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Vishay General Semiconductor - Diodes Division P4SMA56CAHM3_A/I
- Part No.:
- P4SMA56CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA56CAHM3_A/I.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,361
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Product details
Overview
P4SMA56CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 56 V breakdown voltage (VBR = 53.2–58.8 V at 1 mA), 400 W peak pulse power (10/1000 µs), and clamping voltage of 77.0 V at 5.2 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 P4SMA56CAHM3_A/I datasheet, P4SMA56CAHM3_A/I pinout, P4SMA56CAHM3_A/I application, or P4SMA56CAHM3_A/I equivalent, this device delivers AEC-Q101 qualification, halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and verified clamping performance under repetitive 10/1000 µs surge conditions - critical for automotive-grade transient protection design validation.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VWM = 47.8 V, VBR min/max = 53.2/58.8 V, and IPPM = 5.2 A at TA = 25 °C. Its low incremental surge resistance ensures stable clamping during fast transients, while the glass-passivated junction enables reliable operation up to TJ = 150 °C.
No polarity marking is present on the device body, confirming its bidirectional construction. Thermal resistance is RθJA = 120 °C/W (on 0.2" × 0.2" copper pads), and it meets UL 94 V-0 flammability requirements with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1 mA - defines precise breakdown threshold for bidirectional clamping activation |
| 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 400 W 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - peak pulse power handling per 10/1000 µs waveform, derated above 25 °C |
| IFSM | Not applicable - bidirectional device has no forward surge rating (unidirectional only) |
| TJ max. | 150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 5.0 mm × 5.0 mm thermal pad footprint |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity surge) | Accepts reverse surge current during negative-going transients; connects to protected line |
| Cathode | Transient current entry (positive polarity surge) | Accepts reverse surge current during positive-going transients; connects to protected line |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for EU and global automotive supply chains |
| 400 W peak pulse power (10/1000 µs) | Withstands high-energy surges common in 12 V/24 V vehicle systems without degradation |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without preconditioning |
| Glass-passivated junction | Ensures long-term stability and low leakage (<1 µA at VWM) over temperature and life cycle |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in passenger vehicles. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector or IC input pins to shunt transients before they reach sensitive circuitry. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 1/2/5a/b stress while meeting AEC-Q101 reliability requirements. |
Use Scenario: Safeguarding digital input/output channels on programmable logic controller (PLC) modules exposed to relay coil kickback and field wiring surges. IC Role / Device Role / Timing Role: Fast-response transient suppressor installed between field-side terminals and isolation barrier or microcontroller GPIO. Use Value: Limits clamped voltage to ≤77 V, preventing latch-up or damage to 3.3 V/5 V logic-level interface components. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHYs, DSL line drivers, and PoE injectors from lightning-induced surges and AC line coupling in outdoor telecom equipment. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair or DC bias rail, coordinated with gas discharge tubes or MOVs in multi-stage protection schemes. Use Value: Sub-100 ns response time and 77 V clamping enable compliance with ITU-T K.20/K.21 immunity standards. |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home devices, preventing damage from capacitor discharge or regulator fault events. IC Role / Device Role / Timing Role: Standoff-rated protector placed after primary-side isolation, guarding LDOs, USB-PD controllers, and battery management ICs. Use Value: 47.8 V working voltage allows safe operation across 36–42 V nominal DC outputs while clamping faults below 80 V. |
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 | 600 W PPPM, SMB package (larger footprint), VC = 93.6 V at 6.4 A | Higher power handling but larger board area; less suitable for space-constrained automotive modules | Select when higher surge margin is required and PCB layout permits SMB footprint |
| 1.5SMC58CA | 1500 W PPPM, SMC package (DO-214AB), VC = 93.6 V at 16.1 A | Designed for primary-side AC line or bulk DC rail protection; not optimized for signal-line placement | Choose for front-end protection stages where higher energy absorption is needed and thermal mass supports larger package |
Compared with SMBJ58CA and 1.5SMC58CA, the P4SMA56CAHM3_A/I offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and precise 47.8 V standoff - making it preferred for secondary-side, signal-integrity-critical automotive and industrial edge nodes where board space and qualification rigor are prioritized over raw power rating.
Availability
P4SMA56CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface designs requiring stable component supply, halogen-free compliance, and AEC-Q101 traceability.
Supply support for P4SMA56CAHM3_A/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The P4SMA Series targets cost-sensitive yet robust transient protection needs in automotive, industrial, and telecom applications - delivering standardized TVS performance in compact surface-mount packages with rigorous qualification and consistent manufacturing control.
FAQ
What is the clamping voltage of P4SMA56CAHM3_A/I at its rated peak pulse current?
The P4SMA56CAHM3_A/I exhibits a maximum clamping voltage (VC) of 77.0 V when subjected to its rated peak pulse current (IPPM) of 5.2 A under the standard 10/1000 µs waveform. This value is measured at TA = 25 °C with device mounted on 0.2" × 0.2" copper pads, and represents the upper voltage limit imposed on protected circuitry during surge events. The P4SMA56CAHM3_A/I maintains this clamping performance consistently across its bidirectional operation.
Is P4SMA56CAHM3_A/I qualified for automotive applications?
Yes, the P4SMA56CAHM3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation revision dated 09-Jan-2024. It is specifically intended for automotive use cases including engine control units, ADAS sensor interfaces, and infotainment power rails. The device meets stress test requirements for temperature cycling, humidity, mechanical shock, and surge immunity defined in AEC-Q101, and carries halogen-free, RoHS-compliant materials certification.
What does the "CA" suffix indicate in P4SMA56CAHM3_A/I?
The "CA" suffix in P4SMA56CAHM3_A/I denotes a bidirectional Transient Voltage Suppressor configuration. Unlike unidirectional variants (e.g., P4SMA56A), the CA version provides symmetrical clamping behavior for both positive and negative polarity transients, with identical VBR, VWM, and VC specifications in either direction. No polarity marking is present on the SMA package, reflecting its bidirectional functionality - a key distinction used in differential line protection and AC-coupled signal paths.
What is the maximum operating junction temperature for P4SMA56CAHM3_A/I?
The P4SMA56CAHM3_A/I has a maximum operating junction temperature (TJ) of +150 °C, as specified in Vishay's P4SMA Series datasheet (Document Number: 88367). This rating enables reliable operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. Derating of peak pulse power begins above TA = 25 °C per Figure 2 in the datasheet, and thermal design must account for RθJA = 120 °C/W on standard 0.2" × 0.2" copper pads.
Does P4SMA56CAHM3_A/I require special handling during PCB assembly?
No special handling is required beyond standard SMT practices: the P4SMA56CAHM3_A/I is rated MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 for solderability, and whisker resistance meets JESD 201 Class 2. The device may be placed directly onto PCBs without baking or dry-packaging - provided storage conditions remain within manufacturer-specified humidity limits prior to assembly.
P4SMA56CAHM3_A/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:
- Active
- 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_A/I FAQ
1.How can I place an order for P4SMA56CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA56CAHM3_A/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_A/I reliable?
The price and inventory of P4SMA56CAHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA56CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA56CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA56CAHM3_A/I?
P4SMA56CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA56CAHM3_A/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_A/I?
For technical support, including P4SMA56CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA56CAHM3_A/I requirements.
6.How does Aetrix verify that P4SMA56CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA56CAHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA56CAHM3_A/I?
All P4SMA56CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA56CAHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for P4SMA56CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA56CAHM3_A/I Tags
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