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Vishay General Semiconductor - Diodes Division 1.5KE120-E3/73
- Part No.:
- 1.5KE120-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE120-E3/73.pdf
- Description:
- TVS DIODE 97.2VWM 173VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,767
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Product details
Overview
1.5KE120-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 120 V breakdown voltage (VBR = 114–126 V), 1500 W peak pulse power (10/1000 µs), clamping voltage of 165 V at 9.1 A, 102 V maximum working voltage (VWM), and operates across –55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial I/O protection.
For engineers reviewing the 1.5KE120-E3/73 datasheet, 1.5KE120-E3/73 pinout, 1.5KE120-E3/73 application, or 1.5KE120-E3/73 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping performance under standardized transients, thermal resistance (RθJA = 75 °C/W), and direct alternative part comparisons for ESD/lightning surge hardening designs.
Technical Context
The 1.5KE120-E3/73 uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity enables cathode-referenced clamping on positive-going surges, with VF = 5.0 V at 100 A forward surge current - critical for protecting downstream MOSFET gates and IC power pins.
It complies with JEDEC DO-201AD mechanical standards and supports 200 A non-repetitive forward surge (8.3 ms half-sine). Thermal derating follows a defined curve: full 6.5 W power dissipation at TL = 75 °C, dropping linearly above that point per Figure 5 in Document 88301.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 114 V / 126 V at 1 mA test current - defines reliable conduction onset for overvoltage events |
| VWM | 102 V maximum - ensures no leakage or conduction during normal 120 V nominal system operation |
| VC @ IPPM | 165 V at 9.1 A peak pulse - limits protected circuit voltage during 1500 W transient (10/1000 µs) |
| PPPM | 1500 W - sustains single high-energy lightning or inductive-switching surges without failure |
| IFSM | 200 A (8.3 ms half-sine) - withstands repetitive motor or relay coil turn-off spikes |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and industrial ambient environments |
| RθJA | 75 °C/W - determines required PCB copper area or heatsinking for continuous 6.5 W dissipation |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), molded epoxy body with matte tin-plated leads; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge return path | Connected to ground or low-impedance reference; completes clamping loop during positive transients |
| Cathode | Protected line connection | Connected to input rail (e.g., 12 V battery feed); conducts when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| 1500 W peak pulse rating | Handles IEC 61000-4-5 Level 4 (4 kV, 2 Ω source) surges without degradation |
| Clamping ratio (VC/VBR) | 1.45 (165 V / 114 V) - minimizes overvoltage stress on downstream 150 V-rated components |
| Response time | <1 ns - activates before most ICs experience latch-up or gate oxide rupture |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance - suitable for lead-free reflow assembly |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a, up to 60 V/100 ms) and alternator transients. IC Role / Device Role: Primary clamping device placed between battery rail and DC-DC converter input. Use Value: Limits input voltage to ≤165 V during 1500 W surges, preventing damage to 36 V-rated input stages. |
Use Scenario: 24 V digital input modules receiving signals from field sensors in factory automation. IC Role / Device Role: Front-end TVS on each channel to suppress inductive kickback from solenoid valves and relay coils. Use Value: Clamps 10/1000 µs transients to 165 V within 1 ns, preserving 30 V-rated optocoupler and microcontroller GPIO integrity. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control Boards |
Use Scenario: Central office power distribution feeding remote DSLAM units over long copper pairs susceptible to lightning-induced surges. IC Role / Device Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy. Use Value: Provides precise 102 V standoff and 165 V clamping to protect 130 V-rated DC-DC controllers without false triggering. |
Use Scenario: Washing machine main board where BLDC motor driver FETs generate switching noise and back-EMF spikes. IC Role / Device Role: Rail clamp on 310 V DC bus to prevent overvoltage failure of gate drivers and MCU power supplies. Use Value: Withstands 200 A 8.3 ms surge (IEC 61000-4-4) while maintaining VWM margin above 310 V × 0.9 = 279 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A | Lower PPPM (600 W), smaller SMB package (DO-214AA), VC = 193 V @ 3.1 A | Used where space-constrained PCBs accept reduced surge margin; not suitable for ISO 7637-2 Pulse 5a | Select when footprint size is critical and peak surge energy is ≤600 W |
| 1.5KE120AHE3_B | AEC-Q101 qualified, identical electrical specs and DO-201AD package, HE3 whisker class 2 | Required for automotive safety-critical modules needing component-level qualification | Choose for automotive OEM programs requiring AEC-Q101 documentation and traceability |
Compared with 1.5KE120-E3/73, SMBJ120A trades 60 % peak power and higher clamping for 50 % smaller footprint, while 1.5KE120AHE3_B adds AEC-Q101 compliance without altering electrical behavior - enabling drop-in use in qualified automotive systems but requiring different sourcing and traceability controls.
