My Inquiry
My Account
Diodes Incorporated P6KE33CA-T
- Part No.:
- P6KE33CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE33CA-T.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:8,148
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6KE33CA-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 33V reverse standoff voltage (VRWM), 45.7V max clamping voltage at 13.2A peak pulse current, and DO-15 glass-passivated package-used in industrial power supplies, automotive body control modules, and telecom interface protection.
For engineers reviewing the P6KE33CA-T datasheet, P6KE33CA-T pinout, P6KE33CA-T application, or P6KE33CA-T equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, 1.0ms 600W pulse handling capability, bidirectional surge suppression for AC-coupled or floating lines, and DO-15 leaded package compatibility with through-hole PCB layouts.
Technical Context
The P6KE33CA-T operates as a voltage-clamping device that remains high-impedance below 33V VRWM and rapidly avalanches above its 31.4–34.7V breakdown range to limit transients. Its bidirectional structure enables symmetrical clamping on both polarities without external polarity management.
It delivers 600W peak pulse power per the 1.0ms 10/1000μs waveform standard, with thermal resistance of 75°C/W junction-to-ambient and 15°C/W junction-to-lead-enabling reliable operation under repeated surge events when mounted on adequate copper land area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - Handles IEC 61000-4-5 Level 4 surges (4kV/2Ω) without failure |
| Reverse Standoff Voltage (VRWM) | 33V - Maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage (VBR) | 31.4–34.7V @ 1.0mA - Confirmed avalanche initiation window for predictable clamping onset |
| Max Clamping Voltage (VC) | 45.7V @ 13.2A - Limits downstream circuit voltage during full-rated surge event |
| Peak Pulse Current (IPP) | 13.2A - Sustains 1.0ms transient without parametric shift or degradation |
| Package | DO-15 - Through-hole plastic package with 9.5mm lead length, UL 94V-0 rated |
| Operating Temperature | −55°C to +175°C - Validated for under-hood automotive and industrial ambient extremes |
Pinout & Package
DO-15 package: axial-leaded, molded plastic body with glass-passivated silicon die; cathode identification not marked on bidirectional variant (P6KE33CA-T); weight ≈ 0.4g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Surge conduction path | Bidirectional terminals-either lead serves as input/output; no polarity dependency in layout |
| Leads (anode & cathode) | Thermal and electrical interface | Plated leads solderable per MIL-STD-202 Method 208; 15°C/W junction-to-lead thermal path |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse rating | Enables single-device protection against severe lightning-induced surges per IEC 61000-4-5 |
| Glass-passivated die construction | Improves moisture resistance and long-term reliability in humid or condensing environments |
| Bidirectional configuration | Eliminates need for polarity-aware placement-ideal for AC lines, differential buses, or floating references |
| RoHS-compliant lead finish | Meets EU Directive 2011/65/EU with all applicable exemptions; halogen- and antimony-free |
Applications
| Industrial Power Input Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24V DC input rail of programmable logic controller exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converter input. Use Value: Clamps 100V+ load dump spikes to ≤45.7V, preventing damage to downstream regulator ICs and microcontrollers. | Use Scenario: LIN bus line in door module subjected to ESD and battery reversal events. IC Role / Device Role / Timing Role: Bidirectional TVS across LIN signal and ground to absorb ±15kV contact ESD per ISO 10605. Use Value: Symmetrical clamping ensures protection regardless of LIN signal polarity or fault direction, preserving bus integrity. |
| Telecom Interface Surge Protection | AC-DC Adapter Secondary Side |
Use Scenario: RS-485 transceiver port connected to outdoor cabling vulnerable to induced lightning surges. IC Role / Device Role / Timing Role: Line-to-ground TVS on A/B differential pair, placed adjacent to connector. Use Value: Limits common-mode transients to safe levels before they reach transceiver ESD structures, avoiding latch-up or permanent failure. | Use Scenario: Output of isolated 12V flyback adapter supplying sensitive IoT sensor node. IC Role / Device Role / Timing Role: Output rail clamp protecting low-voltage LDO and MCU from output capacitor discharge transients. Use Value: Prevents overvoltage during hot-plug or short-circuit recovery, maintaining system uptime and component lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Same VRWM and VC, but SMB surface-mount package (lower profile, higher thermal resistance) | Requires rework of PCB layout; unsuitable for through-hole legacy designs | Select when board space is constrained and automated SMT assembly is available |
| 1.5KE33CA | Same DO-15 package but 1500W rating and higher IPP (42.9A), larger die size | Over-spec for most 600W use cases; higher cost and capacitance | Select only if system-level testing confirms need for >600W surge margin |
Compared with SMBJ33CA and 1.5KE33CA, P6KE33CA-T provides optimal balance of proven 600W surge handling, DO-15 through-hole compatibility, and cost efficiency for mid-tier industrial and automotive protection-without over-engineering or layout redesign.
