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Vishay General Semiconductor - Diodes Division P4SMA150AHE3_A/I
- Part No.:
- P4SMA150AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA150AHE3_A/I.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA150AHE3_A/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 test current, and 400 W peak pulse power (10/1000 µs waveform). It provides clamping protection for automotive-grade power rails and signal lines in engine control units and ADAS sensor interfaces.
For engineers reviewing the P4SMA150AHE3_A/I datasheet, P4SMA150AHE3_A/I pinout, P4SMA150AHE3_A/I application, or P4SMA150AHE3_A/I equivalent, this AEC-Q101 qualified TVS offers verified surge immunity up to 207 A peak pulse current (IPPM), 207 V maximum clamping voltage (VC), and low incremental surge resistance for robust ESD and load-dump transient suppression in harsh environments.
Technical Context
This unidirectional TVS operates with a cathode-band polarity marking and uses glass-passivated junction technology for stable breakdown behavior and fast response time (<1 ns). Its thermal resistance (RθJA = 120 °C/W) and junction temperature limit (TJ max = 150 °C) support operation on standard 0.2" × 0.2" copper pads without forced cooling.
The device delivers 400 W peak pulse power per 10/1000 µs waveform (derated to 300 W above 91 V), with 1.4 A maximum reverse leakage (ID) at 128 V standoff and 0.108 %/°C temperature coefficient of VBR - enabling predictable clamping across automotive temperature ranges (−65 °C to +150 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 128 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 143–158 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on during transients without premature conduction |
| VC (Clamping Voltage) | 207 V at IPPM - Peak voltage seen by protected circuit during 400 W surge; limits stress on downstream ICs |
| IPPM (Peak Pulse Current) | 207 A - Maximum transient current the device safely shunts without failure under 10/1000 µs waveform |
| PPPM (Peak Pulse Power) | 400 W - Surge energy handling capability; supports ISO 7637-2 Pulse 5a (load dump) compliance in 12 V systems |
| TJ max | +150 °C - Enables use in under-hood automotive locations with high ambient temperatures |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress-test requirements including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile 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 | Current entry terminal in forward bias | Connected to ground or low-side reference; enables unidirectional clamping from line-to-ground |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift in automotive environments |
| 400 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 5a load-dump immunity for 12 V vehicle systems without external heat sinking |
| AEC-Q101 qualification | Validated for automotive under-hood applications including temperature cycling, high-temp reverse bias, and mechanical shock |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without moisture-related popcorning or delamination |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision for sensitive microcontrollers |
Applications
| Automotive Engine Control Unit (ECU) Power Rail Protection | ADAS Camera Sensor Interface Protection |
|---|---|
Use Scenario: Suppresses load-dump transients (up to 60 V over 12 V nominal) induced by alternator disconnection in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS connected between battery rail and ground, clamping surges within 1 ns to protect MCU power supply pins. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V LDO regulators and CAN transceivers during ISO 7637-2 Pulse 5a events. |
Use Scenario: Shields FPD-Link III or GMSL serial interface lines in rear-view or surround-view cameras from ESD and cable discharge events. IC Role / Device Role / Timing Role: Line-to-ground TVS placed adjacent to connector, with <1 ns response ensuring signal integrity on 3 Gbps differential links. Use Value: Maintains bit-error-rate (BER) compliance by limiting transient-induced jitter and preventing receiver input stage saturation. |
| Industrial PLC Digital Input Protection | Telecom PoE Midspan Surge Protection |
Use Scenario: Protects 24 V DC digital input channels in programmable logic controllers from inductive kickback caused by solenoid or relay switching. IC Role / Device Role / Timing Role: Unidirectional TVS installed at field-side connector, absorbing repetitive 600 W spikes per IEC 61000-4-5 Combination Wave. Use Value: Extends mean time between failures (MTBF) of optocoupler input stages by reducing cumulative junction stress from repeated transients. |
Use Scenario: Guards 48 V DC power pairs in IEEE 802.3af/at midspan injectors against lightning-induced surges entering via Ethernet cabling. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on each power pair (PSE side), clamping common-mode transients before DC-DC converter input. Use Value: Enables compliance with UL 60950-1 and IEC 61000-4-5 Level 4 (4 kV) without derating or parallel device stacking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A-E3/5A | Same VWM (128 V), lower PPPM (400 W → 400 W), but higher VC (219 V vs. 207 V) and no AEC-Q101 qualification | Commercial industrial use only; not validated for automotive temperature cycling or humidity testing | Select when AEC-Q101 is not required and layout allows slightly higher clamping voltage margin |
| 1.5SMC150AHE3_A/I | Same VWM/VBR/VC specs, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm vs. SMA's 4.50 mm × 2.79 mm), higher RθJA (70 °C/W) | Requires more PCB area; better suited for high-volume manual assembly or where thermal mass improves surge endurance | Choose when board space permits and higher thermal mass is preferred for repetitive surge duty cycles |
Compared with SMAJ150A-E3/5A and 1.5SMC150AHE3_A/I, the P4SMA150AHE3_A/I delivers identical electrical protection performance in a smaller footprint and with automotive-grade reliability validation - making it optimal for space-constrained, safety-critical vehicle subsystems.
