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Vishay General Semiconductor - Diodes Division P4SMA150CAHE3_A/I
- Part No.:
- P4SMA150CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA150CAHE3_A/I.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA150CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P4SMA series, designed for clamping voltage transients on signal and power lines. It features a 150 V standoff voltage (VWM), 179 V minimum breakdown voltage (VBR), 207 V maximum clamping voltage (VC) at 1.4 A peak pulse current, and 400 W peak pulse power rating with a 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P4SMA150CAHE3_A/I datasheet, P4SMA150CAHE3_A/I pinout, P4SMA150CAHE3_A/I application, or P4SMA150CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and thermal performance under repetitive surge conditions up to 150 °C junction temperature.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal lines without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while the low incremental surge resistance supports fast transient response and consistent clamping across surge events.
The device is rated for 400 W peak pulse power (10/1000 µs) at 25 °C, derating linearly above TA = 25 °C per Figure 2, with a typical junction-to-ambient thermal resistance of 120 °C/W on standard 0.2" × 0.2" copper pads. It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 128 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 143–158 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 207 V at IPPM = 1.4 A - Peak voltage seen by protected circuit during 10/1000 µs surge; critical for downstream IC survivability. |
| PPPM (Peak Pulse Power) | 400 W - Sustained energy absorption capacity under standardized 10/1000 µs transient; enables robust ESD and lightning surge handling. |
| ID (Reverse Leakage) | <1 µA at 128 V - Minimal standby current draw; preserves signal integrity and battery life in always-on systems. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and high-ambient industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMA (DO-214AC) - Surface-mount plastic package with matte tin-plated leads, UL 94 V-0 rated molding compound, and footprint compatible with automated placement equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (bidirectional) | One end of symmetrical PN junction; no polarity marking required; connects to line under protection. |
| Cathode | Current exit terminal (bidirectional) | Other end of symmetrical PN junction; functionally identical to Anode in bidirectional configuration; forms clamping path in either direction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and ungrounded interfaces without polarity concerns. |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) when properly laid out with adequate PCB copper area. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS sensor modules requiring long-term field reliability. |
| Low profile SMA package | 0.208" × 0.157" footprint with 0.078" height - fits space-constrained layouts while maintaining thermal performance via standard pad design. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates bake requirements and simplifies SMT manufacturing flow. |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Communication Line |
|---|---|
Use Scenario: Protecting wheel speed, pressure, or temperature sensor outputs from load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground to clamp ±200 V surges before reaching analog front-end or CAN transceiver. Use Value: Prevents latch-up or permanent damage to precision ADCs and microcontrollers exposed to ISO 7637-2 Pulse 5a transients. |
Use Scenario: Safeguarding differential data lines in factory automation PLCs against EFT bursts and surge coupling from motor drives. IC Role / Device Role / Timing Role: Paired TVS devices across A/B lines and to ground, suppressing common-mode and differential-mode transients up to 4 kV. Use Value: Maintains data integrity during 10/1000 µs surges without signal distortion, supporting reliable 10 Mbps RS-485 operation. |
| Consumer Appliance Motor Control Board | Telecom DSL Line Interface |
Use Scenario: Shielding microcontroller GPIOs and gate drivers from back-EMF spikes generated by brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Unclamped transient suppressor placed at motor driver output stage to limit voltage overshoot during MOSFET turn-off. Use Value: Extends MOSFET lifetime by limiting VDS stress to ≤207 V, avoiding avalanche-induced degradation in cost-sensitive designs. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers and receivers against lightning-induced surges entering via telephone wiring. IC Role / Device Role / Timing Role: Bidirectional clamping element between tip/ring and ground, coordinated with gas discharge tube (GDT) primary protection. Use Value: Limits let-through voltage to <210 V during 10/700 µs telecom surges, preserving line driver ICs compliant with GR-1089-CORE. |
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 | Same VWM (128 V), higher PPPM (600 W), larger SMB (DO-214AA) package - 2.5× footprint area vs. SMA. | Better suited for higher-energy surges where board space allows; not drop-in due to different pad layout and thermal mass. | Select when surge energy exceeds 400 W and PCB layout permits larger package; verify thermal relief on pads. |
| 1.5KE150CA | Same VWM and bidirectional function, but through-hole DO-15 package; 1.5 kW peak power rating with 10/1000 µs waveform. | Used in legacy or high-reliability power supply inputs where manual assembly or wave soldering is preferred. | Choose only for through-hole designs; incompatible with SMT-only production; requires different reflow profile and test access. |
Compared with P4SMA150CAHE3_A/I, SMBJ150CA offers higher surge capacity but demands more PCB area, while 1.5KE150CA provides superior power handling in through-hole form - neither is pin-compatible, and all three require distinct layout, thermal, and assembly validation.
