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Vishay General Semiconductor - Diodes Division 1.5KE170C-E3/73
- Part No.:
- 1.5KE170C-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170C-E3/73.pdf
- Description:
- TVS DIODE 138VWM 244VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,323
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Product details
Overview
1.5KE170C-E3/73 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in signal and power lines. It features a 170 V breakdown voltage (VBR = 162–179 V), 1500 W peak pulse power (10/1000 µs), clamping voltage of 234 V at 6.4 A, 1.0 µA max reverse leakage at 145 V stand-off voltage, and operates from –55 °C to +175 °C. It protects MOSFETs and ICs against lightning-induced transients in industrial power supplies.
For engineers reviewing the 1.5KE170C-E3/73 datasheet, 1.5KE170C-E3/73 pinout, 1.5KE170C-E3/73 application, or 1.5KE170C-E3/73 equivalent, this part delivers verified bidirectional clamping performance, RoHS-compliant matte tin leads, UL 94 V-0 molded epoxy packaging, and AEC-Q101 qualification eligibility - critical for automotive sensor interface and telecom line protection design validation.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping across both polarities without external polarity management, supporting AC-coupled interfaces and differential bus lines.
It complies with IEC 61000-4-5 (surge immunity) and meets JESD 22-B106 solder dip requirements (275 °C, 10 s). Thermal resistance is 15.4 °C/W (junction-to-lead), enabling reliable operation under repetitive 0.01% duty cycle surges when mounted on adequate copper land patterns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 162 V / 179 V - ensures reliable conduction onset above normal operating voltage while avoiding false triggering |
| VWM | 145 V - maximum continuous working voltage before leakage exceeds 1.0 µA, defining safe AC/DC rail margin |
| VC @ IPPM | 234 V - clamped voltage during 1500 W transient, limiting downstream device stress to ≤234 V |
| PPPM | 1500 W - peak surge handling per 10/1000 µs waveform, suitable for Level 4 IEC 61000-4-5 testing |
| IPPM | 6.4 A - peak current capability at rated clamping voltage, directly sizing PCB trace and fuse requirements |
| TJ max | +175 °C - extended junction temperature rating supports under-hood automotive and high-ambient industrial use |
| Package | DO-201AD (Case Style 1.5KE) - axial-leaded, 0.375" lead length, UL 94 V-0 compliant epoxy body |
Pinout & Package
1.5KE170C-E3/73 is housed in a DO-201AD (Case Style 1.5KE) package with two axial leads. As a bidirectional TVS, it has no polarity marking; both terminals are functionally identical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Provides identical clamping behavior for positive and negative surges - no orientation required during placement |
| Lead 1 / Lead 2 | Thermal and electrical interface | Matte tin-plated, J-STD-002 solderable leads; 15.4 °C/W junction-to-lead thermal resistance enables direct PCB heat sinking |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power (10/1000 µs) | Supports EN 61000-4-5 Level 4 (4 kV/2 Ω) surge testing without derating in standard layouts |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience overvoltage - critical for protecting high-speed logic and ADC inputs |
| UL 94 V-0 epoxy molding | Prevents flame propagation in fault conditions, satisfying safety requirements for industrial and telecom enclosures |
| AEC-Q101 qualification option | HE3 suffix variants meet automotive-grade reliability standards for engine control and ADAS sensor interfaces |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and feedback circuits against inductive kickback from 48 V BLDC motor windings. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across DC bus or phase outputs to limit voltage spikes to ≤234 V. Use Value: Prevents MOSFET avalanche failure and op-amp input damage during rapid PWM switching transitions. | Use Scenario: ESD and load-dump suppression on LIN bus lines connecting cabin temperature and pressure sensors. IC Role / Device Role / Timing Role: Primary surge shunt located at connector entry point, operating in parallel with data line series resistors. Use Value: Maintains signal integrity during ISO 7637-2 Pulse 5a (load dump) events up to 60 V, 400 ms duration. |
| Telecom Power Feeds | Renewable Energy Inverters |
Use Scenario: Surge protection on -48 V DC distribution rails feeding remote radio units in cellular base stations. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between power rail and chassis ground to divert lightning-induced common-mode surges. Use Value: Limits rail voltage excursion to 234 V during 10/1000 µs surges, preserving PMIC and FPGA power sequencing. | Use Scenario: DC-link overvoltage suppression in solar string inverters exposed to grid-switching transients. IC Role / Device Role / Timing Role: Parallel-connected TVS across 600 V DC bus to clamp fast-rising transients from contactor bounce or grid faults. Use Value: Reduces need for oversized DC-link capacitors by limiting transient overshoot to <234 V at 6.4 A peak. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA | Lower PPPM (600 W), smaller SMB package (vs. DO-201AD), 235 V clamping at 2.6 A | Targeted at space-constrained PCBs; insufficient for 1500 W IEC 61000-4-5 Level 4 compliance | Select only if system-level surge testing is limited to Level 2 (1 kV) and board area is constrained. |
| 1.5SMC170CA | Same 1500 W rating and 170 V nominal, but SMC package (surface-mount), 235 V clamping at 6.4 A | Requires rework for through-hole replacement; thermal performance differs due to lower RθJL (10.5 °C/W vs. 15.4 °C/W) | Choose for automated assembly where footprint change and thermal redesign are acceptable. |
Compared with 1.5KE170C-E3/73, SMBJ170CA offers compactness at reduced surge capacity, while 1.5SMC170CA matches power rating but demands surface-mount layout adaptation and delivers slightly better thermal conduction - neither is pin-compatible, and both require schematic and layout review before substitution.
