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Vishay General Semiconductor - Diodes Division P4KA36HE3/73
- Part No.:
- P4KA36HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA36HE3/73.pdf
- Description:
- TVS DIODE 29.1VWM 52VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,833
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Product details
Overview
P4KA36HE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, rated for 400 W peak pulse power (10/1000 µs), 32.4–39.6 V breakdown voltage (VBR), and 185 °C maximum junction temperature. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive powertrain and body electronics.
For engineers reviewing the P4KA36HE3/73 datasheet, P4KA36HE3/73 pinout, P4KA36HE3/73 application, or P4KA36HE3/73 equivalent, key selection criteria include clamping voltage (52.0 V at 7.7 A), AEC-Q101 qualification, RoHS-compliant HE3 suffix with JESD201 Class 2 whisker resistance, and 1.5 W steady-state power dissipation.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under high-temperature operation (TJ up to 185 °C) and repetitive surge stress. Its unidirectional polarity and low incremental surge resistance enable fast response (<1 ns) and precise overvoltage protection in 12 V and 24 V automotive systems.
The device complies with ANSI/IEEE C62.35 standards for transient suppression and is characterized using 10/1000 µs waveform testing. Its 0.099 %/°C VBR temperature coefficient ensures predictable voltage threshold drift across automotive ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 400 W - sustains single high-energy transients without failure in automotive load-dump or inductive kick scenarios |
| Breakdown Voltage VBR | 32.4–39.6 V at 1 mA - defines reliable conduction onset above normal system operating voltage |
| Clamping Voltage VC | 52.0 V at 7.7 A IPPM - limits downstream component stress during worst-case surge events |
| Stand-off Voltage VWM | 29.1 V - maximum continuous reverse voltage before leakage exceeds 1 µA, compatible with 24 V nominal systems |
| Operating Temperature Range | −65 °C to +185 °C - supports under-hood placement and AEC-Q101 automotive qualification |
| Surge Current IPPM | 7.7 A (10/1000 µs) - quantifies maximum transient current the device can shunt while maintaining clamping integrity |
| Power Dissipation PD | 1.5 W on infinite heatsink at TL = 75 °C - sets thermal design boundary for PCB trace width and copper area |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, molded epoxy case with UL 94 V-0 rating. Cathode indicated by color band. Matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance reference in unidirectional TVS configuration |
| Cathode | Protected line connection / Clamping node | Connected to the line being protected (e.g., CAN_H, LIN, sensor supply); color-banded end |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low dynamic impedance across temperature and lifetime, critical for AEC-Q101 reliability |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per JESD22 standards |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under high-temperature/humidity stress, eliminating latent short-circuit risk in sealed modules |
| Low clamping ratio (VC/VBR ≈ 1.6) | Minimizes overvoltage margin between trigger and clamp, improving protection headroom for 3.3 V/5 V logic interfaces |
| 400 W peak pulse rating (10/1000 µs) | Meets ISO 7637-2 Pulse 1, 2a, 3a/b and ISO 16750-2 load-dump requirements for 24 V commercial vehicle systems |
Applications
| Automotive Body Control Module (BCM) | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Protects microcontroller I/O and LIN bus transceivers from battery reverse-connection spikes and relay coil flyback in door module PCBs. IC Role / Device Role: Unidirectional TVS placed between LIN line and ground, triggered only during positive transients. Use Value: Clamps 52.0 V surges below MCU absolute maximum ratings (typically 40 V), preventing latch-up or gate oxide damage in P4KA36HE3/73-equipped designs. |
Use Scenario: Shields 5 V/3.3 V regulator inputs from alternator load-dump transients (up to 60 V, 400 ms) in diesel ECU power supplies. IC Role / Device Role: Primary front-end transient suppressor on 24 V input rail, upstream of DC-DC converter. Use Value: Withstands 400 W pulses without degradation, enabling compliance with ISO 16750-2 Test 4a while maintaining 29.1 V stand-off for normal operation. |
| ADAS Camera Power Line Protection | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Guards image sensor supply and MIPI CSI-2 data lines against ESD and cable discharge events in rear-view camera modules. IC Role / Device Role: Secondary protection stage after common-mode choke, placed on 12 V bias rail feeding image sensor. Use Value: 185 °C max junction temperature allows mounting near heat-generating image processors without derating loss, supported by DO-41 thermal mass. |
Use Scenario: Safeguards Hall-effect position sensor outputs from inductive kickback generated by EPS motor commutation. IC Role / Device Role: Unidirectional TVS on analog output line (0–5 V ratiometric), referenced to sensor ground. Use Value: 0.099 %/°C VBR coefficient ensures consistent clamping threshold across −40 °C to +150 °C sensor operating range, avoiding false triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5AT | Same VBR range (32.4–39.6 V), but lower PPPM (400 W vs. SMAJ series' 400 W), SMC package (DO-214AB), higher VC (58.1 V) | Surface-mount only; requires reflow-compatible layout; less suitable for through-hole legacy automotive harness interfaces | Select when board space is constrained and automated assembly is required; verify thermal pad design for 1.5 W dissipation. |
| 1.5KE36A | Higher VC (58.1 V), same DO-204AL package, but non-automotive grade (no AEC-Q101), no HE3 whisker qualification | Not qualified for automotive under-hood use; limited to industrial/commercial environments with <125 °C ambient | Acceptable for cost-sensitive non-automotive applications where AEC-Q101 and JESD201 Class 2 are not mandated. |
Compared with SMAJ36A-E3/5AT and 1.5KE36A, the P4KA36HE3/73 uniquely combines AEC-Q101 qualification, JESD201 Class 2 whisker resistance, and DO-41 through-hole robustness-making it the only choice for high-reliability automotive harness-connected modules requiring manual repairability and long-term thermal stability.
