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Vishay General Semiconductor - Diodes Division P4SMA440A-M3/61
- Part No.:
- P4SMA440A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA440A-M3/61.pdf
- Description:
- TVS DIODE 376VWM 602VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,365
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Product details
Overview
P4SMA440A-M3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-voltage transient protection in power rails and signal lines. It features a 440 V standoff voltage (VWM), 418–462 V breakdown voltage (VBR) at 1 mA, 602 V maximum clamping voltage (VC) at 0.5 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting industrial power supplies and telecom rectifier stages against lightning-induced surges.
For engineers reviewing the P4SMA440A-M3/61 datasheet, P4SMA440A-M3/61 pinout, P4SMA440A-M3/61 application, or P4SMA440A-M3/61 equivalent, key selection considerations include its DO-214AC (SMA) package, unidirectional polarity with cathode band marking, 150 °C max junction temperature, and halogen-free RoHS-compliant construction per M3 suffix.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below its 440 V stand-off voltage and rapidly transitions to low-impedance conduction when transient voltage exceeds its 418–462 V breakdown range. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns), critical for suppressing fast-rising ESD and switching transients.
The device delivers 400 W peak pulse power under standard 10/1000 µs waveform conditions on 5.0 mm × 5.0 mm copper pads, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). It is rated for repetitive surge duty cycle ≤0.01% and meets AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 440 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail margin. |
| VBR (Breakdown Voltage) | 418–462 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 602 V at IPPM = 0.5 A - Peak voltage seen by protected circuit during full-rated surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Surge energy handling capacity; validates suitability for IEC 61000-4-5 Level 3/4 compliance testing. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Ultra-low leakage preserves system efficiency and avoids false triggering in high-impedance circuits. |
| TJ max | 150 °C - Maximum junction temperature; supports operation in enclosed industrial enclosures without forced cooling. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional configuration with cathode indicated by a visible band on the body. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or lower-potential node; completes clamping path during transient events. |
| Cathode | High-side connection point | Marked with band; connects to protected line (e.g., +48 V telecom rail); conducts surge current to ground when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against lightning surges (IEC 61000-4-5) and inductive switching spikes in telecom and industrial power systems. |
| Glass passivated chip junction | Ensures long-term stability of breakdown voltage and leakage current across temperature and lifetime, critical for field-reliability-critical applications. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for export and end-of-life processing without compromising electrical performance. |
| AEC-Q101 qualified (Revision B) | Validates reliability for automotive power electronics including battery management and DC-DC converter input stages. |
| MSL Level 1 (260 °C reflow peak) | Supports single-pass lead-free reflow assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Telecom Rectifier Output Protection | Industrial 48 V DC Power Bus |
|---|---|
Use Scenario: Protecting output stage of -48 V telecom rectifiers against lightning-induced common-mode surges and load-dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between +48 V rail and chassis ground. Use Value: Limits transient voltage to ≤602 V, preventing damage to downstream DC-DC converters and monitoring ICs rated for 65 V absolute maximum. |
Use Scenario: Safeguarding programmable logic controllers (PLCs) and motor drives powered from centralized 48 V industrial power supplies. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC bus, coordinated with upstream fuses and secondary TVS arrays. Use Value: Withstands 400 W surges while maintaining <1 µA leakage at 440 V, avoiding unnecessary power loss or false fault detection in always-on control systems. |
| Automotive DC-DC Converter Input | High-Voltage Sensor Signal Conditioning |
Use Scenario: Input-stage surge suppression for 12 V → 48 V bidirectional DC-DC converters in 48 V mild-hybrid vehicles. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional TVS placed at converter input to absorb load-dump transients up to 120 V. Use Value: Leverages 150 °C TJ max and MSL Level 1 compatibility to survive under-hood thermal cycling and automated SMT assembly without derating. |
Use Scenario: Protecting precision analog front-ends of HV battery cell voltage monitors exposed to switching noise from adjacent inverters. IC Role / Device Role / Timing Role: High-VBR TVS shunting transient energy away from op-amp inputs and ADC reference paths. Use Value: 418–462 V VBR range avoids interference with normal 400+ V battery stack measurements while clamping fast dv/dt spikes above 602 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ440A | Same VWM/VBR/VC ratings but in larger SMB (DO-214AA) package; 600 W PPPM rating; RθJA = 75 °C/W. | Better thermal performance and higher surge rating, but requires larger PCB footprint and different pad layout. | Select SMBJ440A when higher surge margin or improved thermal dissipation is required and board space permits. |
| 1.5KE440A | Through-hole TO-204AE (DO-201AE) package; same 440 V VWM; 1500 W PPPM; higher IFSM (200 A); no MSL rating. | Designed for manual or wave-soldered legacy systems; not suitable for automated SMT production or high-density layouts. | Choose 1.5KE440A only for through-hole prototyping, repair, or cost-sensitive non-SMT applications where reflow compatibility is irrelevant. |
Compared with SMBJ440A and 1.5KE440A, P4SMA440A-M3/61 offers optimal balance of SMT compatibility, halogen-free compliance, AEC-Q101 qualification, and compact DO-214AC footprint - making it preferred for new industrial and automotive designs requiring automated assembly and long-term supply stability.
