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Vishay General Semiconductor - Diodes Division P6KE440A-E3/73
- Part No.:
- P6KE440A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE440A-E3/73.pdf
- Description:
- TVS DIODE 376VWM 602VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,775
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Product details
Overview
P6KE440A-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 440 V breakdown voltage (VBR min/max = 418–462 V), 376 V standoff voltage (VWM), 602 V clamping voltage at 1.0 A peak pulse current, 600 W peak pulse power rating (10/1000 μs), and DO-15 package with matte tin-plated leads. It is used to protect MOSFETs, ICs, and sensor interfaces against inductive switching transients in industrial power supplies.
For engineers reviewing the P6KE440A-E3/73 datasheet, P6KE440A-E3/73 pinout, P6KE440A-E3/73 application, or P6KE440A-E3/73 equivalent, key selection criteria include clamping voltage margin relative to protected device's absolute maximum rating, thermal resistance (RθJL = 20 °C/W), surge current capability (IPPM = 1.0 A), and AEC-Q101 qualification status - though this variant is commercial grade (E3 suffix), not HE3.
Technical Context
The P6KE440A-E3/73 operates as a silicon avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) to transient overvoltages. Its unidirectional polarity uses a cathode band marking, and it conducts only during reverse overvoltage events while presenting low leakage (<1.0 μA at 376 V) under normal operation.
It delivers 600 W peak pulse power per 10/1000 μs waveform at TA = 25 °C, derating linearly above 25 °C with 0.5 %/°C slope per Fig. 2. Junction temperature range spans −55 °C to +175 °C, and its thermal resistance from junction to lead is 20 °C/W - critical for PCB trace thermal design in high-reliability power rail protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 376 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected circuit's nominal DC rail. |
| VBR (min/max) | 418 V / 462 V - Breakdown occurs within this range at 1.0 mA test current; defines threshold for clamping activation. |
| VC @ IPPM | 602 V - Clamped voltage at 1.0 A peak pulse current; determines worst-case overvoltage seen by downstream components. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; validates robustness against common lightning/inductive surge profiles. |
| IPPM | 1.0 A - Peak pulse current corresponding to VC = 602 V; used with VC to compute effective clamping impedance (~602 Ω). |
| TJ max | +175 °C - Maximum junction temperature; enables operation in high-ambient environments like motor drive enclosures or power converters. |
| RθJL | 20 °C/W - Thermal resistance junction-to-lead; informs minimum copper area required on cathode/anode pads for sustained surge duty. |
Pinout & Package
Package: DO-15 (DO-204AC), axial-leaded, molded epoxy case meeting UL 94 V-0. Cathode identified by color band; anode is unmarked end. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, rated for 275 °C dip soldering (10 s max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward conduction terminal | Connected to lower-potential side of protected line (e.g., GND or return path); carries surge current during clamping. |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to higher-potential side (e.g., +380 V DC rail); avalanche breakdown initiates here during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling; eliminates risk of junction corrosion in humid environments. |
| 600 W peak pulse power (10/1000 μs) | Validates suitability for IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity testing in industrial equipment power inputs. |
| Low incremental surge resistance | Enables tight clamping (VC/IPPM ≈ 602 Ω) without excessive voltage overshoot during fast-rising transients (<1 ns response). |
| AEC-Q101 qualified variants available (HE3 suffix) | Confirms process control and stress-test compliance for automotive under-hood applications - though P6KE440A-E3/73 is commercial grade. |
| RoHS-compliant, JESD 201 Class 1A whisker tested | Guarantees lead finish stability during reflow and long-term storage; eliminates tin whisker risk in high-reliability PCB assemblies. |
Applications
| Industrial Power Supply Input Protection | Motor Drive DC Bus Clamp |
|---|---|
|
Use Scenario: Installed across bulk capacitor on 400 V DC input stage of variable frequency drives to suppress switching transients from IGBT commutation. IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse overvoltage spikes exceeding 376 V, diverting surge current away from rectifier bridge and bus capacitor. Use Value: Limits transient voltage to ≤602 V, preventing dielectric breakdown in 450 V-rated electrolytic capacitors and avoiding rectifier avalanche failure. |
Use Scenario: Placed between DC+ and DC− rails in servo amplifier power stage to absorb regenerative energy surges during rapid deceleration. IC Role / Device Role / Timing Role: Acts as passive crowbar during >418 V bus overvoltage, conducting within <1 ns to clamp rail voltage before IGBT desaturation triggers. Use Value: Maintains bus voltage below 602 V for 1.0 A pulses, protecting gate drivers and current sense amplifiers referenced to the DC bus. |
| Telecom Line Card Surge Protection | Automotive Body Control Module (BCM) Power Rail |
|
Use Scenario: Mounted on -48 V DC feed line of optical line terminal (OLT) to suppress induced surges from nearby AC power crosstalk or lightning coupling. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, shunting positive transients toward return path while blocking normal -48 V bias. Use Value: Withstands 600 W surges without degradation, ensuring uninterrupted service during telecom-grade surge events (ITU-T K.20/21). |
Use Scenario: Applied on 12 V battery input of BCM ECU to suppress load dump transients up to ISO 7637-2 Pulse 5a (up to 60 V, 100 ms). IC Role / Device Role / Timing Role: Not suitable for direct load dump suppression due to VWM = 376 V, but used in high-voltage auxiliary circuits (e.g., HVAC blower control) where 400 V rails exist. Use Value: Provides precise 418–462 V breakdown for systems with >300 V auxiliary supplies, complementing lower-voltage TVS arrays in multi-rail architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ440A | Same VWM (376 V) and VC (602 V), but SMC package (DO-214AB); 600 W rating, 1.0 A IPPM, RθJA = 35 °C/W vs. DO-15's 75 °C/W. | Surface-mount alternative requiring PCB redesign; better thermal performance in forced-air environments but larger footprint than axial DO-15. | Select SMBJ440A when automated assembly, space-constrained layouts, or improved board-level thermal dissipation are priorities. |
| 1.5KE440A | Same electrical specs (VWM = 376 V, VC = 602 V, PPPM = 600 W), but larger DO-201AD package; higher IFSM (200 A vs. 100 A), RθJL = 15 °C/W. | Higher surge endurance for infrequent, high-energy events; suited for utility meter or grid-tie inverter front-end protection. | Choose 1.5KE440A where mechanical robustness, higher single-pulse IFSM, or legacy DO-201AD footprint compatibility is required. |
Compared with SMBJ440A and 1.5KE440A, the P6KE440A-E3/73 offers lowest cost and smallest axial footprint for manual or wave-soldered 400 V rail protection, with adequate thermal resistance for natural-convection cooling in enclosed industrial enclosures.
