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Vishay General Semiconductor - Diodes Division P4KE51CHE3/54
- Part No.:
- P4KE51CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE51CHE3/54.pdf
- Description:
- TVS DIODE 41.3VWM 73.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,349
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Product details
Overview
P4KE51CHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 43.6 V stand-off voltage (VWM), 48.5–53.6 V breakdown voltage (VBR) at 1 mA, 70.1 V maximum clamping voltage (VC) at 5.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the P4KE51CHE3/54 datasheet, P4KE51CHE3/54 pinout, P4KE51CHE3/54 application, or P4KE51CHE3/54 equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, thermal derating above 25 °C, AEC-Q101 qualification status, and lead-free RoHS-compliant HE3 suffix marking for automotive-grade reliability.
Technical Context
This device operates as a silicon avalanche diode that enters controlled breakdown when reverse voltage exceeds VBR, diverting transient energy to ground while limiting voltage across the protected circuit to ≤70.1 V. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 μA at 43.6 V), and it sustains 40 A non-repetitive forward surge current per 8.3 ms half-sine wave.
Thermal performance is defined by RθJL = 66 °C/W (junction-to-lead) and RθJA = 100 °C/W (junction-to-ambient, LLead = 10 mm), enabling reliable operation up to TJ = 175 °C. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, distinguishing it from commercial-grade E3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 43.6 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for normal circuit operation. |
| VBR (Breakdown Voltage) | 48.5–53.6 V at 1 mA - Tight 5.1 V window ensures predictable turn-on threshold under transient stress. |
| VC (Clamping Voltage) | 70.1 V at IPPM = 5.7 A - Limits peak voltage seen by downstream ICs during 10/1000 μs surge events. |
| PPPM (Peak Pulse Power) | 400 W - Sustains standardized lightning/surge immunity per IEC 61000-4-5 Level 3 (1 kV/2 Ω) without failure. |
| TJ max. | 175 °C - Enables use in under-hood automotive environments and high-temperature industrial enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TC, and HAST. |
| Package | DO-41 (DO-204AL) - Standard axial-leaded through-hole package compatible with legacy PCB assembly and manual repair. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; cathode indicated by color band on body end. Leads conform to J-STD-002 and JESD 22-B102 solderability standards; 275 °C max solder dip for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (banded end opposite) | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional configuration; carries surge current to GND during clamping. |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to protected line (e.g., 48 V supply rail); avalanche breakdown initiates here when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; eliminates surface contamination-induced drift in harsh environments. |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive subsystems without external heat sinking. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive under-hood applications including engine control modules and battery management systems. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients (e.g., load dump), improving protection margin for sensitive 5 V/3.3 V logic. |
| RoHS-compliant, matte tin plating | Enables lead-free reflow and hand-soldering compatibility while meeting global environmental compliance mandates. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects microcontroller I/O pins and CAN transceiver power rails from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V/24 V supply rail and ground, clamping surges before they reach LDOs and MCU VDD pins. Use Value: Clamps to ≤70.1 V within nanoseconds, preserving 40 V-rated input protection circuits and preventing latch-up in 32-bit automotive MCUs. |
Use Scenario: Shields 24 V digital input optocoupler front-end from field-wiring induced surges (IEC 61000-4-4 EFT) and inductive kickback. IC Role / Device Role / Timing Role: Standoff-connected TVS on dry-contact input line, conducting only during >48.5 V transients to shunt energy to chassis ground. Use Value: Withstands 400 W pulses without degradation, enabling >100,000-cycle reliability in factory automation sensors and valve controllers. |
| Telecom Base Station Power Supply | Medical Infusion Pump Motor Driver |
Use Scenario: Guards +48 V telecom rectifier output against lightning-induced surges (IEC 61000-4-5) entering via long feeder cables. IC Role / Device Role / Timing Role: Primary-level TVS on DC distribution bus, coordinated with upstream MOVs and downstream ceramic capacitors for multi-stage clamping. Use Value: 70.1 V clamping ensures downstream DC/DC converters (rated 60 V input) remain within safe operating area during 10/1000 μs threats. |
Use Scenario: Safeguards H-bridge gate drivers from back-EMF spikes generated by brushed DC motor commutation in portable medical devices. IC Role / Device Role / Timing Role: Unidirectional TVS across motor terminals, clamping negative flyback voltage to protect MOSFET source-drain junctions. Use Value: 175 °C max junction temperature supports sealed enclosure operation; AEC-Q101 qualification adds confidence for safety-critical life-support equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | Surface-mount SMB package (vs. axial DO-41); same VWM (43.6 V), VC = 87.1 V at 4.6 A; 600 W PPPM rating. | Requires PCB redesign for SMT placement; better suited for space-constrained consumer electronics vs. serviceable industrial boards. | Select SMBJ51A when board real estate is limited and automated assembly is used; verify layout clearance for higher VC margin. |
| 1.5KE51A | Same DO-41 package but higher 1500 W PPPM rating; VWM = 43.6 V, VC = 73.5 V at 20.3 A; no AEC-Q101 qualification. | Commercial-grade only; suitable for non-automotive industrial use where higher surge margin is needed but qualification isn't required. | Choose 1.5KE51A for cost-sensitive, high-energy surge environments (e.g., outdoor power supplies) where AEC-Q101 is not mandated. |
Compared with SMBJ51A and 1.5KE51A, P4KE51CHE3/54 uniquely balances AEC-Q101 qualification, proven DO-41 through-hole reliability, and precise 400 W/70.1 V clamping - making it optimal for automotive Tier-1 suppliers and industrial OEMs requiring traceable, qualified components without SMT conversion.
