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Vishay General Semiconductor - Diodes Division P4SMA150CAHM3_A/H
- Part No.:
- P4SMA150CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA150CAHM3_A/H.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA150CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features 150 V standoff voltage (VWM), 179 V breakdown voltage (VBR) at 1 mA, 207 V maximum clamping voltage (VC) at 1.4 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial systems.
For engineers reviewing the P4SMA150CAHM3_A/H datasheet, P4SMA150CAHM3_A/H pinout, P4SMA150CAHM3_A/H application, or P4SMA150CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low incremental surge resistance, and compatibility with automated SMT assembly on standard PCB copper pads.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both directions, enabling robust transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the SMA package supports high thermal dissipation via 5.0 mm × 5.0 mm copper pads per terminal.
The P4SMA150CAHM3_A/H is rated for repetitive 400 W peak pulse power (10/1000 µs) up to TJ = 25 °C, derating linearly above that temperature per Figure 2. It meets MSL Level 1 per J-STD-020 and is halogen-free, RoHS-compliant, and AEC-Q101 qualified - confirming suitability for automotive-grade reliability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 179 V min / 198 V max at IT = 1 mA - precise avalanche onset threshold ensuring predictable clamping behavior. |
| VC (Clamping Voltage) | 207 V at IPPM = 1.4 A - limits transient voltage seen by downstream circuitry during ESD or load-switching events. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - energy-handling capacity for standardized surge waveforms; derated above 25 °C ambient. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - negligible standby current, critical for low-power sensor interfaces and battery-backed systems. |
| TJ max | 150 °C - maximum junction temperature enabling operation in under-hood automotive or industrial environments. |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm thermal pad layout for reliable heat transfer. |
Pinout & Package
Package: SMA (DO-214AC), molded case with matte tin-plated leads, UL 94 V-0 rated compound, no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | One of two symmetrical terminals; connects to protected line or ground reference depending on circuit topology. |
| Cathode | Transient return path (bidirectional) | Identical to Anode in bidirectional devices; no functional distinction - both terminals behave identically during positive/negative transients. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring long-term reliability under thermal cycling and vibration. |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity testing when properly mounted on recommended 5.0 mm × 5.0 mm copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.16) | Minimizes overvoltage stress on protected ICs - critical for safeguarding 3.3 V or 5 V logic interfaces near sensitive analog front-ends. |
| MSL Level 1 moisture sensitivity | Enables standard reflow soldering without baking; compatible with high-volume automated SMT lines using JEDEC-compliant profiles. |
| Halogen-free & RoHS-compliant | Fulfills environmental compliance requirements for global automotive OEMs and industrial equipment manufacturers. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to limit transient excursions within IC absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to 12 V or 24 V automotive sensors operating in harsh electrical environments with ±100 V transients. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise in factory automation. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input lines to absorb repetitive surges without degrading signal integrity or causing false triggering. Use Value: Extends mean time between failures (MTBF) of PLC field I/O cards by suppressing >1 kV transients induced by nearby contactor switching. |
| Telecom Line Interface Protection | Consumer Power Adapter ESD Guard |
Use Scenario: Shielding Ethernet PHY interface circuits and PoE injectors from lightning-induced surges on unshielded twisted-pair cabling. IC Role / Device Role / Timing Role: Primary-level transient suppressor placed before common-mode chokes and isolation transformers to reduce energy entering secondary-side circuitry. Use Value: Enables compliance with IEC 61000-4-5 (10/700 µs) surge immunity standards while maintaining signal bandwidth up to 100 MHz. |
Use Scenario: Clamping ESD events (>8 kV contact discharge) on USB-C and barrel jack inputs of AC/DC adapters used in home electronics. IC Role / Device Role / Timing Role: First-line defense against human-body-model (HBM) and charged-device-model (CDM) discharges entering through external ports. Use Value: Eliminates need for additional series impedance or RC filtering, preserving fast charging handshake timing and reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package with higher RθJA (100 °C/W vs. 120 °C/W). | Better suited for higher-energy surges but requires larger PCB footprint and more thermal relief. | Select when system-level surge tests exceed 400 W or when board space allows larger package for improved thermal margin. |
| 1.5KE150CA | Through-hole TO-218 package; 1500 W PPPM; higher capacitance (~150 pF vs. ~30 pF); slower response due to lead inductance. | Used in legacy power supply designs where manual assembly or high-surge legacy standards apply. | Choose only for retrofit or cost-sensitive non-automotive applications where SMT is not feasible and surge energy exceeds 400 W. |
Compared with SMBJ150CA and 1.5KE150CA, the P4SMA150CAHM3_A/H delivers optimal balance of automotive-grade reliability, compact SMT form factor, and sufficient 400 W surge handling for modern sensor and communication interfaces - making it preferred for new designs targeting AEC-Q101 compliance and space-constrained layouts.
