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Vishay General Semiconductor - Diodes Division P4SMA180A-E3/61
- Part No.:
- P4SMA180A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA180A-E3/61.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,520
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Product details
Overview
P4SMA180A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on power and signal lines. It features a 180 V standoff voltage (VWM), 199.5 V minimum breakdown voltage (VBR), 246 V maximum clamping voltage (VC) at 1.2 A peak pulse current, and 400 W peak pulse power rating with a 10/1000 µs waveform - suitable for protecting MOSFETs and sensor interfaces in industrial power supplies.
For engineers reviewing the P4SMA180A-E3/61 datasheet, P4SMA180A-E3/61 pinout, P4SMA180A-E3/61 application, or P4SMA180A-E3/61 equivalent, key selection criteria include clamping performance under 10/1000 µs surge, thermal resistance (RθJA = 120 °C/W), unidirectional polarity marking, SMA (DO-214AC) package compatibility, and AEC-Q101 qualification status for automotive-grade variants.
Technical Context
The P4SMA180A-E3/61 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (171–189 V at 1 mA test current). Its glass-passivated junction ensures stable leakage (<1.0 µA at 154 V) and fast response time (<1.0 ns), enabling effective suppression of ESD and inductive switching spikes.
Thermally, it uses an SMA (DO-214AC) package with matte tin-plated leads, rated for TJ = –65 to +150 °C operation and MSL Level 1 reflow compatibility (peak 260 °C). Derating applies above 25 °C ambient: power dissipation drops from 3.3 W at 50 °C to zero at 150 °C per Fig. 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 154 V - Maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping onset. |
| VBR (Breakdown Voltage) | 171–189 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 246 V at IPPM = 1.2 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for IC survival. |
| PPPM (Peak Pulse Power) | 400 W - Sustained transient energy handling capability on 0.2" × 0.2" copper pads; derates to 300 W above 91 V per spec note. |
| ID (Reverse Leakage) | <1.0 µA at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance; determines required PCB copper area for thermal management at 3.3 W PD. |
| Polarity | Unidirectional - Cathode marked by band; blocks forward current until VF ≈ 3.5 V at 25 A (per note 5). |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with UL 94 V-0 flammability rating. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; defines directionality and grounding topology. |
| Cathode | Avalanche conduction path / Clamping node | Marked by band; ties to higher-potential rail or signal line to be clamped; carries full surge current during protection event. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) without derating on standard PCB pads. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure per JESD22-A101. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing at 260 °C peak, eliminating bake requirements for SMT assembly. |
| AEC-Q101 qualified option (HE3 suffix) | Validated for automotive powertrain and body electronics per stress test requirements including HTGB, TCT, and H3TRB. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving system-level immunity margin. |
Applications
| Industrial Motor Drive Protection | Automotive Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Suppressing inductive kickback from 24 V DC solenoid drivers in PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed across coil terminals to clamp flyback voltage to ≤246 V, preventing gate oxide damage to driving MOSFETs. Use Value: Enables use of cost-optimized 300 V-rated MOSFETs instead of 600 V parts, reducing conduction losses and BOM cost. |
Use Scenario: Protecting LIN bus transceivers and temperature sensors in engine control units exposed to load dump and jump-start events. IC Role / Device Role / Timing Role: Standoff-rated clamping device on sensor supply line (VCC_SENS), triggered only during >154 V transients while remaining invisible during normal 12 V operation. Use Value: Maintains signal fidelity during EMC testing (ISO 11452-4) with <1 µA leakage, avoiding false fault detection in low-power sleep modes. |
| Telecom Power Supply Input Stage | Consumer Appliance Mainboard Surge Protection |
|
Use Scenario: Secondary-side overvoltage protection on 48 V telecom rectifier outputs feeding PoE injectors. IC Role / Device Role / Timing Role: Fast-response clamping element between +48 V and GND, activated within <1 ns to limit transient propagation to downstream DC-DC controllers. Use Value: Achieves compliance with GR-1089-CORE Section 4.5.2.1 (surge immunity) using single-device solution without series impedance. |
Use Scenario: Safeguarding microcontroller reset lines and USB data lines in smart washing machines subject to ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Low-capacitance (CJ ≈ 30 pF at 0 V, per Fig. 4) unidirectional suppressor shunting ESD current away from sensitive GPIO pins. Use Value: Prevents latch-up in 3.3 V logic without distorting 480 Mbps USB 2.0 eye diagram due to controlled clamping and minimal parasitic capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A | Same VWM (154 V), but SMB package (DO-214AA); RθJA = 90 °C/W; 600 W PPPM rating. | Higher power handling and better thermal performance, but 25 % larger footprint than SMA. | Select SMBJ180A when board space allows and >400 W surge margin is required; not drop-in due to different pad layout. |
| 1.5SMC180A | Same electrical specs, but SMC (DO-214AB) package; RθJA = 65 °C/W; 1500 W PPPM rating. | Designed for high-energy industrial surges; requires larger copper pour and heavier trace routing. | Choose 1.5SMC180A for DIN rail-mounted equipment with IEC 61000-4-5 Level 4 immunity; incompatible pinout and thermal pad design. |
Compared with P4SMA180A-E3/61, SMBJ180A offers superior thermal dissipation and surge margin in a slightly larger package, while 1.5SMC180A targets heavy-duty applications requiring triple the peak power - both require PCB redesign and are not pin-compatible replacements.
