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Vishay General Semiconductor - Diodes Division P4KA27HE3/54
- Part No.:
- P4KA27HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA27HE3/54.pdf
- Description:
- TVS DIODE 21.8VWM 39.1VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,990
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Product details
Overview
P4KA27HE3/54 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, rated for 400 W peak pulse power (10/1000 µs), 24.3–29.7 V breakdown voltage (VBR), and 39.1 V clamping voltage (VC) at 10.2 A peak pulse current. It operates from −65 °C to +185 °C and is AEC-Q101 qualified for engine control units and sensor protection in 12 V automotive systems.
For engineers reviewing the P4KA27HE3/54 datasheet, P4KA27HE3/54 pinout, P4KA27HE3/54 application, or P4KA27HE3/54 equivalent, key selection criteria include its 1.0 V standoff voltage margin (VWM = 21.8 V), low 0.096 %/°C VBR temperature coefficient, 1.5 W steady-state power dissipation, and RoHS-compliant HE3 suffix meeting JESD201 Class 2 whisker resistance.
Technical Context
The P4KA27HE3/54 employs Vishay's patented PAR® construction for stable clamping under repetitive surge conditions and exhibits very fast response time (<1 ns) to transients induced by inductive load switching. Its unidirectional polarity and low incremental surge resistance ensure precise overvoltage protection on DC power rails and signal lines without reverse conduction leakage.
Designed for high-reliability automotive environments, it supports operation up to 185 °C junction temperature and maintains clamping performance across temperature via tight VBR tolerance (±5 %) and low thermal drift. The device complies with ANSI/IEEE C62.35 standards for transient suppression and is validated for 40 A non-repetitive forward surge (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 400 W - sustains automotive load-dump surges without degradation |
| Breakdown Voltage VBR | 24.3–29.7 V at 1.0 mA - ensures reliable triggering above nominal 24 V rail |
| Clamping Voltage VC | 39.1 V at 10.2 A - limits downstream IC stress during ISO 7637-2 Pulse 5a events |
| Standoff Voltage VWM | 21.8 V - provides 10 % margin above 24 V system nominal, preventing false triggering |
| Junction Temperature Range | −65 °C to +185 °C - enables under-hood deployment in modern engine compartments |
| Surge Current IPPM | 10.2 A (10/1000 µs) - meets SAE J1113-11 Class III immunity requirements |
| Temperature Coefficient of VBR | 0.096 %/°C - minimizes voltage shift across wide ambient ranges |
Pinout & Package
Package: DO-204AL (DO-41), molded epoxy case with matte tin-plated leads; cathode denoted by color band; UL 94 V-0 rated; RoHS-compliant HE3 suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC return path for clamped surge current | Connected to ground or low-impedance return plane to sink transient energy |
| Cathode | Protected line input / anode of internal PN junction | Connected to line being protected (e.g., 24 V supply rail or sensor output) |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent clamping performance over 1000+ surge cycles without parameter drift |
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock |
| Low incremental surge resistance | Reduces VC overshoot during fast-rising transients (e.g., ISO 16750-2 Pulse 4a) |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in long-life automotive modules (>15 years) |
| 400 W peak pulse rating (10/1000 µs) | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 24 V commercial vehicles |
Applications
| Engine Control Unit (ECU) Power Input | 24 V CAN Transceiver Protection |
|---|---|
Use Scenario: Protects ECU main 24 V supply against alternator load dump and battery disconnect transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V rail and chassis ground to clamp surges before they reach LDOs and microcontrollers. Use Value: Clamps to 39.1 V at 10.2 A, limiting stress on downstream 40 V-rated regulators and ensuring ASIL-B compliance. |
Use Scenario: Shields high-speed CAN FD transceivers from coupled noise on vehicle harnesses. IC Role / Device Role / Timing Role: Placed on CAN_H and CAN_L lines near connector entry to suppress ESD and burst transients per ISO 10605. Use Value: Low capacitance (typ. <100 pF) avoids signal integrity degradation while providing 39.1 V clamping at 10.2 A. |
| Commercial Vehicle Sensor Interface | Truck Body Control Module (BCM) Inputs |
Use Scenario: Guards analog outputs of pressure/temperature sensors exposed to relay coil back-EMF in cab wiring. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-sensor output line to absorb inductive spikes during solenoid actuation. Use Value: Fast response (<1 ns) prevents latch-up in 3.3 V ADC front-ends; 185 °C max TJ supports under-dash mounting. |
Use Scenario: Protects discrete inputs (e.g., door switch, lamp feedback) in BCMs subjected to jump-start and reverse-battery events. IC Role / Device Role / Timing Role: Installed on each input line with series resistor to limit current into protected GPIO pins. Use Value: 21.8 V VWM allows safe operation across full 18–32 V truck battery range while blocking false triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24AHE3/52 | Lower PPPM (400 W same), but higher VBR min (25.6 V), tighter VC (38.9 V), SMB package (smaller footprint) | Preferred for space-constrained PCBs where thermal mass is managed externally | Select when board area is critical and 24 V nominal system requires tighter VBR tolerance |
| 1.5KE27A | Same VBR range, but TO-204AA (DO-41) package, no AEC-Q101 qualification, lower TJ max (175 °C) | Acceptable for industrial controls but not certified for automotive under-hood use | Choose only for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with P4KA27HE3/54, SMBJ24AHE3/52 offers identical surge capability in a smaller package but lacks the extended 185 °C junction rating; 1.5KE27A provides functional equivalence for non-automotive applications but omits AEC-Q101 validation and high-temperature reliability testing.
