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onsemi 1V5KE440A
- Part No.:
- 1V5KE440A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE440A.pdf
- Description:
- TVS DIODE 376VWM 602VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:6,035
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Product details
Overview
1V5KE440A from ON Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It delivers 1500 W peak pulse power at 1.0 ms, clamps transients to 602 V at 1 A test current, and exhibits <1.0 ps response time from 0 V to breakdown. It is used in industrial power supplies to protect rectifier stages against lightning-induced surges.
For engineers reviewing the 1V5KE440A datasheet, pinout, applications, or equivalent options, key selection criteria include its 376–462 V breakdown range, 602 V clamping voltage at peak pulse current, DO-201AE axial package, glass-passivated junction, and UL #E258596 certification.
Technical Context
The 1V5KE440A operates as a unidirectional avalanche diode with a glass-passivated PN junction, enabling robust surge handling without degradation under repeated 1500 W pulses. Its breakdown voltage (VBR) is specified at 1 mA, with guaranteed minimum 376 V and maximum 462 V across production lots.
Clamping performance is defined by VC = 602 V at IPPM = 1 A under 10/1000 µs waveform, and reverse leakage remains ≤5 µA at VRWM = 376 V. Thermal operation spans –55 °C to +175 °C junction temperature, supported by 5.0 W steady-state dissipation at 75 °C ambient with 0.375″ lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W at 1 ms - sustains single lightning-surge events per IEC 61000-4-5 Level 4 without failure |
| Breakdown Voltage VBR | 376–462 V at 1 mA - defines precise overvoltage triggering threshold for system-level protection coordination |
| Clamping Voltage VC | 602 V at IPPM = 1 A - limits downstream component stress during worst-case surge conditions |
| Reverse Standoff Voltage VRWM | 376 V - maximum continuous DC operating voltage before leakage exceeds 5 µA |
| Response Time | <1.0 ps - ensures sub-nanosecond turn-on to suppress fast-rising ESD and switching transients |
| Package | DO-201AE axial - industry-standard through-hole footprint compatible with automated insertion and wave soldering |
| UL Certification | UL #E258596 - validates safety compliance for end-equipment regulatory approval |
Pinout & Package
1V5KE440A uses the DO-201AE axial-leaded package with cathode indicated by a color band. The device has two terminals: anode and cathode, configured for unidirectional conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected line's low-side reference | Completes surge path to ground when cathode is held above anode by >VBR |
| Cathode | Protected circuit node connection; marked with color band | Acts as the clamped output node-held at ≤602 V during 1500 W transients |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse rating | Meets IEC 61000-4-5 4th-edition surge immunity requirements for industrial mains-connected equipment |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for downstream ICs |
| UL #E258596 certification | Reduces time-to-market for UL/CSA-certified end products by eliminating need for external TVS validation |
| –55 °C to +175 °C operating range | Supports deployment in under-hood automotive power modules and outdoor telecom rectifiers |
Applications
| Industrial AC-DC Power Supplies | Telecom Rectifier Modules |
|---|---|
Use Scenario: Protecting primary-side bridge rectifiers against lightning-induced surges on 380 VAC input lines. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus after rectification to clamp positive-going transients. Use Value: Limits voltage excursion to 602 V, preventing breakdown of 600 V-rated electrolytic capacitors and MOSFETs. | Use Scenario: Safeguarding -48 V DC distribution buses in central office power systems against load-dump transients. IC Role / Device Role / Timing Role: Cathode tied to -48 V rail, anode grounded-clamps negative surges to ≤602 V magnitude relative to ground. Use Value: Maintains bus integrity during hot-swap events and generator switching, avoiding controller latch-up. |
| Solar Inverter DC Link Protection | Railway Signaling Power Interfaces |
Use Scenario: Suppressing switching spikes and grid fault transients on 1000 V DC link between PV array and inverter H-bridge. IC Role / Device Role / Timing Role: Mounted across DC+ and DC− rails to absorb bidirectional energy during IGBT commutation faults. Use Value: Withstands 1500 W pulses without degradation, extending service life in high-reliability solar farms. | Use Scenario: Shielding 110 V DC signaling circuits in trackside control cabinets from traction return current coupling. IC Role / Device Role / Timing Role: Connected between signal line and chassis ground to divert induced surges away from optocouplers and RS-485 transceivers. Use Value: Sub-ns response ensures protection before transient energy couples into sensitive logic inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ440A | Same 440 V standoff, but 400 W peak power rating and SMA package | Lower surge capacity suits consumer-grade 24 V systems; unsuitable for industrial 1500 W requirements | Select only where space-constrained SMT layout and lower surge levels are acceptable |
| Vishay 1N5628 | 440 V VRWM, DO-201AE package, but 1000 W peak power and higher clamping at 640 V | Marginally higher clamping reduces protection headroom for 600 V-rated components | Acceptable for legacy designs with derated voltage margins; verify VC compatibility with downstream FETs |
Compared with SMAJ440A and 1N5628, the 1V5KE440A provides superior 1500 W surge handling and tighter 602 V clamping in the same axial DO-201AE footprint-making it the preferred choice for industrial and telecom infrastructure requiring full IEC 61000-4-5 compliance.