Availability
P4SMA150CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface shielding requiring stable component supply across production lifecycles.
Supply support for P4SMA150CAHM3_A/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 performance.
The P4SMA Series was developed to deliver high-reliability, surface-mount TVS solutions for automotive, industrial, and telecom applications demanding AEC-Q101 qualification, low-profile packaging, and consistent clamping performance across temperature.
FAQ
What is the clamping voltage of P4SMA150CAHM3_A/H at its rated peak pulse current?
The P4SMA150CAHM3_A/H has a maximum clamping voltage (VC) of 207 V at 1.4 A peak pulse current (IPPM), measured under the standardized 10/1000 µs waveform. This value ensures downstream components see limited overvoltage during transient events, directly supporting design margins for 150 V-rated systems. The P4SMA150CAHM3_A/H maintains this clamping performance across its full operating temperature range.
Is P4SMA150CAHM3_A/H suitable for automotive applications?
Yes, the P4SMA150CAHM3_A/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction with automotive-grade reliability validation. It is explicitly intended for use in automotive subsystems such as body control modules, ADAS sensor interfaces, and infotainment power rails where transient immunity and long-term stability are required. The P4SMA150CAHM3_A/H meets MSL Level 1 and supports reflow soldering without preconditioning.
How does the bidirectional configuration of P4SMA150CAHM3_A/H affect its circuit implementation?
The P4SMA150CAHM3_A/H has no polarity marking and functions identically in both directions, allowing placement across any two nodes requiring symmetrical transient suppression - such as differential signal pairs, AC-coupled lines, or dual-rail supplies. Unlike unidirectional TVS diodes, it eliminates orientation errors during assembly and simplifies layout for balanced protection schemes. The P4SMA150CAHM3_A/H achieves this via matched avalanche characteristics in forward and reverse bias.
What thermal considerations apply when using P4SMA150CAHM3_A/H in high-temperature environments?
The P4SMA150CAHM3_A/H has a maximum junction temperature of 150 °C and thermal resistance RθJA of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads. Derating curves in Figure 2 require reducing peak pulse power linearly above 25 °C ambient; at 85 °C ambient, PPPM drops to ~280 W. Proper copper pour and thermal vias are essential to maintain safe operation. The P4SMA150CAHM3_A/H must be placed away from other heat sources to avoid cumulative thermal stress.
Does P4SMA150CAHM3_A/H meet international surge immunity standards?
The P4SMA150CAHM3_A/H supports compliance with IEC 61000-4-5 (surge immunity) and IEC 61000-4-2 (ESD) when implemented with appropriate PCB layout - specifically 5.0 mm × 5.0 mm copper pads per terminal and minimal trace inductance. Its 400 W PPPM rating aligns with Level 3–4 surge testing requirements for industrial and automotive equipment. The P4SMA150CAHM3_A/H itself is not certified to a standard, but enables system-level certification when applied per Vishay's recommended practices.
P4SMA150CAHM3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
P4SMA150CAHM3_A/H FAQ
1.How can I place an order for P4SMA150CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA150CAHM3_A/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 P4SMA150CAHM3_A/H reliable?
The price and inventory of P4SMA150CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA150CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA150CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA150CAHM3_A/H?
P4SMA150CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA150CAHM3_A/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 P4SMA150CAHM3_A/H?
For technical support, including P4SMA150CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150CAHM3_A/H requirements.
6.How does Aetrix verify that P4SMA150CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA150CAHM3_A/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 P4SMA150CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA150CAHM3_A/H?
All P4SMA150CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150CAHM3_A/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 P4SMA150CAHM3_A/H part is unused and in its original packaging.
Return procedure for P4SMA150CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA150CAHM3_A/H Tags
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