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Taiwan Semiconductor Corporation P4KE33CA A0G
- Part No.:
- P4KE33CA A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE33CA A0G.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:14,960
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Product details
Overview
P4KE33CA A0G from Taiwan Semiconductor is a bidirectional 400W transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 33V nominal standoff voltage, 47.7V maximum clamping voltage at 8.8A peak pulse current, and DO-204AL (DO-41) axial package - deployed in automotive lighting control modules, industrial PLC I/O protection, and PoE-powered device interfaces.
For engineers reviewing the P4KE33CA A0G datasheet, P4KE33CA A0G pinout, P4KE33CA A0G application, or P4KE33CA A0G equivalent, key selection criteria include bidirectional clamping symmetry, low leakage (<1 µA @ 26.8 V), fast response (<5 ns), UL 94V-0 molding compound compliance, and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
The P4KE33CA A0G operates as a bidirectional avalanche diode with symmetrical breakdown characteristics in both polarities, enabling robust ESD and EFT protection without polarity sensitivity. Its 400W peak pulse power rating (10/1000 µs waveform) and 175°C maximum junction temperature support operation in thermally constrained environments.
Clamping performance is defined by a maximum VC of 47.7V at IPPM = 8.8A, with VBR min/max of 29.7V–36.3V at 1mA test current. Temperature coefficient of VBR is +0.098%/°C, ensuring predictable voltage drift across operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26.8 V - Maximum continuous reverse working voltage before significant leakage; sets upper limit for protected circuit DC bias. |
| VBR (min/max) | 29.7 V / 36.3 V @ 1 mA - Breakdown onset range; defines minimum overvoltage threshold for clamping activation. |
| VC @ IPPM | 47.7 V @ 8.8 A - Clamped voltage during 400W surge; determines worst-case voltage seen by downstream ICs. |
| PPK | 400 W - Peak pulse power handling per 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | <1 µA - Reverse leakage at rated standoff; ensures minimal quiescent power loss and signal integrity in high-impedance nodes. |
| TJ max | 175 °C - Maximum junction temperature; enables use in under-hood automotive or enclosed industrial enclosures. |
| Package | DO-204AL (DO-41) - Axial-leaded through-hole package with tin-plated leads; compatible with wave soldering and manual rework. |
Pinout & Package
DO-204AL (DO-41) axial package with two unmarked leads; bidirectional construction means no anode/cathode polarity - terminals are functionally interchangeable. Molding compound meets UL 94V-0; weight ≈ 0.300 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Surge current path | Both terminals conduct identically during positive or negative transients; no orientation required during PCB placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions - eliminates need for polarity-aware layout or duplicate protection on differential lines. |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and lighting - supports PPAP documentation requirements. |
| Fast response time | <5 ns turn-on - limits transient energy delivery to protected ICs before clamping engages, reducing risk of latch-up or gate oxide damage. |
| UL recognition | UL File #E-326243 - certifies flammability (UL 94V-0), electrical safety, and long-term reliability for end-equipment certification. |
| Halogen-free | Complies with IEC 61249-2-21 - meets environmental compliance mandates for RoHS and REACH without compromising thermal or electrical performance. |
Applications
| Automotive LED Headlamp Drivers | Industrial PLC Digital Input Modules |
|---|---|
Use Scenario: Protecting MOSFET gate drivers and current-sense amplifiers from load-dump and jump-start transients in 12V/24V vehicle lighting systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rail and ground to clamp ±100V spikes within 5 ns. Use Value: Prevents gate oxide rupture in 40V-rated logic-level MOSFETs by limiting rail voltage to ≤47.7V during 400W surges. |
Use Scenario: Shielding 24V digital input optocouplers and microcontrollers from inductive kickback when switching solenoids or relays. IC Role / Device Role / Timing Role: Standoff voltage (26.8V) exceeds nominal 24V supply while clamping transients before controller reset thresholds are exceeded. Use Value: Enables reliable operation without external RC snubbers or varistors, reducing BOM count and board space. |
| IEEE 802.3af/at PoE PD Interfaces | Smart Building Sensor Node Power Inputs |
Use Scenario: Safeguarding PoE-powered devices (e.g., IP cameras, VoIP phones) against Ethernet cable-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Placed across PSE-provided 44–57V DC supply lines to absorb common-mode surges up to 400W. Use Value: Maintains IEEE 802.3 compliance by limiting clamped voltage below 60V - preserving isolation barrier integrity and secondary-side regulator headroom. |
Use Scenario: Protecting battery-backed environmental sensors (temperature/humidity/CO₂) from ESD events during field installation or maintenance. IC Role / Device Role / Timing Role: Low-leakage (<1 µA) operation preserves multi-year battery life while providing <5 ns response to human-body-model (HBM) discharges. Use Value: Eliminates need for separate ESD diodes and reduces standby current budget impact versus higher-leakage alternatives. |
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; 400W rating; VBR 29.7–36.3V; VC = 53.3V @ 7.5A - 11.7% higher clamping voltage than P4KE33CA A0G. | Surface-mount only; requires reflow-compatible layout; less suitable for through-hole legacy designs or high-vibration mechanical mounting. | Select when board space is constrained and SMT assembly is available; verify clamping margin against downstream IC absolute maximum ratings. |
| ON Semiconductor 1.5KE33CA | Higher 1500W rating; DO-201AD package; VBR 29.7–36.3V; VC = 53.3V @ 28.3A - same clamping voltage but 5.7× higher surge capacity and larger footprint. | Designed for primary-side AC line protection or heavy-industrial motor drives; over-spec'd for typical 24V/48V DC applications. | Choose only if system-level surge testing exceeds IEC 61000-4-5 Level 4; otherwise, P4KE33CA A0G offers optimal cost, size, and performance balance. |
Compared with SMAJ33CA and 1.5KE33CA, P4KE33CA A0G delivers tighter clamping (47.7V vs. 53.3V), through-hole DO-41 compatibility for mechanical robustness, and AEC-Q101 qualification - making it the preferred choice for automotive and industrial DC power rail protection where precision clamping and reliability are prioritized over raw surge capacity or miniaturization.
