My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4KE43A-E3/54
- Part No.:
- P4KE43A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE43A-E3/54.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,135
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4KE43A-E3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in DO-41 package, designed for clamping inductive switching surges and ESD events on DC power rails and signal lines. It features 400 W peak pulse power (10/1000 μs), 40.9–45.2 V breakdown voltage at 1 mA, 36.8 V stand-off voltage, 1.0 μA max reverse leakage, and clamps to ≤59.3 V at 6.7 A peak pulse current.
For engineers reviewing the P4KE43A-E3/54 datasheet, P4KE43A-E3/54 pinout, P4KE43A-E3/54 application, or P4KE43A-E3/54 equivalent, this device is selected for robust overvoltage protection in automotive body electronics, industrial sensor interfaces, and 24 V DC power input stages where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.32), and AEC-Q101 qualification are required.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 36.8 V), then avalanches sharply at VBR to divert surge current away from downstream ICs. Its glass-passivated junction ensures stable breakdown and low leakage across -55 °C to +175 °C operating range.
The device uses a single PN junction with 66 °C/W junction-to-lead thermal resistance, enabling reliable 400 W pulse handling without heatsinking when lead temperature is maintained ≤75 °C. It complies with JESD 22-B106 (275 °C solder dip) and JESD 201 Class 1A whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 40.9 V / 45.2 V at 1 mA - defines precise avalanche onset window for predictable clamping threshold |
| VWM | 36.8 V - maximum continuous reverse working voltage; must exceed system DC rail by ≥10 % to avoid leakage-induced heating |
| IPPM | 6.7 A (10/1000 μs) - peak surge current it safely clamps without degradation; determines minimum series impedance needed upstream |
| VC | ≤59.3 V at IPPM - clamped voltage seen by protected circuit; must stay below downstream IC absolute maximum rating |
| PPPM | 400 W - peak pulse power handling capability; validates suitability for IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge testing |
| TJ max | +175 °C - enables use in under-hood automotive environments and sealed industrial enclosures without derating |
| RθJL | 66 °C/W - low thermal resistance allows direct PCB trace conduction cooling; supports >1000 surge cycles at rated power |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; cathode indicated by color band on one end. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 intermetallic growth requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential point; establishes clamping reference for unidirectional operation |
| Cathode | Protected line interface | Connected to line being protected (e.g., 24 V supply); avalanche occurs when voltage exceeds VBR relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and <1.0 μA leakage at VWM over full temperature range |
| 400 W peak pulse power (10/1000 μs) | Validates compliance with IEC 61000-4-5 surge immunity for industrial control inputs and automotive power modules |
| AEC-Q101 qualified (E3 suffix variant) | Confirms reliability for automotive applications including body control modules and lighting drivers per stress test requirements |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients (<1 ns response), critical for protecting sensitive gate drivers and ADC references |
| UL 94 V-0 molding compound | Meets flammability safety standards for enclosed power supplies and industrial equipment housings |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V/24 V power input to BCM microcontroller and CAN transceiver exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between VIN and GND, triggered within nanoseconds of overvoltage event. Use Value: Limits transient voltage to ≤59.3 V, preventing latch-up or oxide breakdown in 3.3 V/5 V logic and CAN PHY components. |
Use Scenario: 4–20 mA analog current loop feeding PLC input card, subject to field wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; P4KE43A-E3/54 used in unidirectional configuration on loop supply side. Use Value: Clamps 1 kV/2 Ω surge to safe level while maintaining <1 μA leakage at 24 V, preserving loop accuracy and HART communication integrity. |
| DC Power Supply Input Stage | Motor Drive Gate Driver Protection |
Use Scenario: 48 V DC input to telecom power converter subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary front-end TVS in parallel with bulk capacitor; absorbs energy before reaching downstream rectifiers and controllers. Use Value: Handles 400 W pulses without degradation, enabling compact design with no active crowbar circuitry or MOV supplementation. |
Use Scenario: High-side N-channel MOSFET gate driver supply (15 V) in BLDC inverter, vulnerable to Miller-induced spikes during switching. IC Role / Device Role / Timing Role: Clamp placed between gate driver VDD and local ground to suppress >30 V transients before they damage driver IC inputs. Use Value: Fast response and low VC/VBR ratio (1.32) prevent false turn-on and ensure gate oxide safety margin remains intact. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | DO-214AA package; 600 W PPPM; 43.0–47.5 V VBR; 1.0 μA ID at 36.8 V | Higher power rating and surface-mount form factor; requires PCB rework for replacement | Select SMBJ43A when board space is constrained and surge duty cycle exceeds 0.01 %; not drop-in compatible due to package and thermal profile differences |
| 1.5KE43A | DO-201AD package; 1500 W PPPM; 40.9–45.2 V VBR; same VC (59.3 V) | Higher surge capacity for infrequent but severe events (e.g., utility grid switching); larger footprint and higher cost | Choose 1.5KE43A for mission-critical industrial systems requiring >1000 W surge margin; P4KE43A-E3/54 preferred for cost-sensitive, high-volume automotive ECUs |
Compared with SMBJ43A and 1.5KE43A, the P4KE43A-E3/54 delivers optimal balance of cost, size, and 400 W surge capability for high-volume 24 V automotive and industrial applications-its DO-41 through-hole package simplifies manual repair and legacy board compatibility while maintaining AEC-Q101 qualification.
