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Vishay General Semiconductor - Diodes Division P4KE33CAHE3/53
- Part No.:
- P4KE33CAHE3/53
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE33CAHE3/53.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,551
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Product details
Overview
P4KE33CAHE3/53 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features 31.4 V minimum breakdown voltage (VBR), 28.2 V standoff voltage (VWM), 45.7 V maximum clamping voltage (VC) at 8.8 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P4KE33CAHE3/53 datasheet, P4KE33CAHE3/53 pinout, P4KE33CAHE3/53 application, or P4KE33CAHE3/53 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-41 mechanical dimensions, bidirectional clamping behavior, and real-world use cases in automotive and industrial transient protection circuits.
Technical Context
This device operates as a voltage-clamping protector with symmetrical bidirectional avalanche breakdown, enabling suppression of both positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, critical for consistent clamping under repetitive ESD or load-switching events.
The P4KE33CAHE3/53 is rated for 175 °C maximum junction temperature and exhibits a 0.098 %/°C temperature coefficient of VBR, supporting reliable operation across extended thermal ranges in engine control units and motor drive interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28.2 V - Maximum continuous reverse operating voltage before conduction begins; defines safe working margin below clamping threshold. |
| VBR (min/max) | 31.4 V / 34.7 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC @ IPPM | 45.7 V at 8.8 A - Clamped voltage during 10/1000 μs surge; limits downstream IC stress to safe levels. |
| PPPM | 400 W - Peak pulse power handling capability; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity. |
| IPPM | 8.8 A - Peak pulse current capacity with 10/1000 μs waveform; determines survivability against common lightning-induced surges. |
| TJ max. | 175 °C - Maximum junction temperature; enables deployment in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; body diameter 2.0–2.7 mm, lead length ≥25.4 mm, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). No polarity marking - symmetric bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional avalanche junction | Identical conduction behavior in both directions; no cathode band - eliminates orientation errors during placement. |
| Lead 1 / Lead 2 | Current path terminals | Low-inductance, solderable per J-STD-002; supports manual or automated assembly with 275 °C/10 s max solder dip. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift in harsh environments. |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive port protection without derating. |
| AEC-Q101 qualification | Validated for automotive applications including powertrain and ADAS sensor interfaces requiring zero field failure risk. |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed enclosures - required for compliance in transportation and industrial control cabinets. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin for 3.3 V/5 V logic. |
Applications
| Automotive Sensor Protection | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and temperature/pressure sensors from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across signal line and ground to shunt surge energy before it reaches MCU analog front-end. Use Value: Maintains 28.2 V standoff while clamping to 45.7 V - preserves signal integrity for 3.3 V ADC references and prevents latch-up in LIN transceivers. |
Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from induced surges due to nearby motor switching. IC Role / Device Role / Timing Role: Fast-response voltage clamp installed at terminal block entry point to divert transient energy away from precision op-amp input stages. Use Value: 8.8 A IPPM capacity handles 1 kV/500 Ω surge per IEC 61000-4-5; DO-41 footprint allows direct PCB-level integration without additional layout area. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding RS-485 transceivers in base station backhaul equipment exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary TVS device placed differential-mode across A/B lines and common-mode to ground to suppress both modes simultaneously. Use Value: Symmetrical bidirectional response ensures equal clamping for positive/negative transients - avoids DC bias shift in differential receivers. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers connected to microcontroller GPIOs. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF typical) clamp mounted directly at motor driver output pins to prevent gate oxide damage. Use Value: 400 W rating absorbs repeated 100 ms motor commutation spikes; AEC-Q101 qualification ensures longevity in high-vibration environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | DO-214AA package; 600 W PPPM; lower VC (53.3 V); higher IPPM (11.3 A) | Higher power handling but larger footprint; better suited for board space-constrained designs needing >400 W margin | Select SMBJ33CA when surge test levels exceed IEC 61000-4-5 Level 4 or when thermal dissipation requires surface-mount layout flexibility. |
| 1.5KE33CA | DO-201AD package; same 400 W rating; identical VWM/VBR/VC; higher IFSM (100 A vs. N/A for bidirectional) | Larger body size (5.6 mm diameter); higher thermal mass; not AEC-Q101 qualified | Choose 1.5KE33CA for non-automotive industrial applications where AEC-Q101 is unnecessary and higher surge repetition tolerance is needed. |
Compared with SMBJ33CA and 1.5KE33CA, the P4KE33CAHE3/53 offers AEC-Q101 qualification in the compact DO-41 through-hole package - making it optimal for automotive and space-limited industrial modules where reliability and legacy through-hole assembly coexist.