Availability
P4SMA180A-E3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power supplies, and consumer appliance mainboards requiring stable component supply and RoHS-compliant commercial-grade TVS protection.
Supply support for P4SMA180A-E3/61 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The P4SMA Series delivers standardized, high-volume TVS diodes optimized for automated SMT assembly and broad industrial/automotive surge immunity compliance - balancing clamping precision, thermal robustness, and manufacturing scalability.
FAQ
What is the maximum clamping voltage of the P4SMA180A-E3/61 under a 10/1000 µs surge?
The P4SMA180A-E3/61 has a maximum clamping voltage (VC) of 246 V when subjected to a 1.2 A peak pulse current with a 10/1000 µs waveform, as specified in the Electrical Characteristics table on page 2 of Vishay document 88367. This value is measured at TJ = 25 °C on standard 0.2" × 0.2" copper pads and defines the upper voltage limit imposed on protected circuitry during transient events. The P4SMA180A-E3/61 maintains this clamping performance across its operational temperature range with minimal drift.
Is the P4SMA180A-E3/61 suitable for automotive applications?
The base P4SMA180A-E3/61 is RoHS-compliant and commercial-grade; however, Vishay offers AEC-Q101 qualified versions under ordering codes such as P4SMA180AHE3_A. These variants undergo extended stress testing including high-temperature gate bias, temperature cycling, and unbiased highly accelerated stress testing. The P4SMA180A-E3/61 itself is not AEC-Q101 qualified, so for automotive use, engineers must specify the HE3 or HM3 suffix variant - the P4SMA180A-E3/61 remains appropriate for non-safety-critical industrial or telecom systems.
What is the reverse leakage current of the P4SMA180A-E3/61 at its standoff voltage?
The P4SMA180A-E3/61 exhibits a maximum reverse leakage current (ID) of 1.0 µA when biased at its standoff voltage (VWM) of 154 V, tested at TA = 25 °C. This ultra-low leakage ensures minimal power loss and no measurable loading effect on high-impedance sensor bias networks or battery-backed circuits. The P4SMA180A-E3/61 maintains this specification across its full operating temperature range, with leakage increasing predictably per Arrhenius behavior but remaining below 5 µA up to +125 °C.
Does the P4SMA180A-E3/61 have polarity marking, and how is it identified?
Yes, the P4SMA180A-E3/61 is a unidirectional TVS diode with explicit polarity marking: a visible cathode band is molded onto the SMA (DO-214AC) package body near one end. Per Vishay mechanical drawings, this band corresponds to the cathode terminal, which must be connected toward the higher-potential side of the protected line. The P4SMA180A-E3/61 has no marking on the anode end, and incorrect orientation will prevent proper clamping function - always verify band placement during layout and assembly.
What is the thermal resistance of the P4SMA180A-E3/61, and how does it affect PCB layout?
The P4SMA180A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly dictates PCB copper area requirements: doubling pad size reduces RθJA by ~25 %, while adding internal thermal vias can improve heat spreading. For continuous 3.3 W power dissipation, the P4SMA180A-E3/61 requires careful thermal design to avoid exceeding TJ(max) = 150 °C - especially in enclosed enclosures or high-ambient environments.
P4SMA180A-E3/61 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):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 1.2A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA180A-E3/61 FAQ
1.How can I place an order for P4SMA180A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA180A-E3/61 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 P4SMA180A-E3/61 reliable?
The price and inventory of P4SMA180A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA180A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA180A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA180A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA180A-E3/61?
P4SMA180A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA180A-E3/61 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 P4SMA180A-E3/61?
For technical support, including P4SMA180A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA180A-E3/61 requirements.
6.How does Aetrix verify that P4SMA180A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA180A-E3/61 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 P4SMA180A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA180A-E3/61?
All P4SMA180A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA180A-E3/61, 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 P4SMA180A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA180A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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