Availability
P4KE33CA A0G is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O protection, and PoE-powered device interfaces requiring stable component supply, long-lifecycle availability, and AEC-Q101-compliant sourcing.
Supply support for P4KE33CA A0G 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, serving automotive, industrial, and consumer markets since 1979.
The P4KE series is part of TSC's AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient immunity in harsh-environment DC power systems - emphasizing low clamping voltage, repeatable surge endurance, and automotive-grade process control.
FAQ
What does the "CA" suffix mean in P4KE33CA A0G?
The "CA" suffix denotes bidirectional configuration - meaning the P4KE33CA A0G provides symmetrical clamping for both positive and negative transients, unlike unidirectional "C" variants. This eliminates polarity concerns during placement and supports protection of AC-coupled or differential signal paths. The P4KE33CA A0G achieves identical VBR and VC values in either direction, confirmed per TSC datasheet Section 2.
Is P4KE33CA A0G RoHS and halogen-free compliant?
Yes, P4KE33CA A0G is fully RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants or chlorine-based additives, and lead content is below 1000 ppm. This compliance is verified in TSC's material declarations and reflected in the device's green compound marking ('G' in A0G suffix).
How does P4KE33CA A0G differ from the "A" grade variant P4KE33A A0G?
P4KE33CA A0G is bidirectional with symmetric clamping, whereas P4KE33A A0G is unidirectional and optimized for DC rail protection with cathode band marking. Their VBR ranges differ: P4KE33CA A0G specifies 29.7–36.3V (bidirectional), while P4KE33A A0G lists 31.4–34.7V (anode-to-cathode only). Clamping voltage also differs - 47.7V vs. 45.7V - due to structural asymmetry in unidirectional design.
Can P4KE33CA A0G be used in place of P4KE33C A0G?
No - P4KE33CA A0G and P4KE33C A0G are not interchangeable. P4KE33C A0G is unidirectional with cathode identification, while P4KE33CA A0G is bidirectional with no polarity marking. Substituting one for the other risks incomplete protection on reverse-polarity transients or misalignment in automated optical inspection (AOI) systems calibrated for cathode-band detection.
What is the maximum allowable mounting temperature for P4KE33CA A0G during wave soldering?
P4KE33CA A0G supports standard wave soldering per J-STD-002, with peak temperature not exceeding 260°C for ≤10 seconds and preheat ramp rate ≤3°C/s. The pure tin-plated leads and UL 94V-0 epoxy ensure mechanical and electrical integrity post-soldering. Thermal derating above 75°C ambient is defined in Fig.2 of the TSC datasheet, with 1W steady-state dissipation at TL = 75°C.
P4KE33CA A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- P4KE
- Packaging:
- Cut Tape (CT)
- 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):
- 9A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE33CA A0G FAQ
1.How can I place an order for P4KE33CA A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE33CA A0G 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 P4KE33CA A0G reliable?
The price and inventory of P4KE33CA A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE33CA A0G is usually 5 days.
3.What payment methods are accepted for P4KE33CA A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE33CA A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE33CA A0G?
P4KE33CA A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE33CA A0G 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 P4KE33CA A0G?
For technical support, including P4KE33CA A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE33CA A0G requirements.
6.How does Aetrix verify that P4KE33CA A0G is sourced from the original manufacturer or authorized distributors?
All P4KE33CA A0G 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 P4KE33CA A0G meets industry standards.
7.What is the process for return or replacement of P4KE33CA A0G?
All P4KE33CA A0G units undergo pre-shipment inspection (PSI). If there is an issue with P4KE33CA A0G, 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 P4KE33CA A0G part is unused and in its original packaging.
Return procedure for P4KE33CA A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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