My Inquiry
My Account
Diodes Incorporated P6KE39CA-T
- Part No.:
- P6KE39CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE39CA-T.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:4,366
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6KE39CA-T from Diodes Incorporated is a bidirectional 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 construction with glass passivated die - deployed in industrial power supplies and automotive body control modules.
For engineers reviewing the P6KE39CA-T datasheet, P6KE39CA-T pinout, P6KE39CA-T application, or P6KE39CA-T equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, unidirectional vs. bidirectional polarity requirements, 1.0ms pulse waveform compliance, and DO-15 thermal derating above +25°C ambient.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling suppression of positive and negative transients without external polarity coordination. Its 600W peak pulse power rating is defined under a 10/1000μs double-exponential waveform per IEC 61000-4-5, with clamping performance validated at 1.0ms pulse width and 11.2A IPP.
The device uses a glass-passivated junction for stable leakage and robust surge endurance, exhibiting 5.0μA max reverse leakage at VRWM and 5.0°C/W steady-state power dissipation at TL = +75°C on 40mm² copper land - confirming suitability for PCB-mounted surge protection where lead temperature management is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W at 1.0ms non-repetitive pulse - defines maximum transient energy absorption capability before failure. |
| Reverse Standoff Voltage (VRWM) | 33.3V - maximum continuous DC or RMS voltage the device blocks without significant leakage. |
| Breakdown Voltage (VBR) | 37.1V min @ 1.0mA - voltage at which device enters avalanche conduction; ensures reliable triggering above normal operating rail. |
| Clamping Voltage (VC) | 53.9V max @ 11.2A IPP - limits voltage seen by downstream circuitry during surge events. |
| Package | DO-15 - axial-leaded plastic package rated UL 94V-0, supporting manual or wave soldering with 0.4g mass. |
| Thermal Resistance (RθJA) | 75°C/W - junction-to-ambient thermal resistance under standard PCB mounting conditions. |
| Operating Temperature | -55°C to +175°C - enables use in under-hood automotive and industrial environments with wide thermal cycling. |
Pinout & Package
DO-15 package: axial-leaded, molded plastic body with glass passivated die; cathode band not marked on bidirectional version (P6KE39CA-T); leads are tin-plated, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction terminals | No polarity marking; either lead serves as input/output for transient suppression in AC or dual-polarity DC paths. |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4kV line-earth) on 24V systems. |
| Glass passivated die construction | Ensures stable leakage current (<5.0μA at VRWM) and long-term reliability under humidity and thermal stress. |
| Bidirectional configuration | Eliminates need for polarity-aware layout; supports protection of differential buses (e.g., RS-485, CAN) without external diode pairing. |
| Fast response time (<1ps) | Clamps transients before sensitive downstream components (e.g., microcontrollers, transceivers) experience overstress. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24V DC input rail in programmable logic controller (PLC) power stage exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converter input to limit transient voltage to ≤54V. Use Value: Prevents damage to 40V-rated input MOSFETs and reduces need for oversized input capacitors due to low clamping overshoot. |
Use Scenario: LIN bus transceiver power supply line in door module subjected to battery disconnect transients and ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS connected between VBAT and GND to suppress ±100V/50ns fast edges per ISO 10605. Use Value: Maintains transceiver operation during 30A surge pulses without latch-up or parametric shift, verified per AEC-Q101 stress tests. |
| RS-485 Data Line Protection | AC-DC Adapter Input Stage |
Use Scenario: Half-duplex RS-485 transceiver interface in building automation node installed in lightning-prone outdoor enclosures. IC Role / Device Role / Timing Role: Paired bidirectional TVS devices (one per line) referenced to common-mode ground to suppress common-mode surges. Use Value: Limits differential voltage excursion to <15V during 1kV ring wave test, preserving data integrity and avoiding receiver saturation. |
