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Vishay General Semiconductor - Diodes Division 1.5KE120-E3/54
- Part No.:
- 1.5KE120-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE120-E3/54.pdf
- Description:
- TVS DIODE 97.2VWM 173VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,230
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Product details
Overview
1.5KE120-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 114 V to 126 V breakdown voltage (VBR) at 1 mA, 102 V maximum standoff voltage (VWM), 165 V clamping voltage (VC) at 9.1 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates from –55 °C to +175 °C. It is used in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1.5KE120-E3/54 datasheet, 1.5KE120-E3/54 pinout, 1.5KE120-E3/54 application, or 1.5KE120-E3/54 equivalent, this part delivers verified transient suppression for 12 V–48 V systems with low clamping ratio, fast sub-nanosecond response, and RoHS-compliant commercial-grade packaging in axial leaded DO-201AD case.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for high-energy transient absorption. Its unidirectional polarity enables cathode-grounded configuration on positive-rail protection paths, with a 102 V working voltage ensuring compatibility with 110 V nominal DC systems while maintaining margin against normal operating transients.
The device sustains 1500 W peak pulse power under standardized 10/1000 µs waveform conditions and exhibits 0.107 %/°C temperature coefficient of VBR, enabling stable clamping performance across extended temperature ranges. Its 15.4 °C/W junction-to-lead thermal resistance supports reliable power dissipation without heatsinking in moderate-duty-cycle applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 114 V / 126 V at 1 mA - defines precise clamping initiation threshold for overvoltage events |
| VWM | 102 V - maximum continuous reverse voltage before leakage exceeds 1 µA, sets safe operating margin for 110 V DC systems |
| VC @ IPPM | 165 V at 9.1 A - limits downstream voltage during surge, providing 61 % clamping ratio (VC/VBR avg) |
| PPPM | 1500 W (10/1000 µs) - enables single-event suppression of lightning-induced surges per IEC 61000-4-5 Level 4 |
| IPPM | 9.1 A - peak surge current capability directly tied to 1500 W rating and 165 V clamping |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and industrial control cabinet deployment |
| Package | DO-201AD (axial leaded) - industry-standard through-hole package with 0.375" lead length, UL 94 V-0 molded epoxy body |
Pinout & Package
1.5KE120-E3/54 uses a two-terminal DO-201AD axial package with cathode indicated by a color band. The device has no internal circuitry beyond the PN junction; terminals serve only as anode and cathode connections for series placement in protected lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to line being protected when used in cathode-to-rail configuration; carries full surge current during clamping |
| Cathode | Current exit point in forward bias; marked with band | Typically tied to ground or common reference; establishes polarity-sensitive clamping direction for DC rail protection |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse power | Supports IEC 61000-4-5 4 kV/2 Ω combination wave testing without degradation |
| Sub-nanosecond response time | Clamps transients within 1 ns, protecting sensitive ICs before voltage overshoot damages gate oxides |
| Low incremental surge resistance | Minimizes VC rise under high di/dt, preserving clamping effectiveness during fast-rising ESD or lightning surges |
| RoHS-compliant matte tin plating | Ensures solderability per J-STD-002 and JESD 22-B102, with JESD 201 class 1A whisker resistance |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a, up to 120 V/400 ms). IC Role / Device Role / Timing Role: Primary clamping element placed between input rail and ground, absorbing energy before it reaches DC-DC converters and microcontrollers. Use Value: Limits rail voltage to ≤165 V during 120 V/400 ms transients, preventing damage to 36 V-rated input stages and enabling compliance with ISO 16750-2. | Use Scenario: 4–20 mA current loop interfaces in PLC analog input modules subjected to field wiring induced surges. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (cathode grounded) shunting transients on loop supply line to protect op-amp front-end and ADC reference. Use Value: Clamps 1 kV/500 A surge (10/1000 µs) to <165 V within 1 ns, preserving 16-bit measurement accuracy and avoiding latch-up in precision amplifiers. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Supplies |
Use Scenario: Central office power distribution to remote DSLAM units via long copper runs vulnerable to lightning induction. IC Role / Device Role / Timing Role: First-stage protector on –48 V DC feed, coordinated with secondary MOVs and gas discharge tubes in multi-stage architecture. Use Value: Handles repetitive 1500 W surges without parameter drift, maintaining 102 V standoff for stable -48 V regulation while surviving >1000 surge events. | Use Scenario: Brushed DC motor power supply in washing machine control boards, where commutation spikes exceed 200 V. IC Role / Device Role / Timing Role: Unidirectional clamp across H-bridge supply rail, diverting inductive kickback energy away from MOSFET drain-source junctions. Use Value: Limits VDS stress to 165 V during 100 A switching events, extending MOSFET lifetime and eliminating need for snubbers in cost-sensitive designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A | DO-214AA package (SMB), 114–126 V VBR, 165 V VC @ 7.3 A, 600 W PPPM | Lower peak power rating; suited for PCB space-constrained, lower-energy surge environments | Select SMBJ120A when board area is limited and surge threat level is IEC 61000-4-5 Level 2 (1 kV) |
| 1.5KE120AHE3_B | Same DO-201AD package and electrical specs, but AEC-Q101 qualified and HE3 whisker-tested (class 2) | Required for automotive safety-critical modules needing qualification evidence per ISO/TS 16949 | Choose 1.5KE120AHE3_B for under-hood applications requiring automotive grade validation and enhanced reliability screening |
Compared with 1.5KE120-E3/54, SMBJ120A trades 60 % peak power for 40 % smaller footprint, while 1.5KE120AHE3_B retains identical protection performance with added automotive qualification-enabling direct substitution only where AEC-Q101 compliance is mandated.
