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Vishay General Semiconductor - Diodes Division P4KA27AHE3/54
- Part No.:
- P4KA27AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA27AHE3/54.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,361
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Product details
Overview
P4KA27AHE3/54 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, with 25.7 V to 28.4 V breakdown voltage (VBR), 37.5 V clamping voltage (VC) at 10.7 A peak pulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - designed for protecting MOSFETs and sensor signal lines in automotive powertrain control units.
For engineers reviewing the P4KA27AHE3/54 datasheet, P4KA27AHE3/54 pinout, P4KA27AHE3/54 application, or P4KA27AHE3/54 equivalent, key selection criteria include AEC-Q101 qualification, 185 °C maximum junction temperature, low incremental surge resistance, and RoHS-compliant HE3 suffix meeting JESD201 Class 2 whisker test.
Technical Context
The P4KA27AHE3/54 operates as a unidirectional avalanche diode with patented PAR® construction, enabling fast response time (<1 ns) and stable clamping under repetitive transients. Its 1.0 VWM stand-off voltage and 1.0 µA reverse leakage at TJ = 150 °C support reliable operation in high-temperature engine bay environments.
Designed for 10/1000 µs surge waveforms at 0.01% duty cycle, it delivers 10.7 A peak pulse current with 37.5 V clamping while maintaining thermal stability up to 185 °C junction temperature - validated per ANSI/IEEE C62.35 standards and AEC-Q101 stress testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V - defines precise avalanche initiation range for predictable overvoltage protection |
| VC @ IPPM | 37.5 V at 10.7 A - limits downstream voltage stress during 10/1000 µs transients |
| PPPM | 400 W - sustains high-energy surges without failure under defined waveform and duty cycle |
| TJ max. | +185 °C - enables placement near hot components in automotive ECUs without derating |
| VWM | 23.1 V - ensures no conduction during normal 24 V system operation with margin |
| ID @ VWM | 1.0 µA at 23.1 V - minimizes standby power loss in always-on vehicle modules |
| Package | DO-204AL (DO-41) - industry-standard through-hole package compatible with legacy automotive PCB layouts |
Pinout & Package
DO-204AL (DO-41) molded epoxy package with matte tin-plated leads; cathode indicated by color band. Leads meet J-STD-002 and JESD22-B102 solderability requirements; HE3 suffix confirms JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected circuit ground or low-side return path |
| Cathode | Current exit point during reverse-biased clamping | Connected to line being protected (e.g., sensor supply rail or CAN bus) |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables uniform voltage distribution across junction, reducing localized thermal runaway risk |
| AEC-Q101 qualified | Validated for automotive underhood use including temperature cycling, mechanical shock, and humidity testing |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients like load dump or inductive kick |
| RoHS-compliant HE3 suffix | Meets JESD201 Class 2 whisker resistance for long-term reliability in high-vibration environments |
| 10/1000 µs waveform rating | Aligned with ISO 7637-2 Pulse 1, 2a, 3a, and 3b test profiles for automotive EMI immunity |
Applications
| Engine Control Module (ECM) Power Input Protection | Transmission Control Unit (TCU) Sensor Line Clamping |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in engine control modules against load dump transients up to ±120 V. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery feed and DC-DC input stage. Use Value: Clamps transients to ≤37.5 V within nanoseconds, preventing damage to LDOs and microcontrollers rated for 40 V absolute maximum. | Use Scenario: Shielding analog sensor inputs (e.g., throttle position, oil pressure) from ESD and switching noise in automatic transmission systems. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential signal pairs before op-amp front-end. Use Value: 1.0 µA leakage at 23.1 V avoids signal offset drift; 37.5 V clamping preserves ADC reference integrity during 8 kV contact ESD events. |
| Body Control Module (BCM) LIN Bus Protection | Electric Power Steering (EPS) Motor Driver Gate Protection |
Use Scenario: Safeguarding LIN bus transceivers from battery reverse connection and jump-start induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS connected between LIN line and chassis ground. Use Value: 23.1 V stand-off voltage exceeds LIN's 12 V nominal while allowing full 0–12 V signaling swing without conduction. | Use Scenario: Suppressing gate-source voltage spikes caused by Miller effect during high-dI/dt MOSFET switching in EPS motor drivers. IC Role / Device Role / Timing Role: TVS placed across high-side MOSFET gate-to-source terminals. Use Value: 37.5 V clamping prevents gate oxide breakdown in 40 V-rated automotive MOSFETs during PWM edge transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A-E3/5A | 28 V VBR min/max (25.2–29.8 V); same DO-214AC package; 400 W PPPM; 38.9 V VC at 10.3 A | Surface-mount alternative requiring PCB redesign; lower thermal resistance but no AEC-Q101 documentation in public datasheet | Select when space-constrained SMT layout is mandatory and AEC-Q101 validation can be confirmed separately |
| 1.5KE27A | 27 V VBR (24.3–29.7 V); DO-201AD package; 1500 W PPPM; 41.5 V VC at 36.2 A; not AEC-Q101 qualified | Higher power rating but larger footprint and non-automotive qualification; higher clamping voltage increases downstream stress | Select only for non-automotive industrial applications where 185 °C operation and whisker resistance are not required |
Compared with SMAJ28A-E3/5A and 1.5KE27A, the P4KA27AHE3/54 uniquely combines AEC-Q101 qualification, DO-41 through-hole compatibility, 185 °C junction rating, and JESD201 Class 2 whisker resistance - making it the only drop-in solution for legacy automotive harness-connected modules requiring zero PCB change.
