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Diodes Incorporated P6KE39A-T
- Part No.:
- P6KE39A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE39A-T.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:7,180
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Product details
Overview
P6KE39A-T from Diodes Incorporated is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 33.3V reverse standoff voltage (VRWM), 37.1V minimum breakdown voltage (VBR), 53.9V maximum clamping voltage (VC) at 11.2A peak pulse current, and DO-15 package with glass-passivated junction - deployed in industrial power supplies and automotive body control modules.
For engineers reviewing the P6KE39A-T datasheet, P6KE39A-T pinout, P6KE39A-T application, or P6KE39A-T equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, 1.0ms 600W surge capability, unidirectional polarity for DC rail use, and DO-15 through-hole mounting compatibility with legacy PCB layouts.
Technical Context
The P6KE39A-T operates as a silicon avalanche diode that enters controlled breakdown when transient voltage exceeds its VBR of 37.1–41.0V, limiting downstream voltage to ≤53.9V at 11.2A. Its 1.0ms non-repetitive pulse rating aligns with IEC 61000-4-5 surge test waveforms.
Constructed with glass-passivated die and molded plastic DO-15 package (UL 94V-0), it delivers fast response time (<1.0ns), low leakage (<5.0µA at VRWM), and thermal resistance of 75°C/W (junction-to-ambient) - enabling reliable operation from –55°C to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W for 1.0ms, supporting IEC 61000-4-5 Level 4 (4kV/2Ω) surge immunity |
| Reverse Standoff Voltage (VRWM) | 33.3V - maximum continuous DC voltage before significant leakage |
| Breakdown Voltage (VBR) | 37.1V min / 41.0V max at 1.0mA - defines precise avalanche initiation threshold |
| Clamping Voltage (VC) | 53.9V max at 11.2A IPP - ensures protected circuit sees <54V during worst-case surge |
| Package | DO-15 - axial-leaded, through-hole mountable, 0.4g weight, UL 94V-0 rated |
| Operating Temperature | –55°C to +175°C - suitable for under-hood automotive and industrial environments |
| Leakage Current (IR) | ≤5.0µA at 33.3V - negligible standby power loss in always-on systems |
Pinout & Package
DO-15 package: axial-leaded, glass-passivated silicon junction, cathode indicated by band on body. Leads are tin-plated, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; conducts surge current to GND during overvoltage |
| Cathode | Protected line input | Connected to line being protected (e.g., +12V rail); blocks normal operation, avalanches during transients |
Key Features
| Feature | Design Value |
|---|---|
| 600W Peak Pulse Rating | Enables single-device protection against 4kV/2Ω IEC 61000-4-5 surges without external current sharing |
| Glass-Passivated Junction | Improves long-term reliability and moisture resistance vs. epoxy-passivated alternatives |
| Fast Response Time (<1.0ns) | Clamps transients before sensitive downstream ICs experience overstress |
| RoHS-Compliant & Halogen-Free | Meets EU Directive 2011/65/EU and Diodes' Green definition for environmental compliance |
| Unidirectional Polarity | Optimized for DC power rail protection where reverse voltage blocking is required |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of DC-DC converter input, absorbing >95% of 600W surge energy within 1.0ms. Use Value: Limits voltage excursion to ≤53.9V, preventing damage to 36V-rated input capacitors and controller ICs. | Use Scenario: LIN bus power rail (12V) in door module subjected to battery reversal and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS connected between LIN VBAT and GND, activated only during positive overvoltage events. Use Value: Maintains <5µA leakage at 12V, preserving sleep-mode current budget while clamping 300V transients. |
| Telecom Remote Radio Unit (RRU) | Factory Automation Sensor Interface |
Use Scenario: +48V DC feed line to outdoor radio unit, vulnerable to lightning-induced surges on tower-mounted equipment. IC Role / Device Role / Timing Role: First-stage protector mounted at entry connector, coordinated with secondary MOV/GDT stages. Use Value: Fast <1ns response ensures clamping before secondary devices activate, reducing let-through energy. | Use Scenario: 24V analog sensor supply line in robotic arm controller, subject to ESD and relay coil flyback. IC Role / Device Role / Timing Role: Localized TVS at sensor connector PCB footprint, minimizing trace inductance for optimal clamping. Use Value: DO-15 axial form factor allows direct placement at board edge with minimal loop area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-T | Lower 600W rating but SMC (DO-214AB) surface-mount package; 36V VRWM, 58.1V VC @ 10.3A | Requires PCB redesign for SMT; better thermal performance in high-density layouts | Select when automated assembly and space constraints outweigh through-hole legacy compatibility |
