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Vishay General Semiconductor - Diodes Division P4SMA150AHM3/I
- Part No.:
- P4SMA150AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA150AHM3/I.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,568
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Product details
Overview
P4SMA150AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 150 V standoff voltage (VWM), 143–158 V breakdown voltage (VBR at 1 mA), and 207 A peak pulse current (IPPM) under 10/1000 µs waveform - designed to protect MOSFETs, ICs, and sensor signal lines in automotive power electronics against inductive switching transients.
For engineers reviewing the P4SMA150AHM3/I datasheet, P4SMA150AHM3/I pinout, P4SMA150AHM3/I application, or P4SMA150AHM3/I equivalent, this device delivers AEC-Q101 qualification, halogen-free RoHS compliance, 400 W peak pulse power (derated to 300 W above 91 V), low clamping voltage (207 V), and MSL Level 1 moisture sensitivity - critical for high-reliability automotive and industrial PCB designs requiring robust ESD and surge immunity.
Technical Context
The P4SMA150AHM3/I operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche behavior and fast response (<1 ns). Its thermal resistance (RθJA = 120 °C/W) and junction temperature range (–65 °C to +150 °C) support operation on standard 5.0 mm × 5.0 mm copper pads without forced cooling.
It meets UL 497B recognition (QVGQ2) and JESD201 Class 2 whisker resistance, with 3.3 W steady-state power dissipation (PD) and 40 A non-repetitive forward surge rating (IFSM). The device is optimized for transient suppression in DC power rails and low-capacitance signal paths where minimal leakage (<1 µA at VWM) and tight VBR tolerance (±5%) are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V–48 V systems. |
| VBR (min/max) | 143 V / 158 V at 1 mA - tight 5% tolerance ensures predictable turn-on across temperature and production lots. |
| VC @ IPPM | 207 V - clamping voltage during 10/1000 µs surge; limits downstream voltage stress to <207 V at 207 A. |
| IPPM | 207 A - peak surge current handling capacity; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) compliance with proper layout. |
| PPPM | 400 W - peak pulse power rating (10/1000 µs); derates to 300 W above 91 V per spec, enabling use up to 150 V systems. |
| ID @ VWM | <1 µA - ultra-low reverse leakage preserves battery life and signal integrity in always-on sensor circuits. |
| TJ max | +150 °C - extended junction temperature rating allows deployment in under-hood automotive environments. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C reflow peak), matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to system ground or low-side return path; enables unidirectional clamping from rail to GND. |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., 12 V supply or CAN-H); defines clamping direction and polarity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, ADAS, and body electronics. |
| Glass passivated junction | Ensures stable avalanche characteristics over lifetime and prevents parameter drift due to humidity or contamination. |
| Low profile SMA package | Enables automated SMT placement and fits high-density layouts; footprint compatible with industry-standard DO-214AC land patterns. |
| 400 W peak pulse power | Provides headroom for repetitive surge events in 12 V/24 V vehicle electrical systems without thermal runaway. |
| UL 497B recognized | Meets safety requirements for telecom and industrial protectors (file E136766), simplifying end-equipment certification. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Suppressing load-dump transients (up to 60 V) and alternator ripple on 12 V/24 V battery-fed ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges before they reach LDOs or microcontrollers. Use Value: Limits rail voltage to ≤207 V during 207 A pulses, preventing latch-up or gate oxide damage in downstream FETs and PMICs. |
Use Scenario: Protecting analog outputs of pressure/temperature sensors connected to long harnesses in factory automation. IC Role / Device Role / Timing Role: Low-leakage TVS shunting induced EFT bursts (IEC 61000-4-4) on 0–5 V or 4–20 mA signal lines. Use Value: Maintains signal fidelity with <1 µA leakage at 128 V, while clamping transients within nanoseconds to preserve ADC accuracy. |
| Telecom DC Power Interface | Consumer Device USB Port Surge Guard |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) against lightning-induced surges on 48 V input rails. IC Role / Device Role / Timing Role: Primary clamping element upstream of DC-DC converters, coordinated with MOVs for multi-stage protection. Use Value: Delivers 400 W pulse handling with 120 °C/W RθJA, enabling compact heatsink-free design in sealed enclosures. |
Use Scenario: Adding secondary-level surge immunity to USB-C power delivery inputs in portable medical monitors. IC Role / Device Role / Timing Role: Fast-response TVS on VBUS line to absorb contact ESD (±15 kV air) and cable discharge events. Use Value: Achieves <1 ns response time and 207 V clamping, reducing risk of USB controller latch-up during field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A-E3/5A | Same VWM/VBR specs but lower PPPM (400 W vs. P4SMA150AHM3/I's 400 W), identical SMA package, no AEC-Q101 qualification. | Commercial-grade only; not validated for automotive temperature cycling or humidity testing. | Select when cost sensitivity outweighs automotive qualification requirements and AEC-Q101 is not mandated. |
| 1.5SMC150AHE3_A | Higher package thermal mass (SMC/DO-214AB), same 150 V rating, 400 W PPPM, AEC-Q101 qualified, but larger footprint (7.11 × 6.22 mm vs. SMA's 4.50 × 2.79 mm). | Preferred for higher-power or thermally constrained designs where board space permits larger case. | Choose when enhanced thermal performance or legacy SMC footprint compatibility is prioritized over miniaturization. |
Compared with SMAJ150A-E3/5A and 1.5SMC150AHE3_A, the P4SMA150AHM3/I uniquely combines AEC-Q101 qualification, halogen-free construction, and the smallest qualified SMA footprint - making it optimal for space-constrained automotive modules requiring zero compromise on reliability or regulatory compliance.
