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Vishay General Semiconductor - Diodes Division 1.5KE120CHE3/73
- Part No.:
- 1.5KE120CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE120CHE3/73.pdf
- Description:
- TVS DIODE 97.2VWM 173VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,255
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Product details
Overview
1.5KE120CHE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in power rails and signal lines. It features a 120 V breakdown voltage (VBR = 114–126 V at 1 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 165 V at 9.1 A, and operates across –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients in industrial power supplies.
For engineers reviewing the 1.5KE120CHE3/73 datasheet, 1.5KE120CHE3/73 pinout, 1.5KE120CHE3/73 application, or 1.5KE120CHE3/73 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under standardized surge waveforms, RoHS-compliant packaging details, and AEC-Q101 qualification status - all critical for automotive-grade ESD/surge co-design and BOM validation.
Technical Context
This TVS diode employs 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 transients, with a maximum reverse standoff voltage (VWM) of 102 V and leakage current ≤1.0 µA at that voltage.
The device adheres to JEDEC-standard 1.5KE case style (DO-201AD), supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits a temperature coefficient of VBR of +0.107 %/°C - enabling predictable voltage drift across operating temperature ranges in high-reliability systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 114 V / 126 V at 1 mA - defines precise clamping onset threshold for overvoltage detection |
| VWM | 102 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 165 V at 9.1 A - actual clamped voltage during 1500 W 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - peak surge power handling capability per single 10/1000 µs pulse |
| TJ max | +175 °C - enables operation in high-temperature environments such as engine control units |
| Package | DO-201AD (1.5KE) - industry-standard axial-leaded package with 0.375" lead length, UL 94 V-0 rated epoxy |
| Qualification | AEC-Q101 qualified - validated for automotive electronics reliability requirements |
Pinout & Package
1.5KE120CHE3/73 uses the DO-201AD (1.5KE) axial-leaded package. The cathode is marked by a color band on the body; the anode is unmarked. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to ground or low-side reference; conducts during positive transients when cathode is at higher potential |
| Cathode | Current exit terminal in forward bias; clamping node in reverse bias | Connected to protected line; clamps voltage to ≤165 V when transient exceeds 102 V reverse standoff |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 4 surges without degradation |
| Clamping ratio (VC/VBR) ≈ 1.38 | Indicates efficient voltage limiting with minimal overvoltage margin above breakdown |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics applications requiring zero-failure field performance |
| RoHS-compliant HE3 suffix | Confirms compliance with environmental regulations and JESD 201 Class 2 whisker resistance |
Applications
| Industrial Motor Drives | Automotive Power Distribution |
|---|---|
Use Scenario: Protection of gate drivers and DC-link sensing circuits against inductive kickback from IGBTs and contactors. IC Role / Device Role / Timing Role: Unidirectional TVS placed between high-side switch source and ground to clamp positive transients. Use Value: Limits voltage excursion to ≤165 V during 9.1 A surge, preventing latch-up or oxide rupture in 100 V-rated gate drivers. | Use Scenario: Input rail protection in battery management systems (BMS) exposed to load dump events. IC Role / Device Role / Timing Role: Primary surge suppressor on 12 V/24 V supply input, positioned upstream of DC-DC converters. Use Value: Withstands 1500 W pulses while maintaining <1 µA leakage at 102 V, ensuring low quiescent current in always-on modules. |
| Telecom Power Feeds | Industrial Sensor Signal Conditioning |
Use Scenario: Overvoltage hardening of -48 V DC telecom rectifier outputs feeding remote radio units. IC Role / Device Role / Timing Role: Reverse-biased TVS on negative rail to absorb positive transients induced by cable coupling. Use Value: Clamps 10/1000 µs surges to 165 V with <1 ns response, preserving integrity of isolated RS-485 transceivers downstream. | Use Scenario: Protection of analog front-end inputs (e.g., 4–20 mA loop receivers) in factory automation PLCs. IC Role / Device Role / Timing Role: Low-leakage TVS shunting transient energy away from precision op-amp inputs. Use Value: 1.0 µA max leakage at 102 V avoids gain error in µA-level current measurement paths. |
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 (surface-mount), VC = 193 V @ 3.1 A | Not suitable for 1500 W surge requirements; limited to PCB space-constrained designs with lower threat levels | Select only if board layout mandates SMD and surge energy is ≤600 W |
| 1.5KE120A | Same electrical specs but commercial-grade (non-AEC-Q101), E3 suffix only (no HE3) | Lacks automotive qualification; acceptable for industrial/commercial power supplies where AEC-Q101 is not mandated | Choose for cost-sensitive non-automotive applications requiring identical clamping performance |
Compared with 1.5KE120CHE3/73, SMBJ120A offers compact mounting but sacrifices 60% surge power handling and raises clamping voltage by 28 V; 1.5KE120A matches all key parameters but omits AEC-Q101 validation and enhanced whisker resistance, making it unsuitable for automotive deployment despite identical VBR, VC, and PPPM.
