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Vishay General Semiconductor - Diodes Division P4SMA10AHM3_A/I
- Part No.:
- P4SMA10AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA10AHM3_A/I.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,626
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Product details
Overview
P4SMA10AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 10 V standoff voltage (VWM), 14.5 V maximum clamping voltage at 27.6 A peak pulse current, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the P4SMA10AHM3_A/I datasheet, P4SMA10AHM3_A/I pinout, P4SMA10AHM3_A/I application, or P4SMA10AHM3_A/I equivalent, this device is selected for robust overvoltage protection in automotive ECUs, industrial sensor interfaces, and DC power rail conditioning where low clamping voltage, fast response (<1 ns), and halogen-free RoHS compliance are required.
Technical Context
The P4SMA10AHM3_A/I operates as a unidirectional avalanche diode with glass-passivated junction, enabling precise breakdown at 9.5–10.5 V (tested at 1 mA). Its clamping action limits transient-induced voltage excursions to ≤14.5 V under 27.6 A 10/1000 µs pulses, with low incremental surge resistance ensuring minimal voltage overshoot during ESD or load-switching events.
Thermally, it supports operation from –65 °C to +150 °C junction temperature, with RθJA = 120 °C/W and RθJL = 30 °C/W. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification-verified per stress test conditions including high-temperature reverse bias and temperature cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 8.55 V - Maximum continuous reverse voltage before conduction; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 9.5–10.5 V at 1 mA - Precise avalanche initiation range ensures consistent turn-on across production lots. |
| VC (Clamping) | 14.5 V at IPPM = 27.6 A - Limits transient voltage seen by downstream ICs or MOSFETs during 10/1000 µs surges. |
| PPPM | 400 W - Sustains 400 W peak pulse power without degradation; derates to 300 W above 91 V models (not applicable here). |
| IFSM | 40 A - Withstands 8.3 ms half-sine surge current, supporting protection of 12 V automotive power rails against load dump. |
| TJ max | +150 °C - Enables reliable operation in under-hood automotive environments and industrial enclosures without forced cooling. |
| Package | SMA (DO-214AC) - Surface-mount footprint compatible with automated assembly; 0.2" × 0.2" copper pad layout recommended for thermal performance. |
Pinout & Package
SMA (DO-214AC) package: molded plastic case with matte tin-plated leads, cathode indicated by band. MSL Level 1 (260 °C peak reflow), UL 94 V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (reverse-biased operation) | Connected to protected line (e.g., 12 V rail); current flows into anode during transient clamp event. |
| Cathode | Current exit terminal (reverse-biased operation) | Connected to ground or lower-potential reference; polarity marking (band) enables correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors per stress test requirements. |
| Halogen-free & RoHS-compliant (HM3) | Meets EU Directive 2011/65/EU and JESD201 Class 2 whisker resistance; suitable for green manufacturing programs. |
| 400 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive switching (e.g., solenoid drivers) without failure or parameter shift. |
| Low clamping voltage (14.5 V) | Protects 12 V-rated ICs (e.g., CAN transceivers, microcontrollers) with ≥1.5 V safety margin below absolute maximum ratings. |
| Fast response time (<1 ns) | Activates before sensitive components experience damaging overvoltage; critical for ESD and lightning-induced surge suppression. |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protects LIN bus interface and relay driver outputs in BCM against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply rail and ground, clamping transients before they reach MCU I/O and level-shifters. Use Value: Maintains system uptime by preventing latch-up or gate oxide damage in 3.3 V/5 V logic powered from switched 12 V sources. |
Use Scenario: Shields analog output lines (4–20 mA, 0–10 V) of pressure/temperature sensors from field wiring induced surges. IC Role / Device Role / Timing Role: Standoff-connected TVS on sensor output path, absorbing common-mode transients while preserving signal integrity. Use Value: Eliminates need for external RC filtering or opto-isolation in Class I, Division 2 hazardous location designs. |
| DC Power Rail Protection (12 V) | USB/Serial Interface ESD Protection |
Use Scenario: Installed on input side of buck converter feeding infotainment head unit, suppressing battery line transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main 12 V distribution node, coordinated with secondary TVS on downstream rails. Use Value: Reduces risk of catastrophic failure in high-current power stages by limiting voltage excursion to ≤14.5 V during 100 A load dump events. |
Use Scenario: Placed on USB D+/D− and UART TX/RX lines of telematics control unit exposed to user-accessible connectors. IC Role / Device Role / Timing Role: Fast-acting transient suppressor meeting IEC 61000-4-2 ±15 kV contact discharge requirement. Use Value: Prevents communication lockup and firmware corruption caused by ESD events without adding signal delay or capacitance penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10AHE3_A/H | Same VWM (8.55 V), identical VC (14.5 V), but rated for 400 W with 1.5× higher IPPM (42.1 A); different thermal resistance (RθJA = 100 °C/W). | Preferred for higher ambient temperature environments (>85 °C) due to improved thermal dissipation. | Select SMAJ10AHE3_A/H when board-level thermal management is limited and sustained surge duty exceeds 0.01%. |
| 1.5SMC10A | Same electrical specs but in larger SMC (DO-214AB) package; 1.5× higher power rating (1500 W), higher IFSM (200 A), no AEC-Q101 qualification. | Suitable for non-automotive industrial power supplies requiring higher surge margin but not space-constrained layouts. | Choose 1.5SMC10A only if PCB real estate allows larger footprint and automotive qualification is not required. |
Compared with SMAJ10AHE3_A/H, P4SMA10AHM3_A/I offers tighter thermal budget control in compact automotive modules; versus 1.5SMC10A, it trades surge headroom for AEC-Q101 compliance and SMA footprint compatibility with high-density layouts.
