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Taiwan Semiconductor Corporation 1V5KE56A
- Part No.:
- 1V5KE56A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE56A.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,927
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Product details
Overview
1V5KE56A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with breakdown voltage 53.2–58.8 V at 1 mA, reverse stand-off voltage 47.8 V, clamping voltage 77.0 V at 19.5 A peak pulse current, and maximum junction temperature of 175°C. It protects power rails and I/O lines in industrial power supplies and motor drives against ESD and lightning-induced surges.
For engineers reviewing the 1V5KE56A datasheet, 1V5KE56A pinout, 1V5KE56A application, or 1V5KE56A equivalent, key selection criteria include clamping voltage vs. protected IC's absolute maximum rating, peak pulse current capability under 10/1000 µs waveform, thermal derating above 75°C ambient, and DO-201 lead-form compatibility with existing PCB footprints.
Technical Context
The 1V5KE56A operates as a silicon avalanche diode, entering controlled breakdown when transient voltage exceeds its reverse stand-off voltage (VRWM = 47.8 V), limiting downstream voltage to ≤77.0 V at 19.5 A. Its glass-passivated junction ensures stable leakage (<1 µA above 10 V) and low incremental surge resistance for consistent clamping performance across repeated transients.
Designed for single-polarity DC protection, it features fast response time (<1 ns), meets JEDEC JESD201 Class 2 whisker resistance, and is rated for non-repetitive 8.3 ms half-sine surge current up to 200 A in unidirectional configuration - though its 1500 W peak pulse rating applies specifically at 1.0 ms (10/1000 µs waveform).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy surges without failure in lightning or inductive-switching events |
| Breakdown Voltage VBR @ IT=1 mA | 53.2–58.8 V - defines minimum voltage at which avalanche conduction begins; tight tolerance ensures predictable turn-on |
| Reverse Stand-off Voltage VRWM | 47.8 V - maximum continuous DC or RMS voltage the device blocks before significant leakage |
| Clamping Voltage VC @ IPPM | 77.0 V @ 19.5 A - maximum voltage seen by protected circuit during full-rated surge; critical for IC survivability |
| Peak Pulse Current IPPM | 19.5 A - surge current level at which clamping voltage is specified; correlates directly with system-level surge test compliance |
| Junction Temperature Range | −55°C to +175°C - supports operation in harsh environments including automotive under-hood and industrial motor control enclosures |
| Package | DO-201 - axial-leaded through-hole package with tin-plated leads compliant to J-STD-002 solderability |
Pinout & Package
1V5KE56A uses the standard DO-201 axial package with cathode band marking. Leads are pure tin-plated, suitable for wave and hand soldering per J-STD-002. Polarity is marked by a cathode band on the body; the banded end is the cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive reference for reverse-biased operation | Connected to ground or low-impedance return path; forms current sink during transient clamp |
| Cathode (banded end) | Protected line connection | Connected to the line being protected (e.g., 48 V rail); conducts avalanche current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage current under thermal cycling and humidity stress |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., EFT bursts), improving clamping fidelity |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and environmental requirements for industrial and consumer end equipment |
| JEDEC JESD201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability applications, eliminating risk of latent short circuits |
Applications
| Industrial Power Supply Protection | Motor Drive I/O Protection |
|---|---|
Use Scenario: 48 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and field wiring surges. IC Role / Device Role: Primary overvoltage clamp placed between input rail and ground, upstream of DC-DC converter. Use Value: Limits transient voltage to ≤77.0 V, preventing damage to 100 V-rated MOSFETs and gate drivers downstream. | Use Scenario: Digital I/O lines (e.g., encoder feedback, limit switch inputs) in servo drive controllers subject to inductive kickback. IC Role / Device Role: Point-of-entry protection on signal lines referenced to common ground, shunting energy before reaching MCU GPIO. Use Value: Clamps 1 kV EFT bursts to safe levels while maintaining <1 µA leakage at 47.8 V operating voltage. |
| Lighting System Surge Protection | Telecom Power Interface Protection |
Use Scenario: Constant-current LED driver input in outdoor streetlight, subjected to induced lightning surges on AC mains feeders. IC Role / Device Role: Secondary-stage TVS after MOV-based primary protection, handling residual fast transients. Use Value: Provides precise 47.8 V standoff and 77.0 V clamping to protect 60 V-rated bridge rectifier and bulk capacitor. | Use Scenario: −48 V DC power interface in telecom remote radio head (RRH), exposed to power-line induced surges. IC Role / Device Role: Unidirectional clamp on negative supply rail, referenced to chassis ground. Use Value: Withstands 1500 W peak pulses and maintains reliability over extended thermal cycles in sealed outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A | DO-214AA package; 58.0–64.4 V VBR; 70.1 V VC @ 17.1 A; lower 600 W peak power rating | Suitable for space-constrained PCBs but requires layout revision; lower surge margin limits use in high-risk lightning zones | Select SMBJ58A only if board area is constrained and surge threat level is limited to IEC 61000-4-5 Level 3 (0.5 kV) |
| P6KE56A | DO-15 package; identical 53.2–58.8 V VBR and 77.0 V VC; same 1500 W rating; higher thermal resistance due to smaller package | Compatible with legacy DO-15 footprints but derates faster above 75°C ambient; not recommended for enclosed high-temp enclosures | Choose P6KE56A only for cost-sensitive, low-power-density designs where thermal management is assured |
Compared with SMBJ58A and P6KE56A, the 1V5KE56A delivers identical clamping performance in a DO-201 package offering superior thermal dissipation and proven reliability in industrial-grade 1500 W surge events - making it optimal for high-availability power systems requiring long-term field robustness.
