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Vishay General Semiconductor - Diodes Division P6KE51CHE3/54
- Part No.:
- P6KE51CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE51CHE3/54.pdf
- Description:
- TVS DIODE 41.3VWM 73.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,532
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Product details
Overview
P6KE51CHE3/54 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (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 P6KE51CHE3/54 datasheet, P6KE51CHE3/54 pinout, P6KE51CHE3/54 application, or P6KE51CHE3/54 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, DO-15 mechanical compatibility, and verified 175 °C junction temperature rating for under-hood and motor-control environments.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche breakdown in both polarities, enabling robust ESD and lightning-induced transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and low incremental surge resistance, critical for repeatable clamping performance across thermal cycles.
The P6KE51CHE3/54 is rated for 600 W peak pulse power (10/1000 μs), 5.0 W steady-state power dissipation on infinite heatsink, and withstands 100 A non-repetitive forward surge (8.3 ms half-sine). Thermal resistance is 20 °C/W junction-to-lead, supporting reliable operation up to TJ = 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43.6 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 36 V nominal systems. |
| VBR (min/max) | 48.5 V / 53.6 V at 1 mA - guaranteed avalanche onset range; ensures predictable turn-on across manufacturing lot and temperature. |
| VC @ IPPM | ≤70.1 V at 8.6 A - clamped voltage during 600 W transient; limits downstream IC stress to sub-75 V during ISO 7637-2 Pulse 1/2b events. |
| PPPM | 600 W (10/1000 μs) - standardized surge energy handling; validated per IEC 61000-4-5 Level 3 (1 kV/2 kV line-earth). |
| IFSM | 100 A (8.3 ms half-sine) - single-event surge current limit; supports protection of 12 V/24 V automotive power rails against load dump. |
| TJ max | 175 °C - maximum junction temperature; enables placement near heat sources (e.g., motor drivers, power converters) without derating. |
| Package | DO-204AC (DO-15) - industry-standard axial-leaded package with 0.300" lead spacing; compatible with legacy through-hole assembly and wave soldering (275 °C, 10 s). |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case meeting UL 94 V-0; no polarity marking (bi-directional); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | No functional distinction between leads; either terminal serves as input/output for transient energy diversion in AC or floating DC lines. |
| Lead 1 | Current path to PCB ground or return plane | Provides low-inductance path for surge current to shunt into system ground; lead length directly impacts clamping effectiveness (L = 0.375" typical). |
| Lead 2 | Current path to protected node | Connected in parallel to sensitive circuit node (e.g., CAN H/L, RS-485 A/B); clamps voltage difference between node and reference. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge lifetime testing - suitable for engine control, body electronics, and ADAS sensors. |
| Glass passivated junction | Eliminates surface contamination risk and stabilizes VBR drift over time and humidity exposure - critical for long-life industrial deployments. |
| 600 W peak pulse power (10/1000 μs) | Handles high-energy transients such as ISO 7637-2 Pulse 5a (load dump) without degradation - protects MOSFET gates and microcontroller I/Os. |
| Fast response time (<1 ns) | Clamps before induced transients propagate beyond first IC stage - preserves signal integrity on high-speed interfaces like LIN or SENT. |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability - required for Tier 1 automotive BOMs and industrial safety certifications. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting wheel speed, crankshaft, or oxygen sensor signal lines from inductive switching spikes and battery load dump in 12 V/24 V vehicle architectures. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between sensor output and ECU input, referenced to chassis ground. Use Value: Limits transient voltage to ≤70.1 V during 100 A surges, preventing damage to analog front-end amplifiers and ADC inputs while maintaining signal fidelity. |
Use Scenario: Safeguarding differential data lines in factory automation PLCs and motor drives exposed to EFT/burst noise and ground potential differences. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS pair (e.g., P6KE51CHE3/54 across A–B, and to GND) on RS-485 transceiver outputs. Use Value: Clamps common-mode and differential transients simultaneously without polarity constraints, enabling robust communication in electrically noisy plant floors. |
| Consumer Power Adapter Input | Telecom DSL Line Protection |
|
Use Scenario: Secondary-side surge suppression on 5–24 V DC outputs of wall adapters and USB-C PD chargers subjected to user-handling ESD and cable coupling. IC Role / Device Role / Timing Role: Parallel-connected bi-directional TVS between VOUT and GND, upstream of LDO or DC-DC converter. Use Value: Absorbs 600 W transients without latch-up or parametric shift, preserving output regulation and preventing brownout resets in connected devices. |
Use Scenario: Primary protection for ADSL/VDSL line cards against lightning-induced surges entering via telephone wiring in residential gateways and DSLAMs. IC Role / Device Role / Timing Role: First-stage protector on tip/ring lines before hybrid transformer and line driver ICs. Use Value: Withstands repeated 10/1000 μs surges up to 600 W while maintaining <1.0 μA leakage at 43.6 V - avoids false triggering and signal attenuation. |
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 (SMB) package; same 51 V bi-directional rating but 600 W rating at 10/1000 μs; lower RθJA (50 °C/W vs. 75 °C/W). | Better suited for surface-mount layouts with space constraints; requires rework of footprint and stencil design. | Select SMBJ51CA when board real estate is limited and SMT assembly is preferred; verify thermal pad layout for 5.0 W dissipation. |
| 1.5KE51CA | DO-201AD package; identical electrical specs (VWM, VBR, VC, PPPM) but higher 1.5 kW peak power rating and 100 A IFSM. | Over-specified for most 600 W use cases; larger size and higher cost; used where legacy DO-201AD sockets exist. | Choose 1.5KE51CA only if existing tooling mandates DO-201AD or if future-proofing for >600 W surge margins is required. |
Compared with SMBJ51CA and 1.5KE51CA, the P6KE51CHE3/54 delivers optimal balance of AEC-Q101 qualification, DO-15 through-hole compatibility, and proven 600 W surge handling - making it the preferred choice for cost-sensitive, high-volume automotive and industrial designs requiring drop-in replacement of legacy P6KE series.
