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Vishay General Semiconductor - Diodes Division P6KA39AHE3/54
- Part No.:
- P6KA39AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KA39AHE3/54.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,074
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Product details
Overview
P6KA39AHE3/54 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 33.3 V stand-off voltage (VWM), 37.1–41.0 V breakdown range (VBR), 600 W peak pulse power (10/1000 μs), 11.1 A peak pulse current (IPPM), and 53.9 V clamping voltage at rated current - deployed in automotive power supplies, industrial motor controllers, and telecom interface protection.
For engineers reviewing the P6KA39AHE3/54 datasheet, P6KA39AHE3/54 pinout, P6KA39AHE3/54 application, or P6KA39AHE3/54 equivalent, key selection criteria include unidirectional polarity, DO-15 package compatibility, AEC-Q101 qualification, high-temperature operation up to +185 °C, and low leakage (<1 μA at VWM).
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with junction passivation optimized for stable clamping under repetitive surge conditions. Its 185 °C maximum junction temperature and AEC-Q101 qualification confirm suitability for under-hood automotive environments and industrial systems requiring long-term reliability.
The device delivers precise voltage limiting via sharp avalanche breakdown and exhibits low incremental surge resistance for consistent clamping performance. It is rated for 75 A non-repetitive forward surge current (8.3 ms half-sine) and maintains <1 μA reverse leakage at 33.3 V and 150 °C - critical for low-power sensor and microcontroller I/O line protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33.3 V - maximum continuous reverse operating voltage before conduction begins; ensures no interference with normal circuit operation. |
| VBR min/max | 37.1 V / 41.0 V at 1 mA - tight breakdown tolerance enables predictable turn-on during transients without premature triggering. |
| VC @ IPPM | 53.9 V at 11.1 A - clamping voltage defines worst-case voltage seen by protected ICs during 10/1000 μs surge events. |
| PPPM | 600 W - peak pulse power handling capability with standard 10/1000 μs waveform supports IEC 61000-4-5 Level 4 compliance. |
| TJ max | +185 °C - extended junction temperature rating allows use in high-ambient environments such as engine control units and power converters. |
| Polarity | Unidirectional - protects against positive-going transients only; cathode marked by band; not suitable for AC or bidirectional suppression. |
| IFSM | 75 A - surge current rating for 8.3 ms half-sine wave ensures survivability during inductive switch-off events in relay or solenoid drivers. |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, molded epoxy case with UL 94 V-0 rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return; forms clamping loop with cathode during overvoltage events. |
| Cathode | Protected line connection / transient sink | Connected to line being protected (e.g., 24 V rail or CAN_H); conducts avalanche current to anode when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for ECUs and ADAS modules. |
| 185 °C junction rating | Enables operation in under-hood locations without derating; eliminates need for external thermal management in compact designs. |
| 600 W peak pulse power | Supports high-energy transients per ISO 7637-2 Pulse 1/2b/5a and IEC 61000-4-5; protects against load dump and inductive kickback. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on downstream components - critical for 3.3 V/5 V logic and automotive MCUs with tight absolute maximum ratings. |
| HE3 suffix | Meets JESD 201 Class 2 whisker resistance - ensures long-term solder joint integrity in high-vibration automotive applications. |
Applications
| Automotive Power Distribution | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery input and DC/DC converter input stage. Use Value: Limits voltage to ≤53.9 V during 600 W surges, preventing damage to buck controller ICs rated for 60 V absolute max. | Use Scenario: Safeguarding digital I/O lines of PLC output cards driving solenoids and contactors. IC Role / Device Role / Timing Role: Transient suppressor on discrete transistor gate drive outputs and feedback sensing nodes. Use Value: Clamps inductive flyback spikes within 1 ns, preserving signal integrity and avoiding false triggering of optocouplers or level shifters. |
| Telecom Interface Protection | Consumer Appliance Control Board |
Use Scenario: Shielding RS-485 transceiver terminals in base station remote units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Line-side TVS on differential bus lines (A/B) referenced to local ground plane. Use Value: Withstands 10/1000 μs surges up to 11.1 A while maintaining <1 μA leakage at 33.3 V - avoids data corruption during standby. | Use Scenario: Overvoltage protection for microcontroller GPIOs connected to push-button panels and indicator LEDs in smart HVAC systems. IC Role / Device Role / Timing Role: Point-of-use TVS on each button trace and LED anode line, mounted near MCU pins. Use Value: Prevents latch-up or ESD damage from user-handling events, leveraging 185 °C rating to survive reflow and long-term thermal cycling in sealed enclosures. |
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 | Same DO-214AC package; 36 V VWM; 58.1 V VC @ 10.3 A; lower PPPM (400 W); not AEC-Q101 qualified | Limited to commercial/industrial use; unsuitable for automotive under-hood deployment due to 150 °C TJ max | Select when cost sensitivity outweighs automotive qualification and higher energy handling is unnecessary. |
| 1.5KE39A | DO-201AD package; 39 V VWM; 60.3 V VC @ 9.7 A; same 600 W PPPM; AEC-Q101 not claimed; higher VF (3.5 V) | Requires PCB layout change; larger footprint; less optimal for space-constrained automotive modules | Choose only if legacy board design uses DO-201AD and rework is prohibitive; verify thermal derating at TL = 75 °C. |
Compared with SMAJ36A and 1.5KE39A, P6KA39AHE3/54 uniquely combines AEC-Q101 qualification, DO-15 form factor, 185 °C operation, and HE3 whisker-resistant plating - making it the preferred choice for new automotive and high-reliability industrial designs where long-term field stability is mandatory.
