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Vishay General Semiconductor - Diodes Division P4KE51CA-E3/54
- Part No.:
- P4KE51CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE51CA-E3/54.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4KE51CA-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features 400 W peak pulse power (10/1000 μs), 43.6 V standoff voltage (VWM), 48.5–53.6 V breakdown voltage (VBR at 1 mA), and clamps to ≤70.1 V at 5.7 A peak pulse current. Used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P4KE51CA-E3/54 datasheet, P4KE51CA-E3/54 pinout, P4KE51CA-E3/54 application, or P4KE51CA-E3/54 equivalent, key selection criteria include bidirectional clamping capability, DO-41 leaded package compatibility with through-hole PCB assembly, AEC-Q101 qualification for automotive use, and thermal resistance (RθJL = 66 °C/W) for transient power dissipation management.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche breakdown in both polarities, enabling robust ESD and surge immunity without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, critical for consistent clamping under repetitive transients.
The P4KE51CA-E3/54 delivers 400 W peak pulse power per 10/1000 μs waveform at TA = 25 °C, derating linearly above 25 °C per Fig. 2, and supports 175 °C maximum junction temperature. It exhibits 1.0 μA max reverse leakage at 43.6 V and 0.102 %/°C VBR temperature coefficient - essential for stable clamping across automotive temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43.6 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin below breakdown. |
| VBR min/max | 48.5 V / 53.6 V at 1 mA - Confirmed avalanche onset range; ensures predictable clamping threshold in bidirectional mode. |
| VC @ IPPM | ≤70.1 V at 5.7 A - Clamped voltage during 10/1000 μs surge; determines protected circuit's maximum transient exposure. |
| PPPM | 400 W - Peak transient energy handling capacity; validates suitability for IEC 61000-4-5 Level 3/4 surge events. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments and industrial enclosures. |
| RθJL | 66 °C/W - Junction-to-lead thermal resistance; informs heatsinking requirements for repetitive surge duty cycles. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; body length 25.4 mm min, lead diameter 0.71–0.86 mm; RoHS-compliant, UL 94 V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional terminal pair | No polarity marking required; symmetric conduction allows installation without orientation check on PCB. |
| Leads (both) | Current-carrying terminals | Support soldering per J-STD-002/JESD 22-B102; withstand 275 °C for 10 s per JESD 22-B106. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures ±5% VBR tolerance and long-term stability under thermal cycling and humidity stress. |
| 400 W peak pulse power (10/1000 μs) | Validates compliance with IEC 61000-4-5 surge immunity requirements for industrial and automotive interfaces. |
| AEC-Q101 qualification | Confirms reliability for automotive applications including engine control units, ADAS sensors, and infotainment I/O. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on downstream ICs during transient events, reducing risk of latch-up or gate oxide damage. |
| 175 °C TJ max | Enables deployment in high-temperature zones such as powertrain modules and motor drive control boards. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Maintains signal integrity by limiting transient voltage to ≤70.1 V while surviving 400 W surges - critical for AEC-Q100 Grade 2 compliance. |
Use Scenario: Shielding digital input/output channels on programmable logic controllers against EFT/burst and lightning-induced surges in factory automation. IC Role / Device Role / Timing Role: Primary front-end TVS on 24 V DC I/O lines, coordinated with series impedance to meet IEC 61000-4-4/4-5 immunity levels. Use Value: Enables >100,000 surge cycles with no parameter shift due to glass-passivated junction and 175 °C rating. |
| Consumer Power Adapter Input | Telecom Line Interface |
Use Scenario: Secondary-side transient suppression on AC-DC adapter outputs feeding USB-C PD or display power rails. IC Role / Device Role / Timing Role: Fast-response clamping device across +VOUT/GND to prevent overvoltage damage to downstream PMICs and regulators. Use Value: Sub-1 ns response time and 1.0 μA leakage at 43.6 V preserve standby efficiency while ensuring <100 ns clamping latency. |
Use Scenario: Surge protection on RJ-11/RJ-45 telephone line interfaces in VoIP gateways and DSL modems exposed to induced lightning transients. IC Role / Device Role / Timing Role: Bidirectional shunt protector between tip/ring and ground, selected for symmetry and low capacitance (<100 pF). Use Value: 43.6 V VWM provides margin above 48 V nominal ringing voltage while clamping ≤70.1 V to safeguard SLIC and codec ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51CA | DO-214AA package (SMB), 600 W PPPM, lower RθJA (50 °C/W), but higher VF (5.0 V) and larger footprint. | Better suited for surface-mount designs requiring higher surge rating and automated assembly; not through-hole compatible. | Select SMBJ51CA when board space permits SMT layout and 600 W surge margin is required over P4KE51CA-E3/54's 400 W. |
| 1.5KE51CA | DO-201AD package, 1500 W PPPM, same VWM/VBR range, but 3× higher IFSM (150 A) and larger thermal mass. | Preferred for high-energy industrial mains protection where single-event surge magnitude exceeds 400 W capability. | Choose 1.5KE51CA for primary-level AC line or DC bus protection where peak currents exceed 5.7 A and PCB layout accommodates larger DO-201AD body. |
Compared with SMBJ51CA and 1.5KE51CA, the P4KE51CA-E3/54 offers optimal balance of through-hole manufacturability, AEC-Q101 qualification, and 400 W surge handling in compact DO-41 - making it ideal for cost-sensitive, high-reliability automotive and industrial control modules where leaded assembly remains standard.
