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Vishay General Semiconductor - Diodes Division P6KA18HE3/54
- Part No.:
- P6KA18HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KA18HE3/54.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,602
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Product details
Overview
P6KA18HE3/54 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for primary overvoltage protection of power rails and signal lines. It features a 16.2 V minimum breakdown voltage (VBR), 14.5 V maximum stand-off voltage (VWM), 26.5 V clamping voltage (VC) at 22.6 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - deployed in automotive engine control units to protect MOSFET gate drivers from load dump transients.
For engineers reviewing the P6KA18HE3/54 datasheet, P6KA18HE3/54 pinout, P6KA18HE3/54 application, or P6KA18HE3/54 equivalent, this page delivers verified electrical parameters, DO-204AC package dimensions, AEC-Q101 qualification status, thermal derating behavior, and direct alternatives with documented clamping and leakage differences.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable breakdown characteristics under high-temperature stress (TJ = 185 °C). Its unidirectional polarity and low incremental surge resistance enable fast clamping response (<1 ps typical) during inductive switching events.
The device complies with ANSI/IEEE C62.35 for transient suppression and is rated for repetitive 10/1000 µs waveforms at 0.01 % duty cycle. Its 1.0 mA test current (IT) and 1.0 µA max reverse leakage at VWM support precision hold-off in low-power sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14.5 V maximum - ensures reliable blocking of normal 12 V automotive supply ripple without leakage-induced power loss |
| VBR (min/max) | 16.2 V / 19.8 V at 1.0 mA - defines precise turn-on threshold for controlled clamping before downstream IC damage |
| VC @ IPPM | 26.5 V at 22.6 A - limits voltage seen by protected MOSFETs to safe levels during 600 W transient events |
| IPPM | 22.6 A (10/1000 µs) - quantifies surge current handling capacity without degradation under standardized lightning/inductive test conditions |
| TJ max | +185 °C - enables placement near hot engine compartment components without derating penalties |
| Leakage @ VWM | 1.0 µA maximum at 25 °C - preserves battery life in always-on automotive modules |
| AEC-Q101 | Qualified - confirms reliability for automotive electronic control units per stress-test requirements |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, epoxy-molded case with matte tin-plated leads; cathode indicated by color band; UL 94 V-0 rated molding compound; RoHS-compliant (HE3 suffix); JESD 201 Class 2 whisker tested.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side return path; enables unidirectional clamping to GND |
| Cathode | Current exit point during forward conduction; marked with band | Connected to protected line (e.g., 12 V rail); conducts only when line exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 5a load dump surges without failure in 12 V systems |
| 185 °C junction rating | Eliminates thermal derating in under-hood ECU designs operating at ambient >125 °C |
| Low clamping ratio (VC/VBR ≈ 1.64) | Minimizes overvoltage margin required for protected MOSFET VDS rating selection |
| AEC-Q101 qualification | Validates robustness across temperature cycling, humidity, and mechanical shock for automotive production use |
| 1.0 µA max reverse leakage @ VWM | Reduces standby current drain in always-on telematics modules below 10 µA system budget |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protecting 12 V supply rail of microcontroller and driver ICs against alternator load dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery feed and local LDO input, conducting within nanoseconds of overvoltage onset. Use Value: Limits rail voltage to ≤26.5 V during 600 W surges, preventing latch-up or oxide breakdown in 3.3 V/5 V logic supplies. | Use Scenario: Safeguarding 24 V DC digital input circuitry from field-wiring inductive kickback in factory automation panels. IC Role / Device Role / Timing Role: Primary overvoltage shunt on optocoupler input side, triggered before internal Zener or series resistor fails. Use Value: Clamps 24 V line to 26.5 V during 100 ms inductive spikes, preserving optocoupler CTR and enabling <1 µs response to PLC scan cycles. |
| Automotive Body Control Module (BCM) | Telecom Power Supply Front-End |
Use Scenario: Shielding LIN bus transceiver power pins from battery reversal and jump-start induced transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on VCC pin of LIN transceiver, absorbing energy while maintaining <14.5 V quiescent operation. Use Value: Prevents false wake-up or reset due to 200 V/100 ns spikes, supporting ASAM MCD-2 MC compliance for diagnostic communication. | Use Scenario: Secondary surge protection on +48 V telecom rectifier output feeding PoE midspans and baseband processors. IC Role / Device Role / Timing Role: Fast-clamp element downstream of MOV-based primary protection, handling residual ringwave energy. Use Value: Reduces let-through voltage to <26.5 V after MOV clamping, protecting 50 V-rated DC-DC controllers from cumulative overstress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A-E3/5A | Same DO-214AC package; 18 V nominal VWM; 29.2 V VC @ 20.9 A; 400 W PPPM | Lower peak power rating limits suitability for sustained load dump events in automotive | Select when space-constrained SMD layout requires surface-mount and 400 W suffices |
| 1.5KE18A | DO-201AD package; same 18 V VWM; 29.2 V VC @ 20.9 A; 1500 W PPPM; no AEC-Q101 | Higher power but lacks automotive qualification and high-temp reliability validation | Select for industrial AC/DC front-end where 1500 W margin is critical and AEC-Q101 not required |
Compared with SMAJ18A-E3/5A and 1.5KE18A, P6KA18HE3/54 uniquely combines AEC-Q101 qualification, 185 °C operation, and 600 W capability in the through-hole DO-204AC package - making it optimal for high-reliability automotive power rail protection where thermal stability and qualification traceability are mandatory.
