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Vishay General Semiconductor - Diodes Division P4SMA56CAHE3_A/I
- Part No.:
- P4SMA56CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA56CAHE3_A/I.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,816
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Product details
Overview
P4SMA56CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P4SMA series, designed for clamping voltage transients on signal and power lines. It features a 56 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 µs), 77.0 V maximum clamping voltage (VC) at rated current, and AEC-Q101 qualification for automotive applications.
For engineers reviewing the P4SMA56CAHE3_A/I datasheet, P4SMA56CAHE3_A/I pinout, P4SMA56CAHE3_A/I application, or P4SMA56CAHE3_A/I equivalent, this device is selected for robust ESD and surge protection in automotive sensor interfaces, industrial I/O lines, and telecom power rails where low-profile SMA packaging and repeatable clamping performance are critical.
Technical Context
The P4SMA56CAHE3_A/I operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while its low incremental surge resistance minimizes voltage overshoot during high-current transients.
Rated for 400 W peak pulse power (10/1000 µs waveform) up to TA = 25 °C - derated linearly above that temperature - it delivers 5.2 A peak pulse current (IPPM) with a maximum clamping voltage of 77.0 V, enabling reliable protection of downstream 56 V-rated circuits such as CAN FD transceivers and automotive power management ICs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1.0 mA test current - defines precise voltage threshold where avalanche conduction begins in both directions |
| VWM | 47.8 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA; sets safe operating margin below clamping onset |
| VC @ IPPM | 77.0 V at 5.2 A (10/1000 µs) - actual clamped voltage seen by protected circuit during worst-case surge event |
| PPPM | 400 W - peak transient energy absorption capability under standard 10/1000 µs waveform; sufficient for ISO 7637-2 Pulse 1/2/5a |
| IPPM | 5.2 A - peak surge current the device safely diverts without degradation, validated per Fig. 3 waveform |
| TJmax | +150 °C - maximum junction temperature rating supports operation in under-hood automotive environments |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability requirements. No polarity marking - bidirectional symmetry confirmed per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical PN junction; accepts surge current in either direction |
| Cathode | Transient current entry (positive polarity) | Second terminal of symmetrical PN junction; identical electrical role to Anode in bidirectional configuration |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 400 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Level III and IEC 61000-4-5 Line-to-Line surge requirements for automotive ECUs |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on protected ICs - e.g., keeps 56 V-rated CAN FD transceivers within safe operating area |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive use including temperature cycling (-40 °C to +125 °C), HTRB, and mechanical shock |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without moisture sensitivity handling |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control modules from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground, clamping transients before they reach the sensor signal conditioner or microcontroller ADC input. Use Value: Maintains signal integrity under ISO 16750-2 load dump (12 V system: +120 V/0.5 s) and prevents latch-up or damage to 56 V-tolerant analog front-end ICs. |
Use Scenario: Safeguarding PLC digital input channels connected to 24 V DC field devices subject to relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Standoff voltage (47.8 V) allows normal 24 V operation while clamping surges >53.2 V to ≤77.0 V within nanoseconds. Use Value: Eliminates need for external series impedance or RC filtering; enables direct connection to ruggedized 24 V inputs with <1 ns response and no signal distortion. |
| Telecom Power Rail Protection | Consumer USB-C Power Delivery Line |
|
Use Scenario: Guarding 48 V PoE+ (IEEE 802.3at) power inputs against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Placed across VIN-GND at DC/DC converter input, absorbing 400 W pulses without thermal runaway. Use Value: Withstands repeated 10/1000 µs surges up to 5.2 A while maintaining <1 µA leakage at 47.8 V - preserving efficiency in always-on telecom equipment. |
Use Scenario: Protecting USB-C CC and VCONN lines in portable chargers and accessories exposed to human-body-model ESD (±15 kV). IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp (CJ ~20 pF typical at VWM) placed inline with high-speed data/power pins. Use Value: Clamps ESD events to <77.0 V within <1 ns without distorting 5 Gbps USB 3.2 signals or interfering with PD negotiation timing. |
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, 600 W PPPM, but not AEC-Q101 qualified in standard grade | Used in industrial/commercial systems where automotive qualification is not required | Select SMBJ58CA when higher surge margin is needed and AEC-Q101 is unnecessary; verify layout compatibility with larger SMB footprint |
| 1.5KE56CA | Through-hole DO-15 package, same VBR/VC, 1500 W PPPM, but no AEC-Q101 or MSL-1 rating | Preferred for prototyping or legacy through-hole designs with high-energy surge requirements | Choose 1.5KE56CA only for non-automotive, non-SMT applications requiring >400 W surge handling; incompatible with automated SMT assembly |
Compared with SMBJ58CA and 1.5KE56CA, the P4SMA56CAHE3_A/I uniquely combines AEC-Q101 qualification, MSL Level 1 reflow compatibility, and precise 56 V clamping in a compact SMA package - making it the only option qualified for volume production in automotive SMT modules requiring zero rework risk and full traceability.
