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Vishay General Semiconductor - Diodes Division 1.5KE170-E3/54
- Part No.:
- 1.5KE170-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170-E3/54.pdf
- Description:
- TVS DIODE 138VWM 244VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,705
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Product details
Overview
1.5KE170-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power rails and signal lines. It features a 170 V breakdown voltage (VBR = 162–179 V at 1 mA), 145 V stand-off voltage (VWM), 234 V clamping voltage (VC) at 6.4 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates from –55 °C to +175 °C. It is widely deployed in automotive power supply inputs and industrial motor drive DC bus protection.
For engineers reviewing the 1.5KE170-E3/54 datasheet, 1.5KE170-E3/54 pinout, 1.5KE170-E3/54 application, or 1.5KE170-E3/54 equivalent, this device delivers verified clamping performance, RoHS-compliant matte tin-plated leads, JEDEC-standard 1.5KE package, and AEC-Q101 qualification eligibility (via HE3 suffix variants), supporting high-reliability design validation in harsh environments.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity enables cathode-grounded placement on positive-rail protection paths, with clamping action triggered when reverse voltage exceeds VBR, limiting downstream voltage to ≤234 V under 10/1000 µs surges.
The device adheres to 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 - enabling predictable derating above 25 °C ambient per Fig. 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 162 V / 179 V at 1 mA - defines precise voltage threshold for clamping activation |
| VWM | 145 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 234 V at 6.4 A - peak clamped voltage during 10/1000 µs transient, limiting stress on protected ICs |
| PPPM | 1500 W - surge energy handling capacity for standardized lightning/surge immunity testing |
| IFSM | 200 A - withstands 8.3 ms half-sine surge without failure, critical for motor-switching transients |
| TJ max. | +175 °C - enables operation in under-hood automotive or high-temperature industrial enclosures |
| Package | JEDEC 1.5KE - axial-leaded, epoxy-molded case with UL 94 V-0 flammability rating |
Pinout & Package
The 1.5KE170-E3/54 is housed in the standard JEDEC 1.5KE axial package: molded epoxy body with matte tin-plated leads, 0.375" (9.5 mm) lead length, and cathode indicated by a color band. It has two terminals: anode and cathode - no internal complexity or multi-pin configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode | Clamping output / Surge current sink | Connected to protected line (e.g., 12 V rail); conducts surge current to anode when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial equipment |
| Clamping time <1 ns | Protects sensitive MOSFET gates and microcontroller I/O before damage occurs |
| RoHS-compliant E3 suffix | Meets EU RoHS Directive 2011/65/EU with JESD 201 Class 1A whisker resistance |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed power systems meeting safety certification requirements |
Applications
| Automotive Power Input Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting vehicle infotainment power input against load dump transients up to 120 V and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input to clamp surges before regulator stage. Use Value: Limits voltage to ≤234 V during 10/1000 µs transients, preventing latch-up or gate oxide rupture in downstream PMICs. | Use Scenario: Safeguarding IGBT gate drivers and MCU power supplies in variable-frequency drives exposed to inductive switching spikes. IC Role / Device Role / Timing Role: Mounted across DC bus rails to absorb commutation energy and suppress dv/dt-induced coupling. Use Value: Withstands 200 A surge current (8.3 ms) and clamps at 234 V, preserving isolation integrity and avoiding false triggering. |
| Telecom Line Interface Protection | Consumer Appliance Power Supply |
Use Scenario: Shielding Ethernet PHY power pins and auxiliary bias rails from ESD and induced surges on outdoor telecom cabinets. IC Role / Device Role / Timing Role: Secondary-level TVS on 3.3 V/5 V auxiliary rails, coordinated with primary MOV and gas discharge tube stages. Use Value: Fast <1 ns response complements slower primary protectors, capturing residual high-frequency energy missed by bulk devices. | Use Scenario: Securing AC-DC adapter output rails in washing machines and HVAC controllers against mains-borne transients. IC Role / Device Role / Timing Role: Final-stage protector on regulated 12 V/24 V outputs feeding microcontrollers and sensors. Use Value: 175 °C max junction temperature allows placement near heat-generating transformers without derating loss. |
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 | Surface-mount SMB package (vs. axial 1.5KE); same VBR range (162–179 V), 600 W PPPM (vs. 1500 W) | Limited to lower-energy transients; unsuitable for load dump or high-current inductive switching | Select only when board space constraints prohibit axial components and surge levels are ≤600 W |
| 1.5KE170AHE3_B | Same 1.5KE package and electrical specs, but AEC-Q101 qualified and HE3 whisker-tested (Class 2) | Required for automotive production programs needing PPAP documentation and extended reliability validation | Choose for OEM automotive designs where qualification compliance is mandatory; otherwise 1.5KE170-E3/54 suffices for commercial/industrial use |
Compared with SMBJ170A, the 1.5KE170-E3/54 provides 2.5× higher surge power handling and axial through-hole mounting for mechanical robustness; versus 1.5KE170AHE3_B, it lacks AEC-Q101 certification but offers identical clamping performance at lower cost for non-automotive applications.
