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Vishay General Semiconductor - Diodes Division P4SMA43AHE3/5A
- Part No.:
- P4SMA43AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43AHE3/5A.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,330
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Product details
Overview
P4SMA43AHE3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P4SMA series, 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 - suitable for protecting MOSFETs, ICs, and sensor interfaces in automotive and industrial power rails.
For engineers reviewing the P4SMA43AHE3/5A datasheet, P4SMA43AHE3/5A pinout, P4SMA43AHE3/5A application, or P4SMA43AHE3/5A equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, fast response time, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive electronics and ruggedized industrial control designs.
Technical Context
The P4SMA43AHE3/5A operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold to divert transient energy to ground. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at VWM), while the SMA (DO-214AC) package enables automated placement and meets UL 94 V-0 flammability requirements.
Thermally, it supports operation from −65 °C to +150 °C junction temperature, with RθJA = 120 °C/W and RθJL = 30 °C/W, enabling reliable performance under pulsed surge conditions when mounted on 5.0 mm × 5.0 mm copper pads. The cathode band identifies polarity, and its 40 A IFSM rating supports robust handling of 8.3 ms half-sine surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 40.9–45.2 V at 1 mA - defines precise clamping onset threshold for overvoltage protection |
| Standoff Voltage VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| Clamping Voltage VC | 59.3 V at 6.7 A (10/1000 µs) - limits peak voltage seen by protected circuit during surge |
| Peak Pulse Power PPPM | 400 W - sustains transient energy without failure under standard lightning/surge test waveform |
| Peak Pulse Current IPPM | 6.7 A - maximum non-repetitive surge current the device can safely shunt |
| Junction Temperature Range | −65 °C to +150 °C - supports deployment in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per stress-test requirements including HTRB, HTGB, and TCT |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to protected line's lower-potential side (e.g., ground or return path) |
| Cathode | Reverse-biased clamping terminal | Connected to protected line's higher-potential side (e.g., VCC, signal rail, or input) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| 400 W peak pulse power (10/1000 µs) | Handles IEC 61000-4-5 Level 4 surge events without degradation |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes voltage overshoot during transient suppression, reducing stress on downstream ICs |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without prebaking |
| Glass-passivated junction | Ensures long-term parameter stability and low leakage across temperature and lifetime |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power distribution networks in engine control modules against load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input to clamp spikes up to 100 V. Use Value: Limits voltage to ≤59.3 V during 6.7 A surges, preventing latch-up or damage to downstream PMICs and microcontrollers. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in pressure/temperature transmitters exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: TVS connected between signal line and ground to suppress fast-rising transients before they reach op-amp or ADC inputs. Use Value: Clamps 1 kV ESD pulses (IEC 61000-4-2) within <1 ns, preserving signal integrity and measurement accuracy. |
| Consumer Device USB Port Protection | Telecom Line Card Surge Suppression |
Use Scenario: Adding secondary overvoltage protection on VBUS lines of USB-C ports in portable medical devices and handheld test equipment. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of USB power switch to absorb hot-plug and cable-induced surges. Use Value: Withstands 36.8 V continuous operation and clamps 59.3 V peaks, ensuring compliance with USB PD 3.0 voltage tolerances. |
Use Scenario: Front-end protection for Ethernet PHY interfaces and RS-485 transceivers in base station remote radio units. IC Role / Device Role / Timing Role: TVS array component used in conjunction with common-mode chokes to meet GR-1089-CORE Level 3 lightning immunity. Use Value: Delivers 400 W pulse handling with <1 ns response, limiting induced surges to safe levels for isolated data-line drivers. |
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 600 W PPPM rating; SMB (DO-214AA) package - larger footprint, lower RθJA (85 °C/W) | Better suited for higher-energy surges where board space allows larger package | Select when system-level surge testing exceeds 400 W or thermal margin is constrained |
| 1.5KE43A | Through-hole TO-204AE (DO-201AD); same VBR/VC specs but 1500 W PPPM and higher IFSM (100 A) | Used in legacy industrial power supplies where through-hole assembly remains standard | Choose for cost-sensitive, non-automated production or where mechanical robustness outweighs SMT density needs |
Compared with SMBJ43A-E3/52 and 1.5KE43A, the P4SMA43AHE3/5A offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and verified 400 W surge capability - making it preferred for new automotive and space-constrained industrial designs requiring RoHS-compliant, high-volume SMT assembly.
Availability
P4SMA43AHE3/5A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, and telecom line cards requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P4SMA43AHE3/5A 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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The P4SMA series was developed for high-volume, high-reliability transient suppression in automotive, industrial, and consumer electronics - prioritizing AEC-Q101 qualification, tight parametric control, and compatibility with modern SMT manufacturing.
FAQ
What is the clamping voltage of the P4SMA43AHE3/5A under a 10/1000 µs surge?
The P4SMA43AHE3/5A has a maximum clamping voltage (VC) of 59.3 V at 6.7 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads) and defines the upper voltage limit imposed on protected circuits during transient events. It is confirmed in the Vishay P4SMA datasheet revision 09-Jan-2024, page 2.
Is the P4SMA43AHE3/5A qualified for automotive use?
Yes, the P4SMA43AHE3/5A is AEC-Q101 qualified, as indicated by the "HE3" suffix in its ordering code. This qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), validating its suitability for under-hood and chassis-mounted automotive electronics. The qualification applies specifically to the P4SMA43AHE3/5A variant per Vishay documentation.
What does the "/5A" suffix mean in P4SMA43AHE3/5A?
The "/5A" suffix denotes the packaging configuration: 13-inch diameter plastic tape and reel containing 7500 units. This is distinct from "/61", which indicates a 7-inch reel with 1800 units. The "/5A" format supports high-volume SMT assembly lines requiring extended reel life and reduced changeover frequency. All electrical and thermal specifications of the P4SMA43AHE3/5A remain identical regardless of reel size.
How does the P4SMA43AHE3/5A differ from bidirectional variants like P4SMA43CA?
The P4SMA43AHE3/5A is unidirectional, meaning it conducts only in reverse bias above VBR and blocks forward current - ideal for DC power rail protection. In contrast, P4SMA43CA is bidirectional, offering symmetrical clamping in both polarities for AC signal or data line protection. Their VBR, VC, and PPPM ratings differ slightly due to internal construction; the P4SMA43AHE3/5A has VWM = 36.8 V, while P4SMA43CA has VWM = 36.8 V in each direction but different leakage behavior.
What is the maximum operating junction temperature for the P4SMA43AHE3/5A?
The P4SMA43AHE3/5A has a maximum operating junction temperature (TJ) of +150 °C, as specified in the Absolute Maximum Ratings table of the Vishay P4SMA datasheet. This rating enables reliable operation in under-hood automotive environments and high-ambient industrial enclosures. Derating of peak pulse power begins above TA = 25 °C per Figure 2 in the datasheet, with full derating applied at TJ = 150 °C.
P4SMA43AHE3/5A 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA43AHE3/5A FAQ
1.How can I place an order for P4SMA43AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43AHE3/5A 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 P4SMA43AHE3/5A reliable?
The price and inventory of P4SMA43AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA43AHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA43AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43AHE3/5A?
P4SMA43AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43AHE3/5A 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 P4SMA43AHE3/5A?
For technical support, including P4SMA43AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43AHE3/5A requirements.
6.How does Aetrix verify that P4SMA43AHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA43AHE3/5A 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 P4SMA43AHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA43AHE3/5A?
All P4SMA43AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43AHE3/5A, 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 P4SMA43AHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA43AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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