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Vishay General Semiconductor - Diodes Division P6KE51CHE3/73
- Part No.:
- P6KE51CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE51CHE3/73.pdf
- Description:
- TVS DIODE 41.3VWM 73.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,068
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Product details
Overview
P6KE51CHE3/73 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 48.5 V minimum breakdown voltage (VBR), 43.6 V stand-off voltage (VWM), 70.1 V maximum clamping voltage (VC) at 8.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECU power inputs and industrial sensor interfaces.
For engineers reviewing the P6KE51CHE3/73 datasheet, P6KE51CHE3/73 pinout, P6KE51CHE3/73 application, or P6KE51CHE3/73 equivalent, this device is selected for cost-sensitive, AEC-Q101-qualified surge protection where fast response (<1 ns), low clamping ratio (1.61), and 175 °C junction temperature capability are required in space-constrained PCB layouts.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at 43.6 V), then avalanches sharply at ≥48.5 V to divert transient energy away from downstream ICs. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance (Rdyn ≈ 4.1 Ω derived from ΔVC/ΔIPPM).
The device complies with AEC-Q101 stress tests including temperature cycling, HTRB, and surge robustness, and is rated for repetitive 0.01 % duty cycle pulses. Its thermal resistance (RθJL = 20 °C/W) supports reliable operation up to 175 °C junction temperature when mounted on minimum 0.375" lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43.6 V - Maximum continuous reverse working voltage before leakage exceeds 1 µA; sets safe operating margin below breakdown. |
| VBR (min/max) | 48.5 V / 53.6 V at 1 mA - Confirmed avalanche onset range; defines minimum trigger threshold for transient suppression. |
| VC @ IPPM | 70.1 V at 8.6 A - Clamped voltage during 600 W 10/1000 µs surge; determines maximum stress on protected circuitry. |
| PPPM | 600 W - Peak pulse power handling per single transient; validated per Fig. 1 derating curve up to 175 °C. |
| IFSM | 100 A - Non-repetitive forward surge current (8.3 ms half-sine); supports inrush or fault-current events without failure. |
| TJ max | 175 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial environments. |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance; informs heatsinking requirements for sustained power dissipation. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance (HE3 suffix). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., GND or return line); conducts during positive transients when cathode is biased higher. |
| Cathode | Avalanche clamping node | Connected to protected line (e.g., +12 V rail); initiates breakdown when voltage exceeds VBR, shunting surge to anode/GND. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures ±5 % VBR tolerance and stable long-term leakage performance across -55 °C to +175 °C. |
| 600 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 1/2a/5a surges in automotive 12 V systems without degradation. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics per stress test requirements including HTGB, TCT, and surge life. |
| Low clamping ratio (VC/VBR = 1.45 typical) | Minimizes overvoltage exposure to protected MOSFET gates or MCU I/O pins during transient events. |
| Fast response time (<1 ns) | Activates before most IC damage thresholds are exceeded, critical for protecting high-speed interface lines. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: 12 V battery feed to engine control unit exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Shunt clamping element placed between power rail and chassis ground, triggered within <1 ns to limit voltage to ≤70.1 V. Use Value: Prevents gate oxide rupture in protected N-channel high-side switches and preserves MCU reset logic integrity during cold-crank events. |
Use Scenario: 4–20 mA current loop output of pressure sensor interfacing with PLC analog input card in factory automation. IC Role / Device Role / Timing Role: Bidirectional clamp (used in uni-directional configuration with cathode to signal line) limiting induced lightning-induced transients on field wiring. Use Value: Maintains signal accuracy by holding common-mode voltage within ±70 V, avoiding ADC saturation or op-amp latch-up. |
| Consumer Power Adapter Output Protection | Telecom DC Feeder Protection |
|
Use Scenario: Secondary-side 5 V/9 V output of wall adapter subjected to ESD (IEC 61000-4-2) and capacitive coupling noise. IC Role / Device Role / Timing Role: Low-capacitance (≈150 pF at 0 V) uni-directional suppressor tied between VOUT and GND, absorbing sub-100 ns spikes. Use Value: Eliminates need for additional RC filtering while preserving USB/USB-C power negotiation timing margins. |
Use Scenario: -48 V DC feeder line powering remote radio units in 4G/LTE base stations, vulnerable to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Primary-stage TVS in series with fuse, clamping negative-going transients to protect upstream DC/DC converter input stage. Use Value: Enables compliance with ITU-T K.20/21 immunity requirements without increasing board area beyond DO-15 footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | DO-214AA package; 51 V VBR min (same nominal rating); 600 W PPPM; surface-mount; RθJA = 40 °C/W vs. 75 °C/W for P6KE51CHE3/73. | Better suited for automated SMT assembly; less effective in high-ambient-temperature through-hole designs due to higher thermal resistance. | Select SMBJ51A when board space is constrained and reflow compatibility is required; retain P6KE51CHE3/73 for legacy through-hole layouts or high-temperature lead-mounted use. |
| 1.5KE51A | Same DO-204AC package; identical VBR, VWM, VC, and PPPM; commercial-grade (non-AEC-Q101); E3 suffix only (no HE3 qualification). | Lacks AEC-Q101 validation; not approved for automotive under-hood deployment per OEM requirements. | Use 1.5KE51A in cost-driven consumer or industrial non-automotive applications; specify P6KE51CHE3/73 where automotive qualification is mandatory. |
Compared with SMBJ51A and 1.5KE51A, P6KE51CHE3/73 uniquely combines AEC-Q101 qualification, axial-leaded DO-15 packaging, and verified 175 °C operation - making it the only option among the three for production automotive ECUs requiring traceable qualification evidence and through-hole mounting.
