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Vishay General Semiconductor - Diodes Division P4SMA75CAHE3/5A
- Part No.:
- P4SMA75CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA75CAHE3/5A.pdf
- Description:
- TVS DIODE 64.1VWM 104VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,134
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Product details
Overview
P4SMA75CAHE3/5A 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 maximum standoff voltage (VWM), 104 V clamping voltage (VC) at 3.9 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor protection, industrial I/O interfaces, and telecom line surge suppression.
For engineers reviewing the P4SMA75CAHE3/5A datasheet, P4SMA75CAHE3/5A pinout, P4SMA75CAHE3/5A application, or P4SMA75CAHE3/5A equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), clamping performance under standardized surge waveforms, and real-world design implications for PCB layout and transient immunity validation.
Technical Context
The P4SMA75CAHE3/5A operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients above its standoff voltage. Its glass-passivated junction enables fast response (<1 ns), low incremental surge resistance, and stable breakdown characteristics across -65 °C to +150 °C operating range.
It is rated for 400 W peak pulse power (10/1000 µs) at TA = 25 °C, derated linearly above 25 °C per Fig. 2, with 3.3 W steady-state power dissipation on infinite heatsink at 50 °C. The device meets MSL Level 1 per J-STD-020 and is AEC-Q101 qualified for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 64.1 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown, min) | 71.3 V at 1 mA - Minimum voltage at which avalanche conduction begins; ensures reliable triggering during overvoltage events |
| VC (Clamping) | 104 V at 3.9 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; determines downstream component stress |
| IPPM | 3.9 A - Peak current handled at VC; used with PCB copper pad area (0.2" × 0.2") to validate thermal survival |
| PPPM | 400 W - Surge energy absorption capacity; defines immunity level against IEC 61000-4-5 Level 3/4 transients |
| TJ max | +150 °C - Maximum junction temperature; constrains ambient derating and board-level thermal management |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance; informs minimum copper pour area required for sustained operation |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during negative surges; connects to line being protected |
| Cathode | Transient current entry (positive half-cycle) | Conducts during positive surges; connects to line being protected |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 3rd/4th-level surge immunity testing with minimal PCB footprint |
| AEC-Q101 qualification | Validates reliability for automotive under-hood and infotainment applications per stress test requirements |
| MSL Level 1 (260 °C peak reflow) | Permits standard SMT assembly without moisture sensitivity handling or baking |
| Glass passivated junction | Ensures stable VBR tolerance (±5%) and low leakage (<1 µA at VWM) over lifetime and temperature |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground to clamp transients before reaching MCU or signal conditioner IC. Use Value: Limits voltage to ≤104 V during 10/1000 µs surges, preventing latch-up or gate oxide damage in AEC-Q100 qualified microcontrollers. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from relay coils or motor drives. IC Role / Device Role / Timing Role: Front-end transient suppressor on isolated 24 V DC inputs, paired with optocoupler or digital isolator. Use Value: Absorbs up to 400 W surge energy while maintaining <1 µA leakage at 64.1 V, ensuring clean logic-level detection under normal operation. |
| Telecom Line Interface | Consumer Power Adapter Feedback Path |
Use Scenario: Shielding Ethernet PHY magnetics or RS-485 transceivers from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Differential-mode TVS across twisted-pair lines, referenced to local ground plane. Use Value: Clamps common-mode transients within 1 ns, preserving signal integrity up to 100 Mbps while meeting IEC 61000-4-5 Level 3 (2 kV) |
Use Scenario: Securing optocoupler feedback path in isolated AC/DC adapters against primary-side switching noise coupling. IC Role / Device Role / Timing Role: Low-capacitance (typ. 50 pF at 0 V) bidirectional clamp across secondary-side error amplifier inputs. Use Value: Prevents false regulation tripping during 100 ns EFT bursts while adding <0.1% gain error due to leakage <1 µA at 64.1 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Higher PPPM = 600 W, larger SMB (DO-214AA) package, RθJA = 100 °C/W | Better suited for higher-energy surges but requires 30% more PCB area | Select when system-level surge tests exceed 400 W or when thermal margin is constrained |
| 1.5KE75CA | Through-hole TO-218 package, PPPM = 1500 W, VC = 121 V, slower response due to lead inductance | Used in legacy power supply designs where manual assembly or high-reliability mechanical mounting is required | Choose only for through-hole prototyping or repair scenarios where SMT is not feasible |
Compared with SMBJ75CA and 1.5KE75CA, the P4SMA75CAHE3/5A offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W surge capability - making it preferred for space-constrained automotive and industrial modules where automated assembly and automotive-grade reliability are mandatory.