Availability
P4KE33CAHE3/53 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and telecom line protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4KE33CAHE3/53 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and ruggedized performance.
The P4KE33CAHE3/53 belongs to Vishay's TRANSZORB® TVS family - engineered specifically for robust transient suppression in automotive, industrial, and telecom infrastructure where failure is not an option.
FAQ
What is the breakdown voltage range for P4KE33CAHE3/53?
The P4KE33CAHE3/53 has a minimum breakdown voltage (VBR) of 31.4 V and a maximum of 34.7 V at 1.0 mA test current, per Vishay Document 88365. This 5% tolerance ensures precise clamping onset in bidirectional surge events and aligns with standard 33 V system protection targets. The value is measured under controlled conditions and applies equally in both directions due to its symmetrical construction.
Is P4KE33CAHE3/53 suitable for automotive applications?
Yes, P4KE33CAHE3/53 carries the HE3 suffix indicating AEC-Q101 qualification - validated for automotive-grade reliability including temperature cycling, high-temperature reverse bias, and ESD testing. It is deployed in engine control units, body electronics, and ADAS sensor interfaces where sustained operation from −40 °C to +125 °C ambient is required.
What does the "CA" suffix mean in P4KE33CAHE3/53?
The "CA" suffix in P4KE33CAHE3/53 denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4KE33A), it has no cathode marking and functions identically regardless of polarity applied across its terminals.
How does P4KE33CAHE3/53 compare to P4KE33A in terms of application?
P4KE33CAHE3/53 is bidirectional and used where AC-coupled or dual-polarity transients occur (e.g., RS-485 lines, transformer-coupled interfaces), while P4KE33A is unidirectional and suited for DC-biased rails like 3.3 V or 5 V supplies. The CA version clamps both polarities at 45.7 V, whereas the A version only clamps reverse polarity - making them functionally non-interchangeable without circuit redesign.
What is the maximum clamping voltage of P4KE33CAHE3/53 under surge conditions?
The maximum clamping voltage (VC) of P4KE33CAHE3/53 is 45.7 V at 8.8 A peak pulse current with a 10/1000 μs waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case surge events and is critical for ensuring downstream components (e.g., 3.3 V MCUs or 5 V transceivers) remain within absolute maximum ratings.
P4KE33CAHE3/53 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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):
- 8.8A
- Power - Peak Pulse:
- 400W
- 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-204AL (DO-41)
P4KE33CAHE3/53 FAQ
1.How can I place an order for P4KE33CAHE3/53 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE33CAHE3/53 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 P4KE33CAHE3/53 reliable?
The price and inventory of P4KE33CAHE3/53 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE33CAHE3/53 is usually 5 days.
3.What payment methods are accepted for P4KE33CAHE3/53?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE33CAHE3/53 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE33CAHE3/53?
P4KE33CAHE3/53 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE33CAHE3/53 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 P4KE33CAHE3/53?
For technical support, including P4KE33CAHE3/53 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE33CAHE3/53 requirements.
6.How does Aetrix verify that P4KE33CAHE3/53 is sourced from the original manufacturer or authorized distributors?
All P4KE33CAHE3/53 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 P4KE33CAHE3/53 meets industry standards.
7.What is the process for return or replacement of P4KE33CAHE3/53?
All P4KE33CAHE3/53 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE33CAHE3/53, 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 P4KE33CAHE3/53 part is unused and in its original packaging.
Return procedure for P4KE33CAHE3/53:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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