Availability
P4SMA10AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and 12 V DC power rail protection requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P4SMA10AHM3_A/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, automotive qualification, and green manufacturing.
The P4SMA Series targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and consumer systems-designed specifically for surface-mount compatibility, automated placement, and robust surge immunity in harsh environments.
FAQ
What is the breakdown voltage tolerance for P4SMA10AHM3_A/I?
The P4SMA10AHM3_A/I has a specified breakdown voltage (VBR) range of 9.5 V to 10.5 V at 1 mA test current, per Vishay Document 88367. This ±5% tolerance ensures predictable clamping onset across temperature and production lots, critical for protecting 12 V systems where overvoltage margins are tight. The P4SMA10AHM3_A/I maintains this specification under standard test conditions (TA = 25 °C).
Is P4SMA10AHM3_A/I suitable for bidirectional transient suppression?
No, P4SMA10AHM3_A/I is a unidirectional TVS diode, as confirmed by its "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P4SMA10CA). Using P4SMA10AHM3_A/I in AC-coupled or symmetrical signal paths would result in forward conduction during negative transients, potentially causing failure. For bidirectional protection, select P4SMA10CAHM3_A/I instead.
Does P4SMA10AHM3_A/I meet automotive qualification standards?
Yes, P4SMA10AHM3_A/I is AEC-Q101 qualified, as explicitly stated in the Vishay P4SMA Series datasheet (Rev. 09-Jan-2024, Doc. #88367) under Mechanical Data and Ordering Information sections. The "HM3" suffix denotes halogen-free, RoHS-compliant construction with full AEC-Q101 stress testing-including HTGB, HTRB, and temperature cycling-making it suitable for under-hood and chassis-mounted automotive applications.
What is the maximum clamping voltage of P4SMA10AHM3_A/I under surge conditions?
The maximum clamping voltage (VC) of P4SMA10AHM3_A/I is 14.5 V at 27.6 A peak pulse current (IPPM) with a 10/1000 µs waveform, per Table 1 in Vishay Document 88367. This value represents the upper limit of voltage imposed on protected circuitry during worst-case transient events, providing a 1.5 V safety margin below the absolute maximum rating of typical 16 V-tolerant automotive ICs.
Can P4SMA10AHM3_A/I be used in place of P4SMA10A-E3/61?
P4SMA10AHM3_A/I and P4SMA10A-E3/61 share identical electrical specifications (VWM, VBR, VC, PPPM) but differ in qualification and packaging: P4SMA10AHM3_A/I is AEC-Q101 qualified and halogen-free (HM3), supplied in 13" tape (I), while P4SMA10A-E3/61 is commercial-grade (E3), non-halogen-free, and supplied in 7" tape (61). Substitution requires validation of automotive qualification and halogen-free requirements in the target design.
P4SMA10AHM3_A/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):
- 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_A/I FAQ
1.How can I place an order for P4SMA10AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA10AHM3_A/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_A/I reliable?
The price and inventory of P4SMA10AHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA10AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA10AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA10AHM3_A/I?
P4SMA10AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA10AHM3_A/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_A/I?
For technical support, including P4SMA10AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA10AHM3_A/I requirements.
6.How does Aetrix verify that P4SMA10AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA10AHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA10AHM3_A/I?
All P4SMA10AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA10AHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for P4SMA10AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA10AHM3_A/I Tags
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