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Vishay General Semiconductor - Diodes Division P4SMA180CAHE3_A/I
- Part No.:
- P4SMA180CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA180CAHE3_A/I.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA180CAHE3_A/I 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 154 V standoff voltage (VWM), 171–189 V breakdown voltage (VBR) at 1 mA, 246 V maximum clamping voltage (VC) at 1.2 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and industrial I/O lines against ESD and inductive switching surges.
For engineers reviewing the P4SMA180CAHE3_A/I datasheet, P4SMA180CAHE3_A/I pinout, P4SMA180CAHE3_A/I application, or P4SMA180CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification for automotive use, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while the low incremental surge resistance supports rapid energy dissipation during transient events.
The device is rated for 400 W peak pulse power (derated to 300 W above 91 V), with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), allowing reliable operation up to 150 °C junction temperature. It meets UL 497B recognition and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 154 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 171–189 V at 1 mA - Confirmed voltage range where device transitions into avalanche conduction; tight tolerance enables predictable protection threshold. |
| VC (Clamping Voltage) | 246 V at IPPM = 1.2 A - Peak voltage seen across protected circuit during worst-case 10/1000 µs transient; critical for downstream component survivability. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Energy-handling capacity under standardized surge waveform; sufficient for IEC 61000-4-5 Level 3 surges. |
| TJ max | 150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive and industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
| Package | SMA (DO-214AC) - Surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height; compatible with standard SMT reflow profiles. |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case with matte tin-plated leads, UL 94 V-0 flammability rating, and no polarity marking (bidirectional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either direction) | One terminal of symmetrical PN junction; accepts surge current regardless of polarity - enables AC line or differential pair protection. |
| Cathode | Transient current exit (either direction) | Second terminal of symmetrical structure; completes low-impedance path to ground or return rail during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, RS-485 buses, or transformer-coupled interfaces without external polarity management. |
| 400 W peak pulse power | Handles high-energy transients such as ISO 7637-2 pulse 1/2b/5a in automotive electronics without degradation. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring extended lifetime and stress resilience. |
| MSL Level 1 rating | Permits unlimited floor life and standard reflow without baking; simplifies manufacturing logistics for high-volume SMT lines. |
| Glass-passivated junction | Ensures stable VBR over time and temperature, low leakage (<1 µA), and immunity to humidity-induced parameter drift. |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Data Line Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits induced transients to ≤246 V, preserving 12-bit ADC accuracy and preventing latch-up in downstream signal conditioning ICs. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation PLCs subjected to cable discharge events and ground loop surges. IC Role / Device Role / Timing Role: Line-side transient suppressor connected across A/B differential pair, referenced to local ground. Use Value: Clamps common-mode surges within 1 ns response time, maintaining signal integrity up to 10 Mbps and preventing transceiver damage per IEC 61000-4-4 Level 4. |
| Telecom DSL Line Surge Protection | Consumer Appliance Motor Drive I/O Protection |
Use Scenario: Shielding ADSL/VDSL line drivers and receivers from lightning-induced surges entering via outdoor copper pairs. IC Role / Device Role / Timing Role: Primary protection device mounted at line interface connector, upstream of gas discharge tube secondary stage. Use Value: Absorbs initial 400 W surge energy while holding clamping voltage below 246 V, reducing stress on downstream GDT and IC-level ESD structures. |
Use Scenario: Securing microcontroller GPIOs driving relays or triacs in smart washing machines and HVAC controls during inductive kickback. IC Role / Device Role / Timing Role: Low-capacitance (≈50 pF) TVS placed directly at MCU pin, shunting flyback energy to ground. Use Value: Prevents >15 kV ESD events and 600 V inductive spikes from corrupting firmware execution or damaging GPIO ESD diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; 250 V VC at 2.5 A IPPM | Better suited for higher-energy surges but requires larger PCB area and has higher thermal mass | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 or when board space allows larger footprint |
| 1.5KE180CA | Through-hole TO-218 package; 1500 W PPPM; 260 V VC at 5.8 A IPPM; higher capacitance (~100 pF) | Designed for legacy through-hole assembly and mains-connected equipment with higher surge immunity requirements | Choose only for retrofit designs or high-power AC line protection where SMT is not feasible |
Compared with SMBJ180CA and 1.5KE180CA, the P4SMA180CAHE3_A/I offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and precise 246 V clamping - making it preferred for space-constrained automotive and industrial SMT designs requiring validated reliability and fast response.
Availability
P4SMA180CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, telecom DSL line protection, and consumer appliance motor drive I/O requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA180CAHE3_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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The P4SMA Series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the P4SMA180CAHE3_A/I under a 10/1000 µs surge?
The P4SMA180CAHE3_A/I has a maximum clamping voltage (VC) of 246 V when subjected to a 1.2 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88367) and defines the upper voltage limit imposed on protected circuitry during transient events. The P4SMA180CAHE3_A/I maintains this clamping performance across its specified operating temperature range and after repeated surge exposures.
Is the P4SMA180CAHE3_A/I suitable for automotive applications?
Yes, the P4SMA180CAHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101 qualified construction. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per the AEC standard, making it appropriate for engine control, body electronics, and ADAS subsystems. The P4SMA180CAHE3_A/I also meets UL 497B recognition for protector classification.
What is the standoff voltage (VWM) of the P4SMA180CAHE3_A/I?
The standoff voltage (VWM) of the P4SMA180CAHE3_A/I is 154 V - the maximum DC or continuous peak reverse voltage the device can withstand without entering avalanche conduction. This parameter ensures reliable operation under normal line conditions while providing adequate margin below the 171–189 V breakdown range. The P4SMA180CAHE3_A/I maintains <1 µA reverse leakage at this voltage, minimizing standby power loss in sensitive circuits.
Does the P4SMA180CAHE3_A/I have polarity markings on the package?
No, the P4SMA180CAHE3_A/I does not have polarity markings because it is a bidirectional TVS diode. Unlike unidirectional types that feature a cathode band, the P4SMA180CAHE3_A/I uses a symmetrical junction structure and functions identically in both directions - eliminating the need for orientation during placement. This characteristic simplifies layout and assembly for differential or AC-coupled signal paths.
What package type does the P4SMA180CAHE3_A/I use, and is it compatible with standard SMT processes?
The P4SMA180CAHE3_A/I uses the SMA (DO-214AC) surface-mount package, measuring 5.28 mm × 4.50 mm × 2.29 mm, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. It is rated MSL Level 1 (per J-STD-020), meaning it can be stored indefinitely at ambient conditions and processed using standard lead-free reflow profiles without baking. The P4SMA180CAHE3_A/I is fully compatible with high-speed pick-and-place and automated optical inspection systems.
P4SMA180CAHE3_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):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 1.2A
- Power - Peak Pulse:
- 400W
- 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)
P4SMA180CAHE3_A/I FAQ
1.How can I place an order for P4SMA180CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA180CAHE3_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 P4SMA180CAHE3_A/I reliable?
The price and inventory of P4SMA180CAHE3_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 P4SMA180CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA180CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA180CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA180CAHE3_A/I?
P4SMA180CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA180CAHE3_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 P4SMA180CAHE3_A/I?
For technical support, including P4SMA180CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA180CAHE3_A/I requirements.
6.How does Aetrix verify that P4SMA180CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA180CAHE3_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 P4SMA180CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA180CAHE3_A/I?
All P4SMA180CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA180CAHE3_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 P4SMA180CAHE3_A/I part is unused and in its original packaging.
Return procedure for P4SMA180CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA180CAHE3_A/I Tags
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