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Vishay General Semiconductor - Diodes Division 1.5KE170HE3/73
- Part No.:
- 1.5KE170HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170HE3/73.pdf
- Description:
- TVS DIODE 138VWM 244VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,292
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Product details
Overview
1.5KE170HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power 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 against lightning-induced surges and inductive switching transients in industrial and automotive power supplies.
For engineers reviewing the 1.5KE170HE3/73 datasheet, 1.5KE170HE3/73 pinout, 1.5KE170HE3/73 application, or 1.5KE170HE3/73 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), RoHS-compliant matte tin plating, and JEDEC-standard 1.5KE package dimensions - all critical for surge protection design validation and BOM sourcing.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 µs waveform with 0.01% duty cycle, and it maintains stable VBR with a temperature coefficient of 0.108 %/°C.
The device supports 200 A non-repetitive forward surge current (IFSM) and exhibits 145 V stand-off voltage (VWM) with ≤1.0 µA reverse leakage. Thermal performance is characterized by RθJA = 75 °C/W and RθJL = 15.4 °C/W, enabling reliable operation on PCBs with minimal heatsinking in high-temperature environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 162 V / 179 V at 1 mA - defines precise voltage threshold where clamping initiates under transient stress |
| 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 1500 W surge, directly limiting downstream component stress |
| PPPM | 1500 W (10/1000 µs) - peak transient energy absorption capability without failure |
| IFSM | 200 A (8.3 ms half-sine) - surge current handling for unidirectional power rail protection |
| TJ range | –55 °C to +175 °C - enables deployment in under-hood automotive and industrial power converters |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability per stress test standards |
Pinout & Package
Package: JEDEC-standard 1.5KE molded epoxy case (Case Style 1.5KE), RoHS-compliant, matte tin-plated leads, UL 94 V-0 rated molding compound. Dimensions: 5.3 mm × 5.3 mm × 9.5 mm (L × W × H), lead spacing 7.2 mm, lead diameter 1.07 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential node in unidirectional configuration; conducts during positive transients |
| Cathode | Reverse-biased clamping terminal | Marked with color band; connected to protected line; enters avalanche breakdown above VWM |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under repeated surge stress |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) in single-device implementation |
| AEC-Q101 qualification | Validated for automotive power electronics including engine control units and battery management systems |
| Sub-nanosecond response | Clamps transients within <1 ns, protecting fast-switching MOSFETs and gate drivers before damage occurs |
| JESD 201 Class 2 whisker resistance | HE3 suffix confirms enhanced tin whisker mitigation for high-reliability industrial and automotive solder joints |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V vehicle power distribution networks from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input, clamping spikes up to 1500 W. Use Value: Prevents latch-up or gate oxide rupture in MCU power supervisors and CAN transceivers during ISO 7637-2 Pulse 5a events. |
Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff protection on 24 V DC sensor inputs, absorbing 10/1000 µs transients from solenoid switching. Use Value: Maintains system uptime by eliminating false triggering and input-stage failures in factory automation equipment. |
| Telecom DC Power Feeds | MOSFET Gate Driver Protection |
Use Scenario: Safeguarding remote radio unit (RRU) power inputs exposed to lightning-induced surges on outdoor telecom lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on –48 V DC feed, coordinated with upstream MOVs and filters. Use Value: Limits voltage excursion to ≤234 V during 10/1000 µs surges, preserving DC-DC converter front-end rectifiers and controllers. |
Use Scenario: Protecting high-side N-channel MOSFET gate drivers in motor inverters from shoot-through-inducing voltage spikes. IC Role / Device Role / Timing Role: Clamp placed between gate and source, suppressing dV/dt-induced Miller turn-on during switching transitions. Use Value: Reduces risk of destructive short-circuit events by limiting gate-source voltage to safe levels during fast edge transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170A-E3/52 | Lower PPPM (600 W), smaller SMB package (3.5 mm × 4.5 mm), higher VC (275 V @ 2.2 A) | Better suited for space-constrained PCBs with moderate surge requirements (IEC 61000-4-5 Level 2) | Select when board area is limited and full 1500 W rating is not required; verify thermal derating for ambient >75 °C |
| 1.5KE170A-E3/54 | Same electrical specs but commercial-grade (non-AEC-Q101), E3 suffix only (JESD 201 Class 1A whisker test) | Approved for consumer and industrial applications; not certified for automotive under-hood use | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not mandated; identical footprint and solder profile |
Compared with 1.5KE170HE3/73, SMBJ170A-E3/52 trades surge capacity and thermal robustness for compact size, while 1.5KE170A-E3/54 retains identical protection performance but omits automotive qualification - making the HE3/73 uniquely suitable for AEC-Q101–mandated power rail protection where both reliability and 1500 W clamping are essential.
