My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4KA39HE3/54
- Part No.:
- P4KA39HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA39HE3/54.pdf
- Description:
- TVS DIODE 31.6VWM 56.4VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,078
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4KA39HE3/54 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), 35.1–42.9 V breakdown voltage (VBR), and 185 °C maximum junction temperature - designed to protect MOSFETs, ICs, and sensor signal lines in automotive powertrain and body electronics against inductive switching transients.
For engineers reviewing the P4KA39HE3/54 datasheet, P4KA39HE3/54 pinout, P4KA39HE3/54 application, or P4KA39HE3/54 equivalent, key selection criteria include AEC-Q101 qualification, 7.1 A peak pulse current (IPPM), 56.4 V clamping voltage (VC), low 0.100 %/°C VBR temperature coefficient, and RoHS-compliant HE3 high-reliability lead finish.
Technical Context
The P4KA39HE3/54 employs Vishay's patented PAR® construction for stable clamping under repetitive surge stress and operates exclusively in unidirectional polarity with cathode indicated by color band. Its 1.5 W steady-state power dissipation and 40 A IFSM (8.3 ms half-sine) support robust overvoltage protection in DC-biased circuits.
Designed for automotive environments, it meets AEC-Q101 stress test requirements and features matte tin-plated leads qualified per J-STD-002 and JESD22-B102, with JESD201 Class 2 whisker resistance. The device exhibits 1.0 µA max reverse leakage at 31.6 V stand-off voltage (VWM) and 3.5 V max forward voltage at 25 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 400 W - sustains automotive load-dump and ISO 7637-2 transient surges without degradation |
| Breakdown Voltage VBR | 35.1–42.9 V at 1.0 mA - ensures reliable triggering above system nominal voltage while avoiding false trips |
| Clamping Voltage VC | 56.4 V at 7.1 A IPPM - limits downstream voltage to safe levels for 3.3 V/5 V logic and automotive microcontrollers |
| Stand-off Voltage VWM | 31.6 V - provides 20 % margin above 24 V automotive systems, preventing leakage-induced power loss |
| Junction Temperature Range | −65 °C to +185 °C - enables operation in engine bay and transmission control units without derating |
| Package | DO-204AL (DO-41) - industry-standard through-hole package compatible with legacy automotive PCB assembly |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling, HTRB, and ESD per AEC standard |
Pinout & Package
DO-204AL (DO-41) molded epoxy package with axial leads; cathode denoted by color band. Matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side return path | Enables unidirectional clamping from cathode to anode during positive transients on cathode side |
| Cathode | Transient voltage sensing node; marked by color band | Connected to line being protected (e.g., 24 V supply rail or sensor output); absorbs surge energy into ground via anode |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Ensures consistent VBR and low dynamic impedance across life cycle, critical for repeatable surge suppression in automotive ECUs |
| 400 W peak pulse rating (10/1000 µs) | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b waveforms without failure in 12 V/24 V vehicle networks |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive under-hood applications including temperature cycling (−40 °C to +125 °C), HTRB, and mechanical shock |
| Low 0.100 %/°C VBR tempco | Maintains tight clamping window across −40 °C to +150 °C ambient, reducing design margin uncertainty |
| RoHS-compliant HE3 finish | Matte tin plating passes JESD201 Class 2 whisker test and J-STD-002 solderability, ensuring long-term interconnect reliability |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from alternator load dump and relay coil flyback in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between 24 V supply and chassis ground, clamping transients within 1 ns response time. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V logic supplies by limiting voltage to ≤56.4 V during 400 W surges. |
Use Scenario: Shields 24 V digital input optocoupler interfaces from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff protector on dry-contact input lines, absorbing inductive kickback from solenoid drivers and motor starters. Use Value: Enables >100,000 surge cycles without parameter shift due to PAR® construction and 185 °C TJ rating. |
| Automotive Body Control Module (BCM) | Telecom Power Supply Front-End |
Use Scenario: Safeguards LIN bus transceivers and LED driver ICs from battery reverse connection and jump-start transients in door modules and lighting controllers. IC Role / Device Role / Timing Role: Cathode-connected to LIN line or LED anode rail; anode tied to ground plane to shunt positive spikes. Use Value: Maintains 31.6 V stand-off with only 1.0 µA leakage at 150 °C, minimizing standby current in always-on BCM domains. |
Use Scenario: Clamps AC/DC rectifier output surges caused by lightning-induced grid transients in telecom base station power supplies. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk capacitor input, operating in parallel with MOVs for faster response. Use Value: Delivers 56.4 V clamping at 7.1 A with <1 ns response - significantly faster than MOV-based solutions for sub-microsecond events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52 (Vishay) | Surface-mount SMB package; 36 V VBR min; 600 W PPPM; 100 A IPPM; same AEC-Q101 qualification | Requires SMT reflow process; better suited for space-constrained PCBs; higher surge rating but lower thermal mass | Select when board real estate is limited and automated assembly is used; verify thermal relief pad design for 1.5 W PD |
| 1.5KE39A (ON Semiconductor) | Through-hole DO-201AD package; 39 V VBR; 1500 W PPPM; 38.9 V VC; no AEC-Q101 qualification; 175 °C TJ max | Higher surge capacity but lacks automotive qualification; intended for industrial/commercial use only | Select for non-automotive cost-sensitive designs requiring higher single-pulse energy handling |
Compared with SMBJ36A-E3/52 and 1.5KE39A, the P4KA39HE3/54 offers AEC-Q101 validation in a proven through-hole DO-41 form factor with optimized 56.4 V clamping for 24 V systems - balancing automotive compliance, thermal robustness, and legacy assembly compatibility.
