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Taiwan Semiconductor Corporation P6KE43A
- Part No.:
- P6KE43A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE43A.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:6,306
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Product details
Overview
P6KE43A from Taiwan Semiconductor 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 43V nominal breakdown voltage (VBR = 40.9–45.2 V at 1 mA), 36.8 V maximum standoff voltage (VWM), 59.3 V clamping voltage at 10.6 A peak surge current, and DO-204AC (DO-15) axial package - used in automotive ECU input protection and industrial sensor interface circuits.
For engineers reviewing the P6KE43A datasheet, P6KE43A pinout, P6KE43A application, or P6KE43A equivalent, key selection criteria include clamping performance under 10/1000 µs surges, low leakage (<1 µA at VWM), thermal stability up to 175°C junction temperature, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The P6KE43A operates as a silicon avalanche diode with fast response time (<1.0 ps from 0 V to VBR), low dynamic impedance, and stable breakdown characteristics across temperature (0.101 %/°C VBR coefficient). Its unidirectional configuration enables polarity-sensitive protection on positive-rail circuits without reverse conduction.
It complies with ANSI/IEEE C62.35 for transient suppression, supports non-repetitive 600W peak pulse power at 10/1000 µs waveform, and is rated for 100 A forward surge current (IFSM, 8.3 ms half-sine) - confirming robustness against inductive switching transients and load dump events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1 mA - defines precise avalanche onset window for predictable clamping initiation |
| VWM | 36.8 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| VC @ IPP | 59.3 V at 10.6 A - clamping voltage during 10/1000 µs surge; determines protected circuit's peak stress level |
| PPK | 600 W - peak pulse power handling per 10/1000 µs waveform; validates surge immunity in IEC 61000-4-5 Level 4 |
| ID @ VWM | <1 µA - ultra-low reverse leakage ensures minimal standby power loss and signal integrity in high-impedance nodes |
| TJ max | +175 °C - extended junction temperature rating enables use in under-hood automotive and high-ambient industrial environments |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with UL 94V-0 molding and tin-plated leads for reliable solderability |
Pinout & Package
DO-204AC (DO-15) axial package with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance. Polarity is unidirectional: banded end is cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Ground reference terminal | Connected to system ground or low-side return path; carries full surge current during clamping |
| Cathode (banded end) | Protected line terminal | Connected to input rail or signal line being protected; reverse-biased during normal operation, avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements |
| 600W 10/1000µs surge rating | Withstands IEC 61000-4-5 Level 4 (4 kV) surges without degradation when properly mounted |
| Clamping voltage ≤59.3 V | Limits downstream IC stress to safe levels during 10.6 A transients - critical for 3.3 V/5 V logic interface protection |
| Leakage <1 µA at 36.8 V | Preserves battery life in always-on systems and avoids false triggering in high-impedance sensor bias networks |
| Fast response <1.0 ps | Engages before sensitive components experience damaging voltage overshoot - essential for protecting high-speed interfaces |
Applications
| Automotive Power Input Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery-fed ECU inputs exposed to load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of LDO regulators and microcontroller power pins. Use Value: Clamps peak voltage to ≤59.3 V, preventing damage to 40 V-rated input stages while maintaining <1 µA quiescent leakage. | Use Scenario: 4–20 mA current loop transmitters interfacing with PLC analog inputs in factory automation. IC Role / Device Role / Timing Role: Bidirectional protection (via paired P6KE43A devices) on loop supply and signal lines against EFT bursts (IEC 61000-4-4). Use Value: Limits transient-induced offset errors and prevents latch-up in op-amps and ADC front-ends during 5 kV EFT events. |
| LED Driver Overvoltage Clamp | DC Power Rail Surge Suppression |
Use Scenario: Constant-current LED drivers in street lighting exposed to lightning-induced surges on AC mains-derived DC bus. IC Role / Device Role / Timing Role: Unidirectional TVS placed across output capacitor to absorb inductive kickback and line transients. Use Value: Absorbs 600 W pulses without failure, preserving driver MOSFET gate oxide integrity and enabling >100,000 surge cycles lifetime. | Use Scenario: 24 V industrial control cabinet power distribution feeding multiple I/O modules. IC Role / Device Role / Timing Role: Point-of-load TVS on main 24 V rail to protect downstream DC-DC converters and communication ICs. Use Value: Maintains rail integrity during 10/1000 µs surges up to 10.6 A, reducing need for redundant filtering and lowering BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ43A | Same DO-214AC (SMA) package; 43 V VBR (40.9–45.2 V), 59.3 V VC @ 10.6 A, but lower PPK (400 W) | Not AEC-Q101 qualified; suitable for commercial/industrial only | Select when space-constrained PCB layout favors surface-mount and automotive qualification is not required |
| ON Semiconductor 1.5KE43A | Same DO-201AD package; identical VBR, VWM, VC specs, but higher PPK (1500 W) and larger footprint | Higher surge margin for infrequent extreme events (e.g., utility grid switching); less thermally efficient at high ambient | Select when legacy through-hole compatibility is needed and 1500 W headroom justifies added board area and thermal mass |
Compared with SMAJ43A and 1.5KE43A, the P6KE43A delivers optimal balance of AEC-Q101 compliance, 600 W surge capability, and DO-15 form factor - making it preferred for cost-sensitive, space-constrained automotive and industrial power rail protection where 600 W meets IEC/ISO requirements.
