My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA43CA-E3/5A
- Part No.:
- P4SMA43CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43CA-E3/5A.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,001
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA43CA-E3/5A 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 and power lines. It features a 43 V breakdown voltage (VBR), 36.8 V standoff voltage (VWM), 59.3 V maximum clamping voltage (VC) at 6.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P4SMA43CA-E3/5A datasheet, P4SMA43CA-E3/5A pinout, P4SMA43CA-E3/5A application, or P4SMA43CA-E3/5A equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, thermal resistance data, and RoHS-compliant commercial-grade sourcing details - all specific to the CA (bidirectional) variant in SMA (DO-214AC) package with E3/5A tape-and-reel delivery.
Technical Context
The P4SMA43CA-E3/5A 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 low leakage (<1.0 µA at VWM), while its 120 °C/W junction-to-ambient thermal resistance requires careful PCB copper pad design (0.2" × 0.2") to sustain repetitive 400 W pulses at ≤0.01% duty cycle.
It complies with AEC-Q101 when ordered with HE3/HM3 suffixes but the P4SMA43CA-E3/5A variant is RoHS-compliant commercial grade. The device exhibits a +0.101 %/°C temperature coefficient of VBR, enabling predictable voltage shift across -65 °C to +150 °C operating range, and meets UL 94 V-0 flammability standard for its molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 40.9–45.2 V at 1.0 mA test current - defines precise clamping onset threshold for bidirectional surge protection |
| Standoff Voltage VWM | 36.8 V maximum - ensures no conduction during normal operation up to rated DC or RMS voltage |
| Clamping Voltage VC | 59.3 V at 6.7 A IPPM (10/1000 µs) - limits downstream voltage stress during transient events |
| Peak Pulse Power PPPM | 400 W - sustains single or low-duty-cycle surges per IEC 61000-4-5 Level 4 without degradation |
| Package | SMA (DO-214AC) - surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height for automated assembly |
| Junction Temperature Range | -65 °C to +150 °C - supports operation in harsh environments including under-hood automotive and industrial controls |
| RoHS Compliance | E3 suffix - lead-free matte tin-plated terminals, compliant with EU RoHS Directive 2011/65/EU |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with glass-passivated chip junction; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102; bidirectional devices have no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional operation | Enables clamping in both directions - no external polarity assignment required in circuit layout |
| Cathode | Current exit terminal in forward bias; symmetrical with anode in bidirectional operation | Identical electrical behavior to anode - device functions identically regardless of orientation on PCB |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity testing up to Level 4 (4 kV line-to-line) without derating |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V logic interfaces |
| MSL Level 1 (J-STD-020) | Allows unlimited floor life and reflow at peak 260 °C - compatible with standard SMT assembly processes |
| UL 94 V-0 flammability rating | Ensures flame-retardant encapsulation for safety-critical applications in consumer and industrial equipment |
| Fast response time (<1 ps) | Clamps transients before sensitive downstream components experience damaging overvoltage |
Applications
| Automotive Sensor Signal Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., temperature, pressure) from load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential or single-ended signal lines to clamp ±100 V spikes within nanoseconds. Use Value: Prevents latch-up or gate oxide damage in microcontrollers and transceivers by limiting voltage to ≤59.3 V during 6.7 A surge events. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against ESD and relay-coil flyback in factory automation cabinets. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC inputs to absorb 400 W surges induced by contactor switching or lightning-induced coupling. Use Value: Maintains system uptime by eliminating false triggering and component failure - validated for 100,000+ surge cycles at 0.01% duty. |
| Telecom Line Interface Protection | Consumer Device USB/UART Protection |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base stations and remote radio units from induced surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between line pair and transceiver, referenced to common-mode ground. Use Value: Enables compliance with ITU-T K.21 Basic Protection Level (1 kV/42 Ω) using minimal board space in DO-214AC footprint. |
Use Scenario: Adding robust ESD immunity to USB 2.0 D+/D− or UART TX/RX lines in smart home hubs and portable medical monitors. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <50 pF at 0 V) placed directly at connector to shunt >8 kV HBM ESD pulses. Use Value: Preserves signal integrity up to 480 Mbps while meeting IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) without data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package (7.11 mm × 6.22 mm); 62.7 V VC at 9.6 A | Better suited for higher-energy surges where board space allows larger footprint | Select when surge energy exceeds 400 W or when thermal mass requirements demand lower RθJA (80 °C/W) |
| 1.5KE43CA | Through-hole TO-218 package; 1500 W PPPM; 69.4 V VC at 21.7 A; higher leakage (5.0 µA max) | Designed for legacy designs or high-power AC mains protection where SMT is not feasible | Choose only for through-hole manufacturing or when >1 kW transient absorption is mandatory |
Compared with SMBJ43CA and 1.5KE43CA, the P4SMA43CA-E3/5A offers optimal balance of compact SMA footprint, 400 W capability, and low-profile assembly - making it preferred for space-constrained, high-volume SMT applications where 6.7 A clamping current and 59.3 V VC meet system-level protection targets.
