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Vishay General Semiconductor - Diodes Division P4SMA180A-M3/61
- Part No.:
- P4SMA180A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA180A-M3/61.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
P4SMA180A-M3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 180 V standoff voltage (VWM), 199.5 V minimum breakdown voltage (VBR), and 246 V maximum clamping voltage (VC) at 1.2 A peak pulse current (IPPM), designed to protect power rails and signal lines in industrial power supplies and automotive ECUs against lightning-induced surges and inductive switching transients.
For engineers reviewing the P4SMA180A-M3/61 datasheet, P4SMA180A-M3/61 pinout, P4SMA180A-M3/61 application, or P4SMA180A-M3/61 equivalent, this device delivers verified 400 W peak pulse power (10/1000 µs), halogen-free RoHS-compliant construction, AEC-Q101 qualification readiness (via HM3 suffix variants), and MSL Level 1 moisture sensitivity - critical for high-reliability board-level ESD and surge protection design.
Technical Context
The P4SMA180A-M3/61 operates as a unidirectional avalanche diode with cathode-band polarity marking, leveraging glass-passivated junction technology for stable reverse breakdown and low incremental surge resistance. Its clamping behavior is defined under standardized 10/1000 µs double-exponential waveform testing per IEC 61000-4-5.
Thermal performance is characterized by 120 °C/W junction-to-ambient thermal resistance (RθJA) on standard 0.2" × 0.2" copper pads and 30 °C/W junction-to-lead (RθJL), enabling predictable derating above 25 °C ambient per Figure 2. It supports repetitive surge duty cycles up to 0.01 % at 400 W (300 W above 91 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 154 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 171–189 V at 1 mA - Verified avalanche onset range; ensures consistent turn-on across production lots and temperature. |
| VC (Clamping Voltage) | 246 V at IPPM = 1.2 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 400 W - Sustained transient energy absorption capability under standardized waveform; confirms compliance with IEC 61000-4-5 Level 4. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max | 150 °C - Maximum junction temperature rating; enables operation in under-hood automotive and industrial environments. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.0 mm × 5.0 mm thermal pad footprint; compatible with automated reflow assembly. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection in unidirectional configuration | Reverse-biased terminal that conducts during overvoltage events; must connect to protected line (e.g., +12 V rail). |
| Anode | Reference/ground return path | Connects to system ground or low-impedance return plane; forms clamping loop with cathode to limit transient voltage swing. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Validated surge immunity for IEC 61000-4-5 Level 4 (4 kV line-to-ground), reducing need for external series impedance. |
| Glass-passivated chip junction | Stable VBR tolerance (±5 %) and low leakage (<1 µA) over 1000-hour HTOL testing at 125 °C. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and EU Directive 2015/863 for brominated flame retardants. |
| AEC-Q101 qualification pathway | HM3 variant available; qualified per stress tests including HTRB, HTGB, TCT, and ESD-HBM ≥ 8 kV - suitable for automotive body electronics. |
| Low incremental surge resistance | Enables tighter VC/VBR ratio (1.37×) versus competing TVS diodes, minimizing voltage overshoot during fast-rising transients. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24 V DC input stage of programmable logic controllers (PLCs) against load dump and ISO 7637-2 Pulse 5a transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp surges before they reach DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤246 V, preventing damage to 36 V-rated input capacitors and enabling use of lower-voltage, cost-optimized downstream components. |
Use Scenario: Safeguarding LIN bus transceivers and window motor drivers in BCM against battery reverse connection and jump-start spikes. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply rail, activated within <1 ns to suppress >100 V transients before IC internal protection triggers. Use Value: Maintains functional safety integrity per ISO 26262 ASIL-B by ensuring no single-point failure in power domain due to overvoltage. |
| Telecom Base Station Power Interface | Consumer Appliance Motor Drive Board |
Use Scenario: Shielding PoE-powered Ethernet switch ports from induced lightning surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device on 48 V DC input, coordinated with GDT and MOV for staged surge diversion. Use Value: Delivers 400 W pulse handling without thermal runaway, supporting EN 61000-4-5 compliance with minimal PCB area. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machine control boards during direction reversal. IC Role / Device Role / Timing Role: Fast-response TVS across motor terminals and MCU I/O lines to prevent latch-up and reset corruption. Use Value: Clamps 150 V spikes to 246 V in <1 ns, eliminating firmware crashes and extending MCU lifetime in high-dust, high-humidity environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A | Same VWM (154 V) and VC (246 V), but SMB package (DO-214AA); 50 % larger footprint, 10 % higher RθJA (130 °C/W). | Better suited for manual prototyping or legacy layouts where SMB pad spacing is already established. | Select when board space allows larger package and thermal margin is less constrained than in dense automotive modules. |
| 1.5SMC180A | Same electrical specs but SMC (DO-214AB) package; 30 % higher PPPM (1500 W), 2× higher IPPM (6.7 A), 2.5× larger thermal mass. | Used in primary AC/DC front-end protection where higher energy absorption is required beyond secondary-side regulation. | Choose only if surge threat level exceeds IEC 61000-4-5 Level 4 or if system-level testing demands >400 W pulse handling. |
Compared with SMBJ180A and 1.5SMC180A, the P4SMA180A-M3/61 offers optimal balance of compact SMA footprint, AEC-Q101-ready construction, and precise 400 W surge rating - making it ideal for space-constrained, high-volume automotive and industrial PCBs where layout efficiency and supply chain consistency are prioritized.