Availability
1.5KE170-E3/54 is available at Aetrix Electronics and suitable for automotive power input protection, industrial motor drive DC bus safeguarding, and telecom line interface surge suppression requiring stable component supply across high-volume production cycles.
Supply support for 1.5KE170-E3/54 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, precision, and application-specific optimization.
The 1.5KE series was engineered for high-energy transient suppression in demanding environments - delivering consistent clamping, thermal stability, and rugged packaging for automotive, industrial, and infrastructure applications.
FAQ
What is the breakdown voltage tolerance for 1.5KE170-E3/54?
The 1.5KE170-E3/54 has a specified breakdown voltage range of 162 V to 179 V at 1 mA test current, corresponding to ±5.5% tolerance around the nominal 170 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for coordinating with upstream fuses or downstream overvoltage lockout thresholds in power systems.
Is 1.5KE170-E3/54 bidirectional or unidirectional?
The 1.5KE170-E3/54 is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It conducts only in reverse bias above VBR, with the cathode marked by a color band. Bidirectional variants (e.g., 1.5KE170CA) exist in the same family but are distinct orderable parts - the 1.5KE170-E3/54 must be used in polarity-aware configurations where the anode connects to ground or the lowest potential node.
What is the maximum clamping voltage of 1.5KE170-E3/54 under surge conditions?
The maximum clamping voltage (VC) of the 1.5KE170-E3/54 is 234 V at a peak pulse current (IPPM) of 6.4 A, tested with a 10/1000 µs waveform. This value represents the worst-case voltage seen by downstream circuitry during standardized surge events, and is confirmed in the Vishay datasheet Document Number 88301, Table on page 2. Designers use this to verify margin against absolute maximum ratings of protected ICs.
Does 1.5KE170-E3/54 meet automotive qualification standards?
The 1.5KE170-E3/54 itself is a commercial-grade part and not AEC-Q101 qualified; however, its direct variant 1.5KE170AHE3_B is AEC-Q101 qualified and shares identical electrical characteristics and package. For automotive production, specify the HE3_B suffix version - the 1.5KE170-E3/54 remains suitable for industrial, telecom, and consumer applications where AEC-Q101 is not mandated.
What is the thermal resistance of 1.5KE170-E3/54, and how does it affect power dissipation?
The 1.5KE170-E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W and junction-to-ambient (RθJA) of 75 °C/W. Under continuous DC conditions, its 6.5 W power dissipation rating assumes TL = 75 °C on leads (per Fig. 5). In transient suppression, thermal mass absorbs short surges, but repeated high-duty-cycle events require attention to PCB copper area and lead soldering to maintain RθJL performance and avoid exceeding 175 °C TJ max.
1.5KE170-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE170-E3/54 FAQ
1.How can I place an order for 1.5KE170-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170-E3/54 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 1.5KE170-E3/54 reliable?
The price and inventory of 1.5KE170-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE170-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE170-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE170-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE170-E3/54?
1.5KE170-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE170-E3/54 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 1.5KE170-E3/54?
For technical support, including 1.5KE170-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170-E3/54 requirements.
6.How does Aetrix verify that 1.5KE170-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE170-E3/54 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 1.5KE170-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE170-E3/54?
All 1.5KE170-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170-E3/54, 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 1.5KE170-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE170-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE170-E3/54 Tags
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