Availability
1.5KE120-E3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom power feeds, and consumer appliance motor drives requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE120-E3/54 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 protection devices with emphasis on reliability and application-specific optimization.
The 1.5KE series was developed for high-energy transient suppression in harsh-environment power systems, targeting automotive, industrial, and telecom infrastructure where robustness and repeatable clamping performance are critical.
FAQ
What is the breakdown voltage tolerance for 1.5KE120-E3/54?
The 1.5KE120-E3/54 has a guaranteed breakdown voltage range of 114 V to 126 V at 1 mA test current, representing ±5 % tolerance around the nominal 120 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for coordinating with downstream overvoltage lockout thresholds in power management ICs.
Can 1.5KE120-E3/54 be used in bidirectional configurations?
No, 1.5KE120-E3/54 is a unidirectional TVS diode and must be used with correct polarity-cathode connected to ground or reference potential. For bidirectional protection, Vishay offers the 1.5KE120CA variant; mixing unidirectional and bidirectional types in the same design risks failure during negative-going transients due to lack of reverse conduction path in 1.5KE120-E3/54.
What is the maximum clamping voltage of 1.5KE120-E3/54 under surge conditions?
The 1.5KE120-E3/54 exhibits a maximum clamping voltage (VC) of 165 V at its rated peak pulse current of 9.1 A (10/1000 µs waveform). This value is measured under standardized surge conditions and represents the upper limit of voltage seen by protected circuitry during worst-case transient events, enabling accurate selection of downstream component voltage ratings.
Is 1.5KE120-E3/54 RoHS compliant and lead-free?
Yes, the "E3" suffix in 1.5KE120-E3/54 explicitly denotes RoHS-compliant construction with matte tin-plated leads, meeting JEDEC J-STD-002 and JESD 22-B102 solderability standards. It also satisfies JESD 201 class 1A whisker testing requirements, making it suitable for lead-free reflow and wave soldering processes in commercial-grade manufacturing.
How does thermal derating affect 1.5KE120-E3/54's power handling above 25 °C?
1.5KE120-E3/54's peak pulse power capability remains constant up to 25 °C ambient, but derates linearly above that point per Figure 2 in the Vishay datasheet (Document 88301). At 75 °C lead temperature, its 1500 W rating drops to approximately 750 W; full derating curves are provided in the datasheet to ensure safe operation under elevated ambient or self-heating conditions.
1.5KE120-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- 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):
- 8.7A
- 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:
- 1.5KE
1.5KE120-E3/54 FAQ
1.How can I place an order for 1.5KE120-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE120-E3/54 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 1.5KE120-E3/54 reliable?
The price and inventory of 1.5KE120-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE120-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE120-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE120-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE120-E3/54?
1.5KE120-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE120-E3/54 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 1.5KE120-E3/54?
For technical support, including 1.5KE120-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE120-E3/54 requirements.
6.How does Aetrix verify that 1.5KE120-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE120-E3/54 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 1.5KE120-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE120-E3/54?
All 1.5KE120-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE120-E3/54, 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 1.5KE120-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE120-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE120-E3/54 Tags
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