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Vishay General Semiconductor - Diodes Division P4SMA47CAHE3/5A
- Part No.:
- P4SMA47CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA47CAHE3/5A.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,135
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Product details
Overview
P4SMA47CAHE3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 47 V breakdown voltage (VBR = 44.7–49.4 V at 1 mA), 40.2 V standoff voltage (VWM), 64.8 V maximum clamping voltage (VC) at 6.2 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 systems.
For engineers reviewing the P4SMA47CAHE3/5A datasheet, P4SMA47CAHE3/5A pinout, P4SMA47CAHE3/5A application, or P4SMA47CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, RoHS-compliant construction, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering consistent clamping performance without polarity dependence. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while the low incremental surge resistance enables rapid energy diversion during ESD or inductive switching events.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJA = 120 °C/W) reflects standard surface-mount thermal behavior on minimal pad layout, and it supports repetitive surge duty cycles up to 0.01% at 400 W (300 W above 91 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1 mA - defines reliable conduction onset under transient stress in either direction |
| VWM | 40.2 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 64.8 V at 6.2 A - clamped voltage seen by protected circuit during full 10/1000 µs surge |
| PPPM | 400 W - peak transient power handling capacity, derated above 25 °C ambient |
| IFSM | Not applicable - bidirectional device has no forward surge rating (unidirectional only) |
| TJ max. | 150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, 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. Bidirectional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | One terminal of symmetrical PN junction - accepts surge current regardless of voltage polarity |
| Cathode | Transient current exit (either polarity) | Second terminal of symmetrical PN junction - completes low-impedance path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 400 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive load switching in motor control and power supply rails |
| AEC-Q101 qualified | Validated for automotive electronics including engine control units and ADAS sensor interfaces |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity limitations |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and low leakage under thermal cycling |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., temperature, pressure) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector interface to clamp ±20 kV ESD and ±100 V load dump spikes before they reach signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to precision op-amps and ADC front-ends while maintaining signal integrity below 40.2 V normal operation. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-induced surges in factory automation. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC I/O lines to limit transient overvoltage during relay coil de-energization or cable coupling events. Use Value: Enables >100,000 surge cycles without degradation, supporting 15-year industrial equipment lifetimes with zero maintenance downtime. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY or RS-485 transceivers from lightning-induced surges on outdoor data lines. IC Role / Device Role / Timing Role: First-stage protector ahead of GDT or polymer PTC, absorbing fast-rising transients before secondary suppression engages. Use Value: Clamps sub-100 ns transients to ≤64.8 V within 1.0 ps response time, preserving signal eye diagram integrity for 100 Mbps+ links. |
Use Scenario: Input-stage surge suppression in wall-mounted AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Primary clamping element across bridge rectifier output to prevent overvoltage damage to primary-side controller ICs. Use Value: Withstands repeated 1 kV/500 A ring wave surges per IEC 61000-4-5, meeting UL 1449 Type 3 requirements without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47CA | Same VBR range (44.7–49.4 V), but SMB package (DO-214AA); 600 W PPPM, higher IPPM (10.3 A) | Larger footprint; better suited for higher-power industrial rails where board space allows | Select when higher surge margin is required and PCB layout accommodates 3.5 mm × 4.6 mm body |
| 1.5KE47CA | Through-hole DO-201 package; same VBR/VC, but 1500 W PPPM and 32.4 A IPPM | Requires through-hole assembly; used in legacy designs or high-reliability power supplies | Choose for prototyping, repair, or applications needing manual rework capability and highest surge tolerance |
Compared with SMBJ47CA and 1.5KE47CA, P4SMA47CAHE3/5A offers optimal balance of compact SMT form factor, AEC-Q101 qualification, and 400 W surge capability - making it preferred for space-constrained automotive and modern industrial modules requiring automated manufacturing.
Availability
P4SMA47CAHE3/5A is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, and telecom line interface applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA47CAHE3/5A 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 optimization.
