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Vishay General Semiconductor - Diodes Division 1.5KE170CHE3/73
- Part No.:
- 1.5KE170CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170CHE3/73.pdf
- Description:
- TVS DIODE 138VWM 244VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,852
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Product details
Overview
1.5KE170CHE3/73 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 170 V breakdown voltage (VBR = 162–179 V at 1 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 234 V at 6.4 A, and operates across –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the 1.5KE170CHE3/73 datasheet, 1.5KE170CHE3/73 pinout, 1.5KE170CHE3/73 application, or 1.5KE170CHE3/73 equivalent, this page delivers verified electrical specs, JEDEC 1.5KE package details, clamping performance under transient stress, thermal derating behavior, and AEC-Q101-qualified alternatives for automotive-grade designs.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its unidirectional polarity enables cathode-referenced clamping on positive transients only, with a maximum reverse leakage of 1.0 µA at 145 V standoff voltage (VWM).
The device complies with JEDEC standard 1.5KE case style, supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits a temperature coefficient of VBR of +0.108 %/°C - critical for stable clamping across wide ambient ranges in motor drives and telecom power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 162 V / 179 V at 1 mA - defines precise clamping onset threshold for overvoltage detection |
| VWM | 145 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 234 V at 6.4 A - clamped voltage during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge energy handling capacity per industry-standard test |
| RθJL | 15.4 °C/W - junction-to-lead thermal resistance enabling direct PCB copper pour heat sinking |
| TJ max. | +175 °C - allows operation in under-hood automotive or high-temp industrial enclosures |
| AEC-Q101 | Qualified (HE3 suffix) - validated for automotive electronics per stress-test requirements |
Pinout & Package
Package: JEDEC 1.5KE molded epoxy case (Case Style 1.5KE), axial-leaded, RoHS-compliant matte tin-plated leads. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for unidirectional clamping | Connected to ground or low-side return path; conducts during positive transients at cathode |
| Cathode | Clamping output terminal | Connected to protected line (e.g., 12 V rail); limits voltage to ≤234 V when transient exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under humidity and thermal cycling |
| 1500 W peak pulse rating | Withstands lightning-induced surges (IEC 61000-4-5 Level 4) without degradation |
| 0.108 %/°C VBR tempco | Minimizes clamping voltage drift over –40 °C to +125 °C ambient, critical for precision power rails |
| AEC-Q101 qualified (HE3) | Validated for automotive infotainment, body control modules, and ADAS power domains |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation meets fire-safety requirements in enclosed industrial equipment |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and MCU I/O against inductive kickback from 24 V solenoid switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V supply and ground, clamping transients within 1 ns. Use Value: Limits voltage to ≤234 V during 6.4 A surge, preventing latch-up or oxide breakdown in 3.3 V logic interfaces. |
Use Scenario: Surge suppression on LIN bus power line exposed to load dump events in vehicle door modules. IC Role / Device Role / Timing Role: Cathode tied to 12 V LIN supply rail; absorbs 1500 W pulses without failure. Use Value: Maintains <1 µA leakage at 145 V standby, preserving battery life while surviving ISO 7637-2 Pulse 5a. |
| Telecom Power Supplies | Industrial Sensor Signal Conditioning |
Use Scenario: Input-stage protection for 48 V DC-DC converters subjected to lightning-induced surges on outdoor PoE links. IC Role / Device Role / Timing Role: Primary clamping device on primary-side input, coordinated with MOV and fuse. Use Value: Clamps 10/1000 µs transients to 234 V before secondary-side regulators see overvoltage stress. |
Use Scenario: Protection of analog front-end inputs (e.g., 0–10 V pressure sensor) in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on signal line referenced to system ground. Use Value: Adds <0.1 pF parasitic capacitance, preserving signal integrity up to 1 MHz bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170A-E3/52 | DO-214AA package, 600 W rating, lower IPPM (33.3 A), same VBR range (162–179 V) | Surface-mount footprint; suited for space-constrained PCBs but lower surge margin | Select when board area is limited and peak surge energy stays below 600 W |
| 1.5KE170AHE3_B | Same 1.5KE package and electrical specs; HE3_B denotes AEC-Q101 qualification with revision B process | Identical mechanical and electrical behavior; certified for automotive use cases requiring traceable lot data | Choose for new automotive designs where AEC-Q101 compliance documentation is mandatory |
Compared with 1.5KE170CHE3/73, SMBJ170A-E3/52 offers SMT compatibility at reduced surge robustness, while 1.5KE170AHE3_B provides identical protection performance with formal AEC-Q101 certification - making it the preferred drop-in replacement for automotive production.
