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Vishay General Semiconductor - Diodes Division P4SMA56CAHM3/I
- Part No.:
- P4SMA56CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA56CAHM3/I.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,331
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Product details
Overview
P4SMA56CAHM3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping ESD and surge transients on signal/power lines. It features a 56 V breakdown voltage (VBR min/max = 53.2–58.8 V at 1 mA), 47.8 V standoff voltage (VWM), 77.0 V maximum clamping voltage (VC) at 5.2 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFET gates, sensor interfaces, and industrial I/O circuits.
For engineers reviewing the P4SMA56CAHM3/I datasheet, P4SMA56CAHM3/I pinout, P4SMA56CAHM3/I application, or P4SMA56CAHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), junction temperature range (−65 to +150 °C), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
The P4SMA56CAHM3/I operates as a bidirectional avalanche diode, symmetrically clamping voltage surges above ±53.2 V in either polarity without polarity marking. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for protecting sensitive analog inputs and digital logic against IEC 61000-4-2/4-4/4-5 events.
Rated for 400 W peak pulse power (derated to 300 W above 91 V), it delivers 5.2 A IPPM at 77.0 V VC under 10/1000 µs waveform when mounted on 5.0 mm × 5.0 mm copper pads. Thermal performance is defined by RθJA = 120 °C/W and RθJL = 30 °C/W, supporting operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at IT = 1 mA - defines precise avalanche onset threshold for bidirectional clamping |
| VWM | 47.8 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 77.0 V at 5.2 A - clamped voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 400 W - peak pulse power handling capability, enabling robust protection against lightning-induced transients |
| IPPM | 5.2 A - peak pulse current supported at rated clamping voltage, validated per Fig. 3 waveform |
| TJ Range | −65 °C to +150 °C - wide operating junction temperature range suitable for automotive under-hood and industrial environments |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, guiding PCB copper pad sizing for thermal management |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified (HM3 suffix), matte tin-plated leads solderable per J-STD-002 and JESD22-B102. No polarity marking - bidirectional device.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (negative polarity surge) | Accepts reverse surge current during negative half-cycle; symmetric with cathode for bidirectional operation |
| Cathode | Transient current entry point (positive polarity surge) | Accepts reverse surge current during positive half-cycle; electrically identical to anode in bidirectional configuration |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| 400 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in industrial motor drives and telecom line cards |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices |
| MSL Level 1 (260 °C peak reflow) | Enables standard SMT assembly without moisture sensitivity concerns or baking requirements |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance mandates for global electronics manufacturing and end-of-life recycling |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and feedback signal lines against inductive kickback from 24 V DC solenoids and relay coils. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across isolated signal paths and low-side switch outputs. Use Value: Limits transient voltage to ≤77.0 V, preventing latch-up or oxide damage in 3.3 V/5 V microcontrollers and gate drivers. |
Use Scenario: ESD and load-dump protection for CAN/LIN bus transceivers and MEMS pressure/temperature sensors in engine compartments. IC Role / Device Role / Timing Role: Primary front-end surge suppressor on differential bus lines and analog sensor supply rails. Use Value: AEC-Q101 qualification ensures reliability under −40 °C to +125 °C ambient and repeated 10/1000 µs surge events. |
| Telecom Power Feeds | Consumer USB-C Port Protection |
Use Scenario: Overvoltage suppression on 48 V PoE injectors and remote PHY power feeds exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS after primary GDT or MOV, providing fast-response clamping before DC-DC converters. Use Value: 400 W rating handles multiple 10/1000 µs surges without degradation, maintaining VWM = 47.8 V during normal operation. |
Use Scenario: IEC 61000-4-2 ESD protection for USB-C CC, SBU, and VBUS lines in portable audio/video devices. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp integrated into Type-C connector subassembly. Use Value: Symmetric clamping avoids polarity dependency, simplifying layout and eliminating orientation errors during assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA | Higher package thermal mass (SMB/DO-214AA); VBR = 64.4–71.4 V; VC = 93.6 V @ 6.4 A; 600 W rating | Better suited for higher-energy surges where board space allows larger footprint | Select SMBJ58CA when >400 W pulse power margin is required and PCB layout accommodates 2.54 mm lead pitch |
| 1.5KE56CA | Through-hole (DO-201AD); VBR = 53.2–58.8 V; VC = 77.0 V @ 19.4 A; 1500 W rating | Designed for legacy through-hole designs and high-reliability power supply inputs | Choose 1.5KE56CA only for through-hole prototyping or repair of existing DO-201AD-based systems |
Compared with P4SMA56CAHM3/I, SMBJ58CA offers higher pulse power but requires larger PCB area and has higher clamping voltage, while 1.5KE56CA provides superior surge handling in through-hole form but lacks AEC-Q101 qualification and surface-mount compatibility.
