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Vishay General Semiconductor - Diodes Division P4KA24AHE3/73
- Part No.:
- P4KA24AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA24AHE3/73.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,057
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Product details
Overview
P4KA24AHE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, with 22.8 V to 25.2 V breakdown voltage (VBR), 33.2 V clamping voltage (VC) at 12.0 A peak pulse current, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for under-hood electronics protection.
For engineers reviewing the P4KA24AHE3/73 datasheet, P4KA24AHE3/73 pinout, P4KA24AHE3/73 application, or P4KA24AHE3/73 equivalent, this page delivers verified electrical specs, automotive reliability data, thermal derating curves, JEDEC-compliant soldering parameters, and direct alternatives for ESD/surge protection in sensor signal lines, MOSFET gate drivers, and automotive control modules.
Technical Context
The P4KA24AHE3/73 employs Vishay's patented PAR® construction for stable clamping under high-temperature transients (TJ up to +185 °C), delivering low incremental surge resistance and fast response time (<1 ns) to suppress inductive switching spikes. Its unidirectional polarity and 1.0 V stand-off voltage margin ensure compatibility with 24 V automotive supply rails.
Designed per ANSI/IEEE C62.35, it supports repetitive 0.01% duty cycle surges and meets JESD201 Class 2 whisker resistance. The device operates across –65 °C to +185 °C junction temperature range and withstands 40 A non-repetitive forward surge (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V - Ensures reliable triggering above nominal 24 V system voltage while avoiding false clamping during load dump transients. |
| VC @ IPPM | 33.2 V - Clamps 12.0 A surge (10/1000 µs) to safe levels for downstream 36 V-rated ICs and MOSFETs. |
| PPPM | 400 W - Sustains high-energy transients from relay coil de-energization or alternator load dump without degradation. |
| IFSM | 40 A - Withstands 8.3 ms half-sine surge events common in automotive power distribution networks. |
| TJ max. | +185 °C - Enables placement near heat sources (e.g., engine control units) without thermal derating loss. |
| VWM | 20.5 V - Provides 15% margin above 24 V nominal rail, preventing leakage-induced power loss during normal operation. |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, molded epoxy case meeting UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD22-B102; cathode denoted by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side reference | Enables unidirectional clamping from cathode to anode-must be tied to system ground for proper transient shunting. |
| Cathode | Protected line connection; clamping node for positive transients | Connected to 24 V rail or signal line; absorbs surge energy into ground when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Ensures consistent VBR stability over 1000+ surge cycles and lifetime thermal cycling (–65 °C to +185 °C). |
| AEC-Q101 qualification | Validated for automotive under-hood use including humidity, vibration, and temperature cycling per stress test requirements. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving protection margin. |
| Solder dip 260 °C / 40 s | Supports standard leaded PCB assembly without delamination or parameter shift-critical for high-volume automotive manufacturing. |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under thermal/humidity stress, eliminating latent field failures in sealed connectors. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial 24 V PLC I/O Module |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver pins from load dump and inductive kickback in diesel engine ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V supply rail and ground, clamping transients before they reach LDO regulators and MCU power domains. Use Value: Maintains VC ≤ 33.2 V during 400 W surges, preserving 36 V-rated power management ICs and enabling compliance with ISO 16750-2 load dump test. | Use Scenario: Shields analog input channels of programmable logic controller modules from field-wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Front-end protection on 24 V sensor supply lines feeding 4–20 mA transmitters and RTD interfaces. Use Value: Withstands 12.0 A peak pulses while holding leakage <1 µA at 20.5 V, ensuring measurement accuracy and long-term calibration stability. |
| Automotive Body Control Module (BCM) | Commercial Vehicle Lighting Driver |
Use Scenario: Safeguards LIN bus transceivers and window motor driver ICs against battery reverse polarity and jump-start transients. IC Role / Device Role / Timing Role: Cathode tied to LIN bus line, anode grounded-suppresses negative-going spikes and positive clamps simultaneously via system grounding strategy. Use Value: Operates reliably at TJ = +185 °C, allowing placement adjacent to power FETs without thermal derating or external heatsinking. | Use Scenario: Protects LED driver MOSFET gates and current-sense amplifiers in 24 V truck headlight systems exposed to alternator ripple and load dump. IC Role / Device Role / Timing Role: Placed across gate-source terminals of high-side N-channel MOSFETs to clamp Miller-induced voltage spikes during PWM switching. Use Value: Fast response (<1 ns) and low VF (3.5 V @ 25 A) prevent gate oxide overstress and ensure robust turn-off during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/5AT | Same DO-214AC (SMA) package; lower PPPM (400 W same), but VC = 38.9 V @ 10.3 A; no AEC-Q101 qualification. | Not rated for under-hood automotive use; suitable for industrial/commercial 24 V systems with less stringent reliability requirements. | Select when board space allows SMA footprint and AEC-Q101 is not mandated. |
| 1.5KE27A | DO-201AD package; higher VBR (24.3–26.9 V); VC = 37.5 V @ 10.7 A; PPPM = 1500 W; no AEC-Q101 or JESD201 Class 2 rating. | Higher power handling but larger footprint; intended for non-automotive surge suppression where size and whisker resistance are secondary. | Choose for cost-sensitive, non-automotive designs requiring >400 W surge capacity and relaxed qualification scope. |
Compared with SMAJ24A-E3/5AT and 1.5KE27A, the P4KA24AHE3/73 uniquely combines AEC-Q101 qualification, DO-41 axial form factor, JESD201 Class 2 whisker resistance, and precise 22.8–25.2 V VBR targeting 24 V automotive systems-making it the only option qualified for safety-critical under-hood placement without layout or reliability compromise.