Availability
P4KA27HE3/54 is available at Aetrix Electronics and suitable for automotive engine management systems, commercial vehicle body control modules, and industrial 24 V power distribution panels requiring stable component supply with full traceability and long-lifecycle support.
Supply support for P4KA27HE3/54 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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The P4KA27HE3/54 belongs to Vishay's automotive TVS diode family designed specifically for AEC-Q101-compliant transient suppression in 12 V and 24 V vehicle electrical systems, emphasizing thermal stability and long-term parametric consistency.
FAQ
What is the clamping voltage of the P4KA27HE3/54 at its rated peak pulse current?
The P4KA27HE3/54 has a maximum clamping voltage (VC) of 39.1 V at 10.2 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream 40 V-rated components. The P4KA27HE3/54 maintains this clamping performance across its full operating temperature range due to its low 0.096 %/°C VBR temperature coefficient.
Is the P4KA27HE3/54 suitable for 24 V automotive systems with load dump protection requirements?
Yes, the P4KA27HE3/54 is explicitly designed for 24 V automotive systems and meets ISO 7637-2 Pulse 5a (load dump) requirements. Its 400 W peak pulse power rating, 21.8 V standoff voltage (VWM), and 39.1 V clamping voltage provide sufficient margin above nominal 24 V rails while suppressing transients up to 60 V. The P4KA27HE3/54 is AEC-Q101 qualified and rated for 185 °C junction temperature, making it suitable for under-hood deployment.
What does the HE3/54 suffix indicate in P4KA27HE3/54?
The HE3 suffix denotes RoHS-compliant, high-reliability automotive grade construction meeting JESD201 Class 2 whisker resistance requirements. The /54 indicates packaging in 13-inch paper tape and reel with a base quantity of 5500 units. This packaging format ensures automated placement compatibility and long-term storage stability. The P4KA27HE3/54 uses matte tin-plated leads solderable per J-STD-002 and JESD22-B102 standards.
How does the P4KA27HE3/54 differ from the P4KA27A variant?
The P4KA27HE3/54 has a breakdown voltage range of 24.3–29.7 V, while the P4KA27A variant is tighter at 25.7–28.4 V. Both share identical package (DO-204AL), power ratings (400 W), and AEC-Q101 qualification. The P4KA27HE3/54 offers broader VBR tolerance for cost-sensitive designs where exact voltage matching is less critical, whereas P4KA27A targets applications needing tighter clamping threshold control. The P4KA27HE3/54 also carries the HE3 reliability enhancements.
Can the P4KA27HE3/54 be used in bidirectional configurations?
No, the P4KA27HE3/54 is unidirectional only, as confirmed in the Vishay datasheet Document Number 88364. Its internal structure and polarity marking (cathode band) are optimized for DC rail protection where reverse conduction is not required. For bidirectional AC or data-line protection, engineers must select a dedicated bidirectional TVS such as the SMAJ24CAHE3/52. Using the P4KA27HE3/54 in reverse-biased mode would result in premature failure due to lack of reverse breakdown specification.
P4KA27HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 21.8V
- Voltage - Breakdown (Min):
- 24.3V
- Voltage - Clamping (Max) @ Ipp:
- 39.1V
- Current - Peak Pulse (10/1000µs):
- 10.2A
- Power - Peak Pulse:
- 400W
- 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-204AL (DO-41)
P4KA27HE3/54 FAQ
1.How can I place an order for P4KA27HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA27HE3/54 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 P4KA27HE3/54 reliable?
The price and inventory of P4KA27HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA27HE3/54 is usually 5 days.
3.What payment methods are accepted for P4KA27HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA27HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA27HE3/54?
P4KA27HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA27HE3/54 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 P4KA27HE3/54?
For technical support, including P4KA27HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA27HE3/54 requirements.
6.How does Aetrix verify that P4KA27HE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KA27HE3/54 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 P4KA27HE3/54 meets industry standards.
7.What is the process for return or replacement of P4KA27HE3/54?
All P4KA27HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA27HE3/54, 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 P4KA27HE3/54 part is unused and in its original packaging.
Return procedure for P4KA27HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KA27HE3/54 Tags
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