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Diodes Incorporated P6KE43CA-T
- Part No.:
- P6KE43CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE43CA-T.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:5,535
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Product details
Overview
P6KE43CA-T from Diodes Incorporated is a bidirectional 600W transient voltage suppressor (TVS) diode in DO-15 package, designed for overvoltage protection of DC power lines and signal interfaces. 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 (IPP), and fast response time for ESD and surge suppression in industrial power supplies.
For engineers reviewing the P6KE43CA-T datasheet, P6KE43CA-T pinout, P6KE43CA-T application, or P6KE43CA-T equivalent, this part serves as a leaded, unidirectional/bidirectional TVS solution with verified clamping performance, thermal derating curves, and AEC-Q200-compatible manufacturing - critical for automotive body electronics, industrial I/O protection, and legacy power rail hardening.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<5 µA @ VRWM) under steady-state conditions.
The device delivers 600W peak pulse power (tP = 1.0 ms, 10/1000 µs waveform) with clamping voltage tightly bounded at 59.3V, limiting downstream voltage stress during 10.1A transients. Thermal resistance from junction to ambient is 75°C/W, supporting operation up to +175°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - Sustains single 1.0 ms transient surges without failure, suitable for IEC 61000-4-5 Level 3/4 surge testing. |
| Reverse Standoff Voltage (VRWM) | 36.8 V - Maximum continuous DC or RMS voltage before significant leakage; sets operating margin below breakdown. |
| Breakdown Voltage (VBR) | 40.9 V min @ 1.0 mA - Confirmed avalanche initiation threshold; ensures reliable turn-on before clamping voltage exceeds protected IC limits. |
| Clamping Voltage (VC) | 59.3 V max @ 10.1 A - Actual voltage seen by protected circuit during worst-case surge; defines absolute overvoltage ceiling. |
| Peak Pulse Current (IPP) | 10.1 A - Maximum non-repetitive surge current the device safely shunts while maintaining VC ≤ 59.3 V. |
| Junction Temperature Range | –55°C to +175°C - Enables deployment in under-hood automotive, industrial motor drives, and outdoor power equipment. |
Pinout & Package
Package: DO-15 molded plastic case (UL 94V-0), 0.4 g weight, with axial leads. Cathode band marking omitted for bidirectional variants; type number only marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No polarity dependence - either terminal serves as cathode or anode depending on transient polarity; enables AC line or differential signal protection. |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse rating | Supports robust immunity to 10/1000 µs surges per IEC 61000-4-5, reducing need for cascaded protection stages. |
| Glass-passivated die construction | Ensures long-term parameter stability and low parametric drift across temperature and lifetime. |
| RoHS-compliant lead finish | Meets EU Directive 2011/65/EU with full exemption documentation; compatible with standard SnPb and lead-free reflow profiles. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during fast transients, improving safety margin for 3.3V/5V/12V logic and analog front-ends. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24V DC input channels on programmable logic controller backplanes exposed to load dump and inductive switching noise. IC Role / Device Role: Primary overvoltage clamp placed upstream of optocoupler inputs and level-shifting buffers. Use Value: Limits transient voltage to ≤59.3V, preventing damage to 30V-rated interface ICs and ensuring >2× margin above 24V nominal rail. |
Use Scenario: LIN bus and sensor supply lines in door modules subject to battery reversal and jump-start surges. IC Role / Device Role: Bidirectional clamping element protecting MCU GPIOs and analog sensor conditioners. Use Value: Symmetric clamping eliminates need for dual unidirectional devices; withstands ±10.1A pulses without degradation. |
| AC-DC Adapter Secondary Side | Legacy RS-485 Transceiver Protection |
Use Scenario: Output rectifier circuits in offline SMPS where secondary-side transients couple into low-voltage DC outputs. IC Role / Device Role: Secondary-rail TVS placed between +VOUT and GND to absorb reflected surge energy. Use Value: Clamps 36.8V standby rail to 59.3V during 1.0 ms surges, preserving output capacitor and post-regulator integrity. |
