My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4KA16AHE3/73
- Part No.:
- P4KA16AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA16AHE3/73.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,721
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4KA16AHE3/73 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), 15.2–16.8 V breakdown voltage (VBR), and 17.8 A peak pulse current (IPPM). It protects MOSFETs and sensor signal lines in automotive powertrain control modules against inductive switching transients.
For engineers reviewing the P4KA16AHE3/73 datasheet, P4KA16AHE3/73 pinout, P4KA16AHE3/73 application, or P4KA16AHE3/73 equivalent, this page delivers verified electrical specs, AEC Q101 qualification status, clamping behavior at 17.8 A, thermal derating above 25 °C, and RoHS-compliant HE3 packaging with JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode uses patented PAR® construction to achieve low incremental surge resistance and sub-nanosecond response time under transient stress. Its unidirectional polarity and 13.6 V stand-off voltage (VWM) enable reliable reverse-biased clamping in DC power rails without leakage-induced bias drift.
Designed for high-reliability automotive environments, it operates across –65 °C to +185 °C junction temperature and maintains stable VBR temperature coefficient (0.086 %/°C) over full range - critical for engine bay electronics exposed to thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 400 W - sustains single high-energy transients from load dump or relay bounce without failure |
| Breakdown Voltage VBR | 15.2–16.8 V at 1 mA - defines precise clamping initiation threshold for 12 V system protection |
| Clamping Voltage VC at IPPM | 22.5 V at 17.8 A - limits downstream voltage stress below IC absolute maximum ratings |
| Stand-off Voltage VWM | 13.6 V - ensures no conduction during normal 12 V rail operation, minimizing standby leakage |
| Maximum Junction Temperature | +185 °C - supports placement near hot components (e.g., power MOSFET heatsinks) in engine control units |
| AEC Q101 Qualified | Yes - validated for automotive use per stress test requirements including temperature cycling and HTRB |
| RoHS & Whisker Compliance | HE3 suffix: RoHS 2002/95/EC compliant, JESD201 Class 2 tin whisker resistant plating |
Pinout & Package
DO-204AL (DO-41) molded epoxy package with axial leads; cathode denoted by color band. Matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 mechanical robustness standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected circuit ground or low-side return path; enables unidirectional clamping to ground |
| Cathode | Current exit point during reverse clamping | Connected to protected line (e.g., sensor supply); conducts surge current to ground when VIN exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Reduces incremental surge resistance for tighter VC–IPPM correlation and lower let-through energy |
| 400 W peak pulse rating (10/1000 µs) | Handles automotive ISO 7637-2 Pulse 1/2a/5a transient waveforms without degradation |
| Low 1.0 µA max reverse leakage at VWM | Prevents false triggering or power loss in always-on vehicle subsystems (e.g., CAN wake-up circuits) |
| 185 °C max junction temperature | Enables direct mounting on PCBs adjacent to high-power drivers in transmission control modules |
| Solder dip 260 °C, 40 s | Withstands standard lead-free reflow profiles without delamination or parameter shift |
Applications
| Engine Control Unit (ECU) Power Input Protection | Automotive Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protects 12 V supply rail of gasoline/diesel ECU against load dump transients up to 35 V and 100 ms duration. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery feed and input filter capacitor to clamp surges before LDO regulators. Use Value: Limits voltage to ≤22.5 V at 17.8 A, preventing damage to MCU power management ICs rated for 28 V absolute max. |
Use Scenario: Shields analog output of crankshaft position sensor from inductive kickback during ignition coil switching. IC Role / Device Role / Timing Role: Clamps reverse transients on 5 V sensor supply line while maintaining <1.0 µA leakage at nominal bias. Use Value: Ensures signal integrity remains intact during cold-cranking (–40 °C) and hot idle (+150 °C ambient) due to stable VBR tempco (0.086 %/°C). |
| Transmission Control Module (TCM) Solenoid Drive Protection | Body Control Module (BCM) LIN Bus Line Clamp |
Use Scenario: Suppresses flyback voltage spikes generated by 12 V solenoid valves in automatic transmission hydraulic control units. IC Role / Device Role / Timing Role: Mounted directly across solenoid coil terminals to absorb stored inductive energy within 1 ns response window. Use Value: Achieves 22.5 V clamping at 17.8 A, keeping driver FET drain-source voltage below 30 V rating and avoiding avalanche stress. |
