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Vishay General Semiconductor - Diodes Division P4SMA43AHE3_A/H
- Part No.:
- P4SMA43AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43AHE3_A/H.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,200
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Product details
Overview
P4SMA43AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping inductive switching transients and ESD events on power and signal lines. It features 43 V breakdown voltage (VBR = 40.9–45.2 V at IT = 1.0 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, sensor interfaces, and microcontroller I/O in automotive and industrial power supplies.
For engineers reviewing the P4SMA43AHE3_A/H datasheet, P4SMA43AHE3_A/H pinout, P4SMA43AHE3_A/H application, or P4SMA43AHE3_A/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), clamping performance under surge conditions, and direct alternatives for circuit protection redesign or supply continuity planning.
Technical Context
The P4SMA43AHE3_A/H operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 40.9–45.2 V breakdown range. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for suppressing sub-microsecond transients induced by relay switching or motor commutation.
Rated for 400 W peak pulse power (10/1000 µs), it delivers 6.7 A IPPM at 59.3 V clamping while maintaining 1.0 µA max reverse leakage at 36.8 V. With AEC-Q101 qualification and MSL Level 1 moisture sensitivity, it supports automotive-grade reliability in engine control units and body electronics without derating up to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1.0 mA test current - defines precise avalanche initiation threshold for repeatable overvoltage triggering |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA; sets safe margin below VBR |
| VC @ IPPM | 59.3 V at 6.7 A - clamped voltage during 400 W transient; determines protected IC's maximum stress level |
| PPPM | 400 W (10/1000 µs) - peak surge energy handling capacity; validates robustness against IEC 61000-4-5 Level 4 surges |
| RθJA | 120 °C/W - junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB thermal layout requirements |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
| AEC-Q101 | Qualified - certified for automotive electronic systems per stress test requirements including HTOL, TCT, and ESD |
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; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional TVS configuration; carries forward surge current up to 40 A (8.3 ms half-sine) |
| Cathode | Avalanche clamping terminal | Marked with band; connected to protected line (e.g., 3.3 V rail or CAN bus); conducts reverse surge current to clamp transients |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity testing up to Level 4 (4 kV line-to-earth) without degradation |
| AEC-Q101 qualified | Validated for automotive applications including powertrain and ADAS modules requiring long-term reliability under thermal cycling |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and low leakage (<1 µA) across -65 °C to +150 °C operating range |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture-induced popcorn failure |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response), improving protection margin for 3.3 V/5 V logic |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver pins from load-dump spikes (up to 40 V) and alternator ripple during ignition cycling. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp reverse transients before they reach sensitive analog front-end or communication ICs. Use Value: Maintains system uptime by limiting voltage stress to ≤59.3 V during 400 W surges, preventing latch-up or gate oxide damage in 3.3 V MCU I/O cells. |
Use Scenario: Shields 24 V digital input optocoupler circuits from inductive kickback generated by solenoid valve switching in factory automation. IC Role / Device Role / Timing Role: Mounted across input terminals to divert >6 A surge current away from series current-limiting resistor and opto-LED. Use Value: Enables reliable 100 k-cycle solenoid actuation without degradation, validated by AEC-Q101 HTOL testing at 150 °C for 1000 hours. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Input Stage |
Use Scenario: Suppresses commutation noise and back-EMF from brushed DC motors in washing machine control boards exposed to repeated 100 V transients. IC Role / Device Role / Timing Role: Placed at motor driver IC power input to limit voltage excursion during MOSFET turn-off, reducing EMI and gate stress. Use Value: Clamps 10/1000 µs surges to 59.3 V at 6.7 A, extending MOSFET lifetime and meeting CISPR 32 Class B conducted emissions limits. |
Use Scenario: Guards AC-DC converter primary-side rectifier output against lightning-induced surges entering via mains input in VoIP power adapters. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-rectified DC bus to absorb 400 W line-to-ground transients before bulk capacitor. Use Value: Survives 1000+ surge events at rated power without parameter shift, confirmed by repetitive IPPM endurance testing per JEDEC JESD22-A114. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/5A | Same VBR (40.9–45.2 V), identical SMA package, but rated for 400 W with 10/1000 µs waveform and RθJA = 120 °C/W; lacks AEC-Q101 qualification | Commercial-grade only; not approved for automotive under-hood use or extended temperature validation | Select when cost-sensitive industrial designs require same clamping performance without automotive certification |
| 1.5SMC43A | Higher package thermal mass (SMC/DO-214AB), 400 W rating, VBR = 40.9–45.2 V, but RθJA = 60 °C/W and larger footprint (7.11 × 6.22 mm vs. SMA's 4.93 × 3.99 mm) | Better thermal dissipation in high-duty-cycle surge environments but incompatible with space-constrained layouts | Choose for high-reliability industrial power supplies where board area permits larger SMC package and higher sustained power handling |
Compared with P4SMA43AHE3_A/H, SMAJ43A-E3/5A offers identical electrical protection but no automotive qualification, while 1.5SMC43A provides superior thermal performance in larger footprints - making P4SMA43AHE3_A/H optimal for AEC-Q101-compliant, space-constrained automotive and industrial edge nodes.
