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Diodes Incorporated P6KE43A-T
- Part No.:
- P6KE43A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE43A-T.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:4,922
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Product details
Overview
P6KE43A-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 36.8V reverse standoff voltage (VRWM), 40.9V minimum breakdown voltage (VBR), 59.3V maximum clamping voltage (VC) at 10.1A peak pulse current, and DO-15 package with glass-passivated junction - used in industrial power supplies and automotive body control modules.
For engineers reviewing the P6KE43A-T datasheet, P6KE43A-T pinout, P6KE43A-T application, or P6KE43A-T equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, 10.1A IPP capability under 1.0ms 8/20μs surge, thermal resistance (RθJA = 75°C/W), and RoHS-compliant lead-free plating for reflow compatibility.
Technical Context
The P6KE43A-T operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 40.9V–45.2V breakdown range (tested at 1.0mA). Its glass-passivated die ensures stable leakage (<5.0μA at VRWM) and fast response (<1.0ns), enabling effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
It is rated for 600W non-repetitive peak pulse power (tP = 1.0ms), derated linearly above +25°C ambient, with steady-state dissipation limited to 5.0W at TL = +75°C on 40mm² copper land. Thermal resistance values (RθJC = 20°C/W, RθJL = 15°C/W) support thermal design in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 1.0ms 8/20μs surge without failure |
| Reverse Standoff Voltage | 36.8V - maximum continuous DC operating voltage before conduction |
| Breakdown Voltage | 40.9V min @ 1.0mA - precise avalanche initiation threshold |
| Clamping Voltage | 59.3V max @ 10.1A - limits downstream voltage stress during surge |
| Leakage Current | <5.0μA @ 36.8V - negligible standby power loss and signal loading |
| Package | DO-15 - industry-standard axial leaded package with 0.4g mass and UL 94V-0 rating |
| Thermal Resistance | RθJA = 75°C/W - defines temperature rise per watt in standard JEDEC layout |
Pinout & Package
DO-15 package: axial-leaded, molded plastic body (UL 94V-0), cathode band marked on case. Leads are solderable per MIL-STD-202, Method 208; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / low-impedance surge return | Connected to ground or low-impedance reference plane during clamping |
| Cathode | Protected line connection / high-side surge entry point | Connected to rail being protected (e.g., +12V input); cathode band identifies polarity |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse rating | Enables robust protection against IEC 61000-4-5 Level 4 (4kV/2Ω) surges on 12–48V rails |
| Glass-passivated junction | Ensures long-term parameter stability and reduced parameter drift under thermal cycling |
| Fast response time (<1.0ns) | Clamps transients before sensitive downstream logic or analog circuitry responds |
| RoHS-compliant lead finish | Supports lead-free reflow profiles (JEDEC J-STD-020) without solder joint reliability risk |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during surge, reducing stress on protected ICs |
Applications
| Industrial Power Input Protection | Automotive Body Control Module |
|---|---|
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 overvoltage clamp placed between input connector and bulk capacitor, absorbing >95% of surge energy before it reaches upstream rectifier and downstream regulator. Use Value: Limits rail voltage to ≤59.3V during 10.1A surge, preventing damage to 36V-rated input MOSFETs and 40V-rated electrolytic capacitors. | Use Scenario: 12V supply rail feeding microcontroller, CAN transceiver, and relay drivers in door module electronics. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at board edge connector, shunting load-dump transients (SAE J1113-11) away from low-voltage ICs. Use Value: Clamps 12V rail to 59.3V within nanoseconds, maintaining operation of 5V LDOs and preserving firmware integrity during 120V/50ms load dump events. |
| Telecom DC Feeder Protection | Renewable Energy Charge Controller |
