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Vishay General Semiconductor - Diodes Division P6KE51CA-E3/54
- Part No.:
- P6KE51CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE51CA-E3/54.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,165
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Product details
Overview
P6KE51CA-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on power and signal lines. It features a 51 V breakdown voltage (VBR min/max = 48.5–53.6 V at 1 mA), 43.6 V stand-off voltage (VWM), 70.1 V maximum clamping voltage (VC) at 8.6 A peak pulse current, 600 W peak pulse power rating (10/1000 µs waveform), and DO-15 package with AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P6KE51CA-E3/54 datasheet, P6KE51CA-E3/54 pinout, P6KE51CA-E3/54 application, or P6KE51CA-E3/54 equivalent, key selection criteria include bidirectional clamping capability, low leakage (<1 µA at VWM), fast response time, and compatibility with 100 A IFSM surge current handling in industrial sensor protection and automotive ECUs.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at VWM), then rapidly avalanches below 1 ns to limit transient overvoltage. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance across temperature (-55 °C to +175 °C).
The bidirectional configuration enables symmetric clamping on AC-coupled or floating lines without polarity constraints. With 20 °C/W junction-to-lead thermal resistance and 5.0 W steady-state power dissipation at TL = 75 °C, it supports robust thermal management in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 48.5 V / 53.6 V at 1 mA - defines reliable avalanche initiation range for bidirectional clamping |
| VWM | 43.6 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 70.1 V at 8.6 A (10/1000 µs) - peak clamped voltage seen by protected circuit during surge |
| PPPM | 600 W - surge energy absorption capacity per single transient event |
| IPPM | 8.6 A - maximum non-repetitive surge current the device can safely clamp |
| TJ max. | +175 °C - extended junction temperature rating enabling use in under-hood automotive environments |
| Package | DO-15 (DO-204AC) - industry-standard axial leaded package with UL 94 V-0 molded epoxy |
Pinout & Package
DO-15 (DO-204AC) package: axial-leaded, cylindrical epoxy-molded case with matte tin-plated leads; no polarity marking for bidirectional types; RoHS-compliant (E3 suffix); 0.432 g unit weight; 13" paper tape and reel delivery (54 mm reel width, 4000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between leads - either terminal serves as cathode or anode depending on transient polarity |
| Lead 1 / Lead 2 | Current path terminals | Direct connection to PCB traces; requires ≥2.5 mm creepage/clearance for 43.6 V working voltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling (-55 °C to +175 °C) |
| 600 W peak pulse power (10/1000 µs) | Withstands repetitive 0.01% duty cycle surges without degradation in automotive load-dump or inductive switching events |
| AEC-Q101 qualified (HE3 variant; E3 is commercial grade) | P6KE51CA-E3/54 meets stress test requirements for automotive electronics - validated for temperature cycling, HTRB, and surge life |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage exposure to downstream ICs such as CAN transceivers or microcontrollers during ESD/EFT events |
| UL 94 V-0 flammability rating | Molding compound self-extinguishes within 10 seconds after flame removal - critical for safety-critical industrial control panels |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protects LIN bus and sensor supply lines from load dump (ISO 7637-2 Pulse 5a) and alternator ripple in vehicle body electronics. IC Role / Device Role / Timing Role: Shunt clamping element placed directly at connector entry point to divert >100 V transients away from MCU I/O and level translators. Use Value: Limits voltage to ≤70.1 V during 8.6 A surge, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Shields 4–20 mA current loop inputs in programmable logic controllers from field wiring induced surges (IEC 61000-4-5 Level 3). IC Role / Device Role / Timing Role: Primary front-end transient suppressor mounted before precision op-amp input stage and ADC reference buffer. Use Value: Maintains <1 µA leakage at 43.6 V stand-off, avoiding measurement drift while clamping 600 W transients within nanoseconds. |
| Telecom Power Supply Rail Protection | Consumer Appliance Motor Driver Protection |
Use Scenario: Safeguards DC-DC converter inputs in telecom base station power modules against lightning-induced surges on -48 V distribution rails. IC Role / Device Role / Timing Role: Bidirectional rail clamp installed across input capacitor to absorb common-mode transients without polarity concerns. Use Value: Withstands 100 A IFSM half-sine surge (8.3 ms), ensuring survival during repeated lightning strike simulations. |
Use Scenario: Suppresses back-EMF spikes generated by brushed DC motors in smart home appliances (e.g., washing machine drum drive). IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp inductive kickback before reaching H-bridge MOSFETs. Use Value: Fast <1 ns response prevents VDS overshoot beyond MOSFET BVDSS rating, eliminating need for snubber RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51CA | Surface-mount SMB package (vs. axial DO-15); same VBR (48.5–53.6 V), identical VC (70.1 V), but lower IPPM (7.5 A) | Better suited for high-density PCBs where through-hole mounting is impractical; less effective for high-energy surges requiring >8.6 A handling | Select SMBJ51CA when board space is constrained and surge energy remains within 500 W envelope. |
| 1.5KE51CA | Higher PPPM (1500 W), larger DO-201 package; same VBR, VWM, and VC; higher IPPM (22.5 A) | Required for severe industrial environments (e.g., factory floor motor drives) where 600 W is insufficient | Choose 1.5KE51CA when system-level surge testing exceeds IEC 61000-4-5 Level 4 (4 kV line-earth) or ISO 7637-2 Pulse 5b. |
Compared with SMBJ51CA and 1.5KE51CA, P6KE51CA-E3/54 delivers optimal balance of cost, size, and 600 W surge capability for mid-tier automotive and industrial applications - offering proven AEC-Q101 compatibility in a legacy-qualified through-hole form factor without over-engineering.
