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Vishay General Semiconductor - Diodes Division P4SMA56AHM3/I
- Part No.:
- P4SMA56AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA56AHM3/I.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,848
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Product details
Overview
P4SMA56AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 56 V breakdown voltage (VBR = 53.2–58.8 V at IT = 1.0 mA), 47.8 V standoff voltage (VWM), clamps transients to ≤77.0 V at 5.2 A peak pulse current (IPPM), and delivers 400 W peak pulse power (10/1000 µs waveform). It is widely deployed in automotive sensor interfaces and industrial power supply inputs requiring AEC-Q101-qualified surge immunity.
For engineers reviewing the P4SMA56AHM3/I datasheet, P4SMA56AHM3/I pinout, P4SMA56AHM3/I application, or P4SMA56AHM3/I equivalent, key selection criteria include its halogen-free RoHS-compliant SMA (DO-214AC) package, 150 °C maximum junction temperature, low incremental surge resistance, and verified AEC-Q101 qualification for automotive-grade reliability under repetitive transient stress.
Technical Context
The P4SMA56AHM3/I operates as a unidirectional clamping device with a cathode-band polarity marking, leveraging glass-passivated silicon junction technology for stable avalanche behavior. Its thermal resistance (RθJA = 120 °C/W) and RθJL = 30 °C/W enable effective heat dissipation on standard 0.2" × 0.2" copper pads, supporting continuous operation up to 3.3 W power dissipation at TA = 50 °C.
It meets J-STD-020 MSL Level 1 (peak reflow ≤260 °C), passes JESD201 Class 2 whisker testing, and exhibits a VBR temperature coefficient of +0.103 %/°C - ensuring predictable voltage drift across its -65 °C to +150 °C operating range. The device is rated for non-repetitive 40 A forward surge current (IFSM, 8.3 ms half-sine) and maintains <1.0 µA reverse leakage at VWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 53.2–58.8 V at 1.0 mA test current - defines precise avalanche initiation threshold for reliable clamping onset |
| Standoff Voltage VWM | 47.8 V - maximum continuous reverse working voltage before significant leakage begins |
| Clamping Voltage VC | ≤77.0 V at 5.2 A IPPM - actual voltage seen by protected circuit during 10/1000 µs surge |
| Peak Pulse Power PPPM | 400 W (10/1000 µs waveform) - determines maximum transient energy absorption capability |
| Operating Temperature | -65 °C to +150 °C - supports under-hood automotive and wide-temperature industrial environments |
| Qualification | AEC-Q101 qualified (HM3 suffix) - validated for automotive electronics reliability per stress test requirements |
| Package | SMA (DO-214AC) - industry-standard SMD outline enabling automated placement and high-volume assembly |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (forward bias) | Connected to lower-potential side of protected line; enables unidirectional conduction during surge |
| Cathode | Current exit terminal (reverse-biased clamp node) | Connected to higher-potential rail or ground reference; defines clamping polarity and VWM directionality |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against severe lightning-induced surges and inductive switching spikes in 12 V/24 V systems |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for global OEM supply chains without compromising surge performance |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns response time) |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and direct placement into lead-free reflow without baking preconditioning |
Applications
| Automotive Sensor Protection | Industrial Power Supply Input |
|---|---|
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: Unidirectional TVS placed between signal line and ground to clamp positive transients while blocking normal signal swing. Use Value: Maintains signal integrity below 47.8 V standby while limiting surge excursions to ≤77.0 V - preventing damage to 5 V or 3.3 V interface ICs. |
Use Scenario: Safeguarding DC-DC converter inputs in programmable logic controllers (PLCs) and motor drives exposed to 24 V rail surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main input rail, coordinated with upstream fuses and downstream regulators. Use Value: Absorbs 400 W transients without degradation, enabling system-level compliance with IEC 61000-4-5 (Level 3, 2 kV) |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from ESD and induced surges on twisted-pair data lines. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), placed close to PHY IC pins. Use Value: Fast response and low clamping voltage preserve signal eye diagram integrity during 8 kV contact ESD events. |
Use Scenario: Output-side surge suppression in USB-C PD adapters and wall-wart supplies delivering 5–20 V. IC Role / Device Role / Timing Role: Final-stage clamp on regulated output to prevent overvoltage damage to connected devices. Use Value: Halogen-free construction satisfies UL/IEC safety certifications while sustaining repeated 10/1000 µs surges at full rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A | Higher VWM (49.4 V), same VBR range, SMB package (larger footprint, higher IPPM = 6.4 A) | Better suited for higher-current 24 V systems where PCB space allows larger package | Select when needing >5.2 A IPPM headroom or legacy SMB layout compatibility |
| 1.5SMC56A | Same VBR/VWM, but SMC package (DO-214AB), higher PPPM = 1500 W, non-AEC-Q101 | Used in non-automotive industrial equipment requiring higher single-pulse energy handling | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not required and 1500 W rating is needed |
Compared with P4SMA56AHM3/I, SMBJ58A offers higher surge current capacity in a slightly larger package, while 1.5SMC56A provides triple the peak power in a non-automotive-qualified SMC outline - making P4SMA56AHM3/I the optimal choice for space-constrained, AEC-Q101-mandated automotive and industrial SMT designs.