Availability
P4SMA150AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, ADAS sensor interface development, and industrial PLC digital input protection requiring stable component supply and long-term lifecycle continuity.
Supply support for P4SMA150AHE3_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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P4SMA Series targets automotive and industrial transient suppression, designed specifically to meet AEC-Q101 requirements while delivering consistent clamping performance in compact surface-mount packages.
FAQ
What is the clamping voltage of P4SMA150AHE3_A/I at its rated peak pulse current?
The P4SMA150AHE3_A/I has a maximum clamping voltage (VC) of 207 V when subjected to its rated peak pulse current (IPPM) of 207 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and ensures downstream components see limited overvoltage during surge events. The P4SMA150AHE3_A/I maintains this clamping performance across its full operating temperature range.
Is P4SMA150AHE3_A/I qualified for automotive applications?
Yes, the P4SMA150AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and revision notes in document 88367. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock per automotive reliability standards. The P4SMA150AHE3_A/I is approved for under-hood and cabin ECU use where ambient temperatures reach +125 °C.
What does the "_A/I" suffix in P4SMA150AHE3_A/I indicate?
The "_A/I" suffix in P4SMA150AHE3_A/I specifies packaging and qualification level: "A" denotes AEC-Q101 qualification for the 6.8 V to 220 V voltage range, and "I" indicates 7500-unit quantity on 13-inch plastic tape and reel. This matches Vishay's ordering information table where P4SMA150AHE3_A/I is listed with base quantity 7500 and delivery mode "13\" diameter plastic tape and reel". The P4SMA150AHE3_A/I is RoHS-compliant and halogen-free.
How does P4SMA150AHE3_A/I compare to bidirectional TVS diodes like P4SMA150CAHE3_A/I?
The P4SMA150AHE3_A/I is unidirectional and features a cathode band for polarity-sensitive line-to-ground protection, whereas P4SMA150CAHE3_A/I is bidirectional with no polarity marking and symmetric clamping in both directions. The P4SMA150AHE3_A/I offers tighter VBR tolerance (143–158 V) and lower ID (1.4 µA) than its bidirectional counterpart (VBR 143–173 V, ID 2.5 µA), making it preferable for DC power rail protection where reverse leakage must be minimized.
What is the thermal resistance of P4SMA150AHE3_A/I, and how does it affect PCB layout?
The P4SMA150AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay document 88367. This value assumes minimal copper area; increasing pad size or adding thermal vias reduces RθJA. For continuous 3.3 W dissipation, the P4SMA150AHE3_A/I requires careful thermal design to avoid exceeding TJ max = 150 °C in high-ambient environments.
P4SMA150AHE3_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):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 1.4A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA150AHE3_A/I FAQ
1.How can I place an order for P4SMA150AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA150AHE3_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 P4SMA150AHE3_A/I reliable?
The price and inventory of P4SMA150AHE3_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 P4SMA150AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA150AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA150AHE3_A/I?
P4SMA150AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA150AHE3_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 P4SMA150AHE3_A/I?
For technical support, including P4SMA150AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150AHE3_A/I requirements.
6.How does Aetrix verify that P4SMA150AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA150AHE3_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 P4SMA150AHE3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA150AHE3_A/I?
All P4SMA150AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150AHE3_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 P4SMA150AHE3_A/I part is unused and in its original packaging.
Return procedure for P4SMA150AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA150AHE3_A/I Tags
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