Availability
P4SMA43AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC inputs, consumer appliance motor drives, and telecom power supply protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA43AHE3_A/H 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 power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series is engineered for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, low clamping voltage, and surface-mount manufacturability are essential.
FAQ
What is the clamping voltage of P4SMA43AHE3_A/H at its rated peak pulse current?
The P4SMA43AHE3_A/H has a maximum clamping voltage (VC) of 59.3 V at its rated peak pulse current (IPPM) of 6.7 A, measured under the standard 10/1000 µs waveform. This value ensures protected downstream components like microcontrollers or transceivers remain within safe voltage limits during surge events. The P4SMA43AHE3_A/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is P4SMA43AHE3_A/H qualified for automotive applications?
Yes, P4SMA43AHE3_A/H is AEC-Q101 qualified, meaning it has passed rigorous stress tests including high-temperature operating life (HTOL), temperature cycling (TCT), and electrostatic discharge (ESD) per automotive reliability standards. This qualification confirms its suitability for under-hood and cabin electronics such as engine control units, body control modules, and ADAS sensors - a key differentiator from commercial-grade equivalents like SMAJ43A-E3/5A.
What is the standoff voltage (VWM) of P4SMA43AHE3_A/H, and why does it matter?
The standoff voltage (VWM) of P4SMA43AHE3_A/H is 36.8 V - the maximum continuous reverse voltage it can block without exceeding 1.0 µA leakage current. This parameter establishes the design margin between normal operating voltage and avalanche onset, ensuring no false triggering during nominal 24 V or 36 V system operation. Selecting a VWM ≥1.1× nominal rail voltage prevents unnecessary conduction while preserving headroom for transients.
How does the thermal resistance of P4SMA43AHE3_A/H affect PCB layout?
P4SMA43AHE3_A/H 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 junction temperature below 150 °C during repetitive surges, designers must allocate adequate copper area and consider airflow or adjacent heat sources. Reducing pad size or omitting thermal vias increases RθJA, risking premature thermal shutdown or parameter drift - the P4SMA43AHE3_A/H datasheet specifies exact pad dimensions for rated performance.
What packaging and reel options are available for P4SMA43AHE3_A/H?
P4SMA43AHE3_A/H is supplied in 7" diameter plastic tape and reel with a base quantity of 1800 units (package code H). It uses RoHS-compliant matte tin-plated leads and meets JESD 201 Class 2 whisker resistance. The "_A/H" suffix denotes AEC-Q101 qualification and 7" reel format; alternate formats include 13" reels (code I) for high-volume production. All variants comply with MSL Level 1, supporting standard lead-free reflow profiles without baking.
P4SMA43AHE3_A/H 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:
- -
- 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_A/H FAQ
1.How can I place an order for P4SMA43AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43AHE3_A/H 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_A/H reliable?
The price and inventory of P4SMA43AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA43AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA43AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43AHE3_A/H?
P4SMA43AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43AHE3_A/H 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_A/H?
For technical support, including P4SMA43AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43AHE3_A/H requirements.
6.How does Aetrix verify that P4SMA43AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA43AHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA43AHE3_A/H?
All P4SMA43AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43AHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for P4SMA43AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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