Availability
P4SMA440A-M3/61 is available at Aetrix Electronics and suitable for telecom rectifier protection, industrial 48 V DC power buses, and automotive DC-DC converter inputs requiring stable component supply, halogen-free compliance, and AEC-Q101 reliability assurance.
Supply support for P4SMA440A-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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and application-specific optimization.
The P4SMA Series targets high-voltage transient suppression in space-constrained SMT applications, combining rugged TransZORB® technology with automotive-qualified variants and environmentally compliant packaging for industrial and transportation markets.
FAQ
What is the maximum clamping voltage of P4SMA440A-M3/61 under rated surge conditions?
The P4SMA440A-M3/61 has a maximum clamping voltage (VC) of 602 V at 0.5 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured under specified test conditions with 5.0 mm × 5.0 mm copper pads and represents the highest voltage the protected circuit will experience during a full-rated transient event. The P4SMA440A-M3/61 maintains this clamping performance consistently due to its glass-passivated junction and controlled avalanche characteristics.
Is P4SMA440A-M3/61 suitable for automotive applications?
Yes, P4SMA440A-M3/61 is AEC-Q101 qualified (Revision B), confirming its reliability for automotive power electronics including 48 V mild-hybrid DC-DC converters and battery management system inputs. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and halogen-free M3 construction meet stringent automotive manufacturing and operational requirements. The P4SMA440A-M3/61 is explicitly listed in Vishay's AEC-Q101 qualified devices table for the P4SMA series.
What does the "M3" suffix indicate in P4SMA440A-M3/61?
The "M3" suffix in P4SMA440A-M3/61 denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. It distinguishes this variant from the E3 (standard RoHS) and HM3 (AEC-Q101 + halogen-free) versions. The P4SMA440A-M3/61 is commercial-grade and not AEC-Q101 qualified - that status applies only to HM3/B-suffix variants per Vishay's ordering information table.
How does P4SMA440A-M3/61 differ from P4SMA440CA-M3/61?
P4SMA440A-M3/61 is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where current flows in one direction. P4SMA440CA-M3/61 is bidirectional, lacking polarity marking and designed for AC line or differential signal protection where transients may occur in either polarity. Their VBR, VC, and PPPM ratings differ: the CA version has lower VBR (376–418 V) and VC (548 V), reflecting its symmetrical breakdown behavior. The P4SMA440A-M3/61 is not interchangeable with the CA variant without circuit redesign.
What is the thermal resistance of P4SMA440A-M3/61, and how does it affect layout design?
P4SMA440A-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W, measured on minimum recommended 5.0 mm × 5.0 mm copper pads. To maintain safe operation under repetitive surges, PCB layout must provide adequate copper area and minimize trace length to ground. For continuous power dissipation near its 3.3 W rating, additional thermal vias or heatsinking may be needed - though the P4SMA440A-M3/61 is primarily rated for short-duration pulse handling rather than steady-state dissipation.
P4SMA440A-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):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 602V
- Current - Peak Pulse (10/1000µs):
- 500mA
- 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)
P4SMA440A-M3/61 FAQ
1.How can I place an order for P4SMA440A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA440A-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 P4SMA440A-M3/61 reliable?
The price and inventory of P4SMA440A-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 P4SMA440A-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA440A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA440A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA440A-M3/61?
P4SMA440A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA440A-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 P4SMA440A-M3/61?
For technical support, including P4SMA440A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA440A-M3/61 requirements.
6.How does Aetrix verify that P4SMA440A-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA440A-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 P4SMA440A-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA440A-M3/61?
All P4SMA440A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA440A-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 P4SMA440A-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA440A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA440A-M3/61 Tags
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