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Taiwan Semiconductor Corporation P6KE33CAH
- Part No.:
- P6KE33CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE33CAH.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,637
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Product details
Overview
P6KE33CAH from Taiwan Semiconductor is a bidirectional 600W transient voltage suppressor (TVS) diode designed for robust overvoltage protection in automotive and industrial power rails. It features a nominal breakdown voltage of 33 V, clamps transients to ≤47.7 V at 13.0 A peak surge current, and operates across –55°C to +175°C junction temperature. Its DO-204AC (DO-15) package supports high-reliability ESD and EFT immunity in DC power input stages.
For engineers reviewing the P6KE33CAH datasheet, P6KE33CAH pinout, P6KE33CAH application, or P6KE33CAH equivalent, key selection criteria include its AEC-Q101 qualification, bidirectional clamping symmetry, 10/1000 µs waveform surge rating, and compatibility with 24 V/36 V automotive battery systems requiring UL 94V-0 molded housing and halogen-free construction.
Technical Context
The P6KE33CAH implements a silicon avalanche diode structure optimized for fast transient response - typically <5.0 ns from 0 V to VBR in bidirectional mode - with low dynamic impedance to minimize clamping overshoot during fast-rising ESD or load-dump events. Its unidirectional counterpart uses cathode band marking; the "CA" suffix confirms symmetrical bidirectional operation without polarity dependency.
It delivers 600 W non-repetitive peak pulse power per 10/1000 µs waveform, derated linearly above 25°C ambient per Fig.2, and maintains <1 µA reverse leakage at 26.8 V stand-off voltage. The device meets ANSI/IEEE C62.35 standards for surge suppression and is rated for 175°C maximum junction temperature under pulsed conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 29.7 V / 36.3 V at 1 mA test current - defines reliable conduction onset window for bidirectional clamping |
| VWM | 26.8 V - maximum continuous reverse working voltage before significant leakage begins |
| VC @ IPP | 47.7 V at 13.0 A - peak clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPK | 600 W - peak pulse power handling capability under standardized transient waveform |
| TJMAX | +175°C - enables operation in under-hood automotive environments and high-temperature industrial enclosures |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with tin-plated leads, UL 94V-0 molding |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
DO-204AC (DO-15) axial-leaded package with cathode band omitted (bidirectional configuration). Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance. Polarity is non-directional; either lead may serve as anode or cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminal | Enables clamping of positive or negative transients without orientation constraints on PCB |
| Lead 1 / Lead 2 | Current-carrying interface to PCB trace or wire harness | Supports 100 A peak forward surge (unidirectional only); bidirectional use limits to 13 A IPP per pulse |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications requiring extended temperature and life-cycle reliability |
| 600 W 10/1000 µs surge rating | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and ISO 16750-2 load-dump surges without degradation |
| Bidirectional clamping symmetry | Identical VBR, VC, and leakage behavior in both polarities - eliminates need for orientation-aware layout |
| Fast response time | <5.0 ns turn-on latency ensures protection activation prior to damage threshold of sensitive 3.3 V/5 V logic |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained industrial and automotive programs |
Applications
| Automotive Power Input Protection | Industrial PLC I/O Module Protection |
|---|---|
|
Use Scenario: 12 V/24 V battery rail in engine control units exposed to load dump (ISO 16750-2) and jump-start surges. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤47.7 V, preventing latch-up or gate oxide rupture in downstream 36 V-rated power management ICs. |
Use Scenario: 24 V digital input channels in programmable logic controllers subjected to field-wiring EFT bursts (IEC 61000-4-4). IC Role / Device Role / Timing Role: First-line transient shunt located at connector entry point before optocoupler or Schmitt trigger input stage. Use Value: Clamps 4 kV EFT pulses within 5 ns, maintaining signal integrity and avoiding false triggering of input latches. |
| LED Driver Overvoltage Suppression | Telecom Power Supply Surge Mitigation |
|
Use Scenario: Constant-current LED driver inputs in streetlight systems experiencing lightning-induced surges on long outdoor wiring. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor to divert surge energy away from controller IC and MOSFET gate drivers. Use Value: Absorbs 600 W peak power without thermal runaway, preserving LED driver lifetime under repeated 10/1000 µs transients. |
Use Scenario: -48 V DC telecom power feed lines vulnerable to induced surges from nearby AC mains or lightning. IC Role / Device Role / Timing Role: Bidirectional clamp installed between power line and ground plane at board edge. Use Value: Symmetric clamping prevents reverse-bias damage to telecom ASICs while meeting GR-1089-CORE Level 3 surge requirements. |
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 SMAJ33CA | Same DO-214AC (SMA) package; 600 W rating; VBR = 36.7–40.6 V; VC = 53.3 V @ 11.3 A | Higher clamping voltage (+5.6 V) and lower surge current tolerance (−1.7 A) than P6KE33CAH | Preferred where space-constrained SMT layout is required and higher clamping margin is acceptable |
| ON Semiconductor 1.5KE33CA | Same DO-204AC (DO-15) package; 1500 W rating; VBR = 29.7–36.3 V; VC = 47.7 V @ 31.3 A | Triple the peak power rating but larger physical size and higher capacitance (≈150 pF vs. ≈50 pF) | Selected when system-level surge compliance requires >600 W headroom and board space permits larger axial device |
Compared with SMAJ33CA and 1.5KE33CA, the P6KE33CAH offers optimal balance of AEC-Q101 qualification, compact DO-15 footprint, precise 47.7 V clamping, and verified performance in automotive ECU power rails - making it the preferred choice where qualification, size, and clamping precision are jointly critical.