Availability
P4KE43A-E3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and 24 V DC power input stages requiring stable component supply across multi-year production programs.
Supply support for P4KE43A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The P4KE43A-E3/54 belongs to Vishay's TransZORB® TVS family, engineered specifically for robust transient suppression in harsh environments-including under-hood automotive, factory automation, and outdoor telecom infrastructure.
FAQ
What is the breakdown voltage tolerance for P4KE43A-E3/54?
The P4KE43A-E3/54 has a specified breakdown voltage range of 40.9 V to 45.2 V at 1 mA test current, representing a ±5 % tolerance around the nominal 43 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports reliable system-level surge margin calculations without overspecifying downstream protection.
Is P4KE43A-E3/54 suitable for bidirectional transient protection?
No, P4KE43A-E3/54 is a unidirectional TVS diode-its cathode band indicates polarity, and it only conducts avalanche current when the cathode is positive relative to the anode. For bidirectional protection, Vishay offers the P4KE43CA variant; using P4KE43A-E3/54 in AC or floating applications risks reverse conduction failure and permanent damage.
Does P4KE43A-E3/54 meet automotive reliability standards?
Yes, the "E3" suffix denotes RoHS-compliant commercial grade with JESD 201 Class 1A whisker resistance, while the "HE3" variant is explicitly AEC-Q101 qualified. Though P4KE43A-E3/54 itself is not AEC-Q101 certified, its construction and test data align with that standard-many automotive Tier 1s qualify it internally for non-safety-critical body electronics when paired with appropriate layout and derating.
What is the maximum allowable lead temperature during soldering for P4KE43A-E3/54?
The P4KE43A-E3/54 supports solder dip at up to 275 °C for 10 seconds per JESD 22-B106, and its matte tin-plated leads comply with J-STD-002 for wetting and JESD 22-B102 for intermetallic growth. Reflow profiles must limit peak temperature to ≤260 °C for ≤10 s to preserve glass passivation integrity and avoid VBR drift.
How does the clamping voltage VC of P4KE43A-E3/54 compare to its breakdown voltage VBR?
At its rated 6.7 A peak pulse current (10/1000 μs), the P4KE43A-E3/54 clamps to ≤59.3 V, yielding a clamping ratio (VC/VBR) of approximately 1.32-calculated using the midpoint VBR of 43.05 V. This low ratio confirms effective energy diversion and makes the P4KE43A-E3/54 suitable for protecting 36 V-rated components with margin.
P4KE43A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- 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)
P4KE43A-E3/54 FAQ
1.How can I place an order for P4KE43A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE43A-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 P4KE43A-E3/54 reliable?
The price and inventory of P4KE43A-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 P4KE43A-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE43A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE43A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE43A-E3/54?
P4KE43A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE43A-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 P4KE43A-E3/54?
For technical support, including P4KE43A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE43A-E3/54 requirements.
6.How does Aetrix verify that P4KE43A-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE43A-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 P4KE43A-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE43A-E3/54?
All P4KE43A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE43A-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 P4KE43A-E3/54 part is unused and in its original packaging.
Return procedure for P4KE43A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE43A-E3/54 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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 …
