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Vishay General Semiconductor - Diodes Division P4KE180HE3/73
- Part No.:
- P4KE180HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE180HE3/73.pdf
- Description:
- TVS DIODE 146VWM 258VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,925
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Product details
Overview
P4KE180HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 154 V standoff voltage (VWM), 171–189 V breakdown range (VBR at 1 mA), 246 V maximum clamping voltage at 1.6 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the P4KE180HE3/73 datasheet, P4KE180HE3/73 pinout, P4KE180HE3/73 application, or P4KE180HE3/73 equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, AEC-Q101 qualification for automotive use, DO-41 lead-form compatibility with legacy PCB footprints, and thermal resistance (RθJL = 66 °C/W) for surge duty-cycle derating.
Technical Context
This device operates as a silicon avalanche diode, triggered when reverse voltage exceeds its specified breakdown threshold (VBR), diverting transient energy to ground while limiting voltage across the protected circuit. Its glass-passivated junction ensures stable leakage and long-term reliability under repetitive surge stress.
Designed for unidirectional operation, P4KE180HE3/73 exhibits low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD, inductive switching spikes, and lightning-induced surges on 12 V–24 V systems. It is rated for TJ = –55 °C to +175 °C and qualified to AEC-Q101.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 154 V - Maximum continuous DC or RMS operating voltage before conduction begins; sets upper limit for normal circuit operation. |
| VBR (Breakdown Voltage) | 171–189 V at 1 mA - Confirmed avalanche initiation range; defines minimum overvoltage level that triggers clamping action. |
| VC (Clamping Voltage) | 246 V at IPPM = 1.6 A - Peak voltage seen by protected circuit during 10/1000 μs transient; determines margin vs. downstream IC absolute max rating. |
| PPPM (Peak Pulse Power) | 400 W - Sustained surge energy handling per single 10/1000 μs event; enables protection against ISO 7637-2 Pulse 1/2a/5a transients. |
| ID (Reverse Leakage) | 1.0 μA at VWM - Negligible standby current; avoids loading sensitive reference or bias networks in always-on circuits. |
| TJ max | +175 °C - Enables placement near hot components (e.g., power MOSFETs, inductors) without thermal derating penalties. |
| RθJL | 66 °C/W - Junction-to-lead thermal resistance; supports >1.5 W steady-state dissipation with proper lead heatsinking. |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy body with matte tin-plated leads. Compliant with UL 94 V-0; RoHS-compliant and AEC-Q101 qualified (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal in forward bias; tied to lower-potential side of protected line | Connected to GND or return path in unidirectional configuration; must be routed with low-inductance path for effective clamping. |
| Cathode (banded end) | Current exit terminal in forward bias; connected to protected line | Color band denotes polarity; cathode connects to the line being protected (e.g., 24 V rail), anode to ground - reversal disables protection. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR and low leakage over temperature and lifetime; eliminates passivation-related drift in automotive under-hood environments. |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors - meets stress test requirements for temperature cycling, HTRB, and ESD. |
| 400 W 10/1000 μs pulse rating | Handles high-energy transients such as load dump (ISO 7637-2 Pulse 5a) without degradation; supports ≥1000 pulses at 0.01% duty cycle. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage overshoot during clamping - critical for protecting 175 V-rated MOSFETs or 200 V capacitors in 24 V systems. |
| DO-41 mechanical compatibility | Direct replacement for legacy P4KE series; fits standard 0.375" (9.5 mm) lead spacing footprints and supports wave/solder dip (275 °C, 10 s). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs of engine control units (ECUs) against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V rail and chassis ground to clamp surges above 154 V. Use Value: Limits peak voltage to 246 V, preserving integrity of 36 V-input PMICs and 40 V-rated gate drivers without derating. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature transmitters in factory automation. IC Role / Device Role / Timing Role: TVS mounted at connector interface to shunt induced surges from nearby motor drives or relay coils. Use Value: Sub-1 ns response prevents latch-up in precision op-amps and ADC front-ends; 1.0 μA leakage avoids loop current error. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Driver Protection |
Use Scenario: Securing 48 V DC input of PoE-powered network switches and base station radios exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk DC input stage, upstream of DC/DC converters. Use Value: 400 W rating absorbs multi-kV transients; DO-41 package allows manual rework and field replacement in telecom infrastructure. |
Use Scenario: Shielding microcontroller I/O and gate driver inputs in washing machine motor control boards from brush-commutator noise. IC Role / Device Role / Timing Role: Localized TVS on H-bridge enable lines and current-sense amplifier inputs. Use Value: 175 °C max junction temperature accommodates sealed enclosure thermal buildup; AEC-Q101 grade assures reliability in white goods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A | DO-214AA (SMB) package; same VWM (154 V), slightly higher VC (252 V at 1.6 A); 600 W PPPM rating. | Surface-mount footprint; better suited for automated assembly and higher-density layouts. | Select SMBJ180A when board space is constrained and reflow soldering is used; verify pad thermal relief for 1.5 W steady-state dissipation. |
| 1.5KE180A | Higher PPPM (1500 W), same DO-41 package; VWM = 154 V, VC = 253 V at 5.4 A; larger die size increases capacitance (~100 pF vs. ~40 pF). | Capable of absorbing larger single-event surges but introduces higher junction capacitance - unsuitable for high-speed data lines. | Choose 1.5KE180A only for high-energy, low-frequency transients (e.g., AC mains coupling); avoid in signal-line or RF-adjacent locations. |
Compared with SMBJ180A and 1.5KE180A, P4KE180HE3/73 offers optimal balance of AEC-Q101 compliance, low clamping voltage, minimal capacitance, and through-hole serviceability - making it preferred for automotive and industrial repairable assemblies where DO-41 is standardized.