Availability
1.5KE170HE3/73 is available at Aetrix Electronics and suitable for automotive power systems, industrial PLCs, telecom DC feeds, and MOSFET gate driver circuits requiring stable component supply with guaranteed AEC-Q101 compliance and long-lifecycle support.
Supply support for 1.5KE170HE3/73 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-energy transient suppression in harsh-environment power electronics, emphasizing rugged packaging, tight VBR tolerance, and AEC-Q101 qualification for under-hood and industrial control use cases.
FAQ
What is the breakdown voltage tolerance for 1.5KE170HE3/73?
The 1.5KE170HE3/73 has a specified breakdown voltage range of 162 V to 179 V at 1 mA test current, representing ±5.3% tolerance around the nominal 170 V rating. This tight VBR window ensures predictable clamping onset in overvoltage events and is confirmed in Vishay's 88301 datasheet Table on page 2. The 1.5KE170HE3/73 achieves this via precision junction doping and glass passivation process control.
Is 1.5KE170HE3/73 bidirectional or unidirectional?
The 1.5KE170HE3/73 is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It functions like a Zener diode in reverse bias and conducts only from cathode to anode during overvoltage events. Bidirectional variants (e.g., 1.5KE170CA) are separate part numbers and are not interchangeable with 1.5KE170HE3/73 due to different internal structure and polarity marking.
Does 1.5KE170HE3/73 meet AEC-Q101 requirements?
Yes, the 1.5KE170HE3/73 is explicitly AEC-Q101 qualified, as documented in Vishay's 88301 datasheet footnote (2) on page 3. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - confirming suitability for automotive power electronics such as body control modules and ADAS power supplies.
What is the clamping voltage of 1.5KE170HE3/73 at its rated peak pulse current?
The 1.5KE170HE3/73 clamps to a maximum of 234 V at its peak pulse current of 6.4 A (10/1000 µs waveform), per the Electrical Characteristics table on page 2 of the Vishay 88301 datasheet. This VC value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and is critical for ensuring downstream components remain within absolute maximum ratings.
How does the HE3 suffix differ from standard E3 in 1.5KE170HE3/73?
The "HE3" suffix in 1.5KE170HE3/73 denotes RoHS compliance plus JESD 201 Class 2 whisker resistance - a higher reliability level than standard "E3" (Class 1A). This distinction is vital for automotive and industrial applications where tin whisker growth could cause latent field failures. The HE3 variant undergoes extended environmental stress screening to ensure robustness in high-humidity, high-temperature operating conditions.
1.5KE170HE3/73 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):
- 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
1.5KE170HE3/73 FAQ
1.How can I place an order for 1.5KE170HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170HE3/73 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 1.5KE170HE3/73 reliable?
The price and inventory of 1.5KE170HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE170HE3/73 is usually 5 days.
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Once your 1.5KE170HE3/73 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 1.5KE170HE3/73?
For technical support, including 1.5KE170HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170HE3/73 requirements.
6.How does Aetrix verify that 1.5KE170HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE170HE3/73 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 1.5KE170HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE170HE3/73?
All 1.5KE170HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170HE3/73, 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 1.5KE170HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE170HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE170HE3/73 Tags
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