Use Scenario: Bridge rectifier output in universal-input (90–264VAC) adapter where MOV aging necessitates secondary clamping. IC Role / Device Role / Timing Role: Secondary TVS placed after bulk capacitor to absorb residual switching spikes and line surges missed by primary MOV. Use Value: Extends capacitor lifetime by reducing ripple-induced thermal stress and prevents overvoltage failure of 450V-rated electrolytic capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | DO-214AA package; 36V VRWM; 58.1V VC @ 10.3A; lower 600W rating but tighter clamping tolerance. | Surface-mount only; requires reflow-compatible PCB layout; better suited for high-density consumer electronics. | Select when board space is constrained and automated assembly is required; verify thermal pad design for RθJA ≤ 50°C/W. |
| 1.5KE39CA | DO-201AD package; same 33.3V VRWM; 53.9V VC @ 11.2A; identical electrical specs but higher 1.5kW peak rating. | Larger axial package; higher thermal mass; used where mechanical robustness and legacy through-hole compatibility are prioritized. | Choose for high-reliability industrial equipment requiring proven field history and easier manual replacement. |
Compared with P6KE39CA-T, SMBJ36CA offers SMT efficiency at the cost of manual repairability, while 1.5KE39CA delivers identical clamping with greater surge headroom and mechanical durability - making it preferable for mission-critical infrastructure where field serviceability matters.
Availability
P6KE39CA-T is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control modules, RS-485 data line hardening, and AC-DC adapter input staging requiring stable component supply despite its obsolete status.
Supply support for P6KE39CA-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 cost-effective, high-energy surge protection in industrial, automotive, and communications infrastructure - emphasizing robustness, repeatable clamping, and JEDEC-compliant packaging.
FAQ
Is P6KE39CA-T still in active production?
No, P6KE39CA-T is officially obsolete and discontinued per Diodes Incorporated's DS21502 Rev. 20-4 (August 2024). Aetrix Electronics maintains limited legacy stock with full traceability and provides lifecycle coordination support, including cross-reference guidance and last-time-buy planning for ongoing production programs.
What is the difference between P6KE39A-T and P6KE39CA-T?
P6KE39A-T is unidirectional with cathode band marking and suppresses only positive transients relative to ground; P6KE39CA-T is bidirectional, lacks polarity marking, and clamps both positive and negative excursions symmetrically - essential for AC-coupled or differential signal lines like CAN or RS-485.
Can P6KE39CA-T be used in automotive applications?
Yes - though not AEC-Q101 qualified itself, P6KE39CA-T is constructed with glass-passivated die and RoHS-compliant plating, and Diodes states that automotive-grade variants (PPAP-capable, IATF 16949 manufactured) are available upon request; consult Diodes' automotive product definitions page for qualified alternatives.
How does thermal derating affect P6KE39CA-T's surge capability?
At ambient temperatures above +25°C, peak pulse power must be linearly derated per Fig. 4 in DS21502: at +75°C, only ~65% of 600W (≈390W) is sustainable; this directly reduces maximum clamping current - e.g., 11.2A IPP drops to ~9.2A - requiring layout review for copper area and lead length to maintain thermal performance.
P6KE39CA-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:
- -
- Bidirectional Channels:
- 1
- 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
P6KE39CA-T FAQ
1.How can I place an order for P6KE39CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE39CA-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 P6KE39CA-T reliable?
The price and inventory of P6KE39CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE39CA-T is usually 5 days.
3.What payment methods are accepted for P6KE39CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE39CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE39CA-T?
P6KE39CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE39CA-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 P6KE39CA-T?
For technical support, including P6KE39CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE39CA-T requirements.
6.How does Aetrix verify that P6KE39CA-T is sourced from the original manufacturer or authorized distributors?
All P6KE39CA-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 P6KE39CA-T meets industry standards.
7.What is the process for return or replacement of P6KE39CA-T?
All P6KE39CA-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE39CA-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 P6KE39CA-T part is unused and in its original packaging.
Return procedure for P6KE39CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE39CA-T 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
