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Vishay General Semiconductor - Diodes Division P4KE39CA-E3/54
- Part No.:
- P4KE39CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE39CA-E3/54.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,940
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Product details
Overview
P4KE39CA-E3/54 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 a 33.3 V stand-off voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA, 53.9 V maximum clamping voltage (VC) at 7.4 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, sensor interfaces, and automotive ECUs against inductive switching surges.
For engineers reviewing the P4KE39CA-E3/54 datasheet, P4KE39CA-E3/54 pinout, P4KE39CA-E3/54 application, or P4KE39CA-E3/54 equivalent, key selection criteria include bidirectional clamping capability, DO-41 mechanical compatibility, AEC-Q101 qualification status, thermal resistance (RθJL = 66 °C/W), and compliance with IEC 61000-4-2/4-4/4-5 surge immunity requirements.
Technical Context
This device operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR, it avalanches into low-impedance conduction, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at VWM).
Designed for unidirectional and bidirectional configurations, P4KE39CA-E3/54 has no polarity marking (per bidirectional specification), supports 10/1000 μs waveform testing per REA standard, and maintains clamping performance across -55 °C to +175 °C operating junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33.3 V - maximum continuous reverse working voltage before clamping initiates |
| VBR min/max | 37.1 V / 41.0 V at 1 mA - guaranteed avalanche onset range under standardized test current |
| VC @ IPPM | 53.9 V at 7.4 A - clamped voltage during 10/1000 μs surge, defining protected circuit's max overvoltage exposure |
| PPPM | 400 W - peak transient power handling capacity, enabling robust protection against common ESD and lightning-induced surges |
| TJ max | +175 °C - extended junction temperature rating supporting under-hood automotive and industrial environments |
| RθJL | 66 °C/W - thermal resistance from junction to lead, critical for estimating temperature rise under repetitive surge conditions |
| AEC-Q101 | Qualified - validated for automotive electronics per stress-test requirements including HTOL, TCT, and ESD |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy body with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node for bidirectional conduction path | No physical marking - symmetrical construction enables identical clamping in both directions |
| Cathode | Current exit terminal in forward bias; forms dual avalanche junction with anode | No color band or polarity indicator - distinguishes bidirectional P4KE39CA from unidirectional P4KE39A |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over temperature and lifetime |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-earth) surge immunity without derating |
| AEC-Q101 qualification | Validated for automotive powertrain, body control, and ADAS modules requiring high-reliability transient suppression |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, suitable for high-vibration and long-life industrial deployments |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and inductive switching transients in vehicle wiring harnesses. IC Role / Device Role / Timing Role: Shunt TVS element placed across power input pins of MCU or CAN transceiver. Use Value: Clamps transients up to 53.9 V within nanoseconds, preventing latch-up or gate oxide damage in downstream ICs rated for ≤40 V absolute maximum. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC analog input cards. IC Role / Device Role / Timing Role: Bidirectional clamping device on 4–20 mA current loop or 0–10 V signal line. Use Value: Maintains signal integrity by limiting overvoltage to ≤53.9 V while adding <1 pF capacitance, avoiding bandwidth degradation. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Inputs |
Use Scenario: Secondary-level protection on DSL or Ethernet PHY interface power rails exposed to induced lightning surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed after primary GDT or MOV, before DC-DC converter input. Use Value: Provides precise 33.3 V hold-off with 53.9 V clamping, enabling tighter margin design than generic 36 V TVS devices. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Across-motor terminals or across H-bridge supply rails to clamp commutation spikes. Use Value: Handles 7.4 A peak surge current per pulse, surviving repeated motor startup events without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | DO-214AA package; 36 V VWM; 58.1 V VC @ 6.9 A; 600 W PPPM | Higher power rating but larger footprint; lower clamping ratio (VC/VWM = 1.61 vs. 1.62) | Select SMBJ36CA when board space allows larger SMD package and higher surge margin is required. |
| 1.5KE39CA | DO-201AD package; same VWM/VBR/VC specs; 1500 W PPPM; higher IFSM (125 A) | Through-hole alternative with 3.75× higher peak power; requires larger pad layout and manual assembly | Choose 1.5KE39CA for legacy through-hole designs needing higher single-pulse energy absorption. |
Compared with P4KE39CA-E3/54, SMBJ36CA offers surface-mount convenience and higher power but increases PCB area by ~300 %; 1.5KE39CA retains axial DO-style mounting while delivering 3.75× more pulse energy - making it preferable for high-energy industrial motor drives where DO-41 thermal limits may be exceeded.
Availability
P4KE39CA-E3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4KE39CA-E3/54 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The P4KE series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for cost-effective, high-volume transient suppression in automotive, industrial, and consumer power/signal lines where DO-41 form factor and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of P4KE39CA-E3/54 under standard 10/1000 μs surge conditions?
The P4KE39CA-E3/54 exhibits a maximum clamping voltage (VC) of 53.9 V when subjected to its rated peak pulse current of 7.4 A using the 10/1000 μs waveform. This value is measured per REA-defined test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The clamping performance remains consistent across the full operating temperature range of -55 °C to +175 °C.
Is P4KE39CA-E3/54 suitable for automotive applications?
Yes, P4KE39CA-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its glass-passivated junction, -55 °C to +175 °C operating temperature range, and DO-41 mechanical robustness meet requirements for engine control units, body electronics, and infotainment power inputs. The E3 suffix confirms RoHS compliance and JESD 201 Class 1A whisker resistance - essential for vibration-prone vehicle environments.
How does P4KE39CA-E3/54 differ from unidirectional P4KE39A?
P4KE39CA-E3/54 is bidirectional with symmetrical avalanche behavior in both polarities and no cathode marking, whereas P4KE39A is unidirectional with a visible cathode band and conducts only in reverse bias. Electrically, P4KE39CA-E3/54 has identical VWM (33.3 V), VBR (37.1–41.0 V), and VC (53.9 V) ratings but lacks forward voltage (VF) specification since it does not conduct continuously in either direction.
What is the thermal resistance of P4KE39CA-E3/54, and why does it matter?
P4KE39CA-E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W. This parameter determines how much the junction temperature rises above lead temperature during surge conduction. For example, dissipating 400 W peak power for 1 ms results in ~26 °C instantaneous rise - critical for assessing safe repetition rates and long-term reliability in thermally constrained layouts.
Can P4KE39CA-E3/54 replace P4KE36CA in an existing design?
P4KE39CA-E3/54 can serve as a functional upgrade to P4KE36CA in many cases: its VWM increases from 30.8 V to 33.3 V and VC from 49.9 V to 53.9 V, offering higher standoff and slightly elevated clamping. However, verify that the protected circuit's absolute maximum voltage rating accommodates the +3.5 V increase in VC, especially in 3.3 V or 5 V logic domains where margin is tight.
P4KE39CA-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 7.4A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE39CA-E3/54 FAQ
1.How can I place an order for P4KE39CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE39CA-E3/54 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 P4KE39CA-E3/54 reliable?
The price and inventory of P4KE39CA-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE39CA-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE39CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE39CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE39CA-E3/54?
P4KE39CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE39CA-E3/54 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 P4KE39CA-E3/54?
For technical support, including P4KE39CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE39CA-E3/54 requirements.
6.How does Aetrix verify that P4KE39CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE39CA-E3/54 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 P4KE39CA-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE39CA-E3/54?
All P4KE39CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE39CA-E3/54, 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 P4KE39CA-E3/54 part is unused and in its original packaging.
Return procedure for P4KE39CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE39CA-E3/54 Tags
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