Availability
1V5KE56A is available at Aetrix Electronics and suitable for industrial power supply protection, motor drive I/O protection, lighting system surge protection, and telecom power interface protection requiring stable component supply and long-lifecycle support.
Supply support for 1V5KE56A 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for industrial, automotive, and computing markets.
The 1V5KE series was developed to deliver high-reliability, high-power transient suppression in standardized axial packages for ruggedized power conversion and control systems.
FAQ
What is the maximum clamping voltage of the 1V5KE56A under full-rated surge conditions?
The 1V5KE56A has a maximum clamping voltage (VC) of 77.0 V when subjected to its rated peak pulse current of 19.5 A under the standard 10/1000 µs waveform. This value is measured at the device terminals and represents the highest voltage imposed on the protected circuit during a full 1500 W transient event. Designers must ensure downstream components have sufficient voltage margin above this clamping level.
Is the 1V5KE56A suitable for bidirectional transient protection?
No, the 1V5KE56A is a unidirectional TVS diode and is not rated for bidirectional operation. For bipolar protection, the designated variant is 1V5KE56CA, which includes symmetrical breakdown characteristics in both directions. Using the 1V5KE56A in reverse-biased AC applications may result in premature failure or undefined clamping behavior.
What is the reverse leakage current specification for the 1V5KE56A at its rated VRWM?
At its reverse stand-off voltage of 47.8 V, the 1V5KE56A exhibits a maximum reverse leakage current (IR) of 5 µA at 25°C ambient temperature. This low leakage ensures minimal power loss in standby operation and avoids false triggering in high-impedance sensing circuits, supporting reliable long-term operation in battery-backed or energy-efficient systems.
How does the DO-201 package of the 1V5KE56A compare thermally to DO-15 or SMC packages?
The DO-201 package used by the 1V5KE56A provides lower thermal resistance than DO-15 and higher surge endurance than SMC variants due to its larger copper leadframe and optimized molding compound. At 75°C ambient, it maintains full 1500 W pulse rating with 0.375 inch lead length, whereas DO-15 versions derate more aggressively above 60°C - making DO-201 ideal for thermally demanding industrial deployments.
Does the 1V5KE56A meet RoHS and halogen-free requirements?
Yes, the 1V5KE56A is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and its pure tin-plated leads satisfy J-STD-002 solderability standards. These certifications confirm suitability for environmentally regulated industrial, medical, and consumer end equipment without requiring material declaration waivers.
1V5KE56A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AD, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 19.5A
- 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
1V5KE56A FAQ
1.How can I place an order for 1V5KE56A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE56A 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 1V5KE56A reliable?
The price and inventory of 1V5KE56A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE56A is usually 5 days.
3.What payment methods are accepted for 1V5KE56A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE56A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE56A?
1V5KE56A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE56A 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 1V5KE56A?
For technical support, including 1V5KE56A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE56A requirements.
6.How does Aetrix verify that 1V5KE56A is sourced from the original manufacturer or authorized distributors?
All 1V5KE56A 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 1V5KE56A meets industry standards.
7.What is the process for return or replacement of 1V5KE56A?
All 1V5KE56A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE56A, 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 1V5KE56A part is unused and in its original packaging.
Return procedure for 1V5KE56A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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