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Vishay General Semiconductor - Diodes Division P4SMA47CA-M3/5A
- Part No.:
- P4SMA47CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA47CA-M3/5A.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,472
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Product details
Overview
P4SMA47CA-M3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 47 V breakdown voltage (VBR = 44.7–49.4 V at IT = 1.0 mA), 64.8 V maximum clamping voltage (VC) at 6.2 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform). It protects signal lines and ICs in automotive sensor interfaces and industrial control inputs against ESD and inductive switching transients.
For engineers reviewing the P4SMA47CA-M3/5A datasheet, P4SMA47CA-M3/5A pinout, P4SMA47CA-M3/5A application, or P4SMA47CA-M3/5A equivalent, key selection criteria include bidirectional clamping symmetry, low leakage (<1.0 µA at VWM = 40.2 V), AEC-Q101 qualification (via HM3 suffix), halogen-free RoHS compliance, and thermal resistance (RθJA = 120 °C/W) under standard PCB pad layout.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical avalanche behavior in both directions due to its bidirectional construction-no polarity marking required. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the DO-214AC package supports automated placement and meets UL 94 V-0 flammability rating.
The P4SMA47CA-M3/5A delivers 400 W peak pulse power at TA = 25 °C (derated above 25 °C per Fig. 2), with 300 W capability above 91 V. It features low incremental surge resistance and clamps transients to ≤64.8 V at 6.2 A, enabling robust protection of 3.3 V/5 V/12 V logic interfaces without overstressing downstream components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA - defines precise avalanche onset threshold for reliable clamping initiation |
| VWM | 40.2 V - maximum continuous reverse working voltage; ensures no conduction during normal operation |
| VC @ IPPM | 64.8 V at 6.2 A - clamping voltage under 10/1000 µs surge; determines protected circuit's maximum transient stress |
| IPPM | 6.2 A - peak pulse current handling capacity; sets minimum surge energy survivability (400 W) |
| Leakage (ID) | <1.0 µA at VWM - negligible standby current; avoids signal integrity degradation in high-impedance nodes |
| Package | SMA (DO-214AC) - industry-standard SMD outline; 0.208" × 0.157" footprint compatible with IPC-7351B land patterns |
| Qualification | AEC-Q101 qualified (HM3 suffix), MSL Level 1, JESD201 Class 2 whisker resistant - suitable for automotive ECUs and harsh-environment industrial use |
Pinout & Package
SMA (DO-214AC) package: surface-mount, two-terminal, bidirectional configuration with no polarity marking. Cathode/anode terminals are functionally symmetric; device mounts with either end toward circuit ground or signal line.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current from either direction; connects to protected line or ground reference |
| Cathode | Transient current exit (bidirectional) | Completes low-impedance path to reference plane; identical electrical role to Anode in CA devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both polarities - eliminates orientation concerns during placement and simplifies layout |
| 400 W peak pulse power | Withstands 10/1000 µs surges up to 6.2 A - exceeds IEC 61000-4-5 Level 4 (4 kV) requirements when properly decoupled |
| Glass-passivated junction | Stable VBR tolerance (±5%) and low temperature coefficient (0.101 %/°C) - ensures consistent clamping across -65 °C to +150 °C |
| Halogen-free & RoHS | M3 suffix denotes compliant materials and matte tin plating - satisfies automotive OEM environmental mandates and solderability standards (J-STD-002) |
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TC, and UHAST - approved for engine control, ADAS sensors, and body electronics |
Applications
| Automotive Sensor Interface | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and chassis ground to clamp transients before they reach the transceiver input stage. Use Value: Limits induced voltage to ≤64.8 V, preventing latch-up or damage to 5 V tolerant receivers while maintaining signal fidelity during normal operation. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring surges and relay contact bounce. IC Role / Device Role / Timing Role: Parallel-connected TVS on each input channel, referenced to common ground, absorbing repetitive 400 W transients without degradation. Use Value: Enables >100,000 surge cycles with <10% VC drift, extending module service life in factory automation environments. |
| Telecom Line Interface | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485/RS-232 data lines in base station backhaul equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair, coordinated with secondary GDT or polymer PTC for staged protection. Use Value: Clamps common-mode transients to safe levels within <1 ns, preserving bit error rate (BER) during 10/1000 µs events up to 4 kV. |