Availability
P4KE51CA-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, RoHS compliance, and AEC-Q101 traceability.
Supply support for P4KE51CA-E3/54 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, power efficiency, and automotive qualification.
The P4KE51CA-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, bidirectional transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure applications demanding AEC-Q101 and IEC 61000-4-5 compliance.
FAQ
What is the clamping voltage of the P4KE51CA-E3/54 at its rated peak pulse current?
The P4KE51CA-E3/54 clamps to a maximum of 70.1 V at its specified peak pulse current of 5.7 A under a 10/1000 μs waveform. This VC value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance is guaranteed across the full operating temperature range and forms the basis for system-level overvoltage design margins in applications like automotive sensor interfaces.
Is the P4KE51CA-E3/54 suitable for automotive applications?
Yes, the P4KE51CA-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its 175 °C maximum junction temperature, glass-passivated junction, and validated performance under temperature cycling, high-temperature reverse bias, and ESD stress make it appropriate for engine control units, body electronics, and ADAS sensor interfaces. The "HE3" variant (P4KE51CAHE3/54) denotes full AEC-Q101 compliance, while the E3 suffix indicates RoHS-compliant commercial grade with optional qualification path.
How does the bidirectional configuration of P4KE51CA-E3/54 affect PCB layout?
The P4KE51CA-E3/54 has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. This simplifies through-hole assembly and reduces risk of misinsertion on PCBs protecting AC-coupled or differential signal lines. Unlike unidirectional TVS diodes, it requires no cathode band alignment - a key advantage in space-constrained automotive and industrial control boards where manual inspection time must be minimized.
What is the thermal resistance profile of P4KE51CA-E3/54, and how does it impact surge handling?
The P4KE51CA-E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W and junction-to-ambient (RθJA) of 100 °C/W with 10 mm lead length. These values determine how rapidly heat from a 400 W transient dissipates into the PCB copper and surrounding environment. For repetitive surges, thermal derating per Figure 2 must be applied - e.g., at 75 °C ambient, only ~70% of rated PPPM is sustainable without exceeding 175 °C TJ.
Does P4KE51CA-E3/54 meet RoHS and REACH requirements?
Yes, the P4KE51CA-E3/54 carries the "E3" suffix indicating full RoHS compliance per Directive 2011/65/EU and meets Vishay's material categorization standard (document #99912). Lead content is below 1000 ppm, and all substances of very high concern (SVHC) per REACH Annex XIV are absent. The matte tin plating also satisfies JESD 201 Class 1A whisker resistance, ensuring long-term solder joint reliability in vibration-prone applications.
P4KE51CA-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 5.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE51CA-E3/54 FAQ
1.How can I place an order for P4KE51CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE51CA-E3/54 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 P4KE51CA-E3/54 reliable?
The price and inventory of P4KE51CA-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE51CA-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE51CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE51CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE51CA-E3/54?
P4KE51CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE51CA-E3/54 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 P4KE51CA-E3/54?
For technical support, including P4KE51CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE51CA-E3/54 requirements.
6.How does Aetrix verify that P4KE51CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE51CA-E3/54 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 P4KE51CA-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE51CA-E3/54?
All P4KE51CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE51CA-E3/54, 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 P4KE51CA-E3/54 part is unused and in its original packaging.
Return procedure for P4KE51CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE51CA-E3/54 Tags
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