Availability
P6KE51CHE3/73 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feeder surge suppression requiring stable component supply and full AEC-Q101 documentation traceability.
Supply support for P6KE51CHE3/73 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, automotive qualification, and high-volume manufacturability.
The P6KE series targets cost-effective, high-surge-capability transient protection for DC power and signal lines in automotive, industrial, and telecom infrastructure - balancing performance, qualification, and ease of integration in legacy through-hole designs.
FAQ
What is the clamping voltage of P6KE51CHE3/73 at its rated peak pulse current?
The P6KE51CHE3/73 has a maximum clamping voltage (VC) of 70.1 V at 8.6 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per Figure 1 in the Vishay datasheet 88369 and defines the upper voltage limit imposed on protected circuitry during a 600 W transient event. The P6KE51CHE3/73 maintains this clamping performance across its qualified temperature range (-55 °C to +175 °C) when properly mounted.
Is P6KE51CHE3/73 suitable for automotive applications?
Yes, P6KE51CHE3/73 is AEC-Q101 qualified (HE3 suffix), tested for temperature cycling, high-temperature reverse bias, and surge robustness per automotive stress requirements. Its 175 °C maximum junction temperature, glass-passivated junction, and UL 94 V-0 molding compound make it appropriate for under-hood and body-control module deployments. The P6KE51CHE3/73 meets OEM requirements for transient protection in 12 V and 24 V vehicle electrical systems.
How does the HE3 suffix differ from E3 in P6KE51CHE3/73?
The HE3 suffix in P6KE51CHE3/73 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. In contrast, E3-only variants (e.g., P6KE51AE3/73) are RoHS-compliant but lack AEC-Q101 validation and meet only JESD 201 Class 1A. The P6KE51CHE3/73 therefore provides documented automotive reliability assurance that the standard E3 version does not offer.
What is the standoff voltage rating for P6KE51CHE3/73?
The standoff voltage (VWM) for P6KE51CHE3/73 is 43.6 V - the maximum DC or RMS voltage that can be continuously applied without exceeding 1 µA reverse leakage current. This value provides a 10.6 % margin below the minimum breakdown voltage (48.5 V), ensuring stable blocking behavior during normal operation while allowing headroom for system tolerances and ripple. The P6KE51CHE3/73 remains fully inactive until transients exceed this threshold.
Can P6KE51CHE3/73 be used in bi-directional configurations?
No, P6KE51CHE3/73 is a uni-directional TVS diode, identifiable by its cathode band marking and specified parameters (VBR, VWM, VC) for reverse-biased operation only. For bi-directional protection, Vishay offers CA-suffixed variants such as P6KE51CA; using P6KE51CHE3/73 in AC or dual-rail applications would require external circuitry and is not recommended. The P6KE51CHE3/73 is optimized for DC rail protection where polarity is fixed.
P6KE51CHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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)
P6KE51CHE3/73 FAQ
1.How can I place an order for P6KE51CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE51CHE3/73 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 P6KE51CHE3/73 reliable?
The price and inventory of P6KE51CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE51CHE3/73 is usually 5 days.
3.What payment methods are accepted for P6KE51CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE51CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE51CHE3/73?
P6KE51CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE51CHE3/73 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 P6KE51CHE3/73?
For technical support, including P6KE51CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE51CHE3/73 requirements.
6.How does Aetrix verify that P6KE51CHE3/73 is sourced from the original manufacturer or authorized distributors?
All P6KE51CHE3/73 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 P6KE51CHE3/73 meets industry standards.
7.What is the process for return or replacement of P6KE51CHE3/73?
All P6KE51CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE51CHE3/73, 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 P6KE51CHE3/73 part is unused and in its original packaging.
Return procedure for P6KE51CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE51CHE3/73 Tags
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