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Vishay General Semiconductor - Diodes Division P4KA39AHE3/54
- Part No.:
- P4KA39AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA39AHE3/54.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,557
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Product details
Overview
P4KA39AHE3/54 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), 37.1–41.0 V breakdown voltage, and 185 °C maximum junction temperature. It provides clamping protection for sensitive ICs and MOSFETs against inductive switching transients in automotive power electronics.
For engineers reviewing the P4KA39AHE3/54 datasheet, P4KA39AHE3/54 pinout, P4KA39AHE3/54 application, or P4KA39AHE3/54 equivalent, key selection criteria include AEC-Q101 qualification, 53.9 V max clamping voltage at 7.4 A surge current, ±0.1 %/°C VBR tempco, and RoHS-compliant HE3 suffix meeting JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode uses patented PAR® construction for stable clamping under high-temperature operation up to 185 °C and exhibits low incremental surge resistance with fast response time (<1 ns). Its unidirectional polarity and 1.0 VWM stand-off voltage enable precise overvoltage protection in DC-biased signal and power lines.
The device complies with ANSI/IEEE C62.35 for surge testing and is characterized for repetitive 10/1000 µs waveforms at 0.01 % duty cycle. It supports soldering per J-STD-002 and JESD22-B102, with matte tin-plated leads and UL 94 V-0 epoxy molding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 400 W - sustains automotive load-dump and ISO 7637-2 pulse 5a surges without failure |
| Breakdown Voltage VBR | 37.1–41.0 V at 1 mA - defines precise clamping onset for 36 V nominal systems |
| Max Clamping Voltage VC | 53.9 V at 7.4 A IPPM - limits downstream voltage stress during transient events |
| Stand-off Voltage VWM | 33.3 V - ensures no conduction during normal 36 V rail operation |
| Junction Temp Range | −65 °C to +185 °C - qualified for under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling and HTRB |
| RoHS & Whisker Rating | RoHS-compliant HE3 suffix; meets JESD201 Class 2 whisker resistance |
Pinout & Package
Package: DO-204AL (DO-41), axial lead, molded epoxy case with cathode band marking. Dimensions: 2.7 mm diameter × 5.2 mm body length, 9.5 mm lead length minimum.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to system ground or lower-potential node in unidirectional TVS configuration |
| Cathode | Current exit terminal; marked by color band | Connected to protected line (e.g., 36 V supply rail) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low dynamic impedance across −65 °C to +185 °C |
| 400 W peak pulse rating (10/1000 µs) | Withstands repeated ISO 7637-2 pulse 5a surges without parameter shift |
| AEC-Q101 qualification | Validated for automotive under-hood use including HTSL, TC, and HTRB stress tests |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage margin required for protected ICs' absolute maximum ratings |
| Matte tin-plated leads | Ensures reliable solderability per J-STD-002 and eliminates whisker-induced shorts |
Applications
| Automotive Body Control Module (BCM) | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power rails from alternator load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 36 V battery rail and local LDO input. Use Value: Clamps transients to ≤53.9 V, preventing damage to 40 V-rated input capacitors and LDOs. |
Use Scenario: Shields ECU main 12/36 V power input against ISO 7637-2 pulses during ignition and load switching. IC Role / Device Role / Timing Role: Primary front-end surge suppression before bulk capacitance and DC/DC converter. Use Value: Absorbs 400 W peak energy while maintaining <1.0 µA leakage at 33.3 V stand-off. |
| Commercial Vehicle Telematics Unit | Electric Power Steering (EPS) Motor Driver |
Use Scenario: Guards GPS/GSM module power and antenna feed lines against induced lightning surges on vehicle chassis. IC Role / Device Role / Timing Role: Secondary protection stage after common-mode chokes on 36 V supply inputs. Use Value: Delivers 53.9 V clamping at 7.4 A with <0.1 %/°C VBR drift for stable performance across cab temperature range. |
Use Scenario: Protects half-bridge gate drivers and current-sense amplifiers from motor commutation spikes. IC Role / Device Role / Timing Role: Localized TVS on 12 V auxiliary rail feeding driver ICs and op-amps. Use Value: Fast response (<1 ns) and low incremental resistance limit voltage overshoot during 100 ns edge transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5AT | Lower PPPM (400 W same), but VBR = 40–44.4 V; SMA package (SMT); TJ max = 150 °C | Not AEC-Q101 qualified; suited for industrial PCBs where reflow compatibility is prioritized over under-hood reliability | Select when surface-mount assembly is required and automotive qualification is not mandated |
| 1.5KE39A | Same DO-41 package; VBR = 37.1–41.0 V; PPPM = 1500 W; TJ max = 175 °C; no AEC-Q101 or HE3 whisker rating | Higher surge capacity but lacks automotive reliability validation and RoHS-compliant plating | Choose only for non-automotive 36 V systems needing higher single-pulse robustness |
Compared with SMAJ36A-E3/5AT and 1.5KE39A, the P4KA39AHE3/54 uniquely combines AEC-Q101 qualification, JESD201 Class 2 whisker resistance, and 185 °C junction rating-making it the only option qualified for long-life, high-temperature automotive power rail protection.
