port Protection | Telecom Signal Line Surge Suppression |
Use Scenario: Safeguarding USB 2.0 data lines (D+/D−) in portable chargers and docking stations from human-body-model ESD. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed between data line and ground to clamp ±8 kV contact discharge. Use Value: 14.5 V clamping voltage prevents damage to USB transceivers while maintaining signal integrity up to 480 Mbps. |
Use Scenario: Protecting RS-485 transceiver inputs in base station backhaul equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level surge suppression on differential bus lines prior to isolation or receiver stage. Use Value: 400 W peak power rating and 27.6 A IPPM enable survival of 10/700 µs telecom surge waveforms per ITU-T K.21. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A-E3/52 | Same VWM (8.55 V), but SMB package (DO-214AA); 600 W PPPM, higher IPPM (32.4 A), RθJA = 100 °C/W. | Better surge handling and thermal performance, but larger footprint; requires PCB redesign. | Select when higher surge margin is needed and board space allows SMB package. |
| 1.5SMC10A | Same VWM and VBR, but SMC (DO-214AB) package; 1500 W PPPM, 123 A IPPM, RθJA = 65 °C/W. | Designed for high-energy industrial transients; overqualified for consumer-grade protection. | Choose only for legacy designs using SMC or where >1 kW surge immunity is mandated. |
Compared with SMBJ10A-E3/52 and 1.5SMC10A, the P4SMA10AHM3/I offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and sufficient 400 W surge capacity for automotive and industrial edge nodes - without over-engineering or layout change overhead.
Availability
P4SMA10AHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with halogen-free, AEC-Q101-qualified TVS protection.
Supply support for P4SMA10AHM3/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, and protection devices with emphasis on reliability, efficiency, and automotive-grade validation.
The P4SMA Series targets cost-sensitive, high-volume transient suppression applications across automotive, industrial, and consumer markets - delivering standardized TVS performance in compact, automated-placement-ready packages.
FAQ
What is the clamping voltage of the P4SMA10AHM3/I under a 10/1000 µs surge?
The P4SMA10AHM3/I has a maximum clamping voltage (VC) of 14.5 V at 27.6 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the highest voltage imposed on the protected circuit during surge events - critical for ensuring compatibility with 3.3 V or 5 V logic interfaces. The P4SMA10AHM3/I maintains this clamping performance across its rated junction temperature range.
Is the P4SMA10AHM3/I qualified for automotive applications?
Yes, the P4SMA10AHM3/I carries the HM3 suffix, indicating halogen-free, RoHS-compliant construction and full AEC-Q101 qualification. It is specifically tested for reliability under automotive stress conditions including temperature cycling, mechanical shock, and humidity exposure - making it suitable for use in engine control units, infotainment systems, and ADAS sensor modules. The P4SMA10AHM3/I meets these requirements without derating.
What does the "HM3/I" suffix mean in P4SMA10AHM3/I?
The "HM3" denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction; "I" specifies packaging in 13-inch diameter plastic tape and reel (7500 units per reel). This ordering code ensures traceability, compliance, and compatibility with high-speed SMT placement equipment. The P4SMA10AHM3/I is not interchangeable with non-HM3 variants in automotive production due to qualification and material requirements.
Can the P4SMA10AHM3/I be used in bidirectional configurations?
No - the P4SMA10AHM3/I is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires a CA-suffixed part such as P4SMA10CA. Using the P4SMA10AHM3/I in reverse-biased AC signal paths would result in forward conduction and potential failure. Always verify polarity during PCB layout; the P4SMA10AHM3/I must be oriented with cathode toward the protected line's higher potential.
What is the thermal resistance of the P4SMA10AHM3/I, and how does it affect layout?
The P4SMA10AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" copper pads. This value directly impacts safe power dissipation: at 3.3 W steady-state, junction temperature rise reaches ~400 °C - confirming that the device is intended for transient-only duty, not continuous power. Layout must follow Vishay's recommended pad dimensions to achieve this RθJA; undersized pads will cause thermal runaway. The P4SMA10AHM3/I relies on short-duration surge energy, not sustained heating.
P4SMA10AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 27.6A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
P4SMA10AHM3/I FAQ
1.How can I place an order for P4SMA10AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA10AHM3/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 P4SMA10AHM3/I reliable?
The price and inventory of P4SMA10AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA10AHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA10AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA10AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA10AHM3/I?
P4SMA10AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA10AHM3/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 P4SMA10AHM3/I?
For technical support, including P4SMA10AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA10AHM3/I requirements.
6.How does Aetrix verify that P4SMA10AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA10AHM3/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 P4SMA10AHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA10AHM3/I?
All P4SMA10AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA10AHM3/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 P4SMA10AHM3/I part is unused and in its original packaging.
Return procedure for P4SMA10AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA10AHM3/I Tags
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