Availability
P4KA27AHE3/54 is available at Aetrix Electronics and suitable for engine control modules, transmission control units, body control modules, and electric power steering systems requiring stable component supply across extended automotive production lifecycles.
Supply support for P4KA27AHE3/54 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 automotive, industrial, and computing markets.
The P4KA27AHE3/54 belongs to Vishay's automotive TVS diode family engineered specifically for under-hood ECU protection - emphasizing thermal robustness, AEC-Q101 compliance, and repeatable clamping performance across -65 °C to +185 °C.
FAQ
What is the clamping voltage of the P4KA27AHE3/54 and how is it measured?
The P4KA27AHE3/54 has a maximum clamping voltage (VC) of 37.5 V at 10.7 A peak pulse current, measured using a 10/1000 µs waveform per ANSI/IEEE C62.35. This value represents the upper limit of voltage seen by downstream circuitry during standardized surge events - critical for ensuring compatibility with 40 V-rated ICs in automotive power stages. The P4KA27AHE3/54 maintains this clamping performance across its full operating temperature range.
Is the P4KA27AHE3/54 qualified to AEC-Q101, and what does that mean for automotive use?
Yes, the P4KA27AHE3/54 is explicitly AEC-Q101 qualified, as confirmed in Vishay document 88364. This certification validates its reliability under automotive-specific stress conditions including temperature cycling, mechanical shock, humidity, and high-temperature reverse bias life testing. For automotive designs, the P4KA27AHE3/54 meets OEM requirements for under-hood placement without additional qualification effort.
What is the meaning of the 'HE3/54' suffix in P4KA27AHE3/54?
The 'HE3' suffix indicates RoHS-compliant, high-reliability automotive grade with JESD201 Class 2 whisker resistance; '54' denotes the preferred packaging code for 13-inch paper tape and reel (5500 units per reel). This packaging format ensures consistent automated placement in automotive manufacturing lines and supports traceability per IATF 16949 requirements for the P4KA27AHE3/54.
Can the P4KA27AHE3/54 replace older P4KE27A parts in existing designs?
No - the P4KA27AHE3/54 is not a direct replacement for P4KE27A due to differences in VBR range (P4KA27A: 25.7–28.4 V vs. P4KE27A: 23.8–26.2 V), clamping voltage (37.5 V vs. 41.5 V), and qualification level (AEC-Q101 vs. commercial grade). While both are DO-41 packaged, the P4KA27AHE3/54 offers tighter tolerance and automotive validation, requiring design review before substitution.
What is the maximum junction temperature rating for the P4KA27AHE3/54 and why does it matter?
The P4KA27AHE3/54 has a maximum junction temperature (TJ) of +185 °C, significantly exceeding standard industrial diodes (typically +150 °C). This enables reliable operation adjacent to power MOSFETs or near exhaust manifolds in modern engine control units. The elevated rating directly supports long-term stability of VBR and leakage current in harsh automotive environments - a key differentiator of the P4KA27AHE3/54.
P4KA27AHE3/54 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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- 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)
P4KA27AHE3/54 FAQ
1.How can I place an order for P4KA27AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA27AHE3/54 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 P4KA27AHE3/54 reliable?
The price and inventory of P4KA27AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA27AHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KA27AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA27AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA27AHE3/54?
P4KA27AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA27AHE3/54 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 P4KA27AHE3/54?
For technical support, including P4KA27AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA27AHE3/54 requirements.
6.How does Aetrix verify that P4KA27AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KA27AHE3/54 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 P4KA27AHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KA27AHE3/54?
All P4KA27AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA27AHE3/54, 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 P4KA27AHE3/54 part is unused and in its original packaging.
Return procedure for P4KA27AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KA27AHE3/54 Tags
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