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Vishay General Semiconductor - Diodes Division P4SMA43AHE3/61
- Part No.:
- P4SMA43AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43AHE3/61.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,898
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Product details
Overview
P4SMA43AHE3/61 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 automotive-grade sensor interfaces and industrial I/O circuits.
For engineers reviewing the P4SMA43AHE3/61 datasheet, P4SMA43AHE3/61 pinout, P4SMA43AHE3/61 application, or P4SMA43AHE3/61 equivalent, key selection criteria include its AEC-Q101 qualification, SMA (DO-214AC) package compatibility, unidirectional polarity with cathode band marking, and thermal resistance (RθJA = 120 °C/W) under standard PCB pad layout.
Technical Context
The P4SMA43AHE3/61 operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast response time (<1 ns) and low incremental surge resistance. Its clamping behavior is defined by a well-controlled breakdown knee and stable VC/IPPM relationship across temperature (–65 °C to +150 °C).
It is rated for 400 W peak pulse power (10/1000 µs) at TA = 25 °C, derating linearly above 25 °C per Fig. 2, and supports repetitive surge duty cycles up to 0.01 % - validated under JEDEC J-STD-020 MSL Level 1 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at IT = 1 mA - defines reliable avalanche initiation threshold for overvoltage protection |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 59.3 V at 6.7 A - clamped voltage during 10/1000 µs transient, limiting stress on downstream ICs |
| PPPM | 400 W - peak transient energy absorption capability under standardized surge waveform |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms), supporting inductive load switching events |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, measured on 0.2" × 0.2" copper pads |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; enables forward-biased conduction during fault conditions |
| Cathode | Reverse-biased clamping terminal | Marked with band; connected to higher-potential rail to clamp positive transients to ground-referenced path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable breakdown characteristics and long-term reliability under thermal cycling |
| Low profile SMA package | Enables high-density PCB layouts and compatibility with automated SMT assembly processes |
| 400 W peak pulse power (10/1000 µs) | Provides robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surge events |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking preconditioning |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp positive-going surges while maintaining DC integrity. Use Value: Limits transient voltage to ≤59.3 V, preventing damage to 3.3 V/5 V interface ICs with 6 V absolute maximum ratings. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from solenoid coils and relay contacts. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V supply rails and discrete input lines to absorb repetitive 400 W pulses without degradation. Use Value: Maintains system uptime by preventing latch-up or gate oxide rupture in microcontroller GPIOs and optocoupler drivers. |
| Telecom Power Rail Protection | Consumer Device USB Port ESD |
Use Scenario: Secondary-level surge suppression on 48 V PoE injectors and telecom power distribution boards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converters, absorbing energy before it reaches sensitive regulation circuitry. Use Value: Withstands 400 W pulses and 40 A surge currents, reducing need for multi-stage protection schemes. |
Use Scenario: Board-level ESD and surge protection for USB 2.0 data lines and VBUS in smart home hubs and portable audio devices. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on VBUS line to suppress contact discharge (IEC 61000-4-2 ±15 kV) without signal distortion. Use Value: Clamps VBUS to <59.3 V within nanoseconds, preserving USB enumeration and preventing host controller reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A | Same VBR range (40.9–45.2 V), identical SMA package, but not AEC-Q101 qualified; RθJA = 125 °C/W | Targeted at commercial/industrial use only; unsuitable for automotive production without additional qualification | Select when AEC-Q101 compliance is not required and cost optimization is prioritized |
| 1.5SMC43A | Higher power rating (1500 W), larger SMC (DO-214AB) package, VC = 69.4 V at 21.7 A; same VWM = 36.8 V | Better suited for primary-level surge protection where board space allows larger footprint and higher energy handling | Choose when system-level surge tests exceed IEC 61000-4-5 Level 4 and require >400 W absorption |
Compared with SMAJ43A, P4SMA43AHE3/61 delivers automotive-grade reliability and tighter thermal performance; compared with 1.5SMC43A, it trades off peak power for compact size and lower parasitic inductance - critical for high-speed signal line protection.
Availability
P4SMA43AHE3/61 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and telecom power systems requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P4SMA43AHE3/61 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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The P4SMA series was developed for high-volume, space-constrained applications demanding AEC-Q101-compliant transient suppression in automotive and industrial environments - balancing power density, thermal stability, and manufacturability.
FAQ
What is the maximum clamping voltage of the P4SMA43AHE3/61 under standard test conditions?
The P4SMA43AHE3/61 has a maximum clamping voltage (VC) of 59.3 V at 6.7 A peak pulse current (IPPM) using the 10/1000 µs waveform. This value is measured at TA = 25 °C on standard 0.2" × 0.2" copper pads and represents the upper limit of voltage seen by protected circuitry during a transient event. The P4SMA43AHE3/61 maintains this clamping performance across its specified operating temperature range.
Is the P4SMA43AHE3/61 suitable for automotive applications?
Yes, the P4SMA43AHE3/61 is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101-qualified construction. It meets requirements for under-hood and cabin electronics, including temperature cycling, humidity resistance, and mechanical shock testing per the AEC standard. The P4SMA43AHE3/61 is commonly deployed in ADAS sensor modules and body control units.
What does the "HE3/61" suffix indicate in P4SMA43AHE3/61?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification, while "/61" specifies packaging in 7-inch diameter plastic tape and reel with 1800 units per reel. This ordering code ensures traceability, moisture sensitivity level (MSL) compliance (Level 1), and compatibility with high-speed pick-and-place equipment. The P4SMA43AHE3/61 is not interchangeable with non-HE3 variants in automotive production due to qualification differences.
How does the P4SMA43AHE3/61 compare to bidirectional TVS diodes like P4SMA43CA?
The P4SMA43AHE3/61 is unidirectional and intended for DC-biased lines where only positive transients require suppression - such as 24 V supply rails or VBUS lines. In contrast, P4SMA43CA is bidirectional and used on AC-coupled or floating signal paths like RS-485 or Ethernet. The P4SMA43AHE3/61 offers lower leakage at VWM and sharper breakdown knee than its bidirectional counterpart, making it preferable for precision voltage rail protection.
What is the thermal resistance of the P4SMA43AHE3/61, and how does it affect PCB layout?
The P4SMA43AHE3/61 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. To maintain safe junction temperatures under repetitive surge conditions, designers must adhere to this pad layout or add thermal vias to inner ground planes. Deviating from the recommended footprint increases RθJA, risking thermal runaway during sustained transient activity. The P4SMA43AHE3/61's thermal performance is validated only under these conditions.
P4SMA43AHE3/61 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:
- 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)
P4SMA43AHE3/61 FAQ
1.How can I place an order for P4SMA43AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43AHE3/61 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 P4SMA43AHE3/61 reliable?
The price and inventory of P4SMA43AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA43AHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA43AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43AHE3/61?
P4SMA43AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43AHE3/61 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 P4SMA43AHE3/61?
For technical support, including P4SMA43AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43AHE3/61 requirements.
6.How does Aetrix verify that P4SMA43AHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA43AHE3/61 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 P4SMA43AHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA43AHE3/61?
All P4SMA43AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43AHE3/61, 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 P4SMA43AHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA43AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA43AHE3/61 Tags
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