Availability
P4SMA75CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface circuits requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA75CAHE3/5A 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, MOSFETs, and passive components with emphasis on high-reliability and automotive-grade solutions.
The P4SMA75CAHE3/5A belongs to the P4SMA series of surface-mount TRANSZORB® TVS diodes, engineered specifically for robust transient suppression in automotive, industrial, and communications equipment where AEC-Q101 compliance and compact packaging are critical.
FAQ
What does the "CA" suffix indicate in P4SMA75CAHE3/5A?
The "CA" suffix denotes a bidirectional configuration - meaning the P4SMA75CAHE3/5A clamps voltage transients in both polarities symmetrically. Unlike unidirectional variants (e.g., P4SMA75A), it has no cathode band marking and is used where AC signals, differential lines, or unknown polarity surges require protection without polarity constraints. This is confirmed in Vishay's P4SMA datasheet revision 09-Jan-2024, section "DEVICES FOR BIDIRECTION APPLICATIONS".
Is P4SMA75CAHE3/5A qualified for automotive use?
Yes, P4SMA75CAHE3/5A is AEC-Q101 qualified, as indicated by the "HE3" suffix per Vishay's ordering nomenclature. The datasheet explicitly states "AEC-Q101 qualified available – Automotive ordering code: P/NHE3 or P/NHM3", and the device is rated for operation from -65 °C to +150 °C junction temperature - satisfying automotive under-hood and control module environmental requirements.
What is the clamping voltage of P4SMA75CAHE3/5A at its rated peak pulse current?
The clamping voltage (VC) of P4SMA75CAHE3/5A is 104 V at 3.9 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is specified in the Electrical Characteristics table on page 2 of the Vishay P4SMA datasheet (Doc. #88367), and defines the maximum voltage imposed on the protected circuit during a defined surge event.
How does the "/5A" in P4SMA75CAHE3/5A affect packaging and ordering?
The "/5A" suffix indicates a 13-inch diameter plastic tape-and-reel delivery format containing 7500 units per reel, per Vishay's Ordering Information table. This contrasts with "/61", which denotes a 7-inch reel with 1800 units. The "/5A" variant supports high-volume SMT production lines requiring extended reel life and reduced changeover frequency, while maintaining identical electrical and mechanical specifications as other P4SMA75CAHE3 variants.
What is the thermal resistance of P4SMA75CAHE3/5A, and how does it impact PCB layout?
The P4SMA75CAHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W, measured on standard 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value means that for every watt of steady-state power dissipated, the junction temperature rises 120 °C above ambient - so at its 3.3 W rated power, ΔT ≈ 396 °C unless additional copper area or thermal vias are added. Layout must therefore include generous thermal pads and optional thermal vias to meet the +150 °C TJ limit.
P4SMA75CAHE3/5A 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:
- -
- 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)
P4SMA75CAHE3/5A FAQ
1.How can I place an order for P4SMA75CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA75CAHE3/5A 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 P4SMA75CAHE3/5A reliable?
The price and inventory of P4SMA75CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA75CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA75CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA75CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA75CAHE3/5A?
P4SMA75CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA75CAHE3/5A 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 P4SMA75CAHE3/5A?
For technical support, including P4SMA75CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA75CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA75CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA75CAHE3/5A 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 P4SMA75CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA75CAHE3/5A?
All P4SMA75CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA75CAHE3/5A, 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 P4SMA75CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA75CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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