Availability
P6KE33CA-T is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control modules, and telecom interface surge protection requiring stable component supply and long-lifecycle support.
Supply support for P6KE33CA-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 North America.
The P6KE series belongs to Diodes' transient voltage suppressor portfolio, engineered specifically for robust, cost-effective overvoltage protection in harsh-environment applications including automotive, industrial automation, and communications infrastructure.
FAQ
What does the "C" suffix in P6KE33CA-T indicate?
The "C" suffix denotes a bidirectional configuration: the device clamps symmetrically for both positive and negative transients, with identical electrical characteristics in either polarity. Unlike unidirectional variants (e.g., P6KE33A-T), it has no cathode marking and requires no orientation during placement-making it ideal for AC lines, differential signals, or floating grounds where polarity is undefined or variable.
Is P6KE33CA-T still in active production?
No-Diodes Incorporated has officially discontinued the P6KE33CA-T and entire P6KE series (DS21502 Rev. 20–4 states "OBSOLETE – PART DISCONTINUED"). However, Aetrix Electronics maintains legacy inventory and offers last-time-buy support, extended traceability, and cross-reference assistance to qualified replacements such as SMBJ33CA or 1.5KE33CA where functionally appropriate.
How does P6KE33CA-T compare to MOV-based protection?
P6KE33CA-T offers faster response (<1ps vs. ~20ns for MOVs), tighter clamping voltage tolerance (±5% VBR vs. ±20% for MOVs), and no degradation after repeated surges. Unlike MOVs, it exhibits no leakage increase or capacitance drift over time, making it preferred for precision-sensitive or long-life applications like automotive ECUs and medical power supplies where reliability is critical.
Can P6KE33CA-T be used in parallel for higher surge current handling?
No-TVS diodes like P6KE33CA-T should not be paralleled due to mismatched breakdown voltages causing current imbalance and premature failure of the lower-VBR unit. For higher IPP requirements, select a single higher-rated device (e.g., 1.5KE33CA) or implement staged protection with upstream current-limiting impedance and downstream low-capacitance TVS for fine clamping.
P6KE33CA-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):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 13.2A
- 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
P6KE33CA-T FAQ
1.How can I place an order for P6KE33CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE33CA-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 P6KE33CA-T reliable?
The price and inventory of P6KE33CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE33CA-T is usually 5 days.
3.What payment methods are accepted for P6KE33CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE33CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE33CA-T?
P6KE33CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE33CA-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 P6KE33CA-T?
For technical support, including P6KE33CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE33CA-T requirements.
6.How does Aetrix verify that P6KE33CA-T is sourced from the original manufacturer or authorized distributors?
All P6KE33CA-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 P6KE33CA-T meets industry standards.
7.What is the process for return or replacement of P6KE33CA-T?
All P6KE33CA-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE33CA-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 P6KE33CA-T part is unused and in its original packaging.
Return procedure for P6KE33CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE33CA-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…