Use Scenario: Termination points of RS-485 data lines in factory automation systems subjected to ESD and lightning-induced surges. IC Role / Device Role: Line-to-line and line-to-ground TVS pair protecting transceiver ESD structures. Use Value: Bidirectional capability allows single-device placement across differential pairs; 59.3V clamping prevents latch-up in 5V transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Same VRWM (36.8V) and VC (59.3V), but SMB package (surface-mount); 600W rating retained. | Requires PCB rework for SMT assembly; lacks axial-leaded through-hole compatibility. | Select when board space is constrained and automated placement is preferred over manual or wave-soldering. |
| P6KE43A | Unidirectional variant; identical VRWM, VBR, VC, and IPP specs; differs only in polarity marking and cathode band. | Not suitable for AC or floating differential signals; requires correct orientation during placement. | Choose only for DC-only rails where polarity is fixed and cost-sensitive through-hole mounting is required. |
Compared with SMBJ43CA and P6KE43A, P6KE43CA-T provides bidirectional surge handling in a legacy-compatible DO-15 through-hole package - ideal for repair, retrofit, and high-reliability industrial designs where leaded mechanical robustness and polarity-agnostic protection are mandatory.
Availability
P6KE43CA-T is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and AC-DC adapter secondary-side surge suppression requiring stable component supply and long-lifecycle support.
Supply support for P6KE43CA-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, specializing in high-reliability protection, power management, and signal integrity solutions.
P6KE43CA-T belongs to the P6KE series of 600W axial-leaded TVS diodes, engineered for cost-effective, high-energy transient suppression in legacy and automotive-qualified power systems.
FAQ
Is P6KE43CA-T still in active production?
No - Diodes Incorporated has officially discontinued the P6KE43CA-T (and entire P6KE series) as of August 2024. Aetrix Electronics maintains limited legacy stock and supports last-time-buy programs with full traceability and extended warranty for qualified industrial and automotive customers.
What is the difference between P6KE43CA-T and P6KE43A-T?
P6KE43CA-T is bidirectional (no polarity marking), while P6KE43A-T is unidirectional (cathode band marked). Both share identical electrical specs: VRWM = 36.8V, VBR = 40.9V min, VC = 59.3V max, and IPP = 10.1A. The "C" suffix denotes bidirectional functionality per Diodes' datasheet Note 4.
Can P6KE43CA-T be used in automotive applications?
Yes - it is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While not AEC-Q200 qualified out-of-box, Diodes offers automotive-grade change control upon request; many Tier 1 suppliers use it in body electronics with internal qualification.
What is the thermal derating behavior above +25°C ambient?
Per Figure 4 in DS21502 Rev. 20-4, P6KE43CA-T's peak pulse power derates linearly: 100% at +25°C, ~75% at +75°C, and ~50% at +125°C ambient. Steady-state power dissipation drops from 5.0W at TL = +75°C to zero at +175°C per Figure 5.
P6KE43CA-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:
- -
- Bidirectional Channels:
- 1
- 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
P6KE43CA-T FAQ
1.How can I place an order for P6KE43CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE43CA-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 P6KE43CA-T reliable?
The price and inventory of P6KE43CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE43CA-T is usually 5 days.
3.What payment methods are accepted for P6KE43CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE43CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE43CA-T?
P6KE43CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE43CA-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 P6KE43CA-T?
For technical support, including P6KE43CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE43CA-T requirements.
6.How does Aetrix verify that P6KE43CA-T is sourced from the original manufacturer or authorized distributors?
All P6KE43CA-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 P6KE43CA-T meets industry standards.
7.What is the process for return or replacement of P6KE43CA-T?
All P6KE43CA-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE43CA-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 P6KE43CA-T part is unused and in its original packaging.
Return procedure for P6KE43CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE43CA-T Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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