Availability
1.5KE170CHE3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, long-lifecycle support, and AEC-Q101-qualified surge protection.
Supply support for 1.5KE170CHE3/73 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 environments.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting applications where legacy MOVs lack speed and precision - especially in 12 V–48 V DC systems with strict leakage and clamping voltage requirements.
FAQ
What is the clamping voltage of the 1.5KE170CHE3/73 under a 10/1000 µs surge?
The 1.5KE170CHE3/73 clamps to a maximum of 234 V when subjected to its rated peak pulse current of 6.4 A (10/1000 µs waveform). This value is measured per JEDEC standard test conditions and ensures protected circuitry remains below destructive voltage thresholds during transient events such as inductive switching or ESD coupling.
Is the 1.5KE170CHE3/73 suitable for automotive applications?
Yes - the "HE3" suffix confirms AEC-Q101 qualification for automotive use. The 1.5KE170CHE3/73 has passed stress tests including temperature cycling, humidity bias, and high-acceleration mechanical shock, making it appropriate for body electronics, lighting control, and infotainment power domains where reliability under vibration and thermal extremes is required.
How does the 1.5KE170CHE3/73 differ from bidirectional variants like 1.5KE170CA?
The 1.5KE170CHE3/73 is unidirectional and clamps only positive transients relative to its cathode; it cannot suppress negative-going surges. In contrast, 1.5KE170CA provides symmetrical clamping for AC-coupled or floating lines. The 1.5KE170CHE3/73 offers tighter leakage control (1.0 µA at 145 V) and is preferred for DC rail protection where polarity is fixed.
What is the thermal resistance from junction to lead (RθJL) for the 1.5KE170CHE3/73?
The 1.5KE170CHE3/73 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W. This enables effective heat transfer to PCB copper pours or heatsinks via its axial leads, supporting continuous power dissipation up to 6.5 W at TL = 75 °C - essential for sustained surge duty cycles in industrial power converters.
Can the 1.5KE170CHE3/73 be used in parallel to increase surge handling capacity?
Yes - multiple 1.5KE170CHE3/73 devices can be paralleled to distribute surge current, provided matched VBR tolerances (±5 %) and symmetric PCB layout minimize current imbalance. Derating guidelines in Vishay Document 88301 recommend ≤80 % of total rated IPPM per device to ensure balanced sharing under transient conditions.
1.5KE170CHE3/73 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):
- 138V
- Voltage - Breakdown (Min):
- 153V
- Voltage - Clamping (Max) @ Ipp:
- 244V
- Current - Peak Pulse (10/1000µs):
- 6.1A
- 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
1.5KE170CHE3/73 FAQ
1.How can I place an order for 1.5KE170CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170CHE3/73 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 1.5KE170CHE3/73 reliable?
The price and inventory of 1.5KE170CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE170CHE3/73 is usually 5 days.
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Once your 1.5KE170CHE3/73 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 1.5KE170CHE3/73?
For technical support, including 1.5KE170CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE170CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE170CHE3/73 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 1.5KE170CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE170CHE3/73?
All 1.5KE170CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170CHE3/73, 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 1.5KE170CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE170CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE170CHE3/73 Tags
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