Availability
P6KE51CA-E3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC analog inputs, telecom power supplies, and consumer appliance motor drivers requiring stable component supply and long-lifecycle support.
Supply support for P6KE51CA-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, efficiency, and application-specific performance.
The P6KE series targets cost-sensitive yet robust transient suppression in commercial and automotive systems, delivering high-surge capability in standardized axial packages for easy integration into legacy and new designs.
FAQ
What is the breakdown voltage tolerance for P6KE51CA-E3/54?
The P6KE51CA-E3/54 has a specified breakdown voltage range of 48.5 V to 53.6 V at 1 mA test current, representing ±5.5% tolerance around the nominal 51 V rating. This tight VBR window ensures consistent clamping behavior across production lots and temperature extremes, critical for protecting 48 V nominal systems where overvoltage margin is limited. The P6KE51CA-E3/54 maintains this specification across its full operating junction temperature range.
Is P6KE51CA-E3/54 suitable for automotive applications?
Yes - while the P6KE51CA-E3/54 carries the commercial-grade E3 suffix, its underlying design is AEC-Q101 qualified (as confirmed in the HE3 variant documentation), and its electrical parameters (175 °C TJ max, 100 A IFSM, low leakage) meet core automotive requirements. It is widely deployed in body control modules and sensor interfaces where full AEC-Q101 certification is not mandated by Tier 1s but robustness is essential. The P6KE51CA-E3/54 provides proven field reliability in these roles.
How does the clamping voltage of P6KE51CA-E3/54 compare to its breakdown voltage?
The P6KE51CA-E3/54 clamps to 70.1 V at its rated 8.6 A peak pulse current, yielding a clamping ratio (VC/VBR) of approximately 1.39 - well within the typical 1.3–1.4 range for 600 W DO-15 TVS diodes. This ratio reflects low dynamic impedance during avalanche conduction, ensuring minimal overvoltage stress on downstream components like CAN transceivers or op-amps. The P6KE51CA-E3/54 achieves this without external biasing or complex layout.
What is the maximum allowable reverse leakage current for P6KE51CA-E3/54 at VWM?
At its 43.6 V stand-off voltage (VWM), the P6KE51CA-E3/54 exhibits a maximum reverse leakage current of 1.0 µA at 25 °C ambient. This ultra-low leakage preserves signal integrity in high-impedance analog circuits and avoids unnecessary power drain in battery-operated systems. The P6KE51CA-E3/54 maintains leakage below 5 µA even at 125 °C junction temperature, supporting operation in thermally demanding enclosures.
Can P6KE51CA-E3/54 be used in bidirectional AC signal lines?
Yes - the "CA" suffix explicitly denotes bidirectional construction, meaning the P6KE51CA-E3/54 provides symmetrical clamping for both positive and negative transients without polarity sensitivity. It is routinely applied on RS-485 differential pairs, audio input transformers, and AC-coupled sensor outputs where voltage excursions occur in either direction. The P6KE51CA-E3/54 requires no orientation during placement and delivers identical VC in both directions.
P6KE51CA-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, 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):
- 8.6A
- Power - Peak Pulse:
- 600W
- 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-204AC (DO-15)
P6KE51CA-E3/54 FAQ
1.How can I place an order for P6KE51CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE51CA-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 P6KE51CA-E3/54 reliable?
The price and inventory of P6KE51CA-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 P6KE51CA-E3/54 is usually 5 days.
3.What payment methods are accepted for P6KE51CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE51CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE51CA-E3/54?
P6KE51CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE51CA-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 P6KE51CA-E3/54?
For technical support, including P6KE51CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE51CA-E3/54 requirements.
6.How does Aetrix verify that P6KE51CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All P6KE51CA-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 P6KE51CA-E3/54 meets industry standards.
7.What is the process for return or replacement of P6KE51CA-E3/54?
All P6KE51CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE51CA-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 P6KE51CA-E3/54 part is unused and in its original packaging.
Return procedure for P6KE51CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE51CA-E3/54 Tags
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