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Vishay General Semiconductor - Diodes Division P4SMA47CAHM3_A/H
- Part No.:
- P4SMA47CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA47CAHM3_A/H.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,889
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Product details
Overview
P4SMA47CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor (TVS) in SMA (DO-214AC) package, rated for 47 V breakdown voltage (VBR = 44.7–49.4 V at 1 mA), 400 W peak pulse power (10/1000 µs), and clamping voltage of 64.8 V at 6.2 A. It protects signal lines and power rails in automotive sensor interfaces, industrial I/O modules, and telecom line cards against ESD and inductive switching transients.
For engineers reviewing the P4SMA47CAHM3_A/H datasheet, P4SMA47CAHM3_A/H pinout, P4SMA47CAHM3_A/H application, or P4SMA47CAHM3_A/H equivalent, this device serves as an AEC-Q101-qualified, halogen-free, RoHS-compliant TVS diode optimized for bidirectional surge suppression in space-constrained PCB layouts requiring MSL Level 1 handling and 260 °C reflow compatibility.
Technical Context
The P4SMA47CAHM3_A/H operates as a symmetrical avalanche diode with identical forward and reverse clamping behavior, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at 40.2 V).
Designed for transient immunity per IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and ISO 7637-2 (automotive load dump), it delivers sub-nanosecond response time and low dynamic impedance (ZPP ≈ 10.5 Ω), maintaining clamping performance under repetitive 0.01% duty-cycle surges up to 400 W (derated above 91 V to 300 W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1 mA - defines precise avalanche onset threshold for reliable overvoltage triggering |
| VWM | 40.2 V - maximum continuous working voltage before leakage exceeds 1 µA; sets safe operating margin below VBR |
| VC @ IPPM | 64.8 V at 6.2 A - clamping voltage during 10/1000 µs surge; determines protected circuit's peak stress level |
| PPPM | 400 W - peak pulse power handling capability; supports robust protection against high-energy transients |
| IPPM | 6.2 A - maximum non-repetitive peak pulse current; defines surge current limit before thermal failure |
| TJmax | +150 °C - maximum junction temperature; enables operation in under-hood automotive and industrial environments |
| Package | SMA (DO-214AC) - standardized surface-mount outline with 5.0 mm × 5.0 mm copper pad footprint for optimal thermal dissipation |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, compatible with J-STD-002 solderability and JESD 22-B102 whisker testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node for bidirectional conduction path | Connected to protected line or ground reference; no polarity marking on bidirectional devices |
| Cathode | Current exit terminal in forward bias; symmetrical with Anode in bidirectional operation | Electrically identical to Anode; device functions identically regardless of orientation on PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JEDEC standards |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for EU, China, and global electronics manufacturing |
| 400 W peak pulse power (10/1000 µs) | Supports protection against severe transients such as ISO 7637-2 Pulse 1/2a/5a in 12 V vehicle systems |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage exposure to downstream ICs while maintaining fast response and low dynamic impedance |
| MSL Level 1, 260 °C peak reflow | Enables standard SMT assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and jump-start transients in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to shunt surge energy to ground. Use Value: Prevents latch-up or permanent damage to transceiver ICs by limiting peak voltage to ≤64.8 V during 400 W transients. |
Use Scenario: Safeguarding analog input channels (4–20 mA, 0–10 V) in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff protector mounted at connector entry point to absorb induced lightning or inductive kick energy. Use Value: Maintains signal integrity by clamping transients within 1 ns, with <1 µA leakage at 40.2 V ensuring minimal measurement error. |
| Telecom Line Card Protection | Consumer USB-C Port ESD Guard |
|
Use Scenario: Shielding Ethernet PHYs and PoE injectors from ESD events and AC-line coupled noise in network edge equipment. IC Role / Device Role / Timing Role: Primary-level TVS on RJ45 magnetics secondary side, coordinated with secondary GDT or MOV. Use Value: Delivers 15 kV contact / 20 kV air IEC 61000-4-2 ESD immunity without degrading 100 MHz signal bandwidth due to low junction capacitance (~100 pF at VWM). |
Use Scenario: Providing secondary-side ESD protection on USB-C CC and VBUS lines in portable docking stations. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp placed after EMI filter to protect USB PD controller and port switch. Use Value: Halogen-free construction meets consumer safety standards; 64.8 V clamping prevents overvoltage damage to 20 V-rated PD controllers during hot-plug events. |
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 | Higher package thermal resistance (RθJA = 140 °C/W vs. 120 °C/W); same VBR, VC, and PPPM | Suitable for lower-power or less thermally constrained designs; larger SMB (DO-214AA) footprint requires PCB redesign | Select when board layout allows larger pad area and higher standoff voltage margin is needed (VWM = 40.2 V same) |
| 1.5SMC47CA | Higher PPPM (1500 W) but larger SMC (DO-214AB) package; VBR range identical, VC = 64.8 V at 23.3 A | Used where higher surge endurance is required (e.g., outdoor telecom enclosures), not space-constrained consumer boards | Choose only if system-level surge test levels exceed 400 W and PCB real estate permits 7.1 mm × 6.2 mm footprint |
Compared with SMBJ47CA and 1.5SMC47CA, the P4SMA47CAHM3_A/H offers the smallest footprint (SMA), lowest thermal resistance among 400 W-class bidirectional TVS diodes, and AEC-Q101/halogen-free compliance-making it optimal for automotive and high-density industrial PCBs where size, reliability, and regulatory alignment are critical.