Availability
P4KA24AHE3/73 is available at Aetrix Electronics and suitable for automotive engine control units, industrial 24 V PLC I/O modules, and commercial vehicle lighting drivers requiring stable component supply, traceable sourcing, and long-lifecycle support.
Supply support for P4KA24AHE3/73 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, thermal performance, and automotive qualification.
The P4KA24AHE3/73 belongs to Vishay's automotive TVS diode family engineered specifically for AEC-Q101 compliance, high-temperature operation, and robust transient immunity in 12 V/24 V vehicle subsystems.
FAQ
What is the breakdown voltage range of the P4KA24AHE3/73?
The P4KA24AHE3/73 has a guaranteed breakdown voltage (VBR) range of 22.8 V to 25.2 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures predictable clamping onset in 24 V automotive systems and avoids nuisance triggering during normal operating voltage fluctuations.
Is the P4KA24AHE3/73 qualified for automotive under-hood applications?
Yes, the P4KA24AHE3/73 is AEC-Q101 qualified and rated for operation from –65 °C to +185 °C junction temperature. Its PAR® construction, JESD201 Class 2 whisker resistance, and 260 °C solder dip capability make it suitable for under-hood engine control units, body control modules, and lighting systems per ISO 16750-2 and ISO 7637-2 requirements.
What is the clamping voltage of the P4KA24AHE3/73 at maximum rated surge current?
The P4KA24AHE3/73 clamps to 33.2 V at its rated peak pulse current of 12.0 A (10/1000 µs waveform). This value is measured per Fig. 3 in Vishay document 88364 and ensures protected circuits remain below 36 V absolute maximum ratings during standardized surge events.
Does the P4KA24AHE3/73 have unidirectional or bidirectional polarity?
The P4KA24AHE3/73 is unidirectional only, with cathode indicated by a color band. It conducts in forward bias (anode-to-cathode) and clamps positive transients on the cathode side relative to anode (ground). Bidirectional variants are not offered in the P4KAxxA series.
What package type and lead finish does the P4KA24AHE3/73 use?
The P4KA24AHE3/73 uses the DO-204AL (DO-41) axial package with matte tin-plated leads. It complies with J-STD-002 and JESD22-B102 for solderability and passes JESD201 Class 2 whisker testing-ensuring reliability in high-humidity, high-temperature automotive environments.
P4KA24AHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- PAR®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 12A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KA24AHE3/73 FAQ
1.How can I place an order for P4KA24AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA24AHE3/73 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 P4KA24AHE3/73 reliable?
The price and inventory of P4KA24AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA24AHE3/73 is usually 5 days.
3.What payment methods are accepted for P4KA24AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA24AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA24AHE3/73?
P4KA24AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA24AHE3/73 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 P4KA24AHE3/73?
For technical support, including P4KA24AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA24AHE3/73 requirements.
6.How does Aetrix verify that P4KA24AHE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KA24AHE3/73 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 P4KA24AHE3/73 meets industry standards.
7.What is the process for return or replacement of P4KA24AHE3/73?
All P4KA24AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA24AHE3/73, 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 P4KA24AHE3/73 part is unused and in its original packaging.
Return procedure for P4KA24AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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