Availability
1.5KE170C-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power feeds, and renewable energy inverters requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE170C-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 diodes, rectifiers, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments - targeting industrial automation, transportation, and infrastructure systems where robustness against lightning, ESD, and inductive switching is non-negotiable.
FAQ
What does the "C" suffix indicate in 1.5KE170C-E3/73?
The "C" suffix in 1.5KE170C-E3/73 denotes bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., 1.5KE170A), it has no cathode marking and functions identically regardless of terminal orientation. This makes 1.5KE170C-E3/73 ideal for AC-coupled lines, differential buses, and applications where polarity reversal is possible.
Is 1.5KE170C-E3/73 RoHS compliant and halogen-free?
Yes, 1.5KE170C-E3/73 carries the "E3" suffix, which certifies full RoHS compliance per EU Directive 2011/65/EU and halogen-free status per IEC 61249-2-21. The molding compound meets UL 94 V-0 flammability rating, and the matte tin-plated leads conform to J-STD-002 solderability standards. No lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE substances exceed threshold limits in 1.5KE170C-E3/73.
What is the maximum clamping voltage of 1.5KE170C-E3/73 under surge conditions?
The maximum clamping voltage (VC) of 1.5KE170C-E3/73 is 234 V, measured at its peak pulse current (IPPM) of 6.4 A using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range (–55 °C to +175 °C) and defines the upper voltage limit imposed on protected circuitry during worst-case transients - a key parameter for validating MOSFET and IC voltage ratings in designs using 1.5KE170C-E3/73.
Can 1.5KE170C-E3/73 be used in automotive applications?
1.5KE170C-E3/73 itself is commercial-grade; however, the AEC-Q101-qualified variant 1.5KE170C-HE3_B is available for automotive use. While 1.5KE170C-E3/73 shares identical electrical specs and DO-201AD packaging, only the HE3_B version undergoes stress testing per AEC-Q101 (including HTSL, TC, UHAST). For under-hood or safety-critical modules, specify 1.5KE170C-HE3_B - the 1.5KE170C-E3/73 remains suitable for non-automotive industrial and telecom applications.
How does the thermal resistance of 1.5KE170C-E3/73 affect PCB layout?
With a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W, 1.5KE170C-E3/73 relies on adequate copper land area and short, wide traces to dissipate surge energy. Layout best practice requires ≥25 mm² of 2 oz. copper connected to each lead, minimizing trace length to reduce inductance. Failure to provide sufficient copper results in localized heating beyond the 175 °C TJ limit during repetitive surges - a critical consideration when designing for sustained operation in 1.5KE170C-E3/73-based protection circuits.
1.5KE170C-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:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE170C-E3/73 FAQ
1.How can I place an order for 1.5KE170C-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170C-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 1.5KE170C-E3/73 reliable?
The price and inventory of 1.5KE170C-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 1.5KE170C-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE170C-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE170C-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE170C-E3/73?
1.5KE170C-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE170C-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 1.5KE170C-E3/73?
For technical support, including 1.5KE170C-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170C-E3/73 requirements.
6.How does Aetrix verify that 1.5KE170C-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE170C-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 1.5KE170C-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE170C-E3/73?
All 1.5KE170C-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170C-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 1.5KE170C-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE170C-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE170C-E3/73 Tags
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