Availability
P4SMA56CAHM3/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power feeds, and consumer USB-C port protection requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P4SMA56CAHM3/I 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and consumer electronics - delivering standardized SMA-packaged TVS diodes with AEC-Q101 qualification and tight parametric control.
FAQ
What is the clamping voltage of P4SMA56CAHM3/I at its rated peak pulse current?
The P4SMA56CAHM3/I has a maximum clamping voltage (VC) of 77.0 V at 5.2 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 defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA56CAHM3/I maintains this clamping performance across its full operating temperature range.
Is P4SMA56CAHM3/I qualified for automotive applications?
Yes, P4SMA56CAHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix - denoting halogen-free, RoHS-compliant construction with whisker-resistant matte tin plating and validation per automotive stress testing requirements. It is approved for use in engine control modules, body electronics, and ADAS sensor units where reliability under thermal cycling, humidity, and mechanical shock is mandatory. The P4SMA56CAHM3/I meets JESD201 Class 2 whisker test and MSL Level 1 reflow profile.
What does the "CA" suffix mean in P4SMA56CAHM3/I?
The "CA" suffix in P4SMA56CAHM3/I designates a bidirectional transient voltage suppressor configuration - meaning the device provides symmetrical clamping for both positive and negative polarity transients without polarity marking. Unlike unidirectional variants (e.g., P4SMA56A), the CA version has no cathode band and functions identically in either orientation. This makes P4SMA56CAHM3/I ideal for differential signal lines, AC-coupled interfaces, and applications where polarity cannot be guaranteed during assembly or field service.
What is the standoff voltage (VWM) of P4SMA56CAHM3/I and why does it matter?
The standoff voltage (VWM) of P4SMA56CAHM3/I is 47.8 V - the maximum continuous reverse voltage the device can withstand without exceeding 1 µA leakage current. This parameter ensures the P4SMA56CAHM3/I remains non-conductive during normal system operation, avoiding power loss or false triggering while still responding instantly to transients exceeding this threshold. It is selected to provide ≥15 % margin below the 56 V nominal breakdown voltage, balancing protection sensitivity and operational stability.
How does the thermal resistance of P4SMA56CAHM3/I affect PCB layout?
The P4SMA56CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W, which means each watt of dissipated power raises the junction temperature by 120 °C above ambient - assuming standard mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads. To maintain TJ ≤ 150 °C under worst-case surge conditions, PCB layout must provide adequate copper area and minimize thermal bottlenecks. The P4SMA56CAHM3/I's RθJL = 30 °C/W further emphasizes the importance of short, wide traces to internal ground planes for effective heat conduction away from the SMA package.
P4SMA56CAHM3/I 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):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 5.2A
- 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)
P4SMA56CAHM3/I FAQ
1.How can I place an order for P4SMA56CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA56CAHM3/I 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 P4SMA56CAHM3/I reliable?
The price and inventory of P4SMA56CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA56CAHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA56CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA56CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA56CAHM3/I?
P4SMA56CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA56CAHM3/I 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 P4SMA56CAHM3/I?
For technical support, including P4SMA56CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA56CAHM3/I requirements.
6.How does Aetrix verify that P4SMA56CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA56CAHM3/I 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 P4SMA56CAHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA56CAHM3/I?
All P4SMA56CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA56CAHM3/I, 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 P4SMA56CAHM3/I part is unused and in its original packaging.
Return procedure for P4SMA56CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA56CAHM3/I Tags
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