Availability
P4KA39AHE3/54 is available at Aetrix Electronics and suitable for automotive body control modules, engine control units, commercial telematics systems, and electric power steering designs requiring stable component supply with full traceability and lifecycle management.
Supply support for P4KA39AHE3/54 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 P4KA39AHE3/54 belongs to Vishay's automotive TVS diode family engineered specifically for AEC-Q101 compliance and under-hood thermal resilience-targeting 12 V/36 V vehicle electrical architectures.
FAQ
What is the clamping voltage of the P4KA39AHE3/54 at its rated peak pulse current?
The P4KA39AHE3/54 has a maximum clamping voltage (VC) of 53.9 V at 7.4 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and ensures protected downstream components remain within safe operating voltage limits during surge events. The P4KA39AHE3/54 maintains this clamping performance across its full operating temperature range.
Is the P4KA39AHE3/54 qualified for automotive applications?
Yes, the P4KA39AHE3/54 is AEC-Q101 qualified and designated as an automotive-grade part (indicated by the "A" suffix and HE3 packaging). It undergoes rigorous stress testing-including high-temperature reverse bias, temperature cycling, and humidity testing-to meet automotive reliability requirements. The P4KA39AHE3/54 is intended for under-hood and powertrain applications where junction temperatures reach up to 185 °C.
What does the HE3 suffix signify on the P4KA39AHE3/54?
The HE3 suffix on the P4KA39AHE3/54 indicates RoHS-compliant construction with matte tin-plated leads that meet JESD201 Class 2 whisker resistance requirements. It also denotes high-reliability automotive qualification per AEC-Q101. The "HE3" designation confirms the P4KA39AHE3/54 is suitable for long-lifecycle automotive programs where solder joint integrity and tin whisker mitigation are critical.
How does the P4KA39AHE3/54 differ from the standard P4KA39A?
The P4KA39AHE3/54 adds the HE3 suffix to the base P4KA39A, specifying RoHS compliance, JESD201 Class 2 whisker resistance, and tape-and-reel packaging (5500 pcs per 13″ reel, code "54"). Electrically and thermally, the P4KA39AHE3/54 matches the P4KA39A-same VBR, VC, PPPM, and TJ max-but the HE3 variant is explicitly qualified for high-reliability automotive production use.
What is the maximum continuous power dissipation of the P4KA39AHE3/54?
The P4KA39AHE3/54 has a maximum steady-state power dissipation (PD) of 1.5 W when mounted on an infinite heatsink at lead temperature (TL) = 75 °C. Derating is required above 25 °C ambient, per Figure 2 in Vishay document 88364. This PD rating applies to continuous DC or low-duty-cycle operation-not to transient surge conditions, where the P4KA39AHE3/54 handles 400 W peak pulses.
P4KA39AHE3/54 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 7.4A
- 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)
P4KA39AHE3/54 FAQ
1.How can I place an order for P4KA39AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA39AHE3/54 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 P4KA39AHE3/54 reliable?
The price and inventory of P4KA39AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA39AHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KA39AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA39AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA39AHE3/54?
P4KA39AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA39AHE3/54 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 P4KA39AHE3/54?
For technical support, including P4KA39AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA39AHE3/54 requirements.
6.How does Aetrix verify that P4KA39AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KA39AHE3/54 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 P4KA39AHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KA39AHE3/54?
All P4KA39AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA39AHE3/54, 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 P4KA39AHE3/54 part is unused and in its original packaging.
Return procedure for P4KA39AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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