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Vishay General Semiconductor - Diodes Division P4SMA43A-E3/61
- Part No.:
- P4SMA43A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43A-E3/61.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:15,633
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Product details
Overview
P4SMA43A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 43 V breakdown voltage (VBR = 40.9–45.2 V at 1 mA), 36.8 V standoff voltage (VWM), 59.3 V maximum clamping voltage (VC) at 6.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P4SMA43A-E3/61 datasheet, P4SMA43A-E3/61 pinout, P4SMA43A-E3/61 application, or P4SMA43A-E3/61 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, and AEC-Q101 qualification status for automotive-grade deployment.
Technical Context
The P4SMA43A-E3/61 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at VWM), while the SMA package supports automated placement and meets MSL Level 1 reflow standards (260 °C peak).
It delivers 400 W peak pulse power (10/1000 µs) up to TA = 25 °C, derating linearly above that temperature per Fig. 2; thermal resistance is RθJA = 120 °C/W (typ.) and RθJL = 30 °C/W (typ.), enabling reliable operation in compact PCB layouts with minimal copper pad area (0.2" × 0.2").
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1 mA - defines precise clamping onset range for overvoltage protection |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 59.3 V at 6.7 A - clamped voltage during 10/1000 µs surge, limiting stress on downstream components |
| PPPM | 400 W - peak transient energy absorption capability under standard surge waveform |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms), supporting inrush and switching transients |
| TJ max | +150 °C - maximum junction temperature enabling use in high-ambient industrial environments |
| Package | SMA (DO-214AC) - surface-mount footprint compatible with standard SMT assembly and IPC-7351B land patterns |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, polarity indicated by cathode band on unidirectional devices; compliant with UL 94 V-0 flammability rating and J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge or ESD events |
| Cathode | Reverse-biased clamping terminal | Connected to higher-potential side; avalanches to clamp transients when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges without external heat sinking |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive ICs |
| Glass passivated chip junction | Ensures long-term stability of VBR and low leakage across temperature and lifetime |
| AEC-Q101 qualified (P4SMA43A-E3/61 variant) | Validated for automotive powertrain and body electronics applications requiring reliability certification |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 36 V DC input rails in PLC modules from inductive switching spikes and load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rail and ground to clamp positive-going surges before they reach DC-DC converters. Use Value: Limits transient voltage to ≤59.3 V, preserving 40 V-rated input capacitors and MOSFET gate oxides. |
Use Scenario: Safeguarding CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control units. IC Role / Device Role / Timing Role: Standoff-connected TVS on signal line to ground, responding within <1 ns to ESD and ISO 7637-2 pulses. Use Value: Maintains signal integrity below 36.8 V standby, with sub-100 ns clamping response preventing latch-up in transceivers. |
| Consumer Device USB Port Protection | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-level overvoltage protection on 5 V USB VBUS lines in smart home hubs and docking stations. IC Role / Device Role / Timing Role: Unidirectional TVS placed after primary fuse and upstream of USB controller's internal protection. Use Value: Absorbs 400 W surges without degradation, ensuring compliance with IEC 61000-4-2 ±15 kV contact discharge. |
Use Scenario: Front-end transient suppression on 48 V phantom-powered telecom line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Rail-to-ground TVS on power feed path, coordinated with gas discharge tubes for multi-stage protection. Use Value: Withstands repetitive 10/1000 µs surges up to 400 W, extending system uptime in outdoor cabinet deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A-E3/52 | Higher package thermal mass (SMB/DO-214AA); RθJA = 85 °C/W (typ.), VC = 69.4 V @ 5.8 A | Better power handling in sustained surge scenarios but larger footprint; less suitable for ultra-dense layouts | Select SMBJ43A-E3/52 when board space allows and higher thermal margin is required for repeated surges |
| 1.5KE43A | Through-hole TO-204AE (DO-41); 1500 W peak power, VC = 69.4 V @ 21.7 A; no AEC-Q101 option | Designed for legacy through-hole assembly; not suitable for automated SMT production or automotive qualification | Choose 1.5KE43A only for prototyping or repair of existing through-hole designs where rework is acceptable |
Compared with P4SMA43A-E3/61, SMBJ43A-E3/52 offers superior thermal dissipation but occupies ~30% more PCB area, while 1.5KE43A provides higher surge capacity but lacks SMT compatibility and automotive qualification - making P4SMA43A-E3/61 optimal for space-constrained, high-reliability SMT applications.
Availability
P4SMA43A-E3/61 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, consumer USB protection, and telecom line card surge suppression requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101 validation.
Supply support for P4SMA43A-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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and consumer electronics - delivering standardized 400 W surge capability in compact SMA packages with AEC-Q101 and RoHS compliance built-in.
FAQ
What is the maximum clamping voltage of the P4SMA43A-E3/61 under a 10/1000 µs surge?
The P4SMA43A-E3/61 has a maximum clamping voltage (VC) of 59.3 V at 6.7 A peak pulse current under the standard 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet (Document Number: 88367, Rev. 09-Jan-2024) and reflects the actual voltage seen by protected circuitry during surge events - critical for verifying margin against downstream component ratings.
Is the P4SMA43A-E3/61 qualified for automotive applications?
Yes, the P4SMA43A-E3/61 is AEC-Q101 qualified, as confirmed in the Vishay P4SMA Series datasheet (Rev. 09-Jan-2024, Section "MECHANICAL DATA"). The "E3" suffix denotes RoHS-compliant commercial grade, and the base P4SMA43A part number falls within the AEC-Q101 qualified range (P4SMA6.8A to P4SMA220A). This makes P4SMA43A-E3/61 suitable for automotive body electronics and powertrain subsystems.
What is the standoff voltage (VWM) and why does it matter for P4SMA43A-E3/61 selection?
The standoff voltage (VWM) of the P4SMA43A-E3/61 is 36.8 V - the maximum continuous reverse voltage it can block without significant leakage current (<1 µA). This parameter ensures the device remains non-conductive during normal operation while allowing sufficient margin below the 40.9–45.2 V breakdown range. Selecting a VWM ≥10–15% above the system's maximum steady-state voltage prevents false triggering and thermal runaway.
How does the thermal resistance of P4SMA43A-E3/61 affect its surge handling capability?
The P4SMA43A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W. This means each watt of sustained power raises the junction temperature by 120 °C above ambient - directly limiting its ability to absorb repetitive surges. Derating curves in Figure 2 of the datasheet show usable PPPM drops to ~250 W at TA = 75 °C, so proper PCB copper pad design (0.2" × 0.2") is essential to maintain full 400 W rating.
Can P4SMA43A-E3/61 be used in bidirectional configurations?
No, P4SMA43A-E3/61 is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA"). Bidirectional variants such as P4SMA43CA exist for AC-coupled or dual-polarity signal lines. Using P4SMA43A-E3/61 in bidirectional applications would leave the forward direction unprotected - potentially causing catastrophic failure during negative transients. Always match device polarity to circuit topology.
P4SMA43A-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):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- Power - Peak Pulse:
- 400W
- 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)
P4SMA43A-E3/61 FAQ
1.How can I place an order for P4SMA43A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43A-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 P4SMA43A-E3/61 reliable?
The price and inventory of P4SMA43A-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 P4SMA43A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA43A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43A-E3/61?
P4SMA43A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43A-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 P4SMA43A-E3/61?
For technical support, including P4SMA43A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43A-E3/61 requirements.
6.How does Aetrix verify that P4SMA43A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA43A-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 P4SMA43A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA43A-E3/61?
All P4SMA43A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43A-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 P4SMA43A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA43A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA43A-E3/61 Tags
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