The P4SMA Series targets cost-sensitive yet robust transient suppression needs across automotive, industrial, and communications markets - engineered for high-volume SMT deployment with AEC-Q101 validation and MSL-1 process compatibility.
FAQ
What does the "CA" suffix indicate in P4SMA47CAHE3/5A?
The "CA" suffix denotes a bidirectional configuration: P4SMA47CAHE3/5A contains two opposing avalanche diodes in series, enabling symmetrical clamping for AC signals or floating lines. Unlike unidirectional variants (e.g., P4SMA47A), it has no cathode band marking and conducts equally in both directions above its 44.7–49.4 V breakdown range. This makes P4SMA47CAHE3/5A ideal for protecting differential buses like RS-485 or transformer-coupled interfaces where polarity reversal occurs.
Is P4SMA47CAHE3/5A suitable for automotive applications?
Yes, P4SMA47CAHE3/5A is AEC-Q101 qualified and carries the "HE3" suffix indicating RoHS-compliant, automotive-grade construction. It undergoes stress testing for temperature cycling, highly accelerated life testing (HALT), and ESD per ISO 10605. The device operates from −65 °C to +150 °C and maintains stable clamping performance across this range - confirming its suitability for under-hood engine control units, body electronics, and ADAS sensor modules where P4SMA47CAHE3/5A serves as first-line transient defense.
What is the maximum clamping voltage of P4SMA47CAHE3/5A and how is it measured?
The maximum clamping voltage (VC) of P4SMA47CAHE3/5A is 64.8 V, measured at 6.2 A peak pulse current (IPPM) using a standardized 10/1000 µs double-exponential waveform. This value represents the worst-case voltage imposed on the protected circuit during full-rated surge conditions. It is verified per ANSI/IEEE C62.35 and guarantees that downstream components - such as microcontrollers or transceivers powered from 3.3 V or 5 V rails - remain within safe operating limits when P4SMA47CAHE3/5A is correctly placed near the IC input.
How does the "HE3/5A" packaging designation affect P4SMA47CAHE3/5A ordering and use?
The "HE3/5A" suffix specifies RoHS-compliant, AEC-Q101-qualified construction ("HE3") in a 13-inch diameter plastic tape-and-reel format containing 7500 units ("5A"). This packaging enables high-speed pick-and-place assembly with industry-standard feeders and supports JIT manufacturing. The "5A" reel size reduces changeover frequency versus smaller 7-inch reels (e.g., "/61"), improving throughput in high-volume production lines where P4SMA47CAHE3/5A is deployed across multiple PCB variants in automotive Tier-1 supply chains.
Can P4SMA47CAHE3/5A replace unidirectional TVS diodes in existing designs?
No - P4SMA47CAHE3/5A is strictly bidirectional and cannot substitute for unidirectional TVS diodes (e.g., P4SMA47A) in DC-biased circuits without redesign. In unidirectional applications, the cathode must be tied to the most positive rail to block reverse leakage; P4SMA47CAHE3/5A lacks polarity marking and conducts in both directions. Replacing a unidirectional part with P4SMA47CAHE3/5A risks unintended conduction paths or elevated leakage. Always verify circuit topology before substituting P4SMA47CAHE3/5A into legacy layouts originally designed for asymmetric clamping.
P4SMA47CAHE3/5A 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- 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)
P4SMA47CAHE3/5A FAQ
1.How can I place an order for P4SMA47CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA47CAHE3/5A 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 P4SMA47CAHE3/5A reliable?
The price and inventory of P4SMA47CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA47CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA47CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA47CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA47CAHE3/5A?
P4SMA47CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA47CAHE3/5A 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 P4SMA47CAHE3/5A?
For technical support, including P4SMA47CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA47CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA47CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA47CAHE3/5A 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 P4SMA47CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA47CAHE3/5A?
All P4SMA47CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA47CAHE3/5A, 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 P4SMA47CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA47CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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