Availability
P6KE440A-E3/73 is available at Aetrix Electronics and suitable for industrial power supplies, motor drive DC bus protection, telecom line card surge suppression, and high-voltage auxiliary circuits requiring stable component supply and RoHS-compliant sourcing.
Supply support for P6KE440A-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, power handling, and application-specific optimization.
The P6KE series targets cost-sensitive, high-surge industrial and telecom applications where compact axial packaging, 600 W pulse capability, and stable avalanche characteristics are prioritized over surface-mount integration.
FAQ
What is the standoff voltage (VWM) of the P6KE440A-E3/73, and why does it matter?
The P6KE440A-E3/73 has a standoff voltage (VWM) of 376 V, meaning it remains non-conductive with leakage <1.0 μA up to this DC or RMS voltage. This value must be ≥10–20 % below the protected circuit's maximum operating voltage to prevent false triggering while allowing headroom for ripple and tolerance. For a 400 V DC bus, 376 V provides appropriate margin without compromising clamping responsiveness.
Is the P6KE440A-E3/73 bidirectional or unidirectional?
The P6KE440A-E3/73 is unidirectional, indicated by the "A" suffix (not "CA"). It conducts only during reverse-biased overvoltage events - the cathode band must be connected to the higher-potential node. Bidirectional versions (e.g., P6KE440CA) are available but have different VBR symmetry and no polarity marking; the P6KE440A-E3/73 is strictly for DC rail protection with defined polarity.
What is the clamping voltage of the P6KE440A-E3/73, and how is it measured?
The P6KE440A-E3/73 clamps to 602 V at 1.0 A peak pulse current (IPPM) using a 10/1000 μs waveform. This value is measured per Fig. 1 in the datasheet and represents the maximum voltage imposed on the protected circuit during a standardized surge event. It is not a fixed resistance but the dynamic voltage drop across the avalanche junction under specified surge conditions.
Can the P6KE440A-E3/73 be used in automotive applications?
The P6KE440A-E3/73 is commercial-grade (E3 suffix) and not AEC-Q101 qualified; for automotive use, specify the HE3 variant (e.g., P6KE440AHE3/73). While the P6KE440A-E3/73 shares identical electrical specs, only HE3 undergoes temperature cycling, humidity bias, and mechanical shock testing per AEC-Q101. Use P6KE440A-E3/73 only in non-safety-critical, non-under-hood industrial or telecom systems.
What is the thermal resistance of the P6KE440A-E3/73, and how does it affect layout?
The P6KE440A-E3/73 has a junction-to-lead thermal resistance (RθJL) of 20 °C/W. This means each watt of sustained power raises the junction temperature 20 °C above the lead temperature. To manage surge-induced heating, PCB traces connected to both anode and cathode should be ≥2 mm wide and ≥10 mm long to act as heat sinks; insufficient copper will cause localized overheating and premature failure during repetitive surges.
P6KE440A-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 602V
- Current - Peak Pulse (10/1000µs):
- 1A
- Power - Peak Pulse:
- 600W
- 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-204AC (DO-15)
P6KE440A-E3/73 FAQ
1.How can I place an order for P6KE440A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE440A-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 P6KE440A-E3/73 reliable?
The price and inventory of P6KE440A-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 P6KE440A-E3/73 is usually 5 days.
3.What payment methods are accepted for P6KE440A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE440A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE440A-E3/73?
P6KE440A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE440A-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 P6KE440A-E3/73?
For technical support, including P6KE440A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE440A-E3/73 requirements.
6.How does Aetrix verify that P6KE440A-E3/73 is sourced from the original manufacturer or authorized distributors?
All P6KE440A-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 P6KE440A-E3/73 meets industry standards.
7.What is the process for return or replacement of P6KE440A-E3/73?
All P6KE440A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE440A-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 P6KE440A-E3/73 part is unused and in its original packaging.
Return procedure for P6KE440A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE440A-E3/73 Tags
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