Availability
P6KA39AHE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom infrastructure equipment requiring stable component supply across multi-year production cycles.
Supply support for P6KA39AHE3/54 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 MOSFETs with emphasis on high-reliability, high-temperature, and automotive-qualified solutions.
The P6KA series was engineered specifically for demanding transient suppression in automotive power systems and industrial controls - delivering AEC-Q101 compliance, extended temperature operation, and repeatable clamping performance under harsh environmental stress.
FAQ
What is the maximum operating temperature for P6KA39AHE3/54?
P6KA39AHE3/54 has a maximum junction temperature (TJ) of +185 °C, validated per AEC-Q101 requirements. This enables reliable operation in under-hood automotive applications and high-ambient industrial environments without thermal derating below 150 °C ambient. The device maintains specified clamping performance across its full temperature range.
Is P6KA39AHE3/54 suitable for bidirectional transient protection?
No, P6KA39AHE3/54 is a unidirectional TVS diode and protects only against positive-going transients on the cathode side. It must be used with correct polarity - cathode toward the protected line. For bidirectional protection, a separate device such as P6SMB33CA or dual-diode configuration is required; P6KA39AHE3/54 does not support reverse-polarity surge suppression.
What does the HE3/54 suffix indicate in P6KA39AHE3/54?
The HE3 suffix denotes RoHS-compliant, matte tin-plated leads meeting JESD 201 Class 2 whisker resistance, while /54 indicates packaging in 13" diameter paper tape and reel with 4000 units per reel. This configuration ensures long-term solder joint reliability in automotive vibration environments and supports automated SMT placement.
How does P6KA39AHE3/54 compare to P6KA39A in electrical performance?
P6KA39AHE3/54 is the packaged, AEC-Q101 qualified version of P6KA39A. Electrically, both share identical VWM (33.3 V), VBR (37.1–41.0 V), VC (53.9 V), and PPPM (600 W). The HE3/54 variant adds whisker-resistant plating and certified automotive qualification - no electrical parameter differences exist between the base and HE3/54 versions.
Can P6KA39AHE3/54 be used in place of P6KA36AHE3/54?
P6KA39AHE3/54 is not a direct replacement for P6KA36AHE3/54 due to differing voltage ratings: P6KA36AHE3/54 has VWM = 30.8 V and VBR = 34.2–37.8 V, while P6KA39AHE3/54 has VWM = 33.3 V and VBR = 37.1–41.0 V. Substitution requires verification that the higher stand-off and breakdown voltages meet system margin requirements and do not compromise protection timing.
P6KA39AHE3/54 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 11.1A
- 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)
P6KA39AHE3/54 FAQ
1.How can I place an order for P6KA39AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KA39AHE3/54 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 P6KA39AHE3/54 reliable?
The price and inventory of P6KA39AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KA39AHE3/54 is usually 5 days.
3.What payment methods are accepted for P6KA39AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KA39AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KA39AHE3/54?
P6KA39AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KA39AHE3/54 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 P6KA39AHE3/54?
For technical support, including P6KA39AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KA39AHE3/54 requirements.
6.How does Aetrix verify that P6KA39AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P6KA39AHE3/54 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 P6KA39AHE3/54 meets industry standards.
7.What is the process for return or replacement of P6KA39AHE3/54?
All P6KA39AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P6KA39AHE3/54, 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 P6KA39AHE3/54 part is unused and in its original packaging.
Return procedure for P6KA39AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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