Availability
1.5KE120-E3/73 is available at Aetrix Electronics and suitable for automotive power input protection, industrial PLC I/O hardening, telecom DC feed surge suppression, and consumer appliance motor control board designs requiring stable component supply and consistent JEDEC DO-201AD form factor.
Supply support for 1.5KE120-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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-power transient suppression in harsh environments - delivering robust 1500 W surge handling, wide temperature operation, and JEDEC-standardized packaging for automated assembly and field reliability.
FAQ
What is the clamping voltage of the 1.5KE120-E3/73 under a 10/1000 µs surge?
The 1.5KE120-E3/73 clamps to a maximum of 165 V at its rated peak pulse current of 9.1 A (10/1000 µs waveform), as specified in Vishay Document 88301 Table on page 2. This value ensures protected circuits remain below 165 V during standardized surge events, directly supporting design margin calculations for downstream 150 V-rated components. The 1.5KE120-E3/73 achieves this with sub-nanosecond response and low dynamic impedance.
Is the 1.5KE120-E3/73 RoHS compliant and lead-free assembly compatible?
Yes, the "E3" suffix confirms the 1.5KE120-E3/73 is RoHS compliant and meets JESD 201 Class 1A whisker resistance requirements. Its matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102, supporting standard lead-free reflow profiles up to 260 °C peak. The 1.5KE120-E3/73 also passes solder dip testing at 275 °C for 10 seconds per JESD 22-B106, making it suitable for both wave and reflow processes.
Does the 1.5KE120-E3/73 have AEC-Q101 qualification?
No, the 1.5KE120-E3/73 is commercial-grade only. AEC-Q101 qualification applies only to variants with the "HE3" suffix (e.g., 1.5KE120AHE3_B), as noted in Document 88301 footnote (2) on page 3. The 1.5KE120-E3/73 shares identical electrical and mechanical specifications but lacks the extended reliability testing and traceability required for automotive safety applications. For AEC-Q101 needs, specify 1.5KE120AHE3_B instead of 1.5KE120-E3/73.
What is the maximum working voltage (VWM) for the 1.5KE120-E3/73?
The 1.5KE120-E3/73 has a maximum working voltage (VWM) of 102 V, meaning it remains in high-impedance state with ≤1 µA leakage up to this DC or RMS voltage. This allows safe use on 100 V nominal systems (e.g., 24 V industrial buses with 4× ripple margin or 120 VAC-derived DC rails), ensuring no false triggering during normal operation while retaining full 114–126 V breakdown tolerance. The 1.5KE120-E3/73 maintains this VWM across its full operating temperature range.
Can the 1.5KE120-E3/73 be used in bidirectional configurations?
No, the 1.5KE120-E3/73 is unidirectional only. Bidirectional versions in the 1.5KE family use the "CA" suffix (e.g., 1.5KE120CA) and are available only up to 1.5KE220CA per Document 88301 note on page 1. The 1.5KE120-E3/73 features a cathode band marking and conducts only when anode-to-cathode voltage exceeds VBR; it does not suppress negative-going transients. For bidirectional protection, select 1.5KE120CA - not the 1.5KE120-E3/73.
1.5KE120-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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-E3/73 FAQ
1.How can I place an order for 1.5KE120-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE120-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 1.5KE120-E3/73 reliable?
The price and inventory of 1.5KE120-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 1.5KE120-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE120-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE120-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE120-E3/73?
1.5KE120-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE120-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 1.5KE120-E3/73?
For technical support, including 1.5KE120-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE120-E3/73 requirements.
6.How does Aetrix verify that 1.5KE120-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE120-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 1.5KE120-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE120-E3/73?
All 1.5KE120-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE120-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 1.5KE120-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE120-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE120-E3/73 Tags
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