My Inquiry
My Account
Taiwan Semiconductor Corporation P6KE20CAH
- Part No.:
- P6KE20CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE20CAH.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,594
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6KE20CAH from Taiwan Semiconductor is a bidirectional 600W transient voltage suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It features a 20V nominal breakdown voltage (VBR min/max: 18.0–22.0V), 16.2V stand-off voltage (VWM), clamps to ≤29.1V at 21A peak pulse current, and operates within -55°C to +175°C junction temperature range. It is AEC-Q101 qualified and housed in DO-204AC (DO-15) package.
For engineers reviewing the P6KE20CAH datasheet, P6KE20CAH pinout, P6KE20CAH application, or P6KE20CAH equivalent, this device serves as a robust, fast-response (≤5.0ns) bidirectional clamping solution for ESD, EFT, and inductive switching transients in 12V/24V automotive subsystems, DC power interfaces, and industrial control I/O protection.
Technical Context
The P6KE20CAH employs a planar passivated silicon junction optimized for low dynamic impedance and stable clamping under 10/1000μs surge waveforms. Its bidirectional configuration enables symmetrical clamping in AC-coupled or floating signal lines without polarity constraints.
It delivers 600W non-repetitive peak pulse power with <1μA reverse leakage above 10V and a VBR temperature coefficient of 0.090%/°C - ensuring predictable voltage drift across automotive temperature ranges. The device meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 20V - defines primary clamping threshold for bidirectional surge suppression |
| Breakdown Voltage (VBR) | 18.0–22.0V @ 1mA - verified clamping onset range under standardized test conditions |
| Stand-off Voltage (VWM) | 16.2V - maximum continuous reverse voltage before significant leakage begins |
| Peak Pulse Power (PPK) | 600W @ 10/1000μs - energy-handling capacity for automotive load-dump and ISO 7637-2 pulses |
| Clamping Voltage (VC) | ≤29.1V @ 21A IPP - actual voltage seen by protected circuit during worst-case surge |
| Junction Temperature Range | -55°C to +175°C - supports under-hood and industrial ambient operation without derating |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking for unidirectional variants; P6KE20CAH is bidirectional and marked per standard polarity convention (cathode band denotes terminal designation per datasheet marking diagram).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (Bidirectional) | Surge current path | Both terminals function identically - no polarity dependency; symmetric clamping in either direction |
| Leads (Tin-plated) | PCB interface | Solderable per J-STD-002; compliant with RoHS and halogen-free (IEC 61249-2-21) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or floating DC rails without external polarity management |
| ≤5.0ns response time | Ensures clamping activation before ESD or EFT transients damage downstream ICs (e.g., CAN transceivers, microcontrollers) |
| Low dynamic impedance | Minimizes voltage overshoot during surge events, improving margin for 3.3V/5V logic-level interfaces |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body electronics, and ADAS modules requiring long-term field stability |
| UL Recognized (E326243) | Confirms safety compliance for end-equipment certification in North American markets |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Primary clamping element placed at board-level input filter stage, shunting surge energy to ground before L-C filtering. Use Value: Clamps to ≤29.1V at 21A, preserving downstream DC-DC converters and MCU power supplies rated for 36V max input. |
Use Scenario: Safeguarding 4–20mA current-loop sensor inputs against EFT bursts (IEC 61000-4-4) and cable coupling noise. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input terminals to clamp both positive and negative transients without polarity concerns. Use Value: Sub-5ns response ensures clamping occurs before transients exceed sensor front-end absolute maximum ratings (±30V typical). |
| LED Driver Output Protection | RS-485 Transceiver Bus Protection |
Use Scenario: Shielding constant-current LED driver outputs from inductive kickback when driving solenoids or relays on shared PCBs. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing flyback energy from inductive loads switched by same supply rail. Use Value: 600W surge rating handles repetitive 100ms inductive spikes common in automotive lighting modules. |
Use Scenario: Providing secondary-level surge immunity on RS-485 bus lines exposed to lightning-induced surges or ground potential differences. IC Role / Device Role / Timing Role: Bidirectional clamping device placed between A/B differential lines and ground to limit common-mode overvoltage. Use Value: Symmetric VBR (18.0–22.0V) ensures balanced clamping on both data lines, preserving signal integrity during ±30V transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | 400W peak power, SMB package (smaller footprint, lower thermal mass) | Limited to lower-energy surges; unsuitable for full ISO 7637-2 Pulse 5a compliance | Select when space-constrained and surge energy is ≤400W (e.g., interior modules with filtered inputs) |
| 1.5KE20CA | 1500W peak power, DO-201AD package (larger, higher thermal inertia) | Over-specified for most 12V systems; requires larger PCB area and higher cost | Select only when legacy designs mandate 1.5kW rating or require extended surge repetition capability |
Compared with SMBJ20CA and 1.5KE20CA, the P6KE20CAH delivers optimal balance of 600W surge handling, AEC-Q101 qualification, DO-15 manufacturability, and cost - making it the preferred choice for new automotive and industrial designs targeting ISO 7637-2 and IEC 61000-4-5 compliance.