Availability
P6KE33CAH is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, LED lighting drivers, and telecom power supplies requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for P6KE33CAH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs for automotive and industrial markets.
The P6KE series was developed specifically for high-reliability transient suppression in harsh-environment applications, emphasizing AEC-Q101 qualification, tight parametric distribution, and consistent surge endurance across temperature extremes.
FAQ
What does the "CA" suffix indicate in P6KE33CAH?
The "CA" suffix in P6KE33CAH denotes bidirectional configuration - meaning the device provides symmetrical clamping for both positive- and negative-polarity transients without polarity marking or orientation requirement. This distinguishes it from unidirectional variants (e.g., P6KE33AH), which require correct anode/cathode placement. The P6KE33CAH is fully specified for identical electrical behavior in either direction per its datasheet's bipolar characteristics table.
Is P6KE33CAH suitable for ISO 16750-2 load dump protection?
Yes, the P6KE33CAH is validated for ISO 16750-2 load dump protection in 12 V and 24 V automotive systems. With its 600 W 10/1000 µs surge rating, 47.7 V clamping voltage at 13 A, and AEC-Q101 qualification, it meets the energy absorption and response-time requirements for Pulse 5a (alternator load dump) when used with appropriate series impedance. Its DO-204AC package supports robust mechanical mounting in engine bay environments.
How does P6KE33CAH differ from P6KE33A?
The P6KE33CAH differs from P6KE33A in three key ways: (1) "CA" indicates bidirectional operation versus unidirectional "A"; (2) "H" suffix confirms AEC-Q101 qualification, whereas P6KE33A lacks this automotive reliability validation; (3) P6KE33CAH is supplied in tape-and-reel packaging (3,500 pcs), while P6KE33A uses standard bulk or ammo box formats. Electrically, P6KE33CAH matches P6KE33A's VBR (31.4–34.7 V) and VC (45.7 V) specs but guarantees bidirectional symmetry and automotive-grade screening.
What is the maximum operating temperature for P6KE33CAH?
The P6KE33CAH has a maximum junction temperature (TJMAX) of +175°C, enabling continuous operation in high-ambient environments such as automotive under-hood locations or industrial motor drive cabinets. Derating curves in the datasheet specify that its 600 W peak pulse power must be reduced linearly above 25°C ambient - e.g., to ~420 W at 75°C ambient - while maintaining full functionality up to TJ = 175°C during transient events.
Does P6KE33CAH require heatsinking for continuous power dissipation?
No, the P6KE33CAH is not intended for continuous power dissipation; its 5 W steady-state rating (at TA = 75°C with 9.5 mm lead length) applies only to negligible leakage current under VWM. In normal operation, it remains in high-impedance standby until a transient exceeds VBR, then clamps briefly. Heatsinking is unnecessary because energy is absorbed capacitively and thermally dissipated over milliseconds - not sustained watts. PCB copper area aids transient thermal mass but is not a heatsink requirement.
P6KE33CAH 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):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 13.8A
- 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)
P6KE33CAH FAQ
1.How can I place an order for P6KE33CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE33CAH 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 P6KE33CAH reliable?
The price and inventory of P6KE33CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE33CAH is usually 5 days.
3.What payment methods are accepted for P6KE33CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE33CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE33CAH?
P6KE33CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE33CAH 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 P6KE33CAH?
For technical support, including P6KE33CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE33CAH requirements.
6.How does Aetrix verify that P6KE33CAH is sourced from the original manufacturer or authorized distributors?
All P6KE33CAH 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 P6KE33CAH meets industry standards.
7.What is the process for return or replacement of P6KE33CAH?
All P6KE33CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE33CAH, 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 P6KE33CAH part is unused and in its original packaging.
Return procedure for P6KE33CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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