Availability
1.5KE120CHE3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive power distribution modules, telecom power feeds, and industrial sensor signal conditioning requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE120CHE3/73 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, rectifiers, and protection devices with emphasis on reliability, thermal performance, and application-specific qualification.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where 1500 W surge immunity and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage range of the 1.5KE120CHE3/73?
The 1.5KE120CHE3/73 has a guaranteed breakdown voltage (VBR) range of 114 V to 126 V at a test current of 1 mA, measured per JEDEC standard. This tight tolerance ensures consistent clamping onset across production lots and supports reliable overvoltage detection in safety-critical circuits. The value is confirmed in Vishay's official datasheet document 88301, revision 09-Aug-2022.
Is the 1.5KE120CHE3/73 suitable for automotive applications?
Yes, the 1.5KE120CHE3/73 is AEC-Q101 qualified (as indicated by the HE3 suffix), meaning it has passed stress tests for temperature cycling, humidity, mechanical shock, and lifetime reliability required for automotive electronics. Its +175 °C maximum junction temperature and JESD 201 Class 2 whisker resistance further validate its use in engine control, body electronics, and battery management systems.
What is the clamping voltage of the 1.5KE120CHE3/73 under a 1500 W surge?
Under a 10/1000 µs waveform delivering 1500 W peak pulse power, the 1.5KE120CHE3/73 clamps at 165 V when subjected to 9.1 A peak pulse current (IPPM). This clamping voltage is measured per standard test conditions and defines the maximum voltage seen by downstream components during surge events - a critical parameter for selecting compatible ICs and MOSFETs.
Does the 1.5KE120CHE3/73 have bidirectional capability?
No, the 1.5KE120CHE3/73 is a unidirectional TVS diode, as confirmed by its part number suffix "A" (not "CA"). It protects against positive transients only, with the cathode serving as the clamping node. Bidirectional variants (e.g., 1.5KE120CA) exist in the same family but are distinct orderables with different polarity and symmetric clamping behavior.
What package type does the 1.5KE120CHE3/73 use?
The 1.5KE120CHE3/73 uses the DO-201AD axial-leaded package, also designated as case style 1.5KE. It features a molded UL 94 V-0 epoxy body, 0.375" (9.5 mm) lead length, and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards - enabling through-hole assembly in high-reliability industrial and automotive PCBs.
1.5KE120CHE3/73 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:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE120CHE3/73 FAQ
1.How can I place an order for 1.5KE120CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE120CHE3/73 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 1.5KE120CHE3/73 reliable?
The price and inventory of 1.5KE120CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE120CHE3/73 is usually 5 days.
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Once your 1.5KE120CHE3/73 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 1.5KE120CHE3/73?
For technical support, including 1.5KE120CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE120CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE120CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE120CHE3/73 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 1.5KE120CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE120CHE3/73?
All 1.5KE120CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE120CHE3/73, 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 1.5KE120CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE120CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE120CHE3/73 Tags
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