Availability
P6KE20CAH is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC analog I/O protection, and LED lighting driver designs requiring stable component supply and AEC-Q101 traceability.
Supply support for P6KE20CAH 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 MOSFETs with global distribution and AEC-Q101 validation capabilities.
The P6KE series was developed specifically for automotive-grade transient suppression, emphasizing robustness under extreme temperature cycling, high surge repetition tolerance, and compatibility with automated SMT and through-hole assembly processes.
FAQ
What does the "CA" suffix indicate in P6KE20CAH?
The "CA" suffix in P6KE20CAH denotes a bidirectional configuration - meaning the device provides symmetrical clamping in both polarities, unlike unidirectional "A"-suffixed variants. This eliminates polarity-dependent placement errors and simplifies layout for AC-coupled or floating circuits. The P6KE20CAH maintains identical electrical specs in both directions, including VBR (18.0–22.0V) and VC (≤29.1V).
Is P6KE20CAH suitable for ISO 7637-2 Pulse 5a compliance?
Yes, the P6KE20CAH is rated for 600W peak pulse power at the 10/1000μs waveform, which aligns with the energy requirements of ISO 7637-2 Pulse 5a (load dump). Its clamping voltage of ≤29.1V at 21A ensures protected downstream components remain within safe operating limits. AEC-Q101 qualification further validates its suitability for automotive power rail applications subject to this standard.
How does the "H" suffix affect P6KE20CAH's qualification status?
The "H" suffix in P6KE20CAH explicitly indicates AEC-Q101 qualification - confirmed by Taiwan Semiconductor's documentation and UL file E326243. This distinguishes it from non-H variants (e.g., P6KE20CA), which lack formal automotive reliability validation. The "H" version undergoes accelerated stress testing including HTOL, TC, and HAST, ensuring long-term performance in under-hood environments.
What is the maximum steady-state power dissipation for P6KE20CAH?
The P6KE20CAH has a steady-state power dissipation (PD) of 5W at TA = 75°C with 9.5mm lead lengths mounted on 5×5 mm copper pads. This rating applies only to continuous DC or low-frequency reverse-bias conditions - not surge events. In normal operation, reverse leakage remains <1μA above 10V, resulting in negligible static power loss.
Can P6KE20CAH be used in place of P6KE20A?
No - P6KE20CAH and P6KE20A are functionally distinct: P6KE20A is unidirectional with anode/cathode polarity, while P6KE20CAH is bidirectional and polarity-insensitive. Substituting one for the other risks incorrect clamping behavior or open-circuit failure. Always verify configuration suffix (A vs. CA) and consult the Taiwan Semiconductor P6KE ordering guide before replacement.
P6KE20CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 22A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE20CAH FAQ
1.How can I place an order for P6KE20CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE20CAH 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 P6KE20CAH reliable?
The price and inventory of P6KE20CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE20CAH is usually 5 days.
3.What payment methods are accepted for P6KE20CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE20CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE20CAH?
P6KE20CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE20CAH 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 P6KE20CAH?
For technical support, including P6KE20CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE20CAH requirements.
6.How does Aetrix verify that P6KE20CAH is sourced from the original manufacturer or authorized distributors?
All P6KE20CAH 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 P6KE20CAH meets industry standards.
7.What is the process for return or replacement of P6KE20CAH?
All P6KE20CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE20CAH, 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 P6KE20CAH part is unused and in its original packaging.
Return procedure for P6KE20CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE20CAH 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
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