Availability
P4SMA56CAHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, and telecom power supply protection requiring stable component supply, full AEC-Q101 documentation, and RoHS-compliant sourcing.
Supply support for P4SMA56CAHE3_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, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The P4SMA series was developed specifically for surface-mount transient suppression in space-constrained, high-reliability applications - targeting automotive, industrial, and telecom markets where consistent clamping, low leakage, and AEC-Q101 compliance are mandatory.
FAQ
What is the exact breakdown voltage range for P4SMA56CAHE3_A/I?
The P4SMA56CAHE3_A/I has a guaranteed breakdown voltage (VBR) range of 53.2 V to 58.8 V at 1.0 mA test current, measured in both directions due to its bidirectional construction. This specification is verified per Vishay Document Number 88367, page 2, and applies across the full operating temperature range of -65 °C to +150 °C.
Is P4SMA56CAHE3_A/I suitable for automotive applications?
Yes, the P4SMA56CAHE3_A/I is AEC-Q101 qualified (indicated by the "HE3" suffix) and rated for operation from -65 °C to +150 °C. It meets automotive requirements for temperature cycling, highly accelerated life testing (HALT), and ESD immunity, making it appropriate for engine control units, ADAS sensors, and body electronics where reliability is critical.
What is the maximum clamping voltage of P4SMA56CAHE3_A/I under surge conditions?
The P4SMA56CAHE3_A/I clamps to a maximum of 77.0 V at 5.2 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured per Figure 1 and Table on page 2 of the Vishay P4SMA datasheet (Doc. #88367) and represents the worst-case voltage imposed on protected circuitry during transient events.
Does P4SMA56CAHE3_A/I have polarity markings?
No, the P4SMA56CAHE3_A/I is a bidirectional TVS diode and carries no polarity marking on its SMA (DO-214AC) package. Its symmetrical construction means both terminals function identically - there is no anode/cathode distinction in circuit application, and orientation during placement has no electrical effect.
What is the surge current rating for P4SMA56CAHE3_A/I?
The P4SMA56CAHE3_A/I supports a peak pulse current (IPPM) of 5.2 A under the 10/1000 µs waveform condition, derived directly from its 400 W peak pulse power rating and 77.0 V clamping voltage (I = P/V). This rating is valid at TA = 25 °C and derates linearly with increasing ambient temperature per Figure 2 in the Vishay datasheet.
P4SMA56CAHE3_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:
- -
- 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/I FAQ
1.How can I place an order for P4SMA56CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA56CAHE3_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 P4SMA56CAHE3_A/I reliable?
The price and inventory of P4SMA56CAHE3_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 P4SMA56CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA56CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA56CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA56CAHE3_A/I?
P4SMA56CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA56CAHE3_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 P4SMA56CAHE3_A/I?
For technical support, including P4SMA56CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA56CAHE3_A/I requirements.
6.How does Aetrix verify that P4SMA56CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA56CAHE3_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 P4SMA56CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA56CAHE3_A/I?
All P4SMA56CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA56CAHE3_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 P4SMA56CAHE3_A/I part is unused and in its original packaging.
Return procedure for P4SMA56CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA56CAHE3_A/I Tags
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