Availability
P4SMA150CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial communication interface hardening, and consumer appliance motor control requiring stable component supply with AEC-Q101 traceability and RoHS compliance.
Supply support for P4SMA150CAHE3_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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA series was developed to deliver high-power, surface-mount transient suppression for automotive, industrial, and telecom applications where AEC-Q101 qualification, compact size, and repeatable clamping performance are essential - P4SMA150CAHE3_A/I exemplifies this focus with its bidirectional 150 V rating and HE3 automotive suffix.
FAQ
What is the clamping voltage of P4SMA150CAHE3_A/I at its rated peak pulse current?
The P4SMA150CAHE3_A/I has a maximum clamping voltage (VC) of 207 V at its specified peak pulse current (IPPM) of 1.4 A under a 10/1000 µs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88367, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuits during surge events. Designers must ensure downstream components tolerate this clamping level.
Is P4SMA150CAHE3_A/I suitable for automotive applications?
Yes, P4SMA150CAHE3_A/I is AEC-Q101 qualified and carries the "HE3" suffix indicating automotive-grade reliability, including validation for temperature cycling, high-temperature reverse bias, and ESD robustness. It is explicitly intended for use in automotive subsystems such as body control modules, sensor interfaces, and infotainment power rails - confirmed in Vishay's ordering information and qualification notes.
What does the "CA" suffix mean in P4SMA150CAHE3_A/I?
The "CA" suffix in P4SMA150CAHE3_A/I denotes a bidirectional configuration - meaning the device functions identically in both polarities and has no cathode marking. This distinguishes it from unidirectional variants (e.g., P4SMA150A), which feature a band-marked cathode and conduct only in reverse bias. Bidirectional operation makes P4SMA150CAHE3_A/I ideal for protecting AC signals and differential buses.
What is the thermal resistance of P4SMA150CAHE3_A/I, and how does it affect layout?
P4SMA150CAHE3_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. This value assumes standard JEDEC layout; reducing pad size or omitting thermal vias increases junction temperature during repetitive surges. Layout must follow Vishay's recommended pad dimensions to maintain safe TJ ≤ 150 °C under worst-case duty cycles.
How does the "HE3_A/I" ordering code break down for P4SMA150CAHE3_A/I?
In P4SMA150CAHE3_A/I, "HE3" indicates RoHS-compliant + AEC-Q101 qualified construction; "A" denotes revision level per Vishay's internal coding; and "I" specifies packaging in 13" diameter tape-and-reel (7500 units/reel). This full ordering code ensures traceability to automotive-grade material, process, and packaging - distinct from commercial-grade E3 or M3 variants.
P4SMA150CAHE3_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:
- -
- 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/I FAQ
1.How can I place an order for P4SMA150CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA150CAHE3_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 P4SMA150CAHE3_A/I reliable?
The price and inventory of P4SMA150CAHE3_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 P4SMA150CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA150CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA150CAHE3_A/I?
P4SMA150CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA150CAHE3_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 P4SMA150CAHE3_A/I?
For technical support, including P4SMA150CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150CAHE3_A/I requirements.
6.How does Aetrix verify that P4SMA150CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA150CAHE3_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 P4SMA150CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA150CAHE3_A/I?
All P4SMA150CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150CAHE3_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 P4SMA150CAHE3_A/I part is unused and in its original packaging.
Return procedure for P4SMA150CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA150CAHE3_A/I Tags
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