Availability
P6KE43A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor transmitters, LED driver modules, and DC power distribution systems requiring stable component supply and long-term lifecycle support.
Supply support for P6KE43A 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and thyristors - with global distribution and AEC-Q101 validation capabilities.
The P6KE series targets cost-effective, high-reliability transient suppression in automotive, industrial, and consumer power systems - emphasizing robust surge handling, tight parameter tolerances, and RoHS/halogen-free compliance.
FAQ
What is the maximum clamping voltage of the P6KE43A under standard surge conditions?
The P6KE43A has a maximum clamping voltage (VC) of 59.3 V at 10.6 A peak pulse current (IPP), measured under the standardized 10/1000 µs waveform. This value ensures downstream 40 V-rated components remain within safe operating limits during transient events, and is confirmed in TSC's P2203 datasheet Section 2, Electrical Specifications table for P6KE43A.
Is the P6KE43A suitable for automotive applications?
Yes, the P6KE43A is AEC-Q101 qualified (as indicated by the "H" suffix option in ordering codes, e.g., P6KE43AH), validating its reliability under automotive temperature cycling, humidity, mechanical shock, and lifetime surge stress. While the base P6KE43A part number itself does not carry the "H", TSC explicitly lists AEC-Q101 qualification for the P6KE series excluding only the lowest-voltage variants (P6KE6V8A–P6KE9V1A), confirming P6KE43A's eligibility.
What is the standoff voltage (VWM) rating for the P6KE43A?
The P6KE43A has a maximum working peak reverse voltage (VWM) of 36.8 V, meaning it can be continuously applied across the device in reverse bias without exceeding 1 µA leakage current. This provides a 6.2 V design margin below the minimum breakdown voltage (40.9 V), ensuring stable operation in 36 V nominal systems such as 24 V automotive or industrial DC rails.
Does the P6KE43A have bidirectional capability?
No, the P6KE43A is a unidirectional TVS diode - intended for polarity-specific protection on positive-rail circuits. For bidirectional protection, TSC offers the P6KE43CA variant (with "CA" suffix), which provides symmetrical clamping in both directions. The "A" suffix in P6KE43A denotes tighter VBR tolerance (±5%), not bidirectionality.
What package type does the P6KE43A use, and what are its mounting considerations?
The P6KE43A uses the DO-204AC (DO-15) axial leaded package with 0.400 g mass and tin-plated leads compliant with J-STD-002. For thermal reliability, TSC specifies derating above 25°C ambient per Fig.2 and recommends mounting on 5 × 5 mm copper pads per lead to sustain 5 W steady-state dissipation at 75°C - critical for high-duty-cycle surge environments.
P6KE43A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
P6KE43A FAQ
1.How can I place an order for P6KE43A through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE43A 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 reliable?
The price and inventory of P6KE43A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE43A is usually 5 days.
3.What payment methods are accepted for P6KE43A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE43A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE43A?
P6KE43A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE43A 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?
For technical support, including P6KE43A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE43A requirements.
6.How does Aetrix verify that P6KE43A is sourced from the original manufacturer or authorized distributors?
All P6KE43A 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 meets industry standards.
7.What is the process for return or replacement of P6KE43A?
All P6KE43A units undergo pre-shipment inspection (PSI). If there is an issue with P6KE43A, 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 part is unused and in its original packaging.
Return procedure for P6KE43A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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