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Vishay General Semiconductor - Diodes Division P4SMA150CAHE3_A/H
- Part No.:
- P4SMA150CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA150CAHE3_A/H.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA150CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 150 V standoff voltage (VWM), 165 V minimum breakdown voltage (VBR), 207 A peak pulse current (IPPM) at 10/1000 µs, 400 W peak pulse power rating, and AEC-Q101 qualification for automotive applications.
For engineers reviewing the P4SMA150CAHE3_A/H datasheet, P4SMA150CAHE3_A/H pinout, P4SMA150CAHE3_A/H application, or P4SMA150CAHE3_A/H equivalent, this device is selected for robust ESD and surge protection in automotive sensor interfaces, industrial I/O lines, and telecom power rails where bidirectional clamping, low clamping voltage (VC = 207 V), and MSL Level 1 solderability are required.
Technical Context
The P4SMA150CAHE3_A/H operates as a bidirectional avalanche diode, symmetrically clamping positive and negative transients above its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low leakage (<1 µA at VWM), while the low incremental surge resistance enables tight voltage clamping under high-current surges.
Thermally, it exhibits RθJA = 120 °C/W and RθJL = 30 °C/W, supporting operation up to TJ = +150 °C. The device meets J-STD-020 MSL Level 1 and is qualified to AEC-Q101, confirming reliability for automotive under-hood and infotainment systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 165–183 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable clamping initiation with ±5 % tolerance. |
| VC (Clamping Voltage) | 207 V at IPPM = 207 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; critical for IC-level overvoltage margin. |
| PPPM (Peak Pulse Power) | 400 W - Sustains 10/1000 µs transient energy without failure; derates to 300 W above 91 V per spec. |
| ID (Reverse Leakage) | <1 µA at 150 V - Negligible standby current; avoids loading sensitive analog or low-power circuits. |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Common terminal for symmetrical clamping; connects to protected line or ground reference depending on layout. |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in CA devices; no functional distinction-device is fully symmetric. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 400 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 12 V/24 V automotive buses. |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units, ADAS sensors, and body controllers. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or dry-pack requirements. |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage across temperature and lifetime stress conditions. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and chassis ground to clamp both polarities of induced surges. Use Value: Limits clamped voltage to ≤207 V, preserving integrity of 3.3 V/5 V interface ICs and preventing latch-up or gate oxide damage. |
Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring surge events (e.g., relay coil switching, lightning-induced coupling). IC Role / Device Role / Timing Role: Front-end transient suppressor on 24 V DC input channels, mounted directly at connector entry point. Use Value: Absorbs 400 W pulses without degradation, maintaining signal fidelity and eliminating need for secondary protection stages. |
| Telecom Power Rail Protection | Consumer USB Port ESD Hardening |
Use Scenario: Safeguarding 48 V PoE-powered equipment (e.g., IP cameras, access points) against Ethernet cable-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Secondary clamping device downstream of primary GDT or MOV, providing fast-response voltage limiting. Use Value: Fast response time and low VC ensure protected DC-DC converters remain within absolute maximum ratings during surge events. |
Use Scenario: Adding robustness to USB 2.0 data lines and VBUS against human-body-model (HBM) and system-level ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed inline with D+ and D−, referenced to ground. Use Value: Sub-1 µA leakage at 150 V prevents signal distortion; AEC-Q101 grade supports extended product lifecycle in premium consumer devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Same VWM/VBR/VC specs but in larger SMB (DO-214AA) package; 600 W PPPM rating. | Higher power handling suits higher-energy surge environments (e.g., outdoor telecom); requires larger PCB area. | Select when surge energy exceeds 400 W or thermal dissipation demands lower RθJA. |
| 1.5KE150CA | Through-hole TO-218 package; same electrical specs but higher IPPM (230 A) and 1500 W PPPM. | Designed for legacy board assemblies and high-reliability industrial power supplies; not SMT-compatible. | Choose for through-hole production, repair scenarios, or where mechanical robustness outweighs board space constraints. |
Compared with SMBJ150CA and 1.5KE150CA, the P4SMA150CAHE3_A/H delivers identical clamping performance in the smallest footprint (SMA), enabling dense routing in space-constrained automotive modules and portable electronics-without sacrificing AEC-Q101 compliance or MSL Level 1 process compatibility.
Availability
P4SMA150CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power rail protection requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant sourcing.
Supply support for P4SMA150CAHE3_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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The P4SMA Series is engineered for high-volume surface-mount transient suppression in automotive, industrial, and communications systems-delivering consistent clamping performance, AEC-Q101 qualification, and optimized thermal behavior in the SMA package.
FAQ
What is the clamping voltage of the P4SMA150CAHE3_A/H under a 10/1000 µs surge?
The P4SMA150CAHE3_A/H has a maximum clamping voltage (VC) of 207 V at a peak pulse current (IPPM) of 207 A with a 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The P4SMA150CAHE3_A/H maintains this clamping performance across its full operating temperature range.
Is the P4SMA150CAHE3_A/H suitable for automotive applications?
Yes, the P4SMA150CAHE3_A/H is AEC-Q101 qualified and carries the "HE3" suffix denoting RoHS-compliant and automotive-grade construction. It undergoes rigorous stress testing-including temperature cycling, high-temperature reverse bias, and ESD-to meet automotive reliability requirements. The P4SMA150CAHE3_A/H is routinely deployed in engine control units, ADAS camera modules, and body electronics where transient immunity is critical.
Does the P4SMA150CAHE3_A/H have polarity markings?
No, the P4SMA150CAHE3_A/H is a bidirectional TVS diode and carries no polarity marking on the SMA (DO-214AC) package. Unlike unidirectional variants (e.g., P4SMA150A), the CA version functions identically in either orientation, making it ideal for AC-coupled or floating signal paths. The absence of a cathode band reflects its symmetrical internal structure.
What is the maximum steady-state power dissipation of the P4SMA150CAHE3_A/H?
The P4SMA150CAHE3_A/H has a maximum steady-state power dissipation (PD) of 3.3 W at TA = 50 °C on an infinite heatsink. In typical PCB layouts with 0.2" × 0.2" copper pads per terminal, derating applies above 25 °C ambient per Figure 2 in the datasheet. This rating governs continuous leakage-related heating-not transient surge handling-and ensures safe operation under worst-case reverse-bias conditions.
How does the P4SMA150CAHE3_A/H compare to unidirectional P4SMA150A in terms of application flexibility?
The P4SMA150CAHE3_A/H provides bidirectional clamping, allowing protection of AC signals, differential buses (e.g., RS-485), or floating references without concern for orientation. In contrast, the unidirectional P4SMA150A must be installed with correct cathode/anode alignment and only suppresses positive transients relative to ground. For designs requiring polarity-agnostic protection, the P4SMA150CAHE3_A/H eliminates layout errors and simplifies inventory-while maintaining identical VWM, VBR, and VC specs.
P4SMA150CAHE3_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:
- 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)
P4SMA150CAHE3_A/H FAQ
1.How can I place an order for P4SMA150CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA150CAHE3_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 P4SMA150CAHE3_A/H reliable?
The price and inventory of P4SMA150CAHE3_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 P4SMA150CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA150CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA150CAHE3_A/H?
P4SMA150CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA150CAHE3_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 P4SMA150CAHE3_A/H?
For technical support, including P4SMA150CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150CAHE3_A/H requirements.
6.How does Aetrix verify that P4SMA150CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA150CAHE3_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 P4SMA150CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA150CAHE3_A/H?
All P4SMA150CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150CAHE3_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 P4SMA150CAHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA150CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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