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Vishay General Semiconductor - Diodes Division P4SMA11AHM3/I
- Part No.:
- P4SMA11AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA11AHM3/I.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,765
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Product details
Overview
P4SMA11AHM3/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 a 11 V breakdown voltage (VBR min/max = 10.5–11.6 V at 1 mA), 9.4 V standoff voltage (VWM), 15.6 V clamping voltage (VC) at 25.6 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 control systems.
For engineers reviewing the P4SMA11AHM3/I datasheet, P4SMA11AHM3/I pinout, P4SMA11AHM3/I application, or P4SMA11AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction, low incremental surge resistance, and verified clamping performance under repetitive 0.01% duty cycle surges.
Technical Context
The P4SMA11AHM3/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1 ns), enabling reliable suppression of ESD and inductive switching transients.
Thermally, it supports operation from −65 °C to +150 °C junction temperature, with RθJA = 120 °C/W and RθJL = 30 °C/W. Its 40 A IFSM (8.3 ms half-sine) and 3.3 W steady-state power dissipation allow robust handling of both transient and sustained overvoltage events on DC rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 10.5–11.6 V at 1 mA - defines precise conduction onset for accurate overvoltage protection |
| Standoff Voltage VWM | 9.4 V - maximum continuous reverse voltage before leakage exceeds 5 µA |
| Clamping Voltage VC | 15.6 V at 25.6 A (10/1000 µs) - limits downstream voltage stress during surge events |
| Peak Pulse Power PPPM | 400 W - sustains single high-energy transients without failure under standard test conditions |
| Peak Pulse Current IPPM | 25.6 A - quantifies maximum surge current the device safely clamps |
| Operating Temperature Range | −65 °C to +150 °C - enables deployment in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per stress testing requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to protected line's lower-potential side (e.g., GND or return path) |
| Cathode | Reverse conduction terminal / Clamping output | Connected to protected line's higher-potential side (e.g., VIN, signal rail); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V systems |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive electronics including body control modules and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements |
| MSL Level 1 (260 °C peak reflow) | Supports standard SMT assembly without moisture sensitivity handling precautions |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs of BCM microcontrollers from load-dump transients and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between VBAT and GND, upstream of LDO regulators. Use Value: Limits voltage to ≤15.6 V during 400 W surges, preventing latch-up or permanent damage to 16 V-rated power management ICs. |
Use Scenario: Safeguarding 24 V digital input channels of programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff protector on optocoupler input side, absorbing inductive kickback from solenoid drivers. Use Value: Maintains <9.4 V standby leakage while clamping 25.6 A transients to 15.6 V, preserving signal integrity and isolation barrier integrity. |
| Automotive Sensor Signal Line (e.g., ABS Wheel Speed) | Consumer Appliance Motor Driver Interface |
Use Scenario: Shielding differential analog outputs of wheel speed sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on each signal line relative to chassis ground. Use Value: Delivers sub-1 ns response and <15.6 V clamping to prevent comparator saturation or ADC offset errors in timing-critical ABS algorithms. |
Use Scenario: Suppressing flyback voltage spikes generated by brushed DC motor commutation in washing machine control boards. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals, referenced to system GND. Use Value: Absorbs 400 W energy pulses without degradation, extending MOSFET lifespan and eliminating need for snubber RC networks. |
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 VWM (9.4 V), identical SMA package, but rated for 400 W with 8.3 ms surge rating only (not 10/1000 µs); no AEC-Q101 qualification | Commercial-grade use only; unsuitable for automotive production | Select when cost sensitivity outweighs automotive qualification and long-duration surge immunity |
| 1.5SMC11A | Higher package thermal mass (DO-214AB), 1500 W peak power, but larger footprint and 200 mA higher leakage at VWM | Preferred for high-reliability industrial power supplies where board space permits larger package | Choose when higher surge margin is required and PCB layout allows DO-214AB footprint |
Compared with SMAJ11A-E3/5A and 1.5SMC11A, the P4SMA11AHM3/I uniquely combines AEC-Q101 qualification, halogen-free compliance, and optimized 400 W/10/1000 µs clamping in the compact SMA outline - making it the preferred choice for space-constrained automotive and industrial edge nodes requiring certified reliability.
Availability
P4SMA11AHM3/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and consumer appliance motor control systems requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for P4SMA11AHM3/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 application-specific optimization.
The P4SMA Series targets surface-mount transient suppression in automotive, industrial, and computing applications - engineered for high surge immunity, low clamping ratio, and seamless integration into automated SMT lines.
FAQ
What is the clamping voltage of the P4SMA11AHM3/I under a 10/1000 µs surge?
The P4SMA11AHM3/I clamps to a maximum of 15.6 V at 25.6 A peak pulse current under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and reflects worst-case voltage seen by downstream circuitry during surge events - critical for ensuring compatibility with 16 V-rated ICs and regulators in automotive and industrial designs.
Is the P4SMA11AHM3/I suitable for automotive applications?
Yes, the P4SMA11AHM3/I is AEC-Q101 qualified (denoted by the HM3 suffix), meaning it has passed rigorous stress tests for temperature cycling, humidity, mechanical shock, and surge endurance required for automotive electronics. It is widely deployed in body control modules, sensor interfaces, and infotainment power rails where reliability under harsh environmental conditions is mandatory.
What does the "HM3" suffix indicate in P4SMA11AHM3/I?
The "HM3" suffix in P4SMA11AHM3/I specifies halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" denotes AEC-Q101 compliance, "M" indicates halogen-free molding compound, and "3" confirms RoHS compliance - distinguishing it from commercial-grade variants like E3 or M3 that lack automotive qualification.
How does the P4SMA11AHM3/I differ from bidirectional TVS diodes like P4SMA11CA?
The P4SMA11AHM3/I is unidirectional and conducts only in reverse bias above VBR, making it ideal for DC power line protection with polarity awareness. In contrast, P4SMA11CA is bidirectional and symmetric - suited for AC signal lines or differential buses. The unidirectional design of P4SMA11AHM3/I provides lower leakage at VWM and avoids forward conduction issues on polarized rails.
What is the maximum steady-state power dissipation of the P4SMA11AHM3/I?
The P4SMA11AHM3/I has a maximum steady-state power dissipation (PD) of 3.3 W at TA = 50 °C on an infinite heatsink. This rating governs continuous leakage power handling and must be derated linearly above 50 °C ambient using the specified thermal resistance (RθJA = 120 °C/W). For typical PCB layouts with 0.2" × 0.2" copper pads, actual usable PD is ~1.0 W.
P4SMA11AHM3/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):
- 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/I FAQ
1.How can I place an order for P4SMA11AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA11AHM3/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 P4SMA11AHM3/I reliable?
The price and inventory of P4SMA11AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA11AHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA11AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA11AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA11AHM3/I?
P4SMA11AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA11AHM3/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 P4SMA11AHM3/I?
For technical support, including P4SMA11AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA11AHM3/I requirements.
6.How does Aetrix verify that P4SMA11AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA11AHM3/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 P4SMA11AHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA11AHM3/I?
All P4SMA11AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA11AHM3/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 P4SMA11AHM3/I part is unused and in its original packaging.
Return procedure for P4SMA11AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA11AHM3/I Tags
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