Use Scenario: -48V DC power feed to remote radio unit (RRU) in outdoor base station cabinet subject to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed on positive rail with grounded cathode, providing asymmetric protection aligned with telecom grounding architecture. Use Value: Withstands 600W surge while holding rail voltage below 59.3V, protecting -48V DC/DC converters rated for 60V absolute maximum input. | Use Scenario: 48V battery input stage of solar charge controller exposed to PV array surge coupling and grid-switching transients. IC Role / Device Role / Timing Role: Front-end TVS on battery input terminal, coordinated with MOV and fuse to form staged protection network. Use Value: Provides fast, low-capacitance clamping (vs. MOV) to protect synchronous buck controller gate drivers and sense resistors during sub-microsecond transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A-T | Same VRWM (36.8V), lower PPK (600W → 600W), but SMC package (higher thermal mass, RθJA = 40°C/W vs. 75°C/W) | Better thermal performance in high-ambient environments; requires surface-mount layout vs. axial DO-15 through-hole | Select for higher reliability in sealed enclosures >+70°C ambient where DO-15 self-heating limits duty cycle |
| P6KE43CA-T | Bidirectional version: identical VRWM (36.8V), same clamping (59.3V), but symmetrical breakdown (±40.9V) | Required for AC-coupled or bidirectional signal lines (e.g., RS-485, CAN bus) where polarity reversal occurs | Choose only when protecting differential or AC signals; not suitable for DC rail protection due to unnecessary reverse conduction path |
Compared with SMBJ43A-T and P6KE43CA-T, the P6KE43A-T offers optimal cost and manufacturability for through-hole DC rail protection, with verified 10.1A surge handling and legacy board compatibility - whereas SMBJ43A-T improves thermal headroom and P6KE43CA-T enables bidirectional signal clamping.
Availability
P6KE43A-T is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control modules, telecom DC feeder protection, and renewable energy charge controllers requiring stable component supply despite its obsolete status - with remaining factory stock and traceable sourcing.
Supply support for P6KE43A-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 product line, engineered specifically for cost-sensitive, high-volume DC power rail protection in industrial, automotive, and telecom infrastructure applications.
FAQ
Is P6KE43A-T still in active production?
No - Diodes Incorporated has officially discontinued the P6KE43A-T (DS21502 Rev. 20-4 states "OBSOLETE – PART DISCONTINUED"). Aetrix Electronics holds remaining authorized inventory with full traceability and provides last-time-buy support, including documentation and lot-level compliance data.
What is the maximum surge current the P6KE43A-T can handle?
The P6KE43A-T is rated for 10.1A peak pulse current (IPP) at 59.3V clamping voltage under a 1.0ms 8/20μs waveform. This corresponds to its 600W peak pulse power rating. Derating applies above +25°C ambient per Figure 4 in DS21502.
Can P6KE43A-T be used in place of a bidirectional TVS like P6KE43CA-T?
No - P6KE43A-T is unidirectional and conducts only in reverse bias; using it in place of P6KE43CA-T on AC or differential lines risks open-circuit failure during positive half-cycles. Bidirectional replacement requires matching VRWM, VC, and IPP - e.g., P6KE43CA-T itself or SMAJ43CA.
What is the thermal resistance from junction to ambient for P6KE43A-T?
The typical thermal resistance from junction to ambient (RθJA) is 75°C/W when mounted on a standard JEDEC test board (copper land area 40mm²). This value assumes natural convection and must be adjusted for actual PCB copper area, airflow, and nearby heat sources.
P6KE43A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 10.1A
- 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
P6KE43A-T FAQ
1.How can I place an order for P6KE43A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE43A-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 P6KE43A-T reliable?
The price and inventory of P6KE43A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE43A-T is usually 5 days.
3.What payment methods are accepted for P6KE43A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE43A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE43A-T?
P6KE43A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE43A-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 P6KE43A-T?
For technical support, including P6KE43A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE43A-T requirements.
6.How does Aetrix verify that P6KE43A-T is sourced from the original manufacturer or authorized distributors?
All P6KE43A-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 P6KE43A-T meets industry standards.
7.What is the process for return or replacement of P6KE43A-T?
All P6KE43A-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE43A-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 P6KE43A-T part is unused and in its original packaging.
Return procedure for P6KE43A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE43A-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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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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