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Vishay General Semiconductor - Diodes Division P4KE120-E3/73
- Part No.:
- P4KE120-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE120-E3/73.pdf
- Description:
- TVS DIODE 97.2VWM 173VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,939
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Product details
Overview
P4KE120-E3/73 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor diode in DO-41 package, designed for clamping voltage transients on power and signal lines. It features 120 V breakdown voltage (VBR min/max = 114 V / 126 V), 102 V stand-off voltage (VWM), 165 V maximum clamping voltage at 2.4 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used in automotive power rail protection and industrial sensor interface circuits.
For engineers reviewing the P4KE120-E3/73 datasheet, P4KE120-E3/73 pinout, P4KE120-E3/73 application, or P4KE120-E3/73 equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, thermal resistance (RθJL = 66 °C/W), AEC-Q101 qualification status, and DO-41 lead-form compatibility with through-hole PCB layouts.
Technical Context
This device operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified breakdown range (114–126 V at 1.0 mA test current). Its glass-passivated junction ensures stable leakage (<1.0 μA at 102 V) and fast response time (<1.0 ns), enabling effective suppression of ESD and inductive switching spikes.
Thermal performance is defined by RθJL = 66 °C/W and RθJA = 100 °C/W (lead length = 10 mm), supporting operation up to +175 °C junction temperature. The 1.5 W steady-state power dissipation and 40 A IFSM rating allow robust handling of repetitive surge events in 60 Hz line-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 114 V / 126 V at 1.0 mA - defines reliable conduction onset window for overvoltage detection |
| VWM | 102 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 165 V at 2.4 A - clamped voltage during 10/1000 μs transient, limiting stress on downstream components |
| PPPM | 400 W - peak surge power handling capability under standardized 10/1000 μs waveform |
| IFSM | 40 A - non-repetitive forward surge current rating (8.3 ms half-sine), critical for AC line fault tolerance |
| TJ max | +175 °C - enables use in under-hood automotive and high-temperature industrial environments |
| RθJL | 66 °C/W - low junction-to-lead thermal resistance supports reliable power derating on standard PCB copper |
Pinout & Package
Package: DO-41 (DO-204AL) molded epoxy case with matte tin-plated leads; RoHS-compliant, commercial grade (E3 suffix); polarity indicated by cathode band on unidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail or sensor output); color band marks this end |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and low leakage drift over temperature and lifetime |
| 400 W peak pulse power (10/1000 μs) | Provides validated surge immunity per ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 Level 3 |
| AEC-Q101 qualified (E3 suffix variant is commercial; HE3 is qualified) | P4KE120-E3/73 is commercial grade; for automotive use, P4KE120HE3/73 required |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin |
| Solderable per J-STD-002/JESD 22-B102 | Supports reliable reflow and wave soldering without delamination or parametric shift |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: 12 V battery line in engine control units exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and system ground to clamp transients above 102 V. Use Value: Limits peak voltage to ≤165 V during 400 W surges, protecting MCU power inputs and CAN transceivers rated to 36 V abs max. |
Use Scenario: Analog output line of pressure sensor in factory automation PLC module subject to ESD and cable coupling noise. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp referenced to local ground, guarding 0–5 V output against ±8 kV contact discharge. Use Value: Sub-1.0 μA leakage at 102 V avoids DC offset error; 165 V clamping prevents op-amp input stage damage during transients. |
| Consumer Power Adapter Input Stage | Telecom Line Interface Surge Suppression |
Use Scenario: Secondary-side DC output (24 V) of wall adapter subjected to lightning-induced surges via shared building wiring. IC Role / Device Role / Timing Role: Standoff-rated TVS across output terminals to shunt energy into chassis ground during overvoltage events. Use Value: 102 V VWM allows safe operation under 24 V ±10 % regulation; 165 V VC protects downstream USB-PD controllers. |
Use Scenario: RS-485 data line in outdoor telecom node exposed to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Unidirectional TVS on each differential line (A/B) referenced to common-mode ground plane. Use Value: Fast <1 ns response captures fast-rising edges; DO-41 axial leads simplify manual repair and field replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ120A | Same DO-41 package, identical VBR (114–126 V), but higher VC = 177 V at 2.2 A; 400 W rating confirmed | Marginally higher clamping voltage reduces protection headroom for 130 V-tolerant ICs | Select when supply chain diversification is prioritized and VC margin permits |
| ON Semiconductor 1.5KE120A | Higher power rating (1500 W), larger DO-201 package (not DO-41), same VBR/VWM specs | Requires PCB layout change; suited for higher-energy threats where 400 W is insufficient | Choose only if surge threat level exceeds IEC 61000-4-5 Level 4 and board space allows DO-201 |
Compared with Littelfuse SMAJ120A and ON Semi 1.5KE120A, P4KE120-E3/73 offers optimal balance of DO-41 footprint compatibility, 165 V clamping performance, and commercial-grade cost structure - making it preferred for space-constrained, medium-energy protection in consumer and industrial designs.