Availability
P4SMA56AHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC power inputs, telecom line protection, and consumer adapter output stages requiring stable component supply with halogen-free, AEC-Q101-qualified surge immunity.
Supply support for P4SMA56AHM3/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 application-specific optimization.
The P4SMA Series is engineered for high-reliability transient suppression in automotive, industrial, and telecom systems - combining compact SMA packaging, AEC-Q101 qualification, and consistent clamping performance across voltage grades.
FAQ
What is the exact breakdown voltage range for P4SMA56AHM3/I?
The P4SMA56AHM3/I has a guaranteed breakdown voltage (VBR) range of 53.2 V to 58.8 V at a test current of 1.0 mA, as specified in the Vishay datasheet (Document Number: 88367, Revision: 09-Jan-2024). This range ensures consistent avalanche triggering across production lots and temperature extremes, critical for repeatable clamping behavior in the P4SMA56AHM3/I.
Is P4SMA56AHM3/I suitable for automotive applications?
Yes, the P4SMA56AHM3/I is AEC-Q101 qualified (denoted by the HM3 suffix), meaning it has passed rigorous stress tests for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock. Its halogen-free, RoHS-compliant construction and -65 °C to +150 °C operating range make it appropriate for under-hood and cabin electronics - a key requirement for the P4SMA56AHM3/I.
What does the "HM3" suffix indicate in P4SMA56AHM3/I?
The "HM3" suffix in P4SMA56AHM3/I signifies halogen-free, RoHS-compliant construction with full AEC-Q101 qualification. It distinguishes this variant from commercial-grade E3/M3 versions and confirms compliance with automotive environmental and reliability standards - a defining specification for the P4SMA56AHM3/I.
What is the maximum clamping voltage of P4SMA56AHM3/I under surge conditions?
The P4SMA56AHM3/I clamps to a maximum of 77.0 V when subjected to its rated peak pulse current of 5.2 A (10/1000 µs waveform). This clamping voltage is measured at the device terminals and represents the upper limit of voltage imposed on the protected circuit during transient events - a core performance parameter of the P4SMA56AHM3/I.
Does P4SMA56AHM3/I require special PCB layout considerations?
Yes - for optimal thermal and electrical performance, the P4SMA56AHM3/I should be mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as defined in the Vishay datasheet. This pad area ensures adequate heat dissipation (RθJA = 120 °C/W) and maintains the rated 400 W pulse power capability of the P4SMA56AHM3/I.
P4SMA56AHM3/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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA56AHM3/I FAQ
1.How can I place an order for P4SMA56AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA56AHM3/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 P4SMA56AHM3/I reliable?
The price and inventory of P4SMA56AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA56AHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA56AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA56AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA56AHM3/I?
P4SMA56AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA56AHM3/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 P4SMA56AHM3/I?
For technical support, including P4SMA56AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA56AHM3/I requirements.
6.How does Aetrix verify that P4SMA56AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA56AHM3/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 P4SMA56AHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA56AHM3/I?
All P4SMA56AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA56AHM3/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 P4SMA56AHM3/I part is unused and in its original packaging.
Return procedure for P4SMA56AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA56AHM3/I Tags
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