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Vishay General Semiconductor - Diodes Division P4SMA56CAHM3/H
- Part No.:
- P4SMA56CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA56CAHM3/H.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,175
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Product details
Overview
P4SMA56CAHM3/H 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 automotive-grade sensor interfaces and industrial I/O circuits.
For engineers reviewing the P4SMA56CAHM3/H datasheet, P4SMA56CAHM3/H pinout, P4SMA56CAHM3/H application, or P4SMA56CAHM3/H 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/H operates as a bidirectional voltage-clamping device with symmetrical avalanche breakdown in both polarities, enabling protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ns), critical for suppressing sub-microsecond transients induced by inductive switching or ESD events.
Rated for 400 W peak pulse power (derated to 300 W above 91 V), it sustains repetitive surges at 0.01% duty cycle when mounted on 5.0 mm × 5.0 mm copper pads. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive applications, with halogen-free molding compound and matte tin-plated leads compliant with J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1 mA - defines precise avalanche onset threshold for reliable clamping initiation |
| VWM | 47.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 77.0 V at 5.2 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 400 W - peak transient energy absorption capability under standardized surge waveform |
| IFSM | Not applicable - bidirectional device has no forward surge rating (unidirectional only) |
| TJ max. | +150 °C - enables operation in under-hood automotive environments and high-ambient industrial settings |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, informs PCB copper pad sizing for thermal management |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads; polarity unmarked for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetric with cathode in bidirectional operation | Enables clamping conduction in either polarity - no directional mounting required on PCB |
| Cathode | Current exit terminal in forward bias; symmetric with anode in bidirectional operation | Provides identical clamping behavior across both terminals - simplifies layout and routing |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including engine control modules and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for EU, China RoHS, and automotive supply chains |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| 400 W peak pulse power (10/1000 µs) | Protects against IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) in industrial fieldbus nodes |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA) over temperature and lifetime |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Withstands 400 W surges while maintaining VC ≤ 77.0 V, preventing latch-up or damage to 5 V or 3.3 V interface ICs in AEC-Q100 Grade 2 systems. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs exposed to ground potential differences and motor drive noise. IC Role / Device Role / Timing Role: Differential-line TVS across A/B bus lines to clamp common-mode and differential-mode transients simultaneously. Use Value: Symmetrical 56 V clamping threshold matches typical RS-485 common-mode range (±7 V to ±12 V), ensuring robust immunity without false triggering. |
| Consumer USB Port ESD Protection | Telecom DSL Line Protection |
Use Scenario: Shielding USB 2.0 data lines (D+/D−) in set-top boxes and smart displays from human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to USB connector to absorb 15 kV contact discharge per IEC 61000-4-2. Use Value: Sub-1 ns response time and <1 µA leakage at 47.8 V preserve signal integrity and prevent standby current drain in battery-backed devices. |
Use Scenario: Front-end surge suppression on DSL line cards handling asymmetric xDSL signals (ADSL/VDSL) in central office equipment. IC Role / Device Role / Timing Role: Primary protection device between line transformer and codec IC, rated for repeated lightning-induced surges. Use Value: 400 W rating with 0.01% duty cycle supports telecom-grade surge endurance; halogen-free construction meets Telcordia GR-1089-CORE requirements. |
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); 58 V VBR, 78.5 V VC at 5.1 A; RθJA = 80 °C/W | Better power dissipation in high-repetition surge environments; larger footprint requires PCB redesign | Select when higher thermal margin is needed and board space allows SMB footprint |
| 1.5KE56CA | Through-hole (DO-15); 56 V VBR, 93.6 V VC at 4.3 A; 1500 W PPPM; no AEC-Q101 qualification | Higher peak power but slower response and no automotive qualification; unsuitable for automated SMT assembly | Use only in legacy through-hole designs where AEC-Q101 is not required and manual assembly is acceptable |
Compared with SMBJ58CA and 1.5KE56CA, the P4SMA56CAHM3/H offers optimal balance of AEC-Q101 compliance, SMT compatibility, and precise 56 V clamping for space-constrained automotive and industrial PCBs - without requiring layout changes or sacrificing qualification status.
Availability
P4SMA56CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 nodes, and consumer USB interface protection requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P4SMA56CAHM3/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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P4SMA Series targets cost-sensitive, high-reliability transient suppression in automotive, industrial, and telecom applications - engineered for automated placement, AEC-Q101 compliance, and consistent clamping performance across temperature and life cycle.
FAQ
What is the breakdown voltage tolerance for P4SMA56CAHM3/H?
The P4SMA56CAHM3/H has a specified breakdown voltage range of 53.2 V to 58.8 V at 1 mA test current, representing ±5% tolerance around the nominal 56 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 48 V automotive subsystems and industrial 24 V/48 V interfaces where overvoltage margins are constrained.
Is P4SMA56CAHM3/H suitable for automotive applications?
Yes, P4SMA56CAHM3/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials meeting JESD201 Class 2 whisker resistance. Its −65 °C to +150 °C operating junction temperature range, MSL Level 1 reflow compatibility, and validated surge performance make it suitable for under-hood and cabin-mounted automotive electronics including body control modules, infotainment interfaces, and ADAS sensor signal conditioning circuits.
What does the "HM3" suffix indicate in P4SMA56CAHM3/H?
The "HM3" suffix in P4SMA56CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. The "H" indicates 7-inch tape-and-reel packaging (1800 units per reel), while "M3" confirms halogen-free molding compound and matte tin plating - distinguishing it from commercial-grade "E3" or non-automotive "M3" variants without AEC-Q101 validation.
How does P4SMA56CAHM3/H compare to unidirectional P4SMA56A variants?
Unlike unidirectional P4SMA56A, the P4SMA56CAHM3/H provides symmetrical clamping in both directions with no polarity marking, making it ideal for AC-coupled or differential signal lines like RS-485, CAN, or USB D+/D−. It lacks forward surge rating (IFSM) but maintains identical VBR, VWM, VC, and PPPM specs - enabling direct substitution where bidirectional protection is required without changing PCB layout.
What is the maximum clamping voltage of P4SMA56CAHM3/H under surge conditions?
The maximum clamping voltage (VC) of P4SMA56CAHM3/H is 77.0 V at 5.2 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case surge events, ensuring compatibility with 5 V, 3.3 V, and 48 V logic interfaces while maintaining safe margin below absolute maximum ratings of downstream ICs.
P4SMA56CAHM3/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:
- 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/H FAQ
1.How can I place an order for P4SMA56CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA56CAHM3/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 P4SMA56CAHM3/H reliable?
The price and inventory of P4SMA56CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA56CAHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA56CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA56CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA56CAHM3/H?
P4SMA56CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA56CAHM3/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 P4SMA56CAHM3/H?
For technical support, including P4SMA56CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA56CAHM3/H requirements.
6.How does Aetrix verify that P4SMA56CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA56CAHM3/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 P4SMA56CAHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA56CAHM3/H?
All P4SMA56CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA56CAHM3/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 P4SMA56CAHM3/H part is unused and in its original packaging.
Return procedure for P4SMA56CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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