Availability
P6KE51CHE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 interface hardening, and telecom DSL line protection requiring stable component supply across multi-year production cycles.
Supply support for P6KE51CHE3/54 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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The P6KE series belongs to Vishay's TRANSZORB® TVS family, engineered for cost-effective, high-surge-capability transient suppression in automotive, industrial, and consumer power and signal lines - with AEC-Q101 qualification built into HE3 variants.
FAQ
What does the "HE3" suffix indicate in P6KE51CHE3/54?
The HE3 suffix in P6KE51CHE3/54 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It confirms the device meets automotive reliability standards, including temperature cycling, humidity bias, and surge lifetime testing - distinguishing it from commercial-grade E3 variants. P6KE51CHE3/54 is validated for under-hood and motor-control applications where extended thermal and mechanical stress is expected.
Is P6KE51CHE3/54 unidirectional or bidirectional, and how is polarity identified?
P6KE51CHE3/54 is a bi-directional TVS diode, meaning it provides symmetrical clamping in both voltage polarities - essential for protecting AC-coupled or floating DC lines. Unlike unidirectional P6KE51A variants, it has no cathode band or polarity marking; both leads are functionally identical. This eliminates orientation errors during manual or automated assembly and simplifies layout for differential signal protection.
What is the clamping voltage of P6KE51CHE3/54 at its rated peak pulse current?
The clamping voltage (VC) of P6KE51CHE3/54 is guaranteed ≤70.1 V at its peak pulse current (IPPM) of 8.6 A, measured under the standard 10/1000 μs waveform. This value defines the maximum voltage imposed on protected circuitry during a 600 W transient event. Engineers use this spec to verify that downstream components - such as microcontroller I/O pins or transceiver inputs - remain within their absolute maximum ratings during surge conditions.
Can P6KE51CHE3/54 replace P6KE51A in an existing design?
No - P6KE51CHE3/54 cannot directly replace unidirectional P6KE51A without circuit review. While both share identical VWM (43.6 V), VBR, and PPPM, the P6KE51A is unidirectional (cathode-marked) and conducts forward current, whereas P6KE51CHE3/54 is bi-directional and blocks in both directions until breakdown. Substitution requires confirming that reverse conduction in the original design is not relied upon (e.g., in DC-biased signal paths).
What is the maximum operating temperature for P6KE51CHE3/54, and how does it affect layout?
P6KE51CHE3/54 has a maximum junction temperature (TJ) of 175 °C, enabling operation in high-ambient environments like engine compartments or enclosed industrial enclosures. To maintain reliability, PCB layout must minimize thermal resistance: use ≥10 mm² copper pour connected to both leads, avoid narrow traces, and ensure lead length ≤0.375" (9.5 mm) as specified in the datasheet. Exceeding thermal limits accelerates leakage growth and reduces surge lifetime.
P6KE51CHE3/54 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 41.3V
- Voltage - Breakdown (Min):
- 45.9V
- Voltage - Clamping (Max) @ Ipp:
- 73.5V
- Current - Peak Pulse (10/1000µs):
- 8.2A
- 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)
P6KE51CHE3/54 FAQ
1.How can I place an order for P6KE51CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE51CHE3/54 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 P6KE51CHE3/54 reliable?
The price and inventory of P6KE51CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE51CHE3/54 is usually 5 days.
3.What payment methods are accepted for P6KE51CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE51CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE51CHE3/54?
P6KE51CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE51CHE3/54 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 P6KE51CHE3/54?
For technical support, including P6KE51CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE51CHE3/54 requirements.
6.How does Aetrix verify that P6KE51CHE3/54 is sourced from the original manufacturer or authorized distributors?
All P6KE51CHE3/54 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 P6KE51CHE3/54 meets industry standards.
7.What is the process for return or replacement of P6KE51CHE3/54?
All P6KE51CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE51CHE3/54, 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 P6KE51CHE3/54 part is unused and in its original packaging.
Return procedure for P6KE51CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE51CHE3/54 Tags
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