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Vishay General Semiconductor - Diodes Division P4SMA11AHM3/H
- Part No.:
- P4SMA11AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA11AHM3/H.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,081
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Product details
Overview
P4SMA11AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 11 V breakdown voltage (VBR = 10.5–11.6 V at 1 mA), 9.4 V stand-off voltage (VWM), and 15.6 V clamping voltage (VC) at 25.6 A peak pulse current - designed to protect sensitive ICs and MOSFETs against inductive switching transients in automotive and industrial power rails.
For engineers reviewing the P4SMA11AHM3/H datasheet, P4SMA11AHM3/H pinout, P4SMA11AHM3/H application, or P4SMA11AHM3/H equivalent, this device delivers AEC-Q101 qualification, 400 W peak pulse power (10/1000 µs), low incremental surge resistance, and halogen-free RoHS compliance - critical for automotive-grade ESD and surge protection in compact PCB layouts.
Technical Context
The P4SMA11AHM3/H operates as a unidirectional clamping TVS diode with glass-passivated junction, enabling fast response (<1 ns) to transient overvoltages while maintaining low leakage (<5 µA at VWM). Its thermal resistance (RθJA = 120 °C/W) and junction temperature limit (TJ = 150 °C) support reliable operation under repetitive surge conditions on standard 5.0 mm × 5.0 mm copper pads.
Designed for automotive applications, it meets AEC-Q101 stress testing requirements and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. The HM3 suffix confirms halogen-free, RoHS-compliant construction with MSL Level 1 moisture sensitivity rating (peak reflow = 260 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 10.5–11.6 V at 1 mA test current - defines precise conduction onset for overvoltage clamping |
| Stand-off Voltage (VWM) | 9.4 V maximum - ensures no conduction during normal 11 V rail operation |
| Clamping Voltage (VC) | 15.6 V at 25.6 A IPPM - limits downstream voltage stress during 400 W transient events |
| Peak Pulse Power (PPPM) | 400 W (10/1000 µs waveform) - sustains high-energy surges without failure |
| Peak Pulse Current (IPPM) | 25.6 A - quantifies maximum surge current handled before clamping exceeds spec |
| Operating Temperature | -65 °C to +150 °C - supports under-hood automotive and industrial ambient extremes |
| Leakage Current (ID) | <5 µA at VWM - minimizes standby power loss in always-on circuits |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with cathode band marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); mounting pad layout per Vishay spec: 5.0 mm × 5.0 mm copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to protected circuit ground or low-side return path |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line (e.g., 12 V supply rail) - band denotes cathode end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive reliability including temperature cycling, HTRB, and ESD stress - required for engine control and ADAS modules |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental regulations and eliminates corrosive halogen emissions during reflow or failure |
| 400 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 1/2a/5a surges without degradation in automotive power networks |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal cycling |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow without moisture-induced popcorn failure |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control units (ECUs) against load dump and inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery rail and DC-DC input stage. Use Value: Limits transient voltage to ≤15.6 V during 400 W surges, preventing damage to downstream PMICs and microcontrollers. |
Use Scenario: Shielding analog sensor signal lines (e.g., pressure, temperature) in factory automation PLC I/O modules from EFT and surge coupling. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) TVS placed at connector interface to shunt fast transients before signal conditioning circuitry. Use Value: Clamps sub-100 ns ESD events to safe levels while adding negligible loading to 10 kHz sensor bandwidth. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeding Protection |
Use Scenario: Safeguarding AC/DC adapter primary-side rectifier outputs against lightning-induced surges on mains-connected devices. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across bulk capacitor to clamp overvoltage before secondary regulation. Use Value: Withstands repetitive 400 W pulses without parameter drift, extending adapter lifetime in surge-prone regions. |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras, wireless APs) from DC feed line transients caused by cable disconnects or lightning coupling. IC Role / Device Role / Timing Role: Unidirectional TVS on 48 V DC input rail, coordinated with upstream PoE controller OVP threshold. Use Value: Clamps 10/1000 µs surges to 15.6 V while maintaining <5 µA leakage - avoids false triggering of power management 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 |
|---|---|---|---|
| SMAJ11A-E3/5A | Same VBR range (10.5–11.6 V), but lower PPPM = 400 W only at TA ≤ 25 °C; derates faster above 25 °C (RθJA = 140 °C/W vs. 120 °C/W) | Less suitable for under-hood automotive use where ambient exceeds 50 °C | Select P4SMA11AHM3/H when sustained high-temperature surge immunity is required. |
| 1.5SMC11A | Higher package thermal mass (DO-214AB), larger footprint (7.11 mm × 6.22 mm); same VBR, VC, and PPPM rating but lower mounting density | Preferred only when board space allows larger SMC package and higher IFSM (50 A vs. 40 A) is needed | Choose P4SMA11AHM3/H for space-constrained automotive modules requiring AEC-Q101 and halogen-free compliance. |
Compared with SMAJ11A-E3/5A and 1.5SMC11A, the P4SMA11AHM3/H offers superior thermal performance (120 °C/W RθJA), AEC-Q101 qualification, and halogen-free construction - making it the optimal choice for high-reliability, thermally demanding automotive and industrial TVS applications where footprint and regulatory compliance are critical.