Availability
P6KA18HE3/54 is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC input modules, body control modules, and telecom power supply front-ends requiring stable component supply with full AEC-Q101 documentation and lot-level traceability.
Supply support for P6KA18HE3/54 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, TVS devices, and optoelectronics with emphasis on reliability and high-temperature performance.
The P6KA series belongs to Vishay's PAR® family of high-temperature-stable TVS diodes, engineered specifically for automotive and industrial environments where sustained operation above 150 °C and immunity to thermal runaway are critical design requirements.
FAQ
What is the maximum clamping voltage of the P6KA18HE3/54 under standard test conditions?
The P6KA18HE3/54 has a maximum clamping voltage (VC) of 26.5 V when subjected to its rated peak pulse current of 22.6 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for protected circuits. The P6KA18HE3/54 maintains this clamping performance across its full operating temperature range up to +185 °C junction temperature.
Is the P6KA18HE3/54 qualified for automotive applications?
Yes, the P6KA18HE3/54 is AEC-Q101 qualified, confirming its reliability for automotive electronic systems. It meets stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. The P6KA18HE3/54 is routinely used in engine control units and body control modules where qualification evidence is contractually required.
What package type does the P6KA18HE3/54 use, and what are its key mechanical attributes?
The P6KA18HE3/54 uses the DO-204AC (DO-15) axial package with 9.5 mm body length and 3.6 mm diameter. Its matte tin-plated leads comply with J-STD-002 solderability standards, and the UL 94 V-0 epoxy molding ensures flame resistance. The P6KA18HE3/54 also passes JESD 201 Class 2 whisker testing, supporting long-term reliability in vibration-prone automotive harnesses.
How does the P6KA18HE3/54 differ from the P6KA18A variant?
The P6KA18HE3/54 has a breakdown voltage range of 16.2 V to 19.8 V, while the P6KA18A variant tightens this to 17.1 V–18.9 V. Both share identical VWM (14.5 V), VC (26.5 V / 25.2 V), and packaging. The P6KA18HE3/54 offers broader VBR tolerance for cost-sensitive applications where tighter regulation is unnecessary, whereas P6KA18A suits designs needing tighter clamping consistency.
What is the reverse leakage current specification for the P6KA18HE3/54 at maximum operating temperature?
At 25 °C, the P6KA18HE3/54 exhibits ≤1.0 µA reverse leakage at its 14.5 V stand-off voltage. At TJ = 150 °C, leakage increases to ≤5.0 µA - still well within low-power design budgets. This temperature-dependent behavior is fully characterized in the Vishay datasheet (Doc #88368), and the P6KA18HE3/54 maintains stable leakage performance up to its 185 °C maximum junction rating.
P6KA18HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14.5V
- Voltage - Breakdown (Min):
- 16.2V
- Voltage - Clamping (Max) @ Ipp:
- 26.5V
- Current - Peak Pulse (10/1000µs):
- 22.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KA18HE3/54 FAQ
1.How can I place an order for P6KA18HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KA18HE3/54 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 P6KA18HE3/54 reliable?
The price and inventory of P6KA18HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KA18HE3/54 is usually 5 days.
3.What payment methods are accepted for P6KA18HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KA18HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KA18HE3/54?
P6KA18HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KA18HE3/54 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 P6KA18HE3/54?
For technical support, including P6KA18HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KA18HE3/54 requirements.
6.How does Aetrix verify that P6KA18HE3/54 is sourced from the original manufacturer or authorized distributors?
All P6KA18HE3/54 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 P6KA18HE3/54 meets industry standards.
7.What is the process for return or replacement of P6KA18HE3/54?
All P6KA18HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P6KA18HE3/54, 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 P6KA18HE3/54 part is unused and in its original packaging.
Return procedure for P6KA18HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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