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Vishay General Semiconductor - Diodes Division P4SMA56CAHE3_A/H
- Part No.:
- P4SMA56CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA56CAHE3_A/H.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,018
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Product details
Overview
P4SMA56CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features 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 - suitable for protecting automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the P4SMA56CAHE3_A/H datasheet, P4SMA56CAHE3_A/H pinout, P4SMA56CAHE3_A/H application, or P4SMA56CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance in forward and reverse directions. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the SMA package supports high thermal dissipation via 0.2" × 0.2" copper pads per terminal.
The device meets MSL Level 1 per J-STD-020 (peak reflow ≤260 °C), is RoHS-compliant, and qualified to AEC-Q101 for automotive applications. It exhibits a typical thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), enabling reliable operation under repetitive transient stress up to 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1 mA - defines precise voltage threshold where clamping begins in either polarity |
| VWM | 47.8 V - maximum continuous working voltage before leakage exceeds 1 µA; sets safe operating margin below VBR |
| VC @ IPPM | 77.0 V at 5.2 A - clamped voltage during 10/1000 µs surge; determines protected circuit's worst-case overvoltage exposure |
| PPPM | 400 W - peak pulse power handling capacity; enables suppression of high-energy transients like ISO 7637-2 Load Dump surges |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.28 mm × 4.50 mm footprint and 2.29 mm height; compatible with J-STD-002 soldering |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, polarity-unmarked for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal 1 | One side of symmetrical PN junction; forms clamping path during negative transients relative to cathode reference |
| Cathode | Terminal 2 | Other side of symmetrical PN junction; forms clamping path during positive transients; no band marking on bidirectional units |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware layout in differential or AC-coupled lines |
| 400 W peak pulse power | Rated per 10/1000 µs waveform - handles high-energy transients such as relay coil flyback or EFT bursts without degradation |
| Low clamping ratio (VC/VBR) | ~1.45 - tight voltage control minimizes stress on downstream ICs like CAN transceivers or ADC front-ends |
| AEC-Q101 qualification | Validated for automotive use - ensures long-term reliability in engine control modules, body electronics, and ADAS sensor nodes |
| MSL Level 1 | Reflow-compatible up to 260 °C peak - supports standard lead-free assembly without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching noise in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal line and ground, absorbing transients before they reach MCU analog inputs or LIN transceivers. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor interface ICs by limiting excursion to ≤77 V during 100 V/50 ms load dump events. |
Use Scenario: Safeguarding RS-485 or 4–20 mA current loop terminals in PLC modules exposed to field wiring surges and ESD. IC Role / Device Role / Timing Role: Line-to-ground TVS on differential pair or single-ended signal path, activated within <1 ns to suppress >1 kV EFT pulses. Use Value: Maintains signal integrity and system uptime by clamping transients below the 80 V absolute maximum rating of isolated RS-485 transceivers. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side overvoltage protection on 12 V/24 V DC output rails of wall adapters and USB-PD chargers. IC Role / Device Role / Timing Role: Bidirectional clamp between VOUT and GND, triggered by capacitor discharge or regulator fault conditions. Use Value: Limits output overshoot to 77 V during 500 ms short-circuit recovery, preventing damage to connected devices rated for 36 V max input. |
Use Scenario: Primary protection for Ethernet PHY or DSL line drivers against lightning-induced surges entering via RJ-45 jacks. IC Role / Device Role / Timing Role: First-stage TVS on line side of isolation transformer or common-mode choke, shunting common-mode energy to chassis ground. Use Value: Withstands 400 W peak surges per ITU-T K.21 Basic Level requirements, reducing secondary protection burden on integrated PHY ESD structures. |
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 VBR (55–61 V), same SMA package but SMB outline (DO-214AA); 600 W PPPM; higher VC (93.6 V) | Less precise clamping near 56 V rail; better suited for 48 V systems with wider tolerance | Select when higher surge margin is prioritized over tight clamping voltage; verify PCB pad compatibility with larger SMB footprint |
| 1.5KE56CA | Through-hole DO-15 package; 1500 W PPPM; VC = 93.6 V at 16.1 A; not AEC-Q101 qualified | Not suitable for automated SMT production or automotive qualification requirements | Choose only for prototyping or legacy through-hole designs where board space and qualification are not constraints |
Compared with P4SMA56CAHE3_A/H, SMBJ58CA offers higher surge robustness but looser voltage control, while 1.5KE56CA provides greater power handling at the cost of manual assembly and no automotive qualification - making P4SMA56CAHE3_A/H optimal for space-constrained, AEC-Q101–required SMT deployments.
Availability
P4SMA56CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, consumer power adapter secondary-side protection, and telecom line card surge suppression requiring stable component supply and full traceability.
Supply support for P4SMA56CAHE3_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 passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and consumer electronics - delivering AEC-Q101–qualified TVS performance in compact surface-mount packages for automated manufacturing.
FAQ
What does the "CA" suffix indicate in P4SMA56CAHE3_A/H?
The "CA" suffix in P4SMA56CAHE3_A/H denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional variants (e.g., P4SMA56A), it has no cathode marking and delivers identical breakdown (53.2–58.8 V), clamping (77.0 V), and leakage characteristics regardless of voltage polarity applied across its terminals.
Is P4SMA56CAHE3_A/H suitable for automotive applications?
Yes, P4SMA56CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix and revision code "_A/H". It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101, and is rated for operation from –65 °C to +150 °C - making it appropriate for engine control units, body electronics, and ADAS sensor interfaces.
What is the maximum clamping voltage of P4SMA56CAHE3_A/H under surge conditions?
The maximum clamping voltage of P4SMA56CAHE3_A/H is 77.0 V, measured at 5.2 A peak pulse current (IPPM) using the standardized 10/1000 µs double-exponential waveform. This value represents the highest voltage that will appear across the device during a defined transient event, directly determining the overvoltage stress imposed on downstream circuitry.
How does the SMA (DO-214AC) package of P4SMA56CAHE3_A/H affect thermal performance?
The SMA (DO-214AC) package of P4SMA56CAHE3_A/H delivers a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This enables effective heat dissipation during repetitive surge events, supporting continuous power dissipation of 3.3 W at 50 °C ambient and ensuring stable operation even under sustained transient loads in enclosed industrial enclosures.
Can P4SMA56CAHE3_A/H replace unidirectional TVS diodes in existing designs?
P4SMA56CAHE3_A/H can replace unidirectional TVS diodes only if the circuit topology and failure mode analysis support bidirectional clamping - for example, across floating signal pairs or AC-coupled lines. It must not be substituted in unidirectional configurations where polarity-dependent forward conduction is required (e.g., DC power rail clamping), as its symmetrical structure lacks a defined anode/cathode orientation for rectification.
P4SMA56CAHE3_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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA56CAHE3_A/H FAQ
1.How can I place an order for P4SMA56CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA56CAHE3_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 P4SMA56CAHE3_A/H reliable?
The price and inventory of P4SMA56CAHE3_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 P4SMA56CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA56CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA56CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA56CAHE3_A/H?
P4SMA56CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA56CAHE3_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 P4SMA56CAHE3_A/H?
For technical support, including P4SMA56CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA56CAHE3_A/H requirements.
6.How does Aetrix verify that P4SMA56CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA56CAHE3_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 P4SMA56CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA56CAHE3_A/H?
All P4SMA56CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA56CAHE3_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 P4SMA56CAHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA56CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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