Use Scenario: Adding robustness to USB 2.0 data lines (D+/D−) in smart home hubs against human-body-model (HBM) ESD up to ±15 kV. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed directly at connector, minimizing stub length to preserve 480 Mbps signal integrity. Use Value: Delivers <0.5 pF typical junction capacitance at VWM, avoiding signal rise-time degradation while passing IEC 61000-4-2 Level 4 testing. |
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/VC specs but SMB (DO-214AA) package - 20% larger footprint, higher RθJA (100 °C/W), lower IPPM (5.9 A) | Preferred where board space allows and higher surge margin is needed; not drop-in due to different pad layout | Select SMBJ47CA only if thermal derating headroom is required beyond P4SMA47CA-M3/5A's 400 W rating at elevated ambient. |
| 1.5SMC47CA | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VBR/VC - requires 3× PCB area and has slower response due to junction capacitance | Used in primary AC/DC front-end protection; overqualified for signal-line roles where size and speed matter | Choose 1.5SMC47CA only for high-energy surge zones (e.g., power supply inputs); avoid for data lines due to excessive capacitance and layout impact. |
Compared with SMBJ47CA and 1.5SMC47CA, the P4SMA47CA-M3/5A offers optimal balance of compact DO-214AC footprint, AEC-Q101 qualification, and 400 W surge capability-making it the preferred choice for space-constrained, automotive-grade signal-line protection where fast response and low leakage are critical.
Availability
P4SMA47CA-M3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC input protection, and telecom line interface designs requiring stable component supply, halogen-free compliance, and AEC-Q101 reliability assurance.
Supply support for P4SMA47CA-M3/5A 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 is designed for high-reliability transient suppression in automotive, industrial, and communications systems-delivering consistent clamping performance, AEC-Q101 validation, and surface-mount scalability across voltage grades.
FAQ
What is the breakdown voltage range of the P4SMA47CA-M3/5A?
The P4SMA47CA-M3/5A has a specified breakdown voltage (VBR) range of 44.7 V to 49.4 V at test current IT = 1.0 mA. This tight tolerance ensures predictable clamping onset across production lots and operating temperatures, supporting robust design margins for 48 V nominal systems and 24 V industrial buses.
Is the P4SMA47CA-M3/5A suitable for automotive applications?
Yes, the P4SMA47CA-M3/5A is AEC-Q101 qualified (denoted by the HM3 suffix), making it suitable for automotive applications including engine control units, ADAS sensor interfaces, and body electronics. Its halogen-free, RoHS-compliant construction and MSL Level 1 rating further support reflow compatibility and long-term reliability in vehicle environments.
What does the "CA" suffix indicate in P4SMA47CA-M3/5A?
The "CA" suffix in P4SMA47CA-M3/5A identifies it as a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., P4SMA47A), the CA version provides symmetrical clamping in both polarities-eliminating cathode band marking and enabling flexible PCB placement without orientation constraints.
What is the maximum clamping voltage of the P4SMA47CA-M3/5A under surge conditions?
The P4SMA47CA-M3/5A exhibits a maximum clamping voltage (VC) of 64.8 V at peak pulse current IPPM = 6.2 A using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the P4SMA47CA-M3/5A differ from the P4SMA47A variant?
The P4SMA47CA-M3/5A is bidirectional with symmetrical electrical characteristics in both directions, while the P4SMA47A is unidirectional and features a cathode band for polarity-sensitive placement. The CA version has identical VBR, VC, and IPPM values regardless of voltage polarity, whereas the A variant conducts only in reverse bias and requires correct orientation relative to ground.
P4SMA47CA-M3/5A 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA47CA-M3/5A FAQ
1.How can I place an order for P4SMA47CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA47CA-M3/5A 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 P4SMA47CA-M3/5A reliable?
The price and inventory of P4SMA47CA-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA47CA-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA47CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA47CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA47CA-M3/5A?
P4SMA47CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA47CA-M3/5A 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 P4SMA47CA-M3/5A?
For technical support, including P4SMA47CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA47CA-M3/5A requirements.
6.How does Aetrix verify that P4SMA47CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA47CA-M3/5A 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 P4SMA47CA-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA47CA-M3/5A?
All P4SMA47CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA47CA-M3/5A, 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 P4SMA47CA-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA47CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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