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Vishay General Semiconductor - Diodes Division P4SMA75CAHE3_A/H
- Part No.:
- P4SMA75CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA75CAHE3_A/H.pdf
- Description:
- TVS DIODE 64.1VWM 104VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,792
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Product details
Overview
P4SMA75CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 71.3 V minimum breakdown voltage (VBR), 64.1 V standoff voltage (VWM), 104 V maximum clamping voltage (VC) at 3.9 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 automotive and industrial control systems.
For engineers reviewing the P4SMA75CAHE3_A/H datasheet, P4SMA75CAHE3_A/H pinout, P4SMA75CAHE3_A/H application, or P4SMA75CAHE3_A/H equivalent, this device serves as an AEC-Q101 qualified, RoHS-compliant transient protector for bidirectional signal lines where low clamping voltage, fast response (<1 ns), and stable thermal performance up to +150 °C junction temperature are required.
Technical Context
The P4SMA75CAHE3_A/H operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients above its 64.1 V standoff threshold. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and repeatable breakdown behavior across temperature (-65 °C to +150 °C).
It delivers 400 W peak pulse power under 10/1000 µs waveform when mounted 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), enabling reliable operation in compact PCB layouts without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 64.1 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 71.3–78.8 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on during ESD or surge events. |
| VC (Clamping) | 104 V at 3.9 A - Peak voltage seen by protected circuit during 10/1000 µs transient; critical for IC-level overvoltage margining. |
| PPPM | 400 W - Sustained transient energy absorption capability; enables protection against IEC 61000-4-5 Level 3 surges. |
| IPPM | 3.9 A - Peak pulse current supported at rated clamping voltage; determines minimum series impedance for effective limiting. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMA (DO-214AC) - Surface-mount outline with 5.28 mm × 4.50 mm footprint; compatible with standard reflow profiles and automated placement. |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, MSL level 1 (260 °C peak reflow), no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive transients and anode during negative transients; symmetrical conduction enables dual-polarity clamping. |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in bidirectional construction; terminals are interchangeable with no marking required. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness - suitable for engine control, ADAS, and body electronics. |
| 400 W peak pulse power | Supports IEC 61000-4-5 4 kV surge testing with 2 Ω source impedance when properly laid out on 5 mm² copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage stress on downstream components - critical for protecting 75 V-rated MOSFETs and CAN FD transceivers. |
| Fast response time (<1 ns) | Clamps transients before propagation into sensitive analog or digital circuitry - essential for protecting high-speed sensor interfaces. |
| MSL Level 1 moisture sensitivity | Enables standard SMT assembly without baking; reduces manufacturing overhead and avoids moisture-induced popcorning. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus and analog sensor inputs (e.g., pressure, temperature) in engine control modules from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to limit transient excursions before reaching MCU ADC or LIN transceiver. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) by clamping to ≤104 V while surviving 400 W pulses without degradation. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary front-end TVS on each isolated input channel, working with series resistor and optocoupler to meet IEC 61000-4-4 EFT immunity. Use Value: Enables >20 kV ESD contact discharge immunity and 2 kV EFT burst protection without derating or parallel staging. |
| Telecom Power Rail Protection | Consumer Device USB Port Protection |
Use Scenario: Clamping induced surges on -48 V telecom power distribution boards caused by lightning-induced coupling or hot-swap events. IC Role / Device Role / Timing Role: Secondary-stage TVS on DC-DC converter input rails, coordinated with upstream MOVs to handle fast-rising transients. Use Value: Provides precise 104 V clamping with <1 µA leakage at -48 V nominal, minimizing standby power loss and thermal drift. |
Use Scenario: Protecting USB 2.0 data lines and VBUS in portable audio devices from ESD and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional TVS placed differential across D+/D− and common-mode across VBUS/GND to suppress ±15 kV contact ESD per IEC 61000-4-2. Use Value: Delivers sub-10 pF junction capacitance (typical) at 0 V bias - preserves USB 2.0 signal integrity up to 480 Mbps without equalization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Same VWM/VBR/VC specs but SMB (DO-214AA) package - 20 % larger footprint, 15 % higher RθJA (140 °C/W). | Preferred where board space allows larger pad layout and higher thermal mass is needed for repetitive surge duty. | Select SMBJ75CA only if existing layout accommodates 6.2 mm × 3.6 mm footprint and thermal design requires lower junction rise per watt. |
| SMCJ75CA | Higher 1500 W PPPM, same VC = 121 V at 12.3 A - larger SMC (DO-214AB) package, 2× footprint area, 100 °C/W RθJA. | Used in primary surge protection stages (e.g., AC/DC front ends) requiring higher single-pulse energy handling. | Choose SMCJ75CA when protecting against direct lightning-induced surges (>6 kV) where 400 W is insufficient, accepting larger size and cost. |
Compared with SMBJ75CA and SMCJ75CA, the P4SMA75CAHE3_A/H offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W capability - making it ideal for space-constrained, automotive-grade secondary protection where precise clamping and manufacturability are prioritized over ultra-high energy rating.
