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Vishay General Semiconductor - Diodes Division P6KE51CAHE3/54
- Part No.:
- P6KE51CAHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE51CAHE3/54.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,583
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Product details
Overview
P6KE51CAHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on signal or power lines. It features 600 W peak pulse power (10/1000 μs), 43.6 V stand-off voltage (VWM), 48.5–53.6 V breakdown voltage (VBR at 1 mA), and clamps to ≤70.1 V at 8.6 A peak pulse current - deployed in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P6KE51CAHE3/54 datasheet, P6KE51CAHE3/54 pinout, P6KE51CAHE3/54 application, or P6KE51CAHE3/54 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-15 mechanical compatibility, thermal resistance (RθJA = 75 °C/W), and compliance with UL 497B for telecom and automotive transient protection systems.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both polarities, enabling robust ESD and lightning-induced surge suppression without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, while the DO-15 package supports manual or automated through-hole assembly with matte tin-plated leads compliant to J-STD-002.
Rated for -55 °C to +175 °C operating junction temperature and qualified to AEC-Q101, the P6KE51CAHE3/54 delivers repeatable clamping performance under repetitive 0.01% duty cycle transients. Its 20 °C/W junction-to-lead thermal resistance enables effective heat dissipation during high-current pulses, and its 1.0 μA max reverse leakage at VWM minimizes standby power loss in always-on circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43.6 V - maximum continuous reverse working voltage before conduction begins; defines safe operating margin below breakdown |
| VBR (min/max) | 48.5 V / 53.6 V at 1 mA - guaranteed avalanche onset range; ensures predictable clamping threshold across production lots |
| VC @ IPPM | ≤70.1 V at 8.6 A - maximum clamped voltage during 10/1000 μs surge; determines protected circuit's worst-case overvoltage exposure |
| PPPM | 600 W - peak pulse power handling per 10/1000 μs waveform; defines transient energy absorption capacity |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance; sets derating requirement above 25 °C ambient for sustained reliability |
| TJ max | +175 °C - maximum junction temperature; enables operation in under-hood automotive or high-temperature industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JEDEC standard |
Pinout & Package
Package: DO-15 (DO-204AC), axial-leaded, molded epoxy case meeting UL 94 V-0 flammability rating; leads are matte tin plated, solderable per J-STD-002 and JESD 22-B102, with no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Conducts during negative-going surges; forms symmetrical clamping path with cathode |
| Cathode | Transient current entry (positive polarity) | Conducts during positive-going surges; identical electrical behavior to anode due to bidirectional design |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity in industrial control inputs without external series impedance |
| AEC-Q101 qualification | Validates suitability for automotive body electronics, ADAS sensor interfaces, and infotainment power rails |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns), improving protection of sub-20 V logic ICs |
| UL 497B recognition (QVGQ2) | Enables direct use in telecom line interface modules and PoE-powered equipment without additional certification effort |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role: Bidirectional clamping element placed between signal line and ground, absorbing ±100 V transients without polarity concern. Use Value: Prevents latch-up or gate oxide damage in downstream ASICs by limiting voltage excursion to ≤70.1 V during 8.6 A surges. | Use Scenario: Shielding PLC digital input modules from field-wiring induced surges caused by relay coil de-energization or nearby motor switching. IC Role / Device Role: Primary overvoltage clamp on 24 V DC input channels, mounted directly at terminal block entry point. Use Value: Maintains system uptime by preventing false triggering or permanent failure of optocoupler input stages during repetitive 1 kV/μs transients. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHY front-end and DSL line drivers against lightning-induced common-mode surges on twisted-pair copper lines. IC Role / Device Role: Secondary protection stage after gas discharge tube (GDT), providing low-clamp refinement for fast-rising edge transients. Use Value: Reduces residual clamping voltage to <70 V, enabling use of lower-voltage-rated Ethernet magnetics and PHY ICs. | Use Scenario: Suppressing line-to-line and line-to-ground surges entering AC-DC adapters for smart home devices subjected to mains-borne transients. IC Role / Device Role: Across-the-line TVS on primary-side rectifier output, rated for 43.6 V DC working voltage and 600 W surge energy. Use Value: Eliminates need for X-capacitor derating or additional MOV stages while meeting IEC 61000-4-5 Class B immunity requirements. |
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 | Same VWM (43.6 V) and VC (70.1 V), but SMC package (higher IPPM = 12.3 A, lower RθJA = 35 °C/W) | Better suited for higher-density PCB layouts requiring surface-mount assembly and improved thermal performance | Select SMBJ51CA when board space is constrained and thermal management via heatsinking is feasible |
| 1.5KE51CA | Same DO-15 package and VWM/VBR, but higher PPPM = 1500 W (10/1000 μs) and larger case volume | Preferred for legacy designs requiring higher surge margin or where existing footprint allows larger lead spacing | Choose 1.5KE51CA only if system-level testing confirms need for >600 W pulse handling |
Compared with SMBJ51CA and 1.5KE51CA, the P6KE51CAHE3/54 offers optimal balance of AEC-Q101 qualification, UL 497B recognition, and DO-15 through-hole manufacturability - making it ideal for cost-sensitive automotive and industrial applications where proven reliability and supply continuity are prioritized over maximum surge rating or SMT density.