Availability
P4KE51CHE3/54 is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC input protection, and telecom power rail hardening requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for P4KE51CHE3/54 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 automotive-grade validation.
The P4KE51CHE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in automotive, industrial, and telecom infrastructure where repeatable clamping performance and qualification rigor are mandatory.
FAQ
What does the "HE3" suffix mean in P4KE51CHE3/54?
The HE3 suffix in P4KE51CHE3/54 indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. Unlike the commercial E3 variant, P4KE51CHE3/54 is fully validated for automotive under-hood applications, including temperature cycling, humidity testing, and high-temperature operating life - critical for engine control and battery management systems.
How does P4KE51CHE3/54 differ from P4KE51A-E3/54?
P4KE51CHE3/54 is AEC-Q101 qualified and uses the HE3 suffix, whereas P4KE51A-E3/54 is commercial grade only (E3 suffix). Both share identical electrical specs - VWM = 43.6 V, VBR = 48.5–53.6 V, VC = 70.1 V - but only P4KE51CHE3/54 meets automotive stress test requirements. The "C" in P4KE51CHE3/54 denotes unidirectional polarity, consistent with all "A"-suffixed parts in the series.
Can P4KE51CHE3/54 be used in bidirectional configurations?
No - P4KE51CHE3/54 is strictly unidirectional, as confirmed by its "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P4KE51CA). Using P4KE51CHE3/54 in reverse-biased AC signal paths would result in forward conduction and failure; always match polarity suffix to circuit topology.
What is the maximum allowable lead temperature during soldering for P4KE51CHE3/54?
The maximum solder dip temperature for P4KE51CHE3/54 is 275 °C for up to 10 seconds, per JESD 22-B106. This specification applies to wave soldering and manual tinning; exceeding this limit risks internal bond wire damage or epoxy delamination. Matte tin-plated leads ensure compatibility with both SnPb and lead-free processes per J-STD-002.
Is P4KE51CHE3/54 suitable for protecting 3.3 V or 5 V logic lines?
No - P4KE51CHE3/54 is not appropriate for direct protection of 3.3 V or 5 V logic lines due to its 43.6 V stand-off voltage and 70.1 V clamping level, which far exceed safe limits for low-voltage ICs. It is intended for 24 V/48 V power rails and higher-voltage analog/signal paths; use SMAJ5.0A or similar low-VWM TVS for logic-level protection.
P4KE51CHE3/54 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:
- 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):
- 5.4A
- Power - Peak Pulse:
- 400W
- 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-204AL (DO-41)
P4KE51CHE3/54 FAQ
1.How can I place an order for P4KE51CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE51CHE3/54 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 P4KE51CHE3/54 reliable?
The price and inventory of P4KE51CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE51CHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE51CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE51CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE51CHE3/54?
P4KE51CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE51CHE3/54 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 P4KE51CHE3/54?
For technical support, including P4KE51CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE51CHE3/54 requirements.
6.How does Aetrix verify that P4KE51CHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE51CHE3/54 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 P4KE51CHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE51CHE3/54?
All P4KE51CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE51CHE3/54, 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 P4KE51CHE3/54 part is unused and in its original packaging.
Return procedure for P4KE51CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE51CHE3/54 Tags
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