Availability
P4SMA47CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, and telecom line-card surge suppression requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P4SMA47CAHM3_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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA series targets high-volume, cost-sensitive protection applications across automotive, industrial, and communications markets, delivering standardized TVS performance in compact, qualified packages with consistent parametric distribution.
FAQ
What is the breakdown voltage tolerance for P4SMA47CAHM3_A/H?
The P4SMA47CAHM3_A/H has a breakdown voltage VBR specified from 44.7 V to 49.4 V at 1 mA test current, representing a ±5% tolerance around the nominal 47 V rating. This tight distribution ensures predictable clamping onset across production lots and supports robust design margins in automotive and industrial systems where overvoltage thresholds must be tightly controlled.
Is P4SMA47CAHM3_A/H suitable for automotive applications?
Yes, P4SMA47CAHM3_A/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials. Its MSL Level 1 rating, 150 °C maximum junction temperature, and validation across temperature cycling, HTRB, and ESD stress make it appropriate for under-hood and cabin electronics-including body control modules, ADAS sensor interfaces, and infotainment power supplies-where reliability under harsh conditions is mandatory.
How does the bidirectional configuration of P4SMA47CAHM3_A/H affect its use in circuit design?
The bidirectional configuration of P4SMA47CAHM3_A/H means it provides symmetrical clamping in both polarities, eliminating the need for polarity-aware placement on PCBs. This simplifies layout for AC-coupled signals, differential buses (e.g., CAN, RS-485), or ungrounded power rails. Unlike unidirectional TVS diodes, P4SMA47CAHM3_A/H has no cathode band marking and functions identically regardless of orientation between two nodes.
What is the maximum clamping voltage of P4SMA47CAHM3_A/H under surge conditions?
The maximum clamping voltage VC of P4SMA47CAHM3_A/H is 64.8 V at 6.2 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value represents the upper bound of voltage seen by protected circuitry during worst-case transient events and is critical for ensuring downstream components-such as 75 V-rated transceivers or 60 V MOSFETs-remain within safe operating limits when P4SMA47CAHM3_A/H is deployed.
Does P4SMA47CAHM3_A/H require special PCB layout considerations?
Yes, P4SMA47CAHM3_A/H should be mounted using the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 400 W pulse power dissipation. Short, low-inductance traces to ground or return paths are essential to minimize voltage overshoot during fast transients. Avoid thermal relief on pads, and ensure solder mask clearance matches the SMA (DO-214AC) outline to prevent solder bridging or tombstoning during reflow.
P4SMA47CAHM3_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):
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA47CAHM3_A/H FAQ
1.How can I place an order for P4SMA47CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA47CAHM3_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 P4SMA47CAHM3_A/H reliable?
The price and inventory of P4SMA47CAHM3_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 P4SMA47CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA47CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA47CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA47CAHM3_A/H?
P4SMA47CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA47CAHM3_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 P4SMA47CAHM3_A/H?
For technical support, including P4SMA47CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA47CAHM3_A/H requirements.
6.How does Aetrix verify that P4SMA47CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA47CAHM3_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 P4SMA47CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA47CAHM3_A/H?
All P4SMA47CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA47CAHM3_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 P4SMA47CAHM3_A/H part is unused and in its original packaging.
Return procedure for P4SMA47CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA47CAHM3_A/H Tags
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