Availability
P4SMA180A-M3/61 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, telecom infrastructure interfaces, and consumer appliance motor control requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification traceability.
Supply support for P4SMA180A-M3/61 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 high-reliability diodes, MOSFETs, and optoelectronics with vertical manufacturing control and automotive-grade process validation.
The P4SMA Series targets board-level transient protection in cost-sensitive, high-volume applications - engineered for robustness in harsh environments while maintaining tight parametric tolerances and full regulatory compliance (RoHS, AEC-Q101, UL).
FAQ
What is the maximum clamping voltage of the P4SMA180A-M3/61 under a 10/1000 µs surge?
The P4SMA180A-M3/61 has a maximum clamping voltage (VC) of 246 V when subjected to its rated peak pulse current of 1.2 A under the standardized 10/1000 µs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay document 88367 and defines the upper voltage limit imposed on protected circuitry during transient events.
Is the P4SMA180A-M3/61 suitable for automotive applications?
The P4SMA180A-M3/61 is halogen-free and RoHS-compliant, and its base P4SMA180A family is AEC-Q101 qualified in HM3 variants (e.g., P4SMA180AHM3_A). While the M3 suffix itself denotes commercial-grade halogen-free construction, the identical die and process enable direct qualification path - making P4SMA180A-M3/61 appropriate for non-safety-critical automotive systems like lighting modules and HVAC controls when validated per customer requirements.
How does the P4SMA180A-M3/61 differ from bidirectional versions like P4SMA180CA?
The P4SMA180A-M3/61 is unidirectional and features a cathode band for polarity identification, conducting only in reverse bias to clamp positive transients on grounded-line configurations. In contrast, P4SMA180CA is bidirectional with symmetrical clamping in both directions and no polarity marking - used for AC line protection or differential signal lines where voltage polarity reverses. Their VWM, VBR, and VC values differ accordingly.
What is the thermal resistance of the P4SMA180A-M3/61, and how does it affect layout?
The P4SMA180A-M3/61 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 requires PCB designers to allocate sufficient copper area and avoid narrow traces near the device to maintain junction temperature below 150 °C during repetitive surge events - especially critical in enclosed industrial enclosures with limited airflow.
Can the P4SMA180A-M3/61 be used in parallel for higher surge current handling?
No - the P4SMA180A-M3/61 should not be paralleled without external balancing resistors, as minor VBR mismatches between units cause uneven current sharing and potential thermal runaway. Vishay specifies single-device operation only; for higher IPPM, select a higher-power package like 1.5SMC180A or implement staged protection with upstream GDTs instead of parallel TVS diodes.
P4SMA180A-M3/61 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-M3/61 FAQ
1.How can I place an order for P4SMA180A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA180A-M3/61 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-M3/61 reliable?
The price and inventory of P4SMA180A-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA180A-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA180A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA180A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA180A-M3/61?
P4SMA180A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA180A-M3/61 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-M3/61?
For technical support, including P4SMA180A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA180A-M3/61 requirements.
6.How does Aetrix verify that P4SMA180A-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA180A-M3/61 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-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA180A-M3/61?
All P4SMA180A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA180A-M3/61, 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-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA180A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA180A-M3/61 Tags
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