Availability
P4SMA43CA-E3/5A is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive sensor interface hardening, and telecom line surge suppression requiring stable component supply, full traceability, and RoHS-compliant commercial-grade assurance.
Supply support for P4SMA43CA-E3/5A 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, TVS, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA series was engineered for cost-effective, high-volume surface-mount transient suppression in consumer, industrial, and automotive electronics - prioritizing low profile, automated placement compatibility, and consistent clamping across wide temperature ranges.
FAQ
What is the maximum clamping voltage of the P4SMA43CA-E3/5A under standard test conditions?
The P4SMA43CA-E3/5A has a maximum clamping voltage (VC) of 59.3 V at 6.7 A peak pulse current with a 10/1000 µs waveform, measured per IEC 61000-4-5. This value is guaranteed across the full operating temperature range (-65 °C to +150 °C) and defines the upper voltage limit imposed on protected circuits during surge events. The P4SMA43CA-E3/5A achieves this with low incremental resistance, ensuring minimal overshoot beyond VC.
Is the P4SMA43CA-E3/5A suitable for automotive applications requiring AEC-Q101 qualification?
The P4SMA43CA-E3/5A is RoHS-compliant commercial grade and not AEC-Q101 qualified. For automotive use, Vishay specifies the P4SMA43CAHE3_A variant (with HE3 suffix and revision code A), which undergoes AEC-Q101 stress testing. The P4SMA43CA-E3/5A may be used in non-safety-critical automotive subsystems only after full system-level validation - but the P4SMA43CA-E3/5A itself carries no AEC-Q101 certification.
How does the bidirectional configuration of the P4SMA43CA-E3/5A affect PCB layout compared to unidirectional TVS diodes?
The P4SMA43CA-E3/5A has no polarity marking and identical electrical behavior in both directions, so PCB layout requires no orientation alignment - unlike unidirectional variants (e.g., P4SMA43A) that mandate cathode band alignment toward the protected line's reference. This simplifies pick-and-place programming and eliminates risk of reverse installation. The P4SMA43CA-E3/5A is ideal for differential or AC-coupled signal paths where polarity reversal is possible.
What is the thermal resistance and recommended PCB pad layout for reliable operation of the P4SMA43CA-E3/5A?
The P4SMA43CA-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures during repetitive 400 W surges, designers must implement these minimum pad dimensions and avoid excessive trace narrowing. The P4SMA43CA-E3/5A thermal performance degrades significantly with smaller pads or insufficient copper area.
Does the P4SMA43CA-E3/5A meet UL recognition standards for surge protection devices?
Yes - the P4SMA43CA-E3/5A is Underwriters Laboratories (UL) recognized under file E136766 for both unidirectional and bidirectional configurations, classified per UL 497B for signal line protectors. This applies to the entire P4SMA family, including the P4SMA43CA-E3/5A, confirming compliance with safety requirements for transient voltage suppression in commercial and industrial equipment.
P4SMA43CA-E3/5A 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA43CA-E3/5A FAQ
1.How can I place an order for P4SMA43CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43CA-E3/5A 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 P4SMA43CA-E3/5A reliable?
The price and inventory of P4SMA43CA-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA43CA-E3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA43CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43CA-E3/5A?
P4SMA43CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43CA-E3/5A 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 P4SMA43CA-E3/5A?
For technical support, including P4SMA43CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43CA-E3/5A requirements.
6.How does Aetrix verify that P4SMA43CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA43CA-E3/5A 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 P4SMA43CA-E3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA43CA-E3/5A?
All P4SMA43CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43CA-E3/5A, 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 P4SMA43CA-E3/5A part is unused and in its original packaging.
Return procedure for P4SMA43CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA43CA-E3/5A 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 …