Availability
P4KA36HE3/73 is available at Aetrix Electronics and suitable for automotive body electronics, engine control units, ADAS camera power rails, and electric power steering sensor interfaces requiring stable component supply across extended temperature and lifecycle demands.
Supply support for P4KA36HE3/73 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P4KA36HE3/73 belongs to Vishay's automotive TVS diode family engineered specifically for AEC-Q101 compliance and under-hood transient immunity-targeting 12 V/24 V vehicle subsystems where thermal resilience and long-term whisker-free reliability are mandatory.
FAQ
What is the clamping voltage of the P4KA36HE3/73 at its rated peak pulse current?
The P4KA36HE3/73 has a maximum clamping voltage (VC) of 52.0 V at 7.7 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The P4KA36HE3/73 maintains this clamping performance across its full operating temperature range, supporting robust protection in automotive environments.
Is the P4KA36HE3/73 qualified for automotive applications?
Yes, the P4KA36HE3/73 is AEC-Q101 qualified and designated as an automotive-grade part. Its HE3 suffix confirms compliance with JESD201 Class 2 whisker testing and RoHS Directive 2002/95/EC. The device is rated for operation from −65 °C to +185 °C junction temperature, making it suitable for under-hood and powertrain applications where thermal and mechanical reliability are critical. The P4KA36HE3/73 meets these requirements as verified in Vishay's qualification report for Document Number 88364.
What does the "HE3" suffix mean in P4KA36HE3/73?
The "HE3" suffix in P4KA36HE3/73 indicates a high-reliability, RoHS-compliant version with matte tin-plated leads qualified to JESD201 Class 2 for whisker resistance. It also signifies AEC-Q101 qualification and adherence to automotive-grade manufacturing controls. The "/73" denotes the specific packaging option: 73 = 2.5 kpcs per 7" tape-and-reel. This suffix distinguishes the P4KA36HE3/73 from commercial-grade variants like P4KA36A, which lack automotive qualification and whisker testing.
Can the P4KA36HE3/73 be used in bidirectional configurations?
No, the P4KA36HE3/73 is available in uni-directional polarity only, as explicitly stated in the Vishay datasheet. Its internal structure and electrical characteristics-including cathode band marking and forward voltage specification-are designed exclusively for unidirectional transient suppression. For bidirectional protection, engineers must select a dedicated bidirectional TVS such as the P4SMA36CA or SMBJ36CA; the P4KA36HE3/73 cannot be substituted without circuit redesign.
What is the maximum steady-state power dissipation for the P4KA36HE3/73?
The P4KA36HE3/73 has a maximum steady-state power dissipation (PD) of 1.5 W when mounted on an infinite heatsink at lead temperature (TL) = 75 °C. This rating is defined in Figure 5 of the datasheet and must be derated linearly above 75 °C. In typical PCB layouts without heatsinking, actual usable power is lower and depends on copper area, trace width, and ambient temperature-designers should consult the P4KA36HE3/73 thermal curves to ensure junction temperature remains ≤185 °C.
P4KA36HE3/73 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):
- 29.1V
- Voltage - Breakdown (Min):
- 32.4V
- Voltage - Clamping (Max) @ Ipp:
- 52V
- Current - Peak Pulse (10/1000µs):
- 7.7A
- 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)
P4KA36HE3/73 FAQ
1.How can I place an order for P4KA36HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA36HE3/73 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 P4KA36HE3/73 reliable?
The price and inventory of P4KA36HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA36HE3/73 is usually 5 days.
3.What payment methods are accepted for P4KA36HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA36HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA36HE3/73?
P4KA36HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA36HE3/73 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 P4KA36HE3/73?
For technical support, including P4KA36HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA36HE3/73 requirements.
6.How does Aetrix verify that P4KA36HE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KA36HE3/73 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 P4KA36HE3/73 meets industry standards.
7.What is the process for return or replacement of P4KA36HE3/73?
All P4KA36HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA36HE3/73, 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 P4KA36HE3/73 part is unused and in its original packaging.
Return procedure for P4KA36HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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