Availability
P6KE51CAHE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line interface surge suppression requiring stable component supply across multi-year production cycles.
Supply support for P6KE51CAHE3/54 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The P6KE series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for cost-effective, high-energy transient suppression in commercial and automotive environments where bidirectional clamping and AEC-Q101 compliance are mandatory.
FAQ
What does the "CA" suffix indicate in P6KE51CAHE3/54?
The "CA" suffix in P6KE51CAHE3/54 denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage clamping for both positive and negative polarity surges. Unlike unidirectional variants (e.g., P6KE51A), it has no cathode marking and conducts identically in either direction - critical for protecting AC-coupled or differential signal lines where polarity is undefined.
Is P6KE51CAHE3/54 suitable for automotive applications?
Yes, P6KE51CAHE3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and body electronics. Its -55 °C to +175 °C operating junction temperature range, glass-passivated junction, and UL 497B recognition confirm suitability for CAN/LIN bus protection, sensor signal conditioning, and power rail clamping in passenger vehicles and commercial fleets.
How does the HE3 suffix differ from E3 in P6KE51CAHE3/54?
The HE3 suffix in P6KE51CAHE3/54 indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas E3 denotes commercial-grade RoHS compliance only. HE3 parts undergo extended stress testing (e.g., HTRB, TC, UHAST) and are intended for automotive and industrial applications requiring certified reliability - confirmed by Vishay's documentation for P6KE51CAHE3/54.
What is the maximum clamping voltage of P6KE51CAHE3/54 under surge conditions?
The maximum clamping voltage (VC) of P6KE51CAHE3/54 is 70.1 V at 8.6 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is guaranteed across temperature and production lot, defining the upper voltage limit imposed on protected circuitry during worst-case transient events - essential for verifying compatibility with 48 V nominal systems and 75 V absolute maximum ratings.
Can P6KE51CAHE3/54 be used in place of P6KE51A?
No, P6KE51CAHE3/54 cannot be used as a direct replacement for unidirectional P6KE51A because their polarity behavior differs fundamentally: P6KE51A clamps only in reverse bias and requires correct cathode orientation, while P6KE51CAHE3/54 clamps symmetrically in both directions with no polarity marking. Substitution would require layout review to ensure no unintended forward conduction paths exist.
P6KE51CAHE3/54 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE51CAHE3/54 FAQ
1.How can I place an order for P6KE51CAHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE51CAHE3/54 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 P6KE51CAHE3/54 reliable?
The price and inventory of P6KE51CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE51CAHE3/54 is usually 5 days.
3.What payment methods are accepted for P6KE51CAHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE51CAHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE51CAHE3/54?
P6KE51CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE51CAHE3/54 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 P6KE51CAHE3/54?
For technical support, including P6KE51CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE51CAHE3/54 requirements.
6.How does Aetrix verify that P6KE51CAHE3/54 is sourced from the original manufacturer or authorized distributors?
All P6KE51CAHE3/54 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 P6KE51CAHE3/54 meets industry standards.
7.What is the process for return or replacement of P6KE51CAHE3/54?
All P6KE51CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE51CAHE3/54, 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 P6KE51CAHE3/54 part is unused and in its original packaging.
Return procedure for P6KE51CAHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE51CAHE3/54 Tags
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