Availability
P4SMA11AHM3/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, consumer power adapters, and telecom DC feeding systems requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P4SMA11AHM3/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, efficiency, and application-specific optimization.
The P4SMA series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, high pulse power, and stable clamping are mandatory.
FAQ
What is the clamping voltage of the P4SMA11AHM3/H at its rated peak pulse current?
The P4SMA11AHM3/H has a maximum clamping voltage (VC) of 15.6 V at 25.6 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and ensures downstream components remain within safe operating voltage limits during surge events. The P4SMA11AHM3/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is the P4SMA11AHM3/H suitable for automotive applications?
Yes, the P4SMA11AHM3/H is AEC-Q101 qualified and specifically designated for automotive use via the HM3 suffix and "_H" packaging code. It passes stress tests including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D. The P4SMA11AHM3/H is commonly deployed in engine control units, body control modules, and ADAS power supplies where transient immunity and long-term reliability are critical.
What does the "HM3" suffix indicate in P4SMA11AHM3/H?
The "HM3" suffix in P4SMA11AHM3/H denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2. It also confirms MSL Level 1 rating (260 °C peak reflow) and AEC-Q101 qualification. The "/H" indicates 7-inch tape-and-reel packaging (1800 units per reel), distinct from "/I" (13-inch reel, 7500 units).
How does the P4SMA11AHM3/H compare to bidirectional TVS diodes like P4SMA11CA?
The P4SMA11AHM3/H is unidirectional and intended for DC rail protection where polarity is fixed (e.g., 12 V supply), offering tighter VBR tolerance and lower leakage than bidirectional variants. In contrast, P4SMA11CA provides symmetrical clamping for AC or floating signal lines but exhibits higher leakage and wider VBR spread. The P4SMA11AHM3/H is not interchangeable with P4SMA11CA without circuit-level validation of polarity and leakage impact.
What is the thermal resistance of the P4SMA11AHM3/H, and how does it affect layout design?
The P4SMA11AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. This value requires adequate copper area and minimal thermal vias to sustain 400 W pulse power without exceeding 150 °C junction temperature. Layouts using smaller pads or no thermal relief will experience significant derating - the P4SMA11AHM3/H must be placed per Vishay's recommended pad dimensions (0.074" × 0.208") for full specification compliance.
P4SMA11AHM3/H 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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 25.6A
- 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)
P4SMA11AHM3/H FAQ
1.How can I place an order for P4SMA11AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA11AHM3/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 P4SMA11AHM3/H reliable?
The price and inventory of P4SMA11AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA11AHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA11AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA11AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA11AHM3/H?
P4SMA11AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA11AHM3/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 P4SMA11AHM3/H?
For technical support, including P4SMA11AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA11AHM3/H requirements.
6.How does Aetrix verify that P4SMA11AHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA11AHM3/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 P4SMA11AHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA11AHM3/H?
All P4SMA11AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA11AHM3/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 P4SMA11AHM3/H part is unused and in its original packaging.
Return procedure for P4SMA11AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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