| P6KE36A-T | 30.8–37.8V VRWM range; 49.9V VC @ 12.0A - tighter clamping but lower standoff than P6KE39A-T | Better suited for 3.3V/5V logic rails; less margin for 24V systems with tolerance stack-up | Choose only if system nominal voltage is ≤20V and clamping headroom must be minimized |
Compared with SMBJ36A-T and P6KE36A-T, P6KE39A-T provides optimal balance of 33.3V standoff and 53.9V clamping for 24V industrial systems, retains DO-15 through-hole compatibility, and avoids SMT rework or reduced voltage margin trade-offs.
Availability
P6KE39A-T is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom remote radio units, and factory automation sensor interfaces requiring stable component supply amid obsolescence transitions.
Supply support for P6KE39A-T 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The P6KE series belongs to Diodes' transient voltage suppressor portfolio, engineered specifically for robust, cost-effective overvoltage protection in automotive, industrial, and telecom infrastructure applications where reliability under surge stress is critical.
FAQ
Is P6KE39A-T still in active production?
No - Diodes Incorporated has officially discontinued the P6KE39A-T and entire P6KE series (DS21502 Rev. 20-4, August 2024). Aetrix Electronics holds remaining authorized inventory and supports last-time buy programs with full traceability and documentation for legacy design continuity.
What is the difference between P6KE39A-T and P6KE39CA-T?
P6KE39A-T is unidirectional (cathode-banded), blocking reverse voltage and clamping only positive transients. P6KE39CA-T is bidirectional (no band), clamping both polarities - making it suitable for AC lines or data lines with no defined polarity, but with identical VRWM, VBR, and VC ratings.
Can P6KE39A-T replace P6KE36A-T in an existing design?
Yes, with verification: P6KE39A-T offers higher VRWM (33.3V vs. 30.8V) and slightly higher clamping voltage (53.9V vs. 49.9V). Confirm system operating voltage tolerances and ensure the 3.1V increase in clamping does not exceed downstream IC absolute maximum ratings.
Does P6KE39A-T meet AEC-Q101 qualification?
No - the P6KE39A-T is not AEC-Q101 qualified. Diodes states that automotive-grade versions require specific change control, PPAP capability, and IATF 16949 manufacturing; this part is standard commercial/industrial grade. For automotive use, contact Diodes directly for qualified alternatives like the D3V3Mxx series.
P6KE39A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- -
- 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):
- 11.2A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
P6KE39A-T FAQ
1.How can I place an order for P6KE39A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE39A-T 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 P6KE39A-T reliable?
The price and inventory of P6KE39A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE39A-T is usually 5 days.
3.What payment methods are accepted for P6KE39A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE39A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE39A-T?
P6KE39A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE39A-T 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 P6KE39A-T?
For technical support, including P6KE39A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE39A-T requirements.
6.How does Aetrix verify that P6KE39A-T is sourced from the original manufacturer or authorized distributors?
All P6KE39A-T 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 P6KE39A-T meets industry standards.
7.What is the process for return or replacement of P6KE39A-T?
All P6KE39A-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE39A-T, 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 P6KE39A-T part is unused and in its original packaging.
Return procedure for P6KE39A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE39A-T Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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