My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA56CAHE3/5A
- Part No.:
- P4SMA56CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA56CAHE3/5A.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,410
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA56CAHE3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P4SMA series, designed for clamping voltage transients on signal or power lines. It features a 56 V breakdown voltage (VBR = 53.2–58.8 V at IT = 1.0 mA), 77.0 V maximum clamping voltage (VC) at 5.2 A peak pulse current, and 400 W peak pulse power rating with a 10/1000 µs waveform - suitable for protecting automotive sensor interfaces and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the P4SMA56CAHE3/5A datasheet, P4SMA56CAHE3/5A pinout, P4SMA56CAHE3/5A application, or P4SMA56CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and thermal performance under repetitive surge conditions in automotive-grade designs.
Technical Context
The P4SMA56CAHE3/5A operates as a symmetric, bidirectional avalanche diode with no polarity marking - enabling identical clamping behavior in both directions. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM = 47.8 V), while its MSL Level 1 rating supports lead-free reflow up to 260 °C.
Designed for transient suppression in ungrounded or floating signal paths, it delivers fast response time (<1 ns), low incremental surge resistance, and meets UL 497B recognition for protector classification. The device is rated for continuous operation from –65 °C to +150 °C junction temperature and derates linearly above 25 °C ambient per Figure 2 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 53.2–58.8 V at 1.0 mA test current - defines precise clamping onset threshold for bidirectional overvoltage events |
| Stand-off Voltage VWM | 47.8 V maximum - ensures reliable non-conduction during normal 48 V system operation without leakage-induced power loss |
| Clamping Voltage VC | 77.0 V at 5.2 A IPPM - limits downstream voltage stress to safe levels for 3.3 V/5 V logic and analog front-ends |
| Peak Pulse Power PPPM | 400 W (10/1000 µs) - sustains high-energy transients common in automotive load-dump and inductive kick scenarios |
| Operating Temperature | –65 °C to +150 °C - supports under-hood and industrial control environments without derating penalties below 125 °C |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
| Package | SMA (DO-214AC) - industry-standard SMD footprint with 5.0 mm × 5.0 mm copper pad thermal design for 3.3 W steady-state dissipation |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are functionally interchangeable due to symmetrical construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bidirectional terminal pair | Identical avalanche conduction in either direction - enables placement across floating differential lines or AC-coupled signals without orientation constraints |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage drift over 10+ years in harsh environments |
| 400 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 1/2a/5a transients without degradation when mounted per recommended pad layout |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock testing |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without pre-baking or special handling |
| UL 497B recognized (QVGQ2) | Approved for use in telecom and industrial safety-critical surge protection circuits per Underwriters Laboratories |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs from load-dump and jump-start induced transients in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point before transceiver IC. Use Value: Limits line voltage to ≤77 V during 400 W surges, preserving transceiver integrity and meeting ISO 16750-2 requirements. |
Use Scenario: Safeguarding differential CAN_H/CAN_L lines against ESD (±8 kV contact) and EFT (40 A/m) in factory automation nodes. IC Role / Device Role / Timing Role: Symmetric TVS pair bridging differential bus to chassis ground. Use Value: Sub-1 ns response prevents data corruption during fast transients while maintaining <1 pF junction capacitance at 0 V bias. |
| Telecom DSL Line Surge Suppression | Consumer Appliance Motor Drive Feedback Protection |
Use Scenario: Shielding ADSL/VDSL line drivers from lightning-induced surges entering via outdoor copper pairs. IC Role / Device Role / Timing Role: Primary protection stage before gas discharge tube (GDT) and secondary filtering. Use Value: 47.8 V stand-off allows uninterrupted 48 V phantom power delivery while clamping >1 kV transients to safe levels. |
Use Scenario: Securing hall-effect sensor outputs in washing machine motor controllers exposed to brush-commutator noise. IC Role / Device Role / Timing Role: Localized TVS at sensor PCB edge, adjacent to connector. Use Value: Withstands repetitive 300 W surges (duty cycle ≤0.01%) from motor commutation spikes without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA | Higher 58 V nominal VBR, 600 W PPPM, SMB package (larger footprint, lower RθJA) | Better suited for higher-power industrial drives where board space permits larger package | Select when thermal margin >10 °C/W is required or when 600 W surge headroom is critical |
| 1.5KE56CA | Through-hole DO-201 package, same VBR/VC, 1500 W PPPM but slower response (>5 ns) | Used in legacy power supply input stages where wave soldering is preferred and speed is secondary | Choose only for cost-sensitive, non-automotive designs where reflow compatibility is not required |
Compared with SMBJ58CA and 1.5KE56CA, the P4SMA56CAHE3/5A offers optimal balance of AEC-Q101 compliance, compact SMA footprint, and sub-1 ns response - making it the preferred choice for new automotive and space-constrained industrial designs requiring validated reliability.