Availability
P4SMA75CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom power distribution, and consumer USB port protection requiring stable component supply, AEC-Q101 compliance, and consistent clamping performance across production lots.
Supply support for P4SMA75CAHE3_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, MOSFETs, and passive components with emphasis on reliability, precision, and automotive-grade qualification.
The P4SMA75CAHE3_A/H belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, low-leakage transient suppression in harsh electromagnetic environments - targeting automotive, industrial, and telecom infrastructure applications.
FAQ
What is the clamping voltage of the P4SMA75CAHE3_A/H at its rated peak pulse current?
The P4SMA75CAHE3_A/H has a maximum clamping voltage (VC) of 104 V at 3.9 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured with the device mounted on 5.0 mm × 5.0 mm copper pads per JEDEC standards and reflects the actual overvoltage stress imposed on protected circuitry during surge events. The P4SMA75CAHE3_A/H maintains this clamping performance across its full operating temperature range.
Is the P4SMA75CAHE3_A/H suitable for automotive applications?
Yes, the P4SMA75CAHE3_A/H 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 temperature cycling, high-temperature reverse bias, and mechanical shock - validated for deployment in engine control units, body electronics, and ADAS sensor modules where reliability under vibration and thermal stress is mandatory. The P4SMA75CAHE3_A/H carries full traceability and lot-level qualification data per automotive standards.
How does the bidirectional configuration of the P4SMA75CAHE3_A/H affect its PCB layout?
The P4SMA75CAHE3_A/H has no polarity marking and symmetrical terminal behavior, so either end may connect to line or ground - simplifying layout and eliminating orientation errors during automated placement. Its DO-214AC (SMA) package requires two 5.0 mm × 5.0 mm copper pads for optimal thermal and surge performance, and no keep-out zones are needed for cathode band alignment. This symmetry makes the P4SMA75CAHE3_A/H especially suitable for differential signal protection like RS-485 or CAN bus lines.
What is the maximum junction temperature rating for the P4SMA75CAHE3_A/H?
The P4SMA75CAHE3_A/H has a maximum junction temperature (TJ) rating of +150 °C, verified per AEC-Q101 test conditions and sustained under continuous power dissipation up to 3.3 W at TA = 50 °C. This rating enables reliable operation in under-hood automotive environments and enclosed industrial enclosures where ambient temperatures exceed 100 °C. Derating curves in the official Vishay datasheet (Doc #88367) define allowable power reduction above 25 °C ambient, ensuring the P4SMA75CAHE3_A/H remains within safe thermal limits across its full specification range.
Does the P4SMA75CAHE3_A/H meet any industry safety or flammability standards?
Yes, the P4SMA75CAHE3_A/H uses molding compound rated UL 94 V-0 for flammability and is Underwriters Laboratory (UL) Recognized under file E136766 for protector classification per UL 497B. It also complies with JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow requirements (260 °C peak). These certifications confirm suitability for safety-critical applications in telecom infrastructure, industrial controls, and automotive systems where fire risk and long-term solder joint integrity are regulated concerns. The P4SMA75CAHE3_A/H documentation includes full test reports supporting these claims.
P4SMA75CAHE3_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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 3.9A
- 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)
P4SMA75CAHE3_A/H FAQ
1.How can I place an order for P4SMA75CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA75CAHE3_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 P4SMA75CAHE3_A/H reliable?
The price and inventory of P4SMA75CAHE3_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 P4SMA75CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA75CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA75CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA75CAHE3_A/H?
P4SMA75CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA75CAHE3_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 P4SMA75CAHE3_A/H?
For technical support, including P4SMA75CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA75CAHE3_A/H requirements.
6.How does Aetrix verify that P4SMA75CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA75CAHE3_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 P4SMA75CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA75CAHE3_A/H?
All P4SMA75CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA75CAHE3_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 P4SMA75CAHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA75CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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