Use Scenario: Guards LIN physical layer transceiver (e.g., TJA1020) against ESD and cable discharge events in door module wiring harnesses. IC Role / Device Role / Timing Role: Placed on LIN bus line between connector and transceiver input, operating at 12 V system ground reference. Use Value: Delivers 400 W pulse handling with <1.0 µA leakage at 13.6 V, eliminating false wake-ups while passing ISO 10605 ±25 kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/5AT | Same VBR range (15.2–16.8 V), but 400 W rating uses 8.3 ms waveform; lower IPPM (17.5 A) and higher VC (25.5 V) | Less effective clamping margin for fast 10/1000 µs transients common in powertrain systems | Select P4KA16AHE3/73 where tighter clamping (22.5 V vs. 25.5 V) and AEC Q101 validation are required |
| 1.5KE16CA | Higher power (1500 W), bidirectional, DO-201 package; VBR 15.2–16.8 V, VC = 24.4 V at 53.3 A | Over-specified for low-energy sensor lines; larger footprint and bidirectional leakage unsuitable for DC-coupled rails | Choose P4KA16AHE3/73 for space-constrained, unidirectional 12 V rail protection with automotive qualification |
Compared with SMAJ16A-E3/5AT and 1.5KE16CA, P4KA16AHE3/73 provides superior clamping precision (22.5 V), AEC Q101 compliance for automotive deployment, and optimized DO-41 footprint for high-density ECU layouts - making it the preferred choice for cost-sensitive, thermally demanding engine control applications.
Availability
P4KA16AHE3/73 is available at Aetrix Electronics and suitable for automotive engine control units, transmission control modules, and body control modules requiring stable component supply with traceable lot history and long-term lifecycle support.
Supply support for P4KA16AHE3/73 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, thermal performance, and automotive qualification.
The P4KA16AHE3/73 belongs to Vishay's automotive TVS family engineered specifically for AEC Q101-compliant transient suppression in harsh-environment powertrain and chassis electronics.
FAQ
What is the exact breakdown voltage range for P4KA16AHE3/73?
The P4KA16AHE3/73 has a guaranteed breakdown voltage (VBR) range of 15.2 V to 16.8 V at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This tight tolerance ensures consistent clamping initiation across production lots and supports robust design margins for 12 V automotive systems.
Is P4KA16AHE3/73 qualified for automotive use?
Yes, P4KA16AHE3/73 is AEC Q101 qualified and designated as high-reliability/automotive grade (base P/NHE3). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and humidity testing to meet automotive electronic component requirements.
What does the HE3 suffix indicate on P4KA16AHE3/73?
The HE3 suffix on P4KA16AHE3/73 denotes RoHS compliance, high-reliability construction, and JESD201 Class 2 whisker resistance. It confirms matte tin-plated leads that pass solderability testing per J-STD-002 and mechanical robustness per JESD22-B102.
What is the clamping voltage of P4KA16AHE3/73 at its rated peak pulse current?
At its rated peak pulse current of 17.8 A (10/1000 µs waveform), the P4KA16AHE3/73 clamps to a maximum of 22.5 V. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events.
Can P4KA16AHE3/73 be used in bidirectional configurations?
No, P4KA16AHE3/73 is unidirectional only, as confirmed in the Vishay datasheet. It features a cathode band marking and is designed for clamping transients referenced to ground on positive supply lines - bidirectional protection requires a different device such as P4SMA16CA or similar.
P4KA16AHE3/73 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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 17.8A
- 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)
P4KA16AHE3/73 FAQ
1.How can I place an order for P4KA16AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA16AHE3/73 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 P4KA16AHE3/73 reliable?
The price and inventory of P4KA16AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA16AHE3/73 is usually 5 days.
3.What payment methods are accepted for P4KA16AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA16AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA16AHE3/73?
P4KA16AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA16AHE3/73 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 P4KA16AHE3/73?
For technical support, including P4KA16AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA16AHE3/73 requirements.
6.How does Aetrix verify that P4KA16AHE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KA16AHE3/73 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 P4KA16AHE3/73 meets industry standards.
7.What is the process for return or replacement of P4KA16AHE3/73?
All P4KA16AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA16AHE3/73, 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 P4KA16AHE3/73 part is unused and in its original packaging.
Return procedure for P4KA16AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KA16AHE3/73 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 …