Availability
1V5KE440A is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, telecom rectifier modules, and solar inverter DC link protection requiring stable component supply and long-lifecycle support.
Supply support for 1V5KE440A 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
ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensor, and discrete devices for automotive, industrial, and cloud power applications.
The 1V5KE440A belongs to ON Semiconductor's legacy TVS diode portfolio-originally developed by Fairchild-designed specifically for high-energy, high-voltage DC line protection in harsh environments.
FAQ
What is the breakdown voltage range for the 1V5KE440A?
The 1V5KE440A has a guaranteed breakdown voltage (VBR) range of 376 V to 462 V at 1 mA test current, measured per JEDEC standards. This range ensures consistent overvoltage triggering across production lots while allowing design margin for system-level coordination with upstream fuses and downstream capacitors. The 1V5KE440A maintains this specification across its full operating temperature range of –55 °C to +175 °C.
Is the 1V5KE440A unidirectional or bidirectional?
1V5KE440A is a unidirectional TVS diode, indicated by the absence of "C" suffix (which denotes bidirectional variants like 1V5KE440CA). It conducts only when cathode voltage exceeds anode voltage by ≥VBR, making it ideal for DC bus protection where polarity is fixed. The cathode is marked with a color band on the DO-201AE package, and the 1V5KE440A must be oriented correctly in-circuit to avoid forward conduction during normal operation.
What is the clamping voltage of the 1V5KE440A at its rated peak pulse current?
The 1V5KE440A clamps to 602 V at its peak pulse current (IPPM) of 1 A under the standard 10/1000 µs waveform. This value is measured with the device mounted per JEDEC test conditions and represents the maximum voltage seen by downstream components during a full 1500 W surge event. The 1V5KE440A achieves this clamping with low incremental resistance, minimizing overshoot beyond the specified VC.
Does the 1V5KE440A have UL certification?
Yes, the 1V5KE440A is UL certified under file #E258596, confirming compliance with UL 497B for primary protector applications. This certification covers dielectric strength, flammability, and surge endurance testing, enabling direct use in UL-listed end equipment without additional TVS validation. The 1V5KE440A's UL listing applies specifically to its DO-201AE package configuration and unidirectional construction.
What is the maximum steady-state power dissipation for the 1V5KE440A?
The 1V5KE440A has a steady-state power dissipation rating of 5.0 W at 75 °C ambient temperature with 0.375 inch lead length, per JEDEC derating curves. This value reflects continuous DC leakage and minor ripple dissipation-not surge handling. For reliable long-term operation, PCB layout must ensure adequate copper area and airflow, especially when the 1V5KE440A is used near other heat-generating components in industrial power modules.
1V5KE440A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AD, Axial
- Series:
- -
- Packaging:
- Bulk
- 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):
- 2.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-201AD
1V5KE440A FAQ
1.How can I place an order for 1V5KE440A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE440A 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 1V5KE440A reliable?
The price and inventory of 1V5KE440A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE440A is usually 5 days.
3.What payment methods are accepted for 1V5KE440A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE440A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE440A?
1V5KE440A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE440A 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 1V5KE440A?
For technical support, including 1V5KE440A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE440A requirements.
6.How does Aetrix verify that 1V5KE440A is sourced from the original manufacturer or authorized distributors?
All 1V5KE440A 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 1V5KE440A meets industry standards.
7.What is the process for return or replacement of 1V5KE440A?
All 1V5KE440A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE440A, 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 1V5KE440A part is unused and in its original packaging.
Return procedure for 1V5KE440A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE440A Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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