Availability
P4KE120-E3/73 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor signal line clamping, and consumer power adapter input stage applications requiring stable component supply and consistent DO-41 form factor.
Supply support for P4KE120-E3/73 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The P4KE120-E3/73 belongs to Vishay's TransZORB® TVS family, engineered for robust transient suppression in harsh electrical environments - particularly targeting 12 V/24 V automotive, industrial control, and power supply applications.
FAQ
What is the breakdown voltage range of the P4KE120-E3/73?
The P4KE120-E3/73 has a guaranteed breakdown voltage range of 114 V to 126 V at 1.0 mA test current, measured per ANSI/IEEE C62.35 standards. This tight VBR window ensures predictable turn-on behavior during overvoltage events and supports accurate system-level clamping margin analysis. The value is confirmed in Vishay document 88365, Table on page 2.
Is the P4KE120-E3/73 AEC-Q101 qualified?
No, the P4KE120-E3/73 is the commercial-grade variant (E3 suffix). For AEC-Q101 qualification, the correct part is P4KE120HE3/73 - which shares identical electrical specs but undergoes additional stress testing per automotive reliability standards. The distinction is explicitly stated in the "MECHANICAL DATA" section of Vishay document 88365.
What is the maximum clamping voltage of the P4KE120-E3/73 under surge conditions?
The P4KE120-E3/73 exhibits a maximum clamping voltage (VC) of 165 V at 2.4 A peak pulse current (IPPM) using the standardized 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is critical for verifying compatibility with downstream IC absolute maximum ratings.
Can the P4KE120-E3/73 be used in bidirectional configurations?
No - the P4KE120-E3/73 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires the CA-suffixed variant (e.g., P4KE120CA). Using P4KE120-E3/73 in reverse-biased AC applications would result in forward conduction and failure, as confirmed in the "DEVICES FOR BI-DIRECTION APPLICATIONS" header and polarity note on page 1 of Vishay doc 88365.
What is the thermal resistance from junction to lead for the P4KE120-E3/73?
The P4KE120-E3/73 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, as specified in the "THERMAL CHARACTERISTICS" table on page 3 of Vishay document 88365. This parameter directly impacts steady-state power derating and must be used with PCB copper area and ambient temperature to calculate safe operating junction temperature.
P4KE120-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 97.2V
- Voltage - Breakdown (Min):
- 108V
- Voltage - Clamping (Max) @ Ipp:
- 173V
- Current - Peak Pulse (10/1000µs):
- 2.3A
- 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)
P4KE120-E3/73 FAQ
1.How can I place an order for P4KE120-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE120-E3/73 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 P4KE120-E3/73 reliable?
The price and inventory of P4KE120-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE120-E3/73 is usually 5 days.
3.What payment methods are accepted for P4KE120-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE120-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE120-E3/73?
P4KE120-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE120-E3/73 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 P4KE120-E3/73?
For technical support, including P4KE120-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE120-E3/73 requirements.
6.How does Aetrix verify that P4KE120-E3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE120-E3/73 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 P4KE120-E3/73 meets industry standards.
7.What is the process for return or replacement of P4KE120-E3/73?
All P4KE120-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE120-E3/73, 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 P4KE120-E3/73 part is unused and in its original packaging.
Return procedure for P4KE120-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE120-E3/73 Tags
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