Availability
P4KE180HE3/73 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4KE180HE3/73 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 passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P4KE series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where surge immunity and long-term stability are critical.
FAQ
What is the clamping voltage of P4KE180HE3/73 and how does it protect downstream components?
The P4KE180HE3/73 has a maximum clamping voltage (VC) of 246 V at 1.6 A peak pulse current (10/1000 μs waveform). This means that when a transient exceeds its breakdown voltage, the device limits the voltage seen by protected circuitry to ≤246 V - well below typical 300 V+ breakdown thresholds of 24 V system MOSFETs and capacitors. This margin prevents overstress and ensures functional safety during ISO 7637-2 Pulse 1/5a events. The P4KE180HE3/73 achieves this via controlled avalanche conduction with low dynamic impedance.
Is P4KE180HE3/73 suitable for automotive applications?
Yes, P4KE180HE3/73 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junction, matte tin-plated leads compliant with J-STD-002, and operating temperature range of –55 °C to +175 °C - meeting under-hood thermal and reliability requirements. The HE3 suffix confirms AEC-Q101 qualification per Vishay documentation (Doc. #88365, Rev. 16-Sep-2021). Engineers deploying P4KE180HE3/73 in ECUs or ADAS modules can rely on its validated performance across temperature cycling, HTRB, and surge stress tests.
How does the DO-41 package of P4KE180HE3/73 affect thermal performance?
The DO-41 package of P4KE180HE3/73 provides a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, enabling effective heat transfer to PCB copper or chassis when leads are properly soldered and thermally relieved. With a 1.5 W steady-state power dissipation rating at TL = 75 °C, the package supports reliable operation in ambient temperatures up to +125 °C when mounted with ≥10 mm lead length and adequate copper pour. This makes P4KE180HE3/73 suitable for thermally demanding placements near power stages - unlike smaller SMD packages with higher RθJA.
What is the difference between P4KE180HE3/73 and P4KE180A-E3/73?
P4KE180HE3/73 is AEC-Q101 qualified (HE3 suffix), whereas P4KE180A-E3/73 is commercial-grade (E3 suffix) and not automotive-qualified. Both share identical electrical specs (VWM = 154 V, VBR = 171–189 V, VC = 246 V), DO-41 package, and RoHS compliance. However, P4KE180HE3/73 undergoes additional stress testing per AEC-Q101 - including temperature cycling, high-temperature reverse bias, and ESD - ensuring reliability in automotive applications. For non-automotive industrial use, P4KE180A-E3/73 remains a cost-effective alternative, but P4KE180HE3/73 is mandatory where AEC-Q101 compliance is required.
Can P4KE180HE3/73 be used in bidirectional configurations?
No, P4KE180HE3/73 is a unidirectional TVS diode and cannot be used for bidirectional protection. Its cathode band indicates polarity, and it conducts only in reverse breakdown - forward conduction occurs at ~1.2 V, offering no clamping in positive transients. For bidirectional protection, Vishay specifies CA-suffix parts (e.g., P4KE180CA), which contain back-to-back diodes in one package. Using P4KE180HE3/73 in a bidirectional scenario would leave the circuit unprotected against positive-going transients exceeding the forward voltage drop.
P4KE180HE3/73 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):
- 146V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 258V
- Current - Peak Pulse (10/1000µs):
- 1.6A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE180HE3/73 FAQ
1.How can I place an order for P4KE180HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE180HE3/73 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 P4KE180HE3/73 reliable?
The price and inventory of P4KE180HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE180HE3/73 is usually 5 days.
3.What payment methods are accepted for P4KE180HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE180HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE180HE3/73?
P4KE180HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE180HE3/73 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 P4KE180HE3/73?
For technical support, including P4KE180HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE180HE3/73 requirements.
6.How does Aetrix verify that P4KE180HE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE180HE3/73 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 P4KE180HE3/73 meets industry standards.
7.What is the process for return or replacement of P4KE180HE3/73?
All P4KE180HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE180HE3/73, 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 P4KE180HE3/73 part is unused and in its original packaging.
Return procedure for P4KE180HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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