Availability
P4KA39HE3/54 is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, and telecom power supply front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for P4KA39HE3/54 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, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P4KA39HE3/54 belongs to Vishay's automotive TVS diode family engineered specifically for AEC-Q101-compliant transient suppression in harsh-environment electronic control units and power distribution systems.
FAQ
What is the clamping voltage of the P4KA39HE3/54 at its rated peak pulse current?
The P4KA39HE3/54 has a maximum clamping voltage (VC) of 56.4 V at 7.1 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream 24 V system components remain within safe operating voltage limits during transient events. The P4KA39HE3/54 maintains this clamping performance across its full operating temperature range.
Is the P4KA39HE3/54 qualified for automotive applications?
Yes, the P4KA39HE3/54 is AEC-Q101 qualified and designated as an automotive-grade part, confirmed by its HE3 suffix and documentation in Vishay's Automotive Transient Voltage Suppressors specification (Document Number 88364). It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and electrostatic discharge validation required for under-hood and chassis-mounted electronics.
What does the "HE3" suffix indicate in P4KA39HE3/54?
The "HE3" suffix in P4KA39HE3/54 denotes Vishay's high-reliability, RoHS-compliant construction: matte tin-plated leads meeting J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements. It also signifies AEC-Q101 qualification and compliance with UL 94 V-0 flammability standards for the epoxy molding compound used in the DO-204AL package.
What is the maximum operating junction temperature for the P4KA39HE3/54?
The P4KA39HE3/54 has a maximum operating junction temperature (TJ) of +185 °C, enabling reliable operation in high-temperature automotive environments such as engine control units and transmission control modules. This rating is specified in the Absolute Maximum Ratings table and supported by derating curves showing pulse power capability down to zero at 185 °C initial junction temperature.
How does the P4KA39HE3/54 differ from the P4KA39A variant?
The P4KA39HE3/54 has a breakdown voltage (VBR) range of 35.1–42.9 V at 1.0 mA, while the P4KA39A variant specifies 37.1–41.0 V - indicating tighter VBR tolerance for the 'A' grade. Both share identical package, power ratings, and AEC-Q101 qualification, but the P4KA39HE3/54 offers broader VBR spread suitable for applications where exact threshold matching is less critical than cost and availability.
P4KA39HE3/54 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):
- 31.6V
- Voltage - Breakdown (Min):
- 35.1V
- Voltage - Clamping (Max) @ Ipp:
- 56.4V
- Current - Peak Pulse (10/1000µs):
- 7.1A
- 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)
P4KA39HE3/54 FAQ
1.How can I place an order for P4KA39HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA39HE3/54 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 P4KA39HE3/54 reliable?
The price and inventory of P4KA39HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA39HE3/54 is usually 5 days.
3.What payment methods are accepted for P4KA39HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA39HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA39HE3/54?
P4KA39HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA39HE3/54 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 P4KA39HE3/54?
For technical support, including P4KA39HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA39HE3/54 requirements.
6.How does Aetrix verify that P4KA39HE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KA39HE3/54 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 P4KA39HE3/54 meets industry standards.
7.What is the process for return or replacement of P4KA39HE3/54?
All P4KA39HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA39HE3/54, 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 P4KA39HE3/54 part is unused and in its original packaging.
Return procedure for P4KA39HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KA39HE3/54 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