Availability
P4SMA56CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus hardening, and telecom line surge suppression requiring stable component supply across extended production lifecycles.
Supply support for P4SMA56CAHE3/5A 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 and application-specific validation.
The P4SMA series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for robustness under repetitive surge stress and qualified to AEC-Q101 for under-hood deployment.
FAQ
What is the maximum clamping voltage of the P4SMA56CAHE3/5A under a 10/1000 µs surge?
The P4SMA56CAHE3/5A has a maximum clamping voltage (VC) of 77.0 V at 5.2 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per Figure 1 and Table 1 of the Vishay datasheet 88367 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The P4SMA56CAHE3/5A maintains this clamping performance across its full operating temperature range.
Is the P4SMA56CAHE3/5A suitable for automotive applications?
Yes, the P4SMA56CAHE3/5A is AEC-Q101 qualified (indicated by the HE3 suffix) and specifically validated for automotive use, including temperature cycling, high-temperature reverse bias, and mechanical shock testing. Its bidirectional architecture, 47.8 V stand-off voltage, and 77.0 V clamping make it appropriate for protecting CAN/LIN transceivers, sensor interfaces, and body control modules. The P4SMA56CAHE3/5A meets ISO 16750-2 pulse test requirements when applied per recommended PCB layout.
What does the "CA" suffix mean in P4SMA56CAHE3/5A?
The "CA" suffix in P4SMA56CAHE3/5A denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical breakdown and clamping characteristics regardless of voltage polarity. Unlike unidirectional variants (e.g., P4SMA56A), the CA version has no cathode band marking and is used where the protected line lacks defined DC polarity, such as differential buses or AC-coupled signals. The P4SMA56CAHE3/5A leverages this symmetry for robust protection in floating or alternating signal paths.
What is the thermal resistance of the P4SMA56CAHE3/5A in standard mounting conditions?
The P4SMA56CAHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. This value assumes still air convection and defines the temperature rise above ambient per watt of steady-state power dissipation. For the P4SMA56CAHE3/5A, this supports continuous 3.3 W operation at 25 °C ambient, with linear derating above that temperature per Figure 2.
How does the P4SMA56CAHE3/5A differ from the P4SMA56A variant?
The P4SMA56CAHE3/5A is bidirectional with symmetrical clamping in both directions and no polarity marking, whereas the P4SMA56A is unidirectional with a cathode band and conducts only in reverse bias. Electrically, the P4SMA56CAHE3/5A has identical VBR (53.2–58.8 V), VWM (47.8 V), and VC (77.0 V) ratings but applies them equally across both terminals. The P4SMA56CAHE3/5A also carries AEC-Q101 qualification (HE3), while P4SMA56A may be offered in commercial-grade (E3/M3) versions without automotive validation.
P4SMA56CAHE3/5A 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA56CAHE3/5A FAQ
1.How can I place an order for P4SMA56CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA56CAHE3/5A 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 P4SMA56CAHE3/5A reliable?
The price and inventory of P4SMA56CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA56CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA56CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA56CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA56CAHE3/5A?
P4SMA56CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA56CAHE3/5A 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 P4SMA56CAHE3/5A?
For technical support, including P4SMA56CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA56CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA56CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA56CAHE3/5A 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 P4SMA56CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA56CAHE3/5A?
All P4SMA56CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA56CAHE3/5A, 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 P4SMA56CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA56CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA56CAHE3/5A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