Availability
P4SMA150AHM3/I is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface, telecom DC input, and consumer USB protection applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA150AHM3/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 is engineered for high-energy transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance, AEC-Q101 validation, and scalable packaging from SMA to SMC.
FAQ
What is the clamping voltage of the P4SMA150AHM3/I under a 10/1000 µs surge?
The P4SMA150AHM3/I has a maximum clamping voltage (VC) of 207 V at its rated peak pulse current (IPPM) of 207 A under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and reflects worst-case clamping performance at TA = 25 °C with recommended 5.0 mm × 5.0 mm copper pads. The P4SMA150AHM3/I maintains this clamping level across its operational temperature range, ensuring predictable overvoltage protection for downstream components.
Is the P4SMA150AHM3/I qualified for automotive applications?
Yes, the P4SMA150AHM3/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's P4SMA series datasheet (Rev. 09-Jan-2024). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 requirements. The P4SMA150AHM3/I is specifically intended for under-hood and chassis-mounted automotive electronics where reliability under thermal, mechanical, and electrical stress is mandatory.
What does the "HM3" suffix indicate in P4SMA150AHM3/I?
The "HM3" suffix in P4SMA150AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering information table, HM3 indicates both environmental compliance (halogen-free molding compound) and automotive-grade reliability validation. The "I" denotes 7500-unit reel packaging on 13-inch diameter tape - distinct from "H" (1800-unit 7-inch reel). The P4SMA150AHM3/I thus satisfies Tier 1 automotive supply chain requirements for material content and performance consistency.
How does the P4SMA150AHM3/I compare to bidirectional TVS diodes like P4SMA150CA?
The P4SMA150AHM3/I is unidirectional and features a cathode band for polarity-sensitive placement, whereas P4SMA150CA is bidirectional with no polarity marking and symmetric clamping in both directions. The P4SMA150AHM3/I offers lower leakage (<1 µA at 128 V) and is preferred for DC rail protection where polarity is fixed; P4SMA150CA suits AC-coupled or differential signal lines. Both share identical VWM, VBR, and PPPM ratings, but only the P4SMA150AHM3/I carries AEC-Q101 and halogen-free certification.
What is the maximum operating junction temperature for the P4SMA150AHM3/I?
The P4SMA150AHM3/I has a maximum operating junction temperature (TJ) of +150 °C, as specified in the Absolute Maximum Ratings table of Vishay document 88367. This rating enables reliable operation in high-ambient environments such as automotive engine compartments or industrial motor drives. Derating curves in Figure 2 confirm usable power dissipation down to 0 W at +150 °C ambient, and the P4SMA150AHM3/I's RθJA of 120 °C/W allows thermal design using standard PCB copper area without additional heatsinking.
P4SMA150AHM3/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):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 1.4A
- 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)
P4SMA150AHM3/I FAQ
1.How can I place an order for P4SMA150AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA150AHM3/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 P4SMA150AHM3/I reliable?
The price and inventory of P4SMA150AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA150AHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA150AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA150AHM3/I?
P4SMA150AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA150AHM3/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 P4SMA150AHM3/I?
For technical support, including P4SMA150AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150AHM3/I requirements.
6.How does Aetrix verify that P4SMA150AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA150AHM3/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 P4SMA150AHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA150AHM3/I?
All P4SMA150AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150AHM3/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 P4SMA150AHM3/I part is unused and in its original packaging.
Return procedure for P4SMA150AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA150AHM3/I Tags
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