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Vishay General Semiconductor - Diodes Division 1.5KE170A-E3/54
- Part No.:
- 1.5KE170A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170A-E3/54.pdf
- Description:
- TVS DIODE 145VWM 234VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:1,958
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Product details
Overview
1.5KE170A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 170 V breakdown voltage (VBR = 162–179 V at 1 mA), 145 V maximum working voltage (VWM), 234 V clamping voltage (VC) at 6.4 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates across -55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the 1.5KE170A-E3/54 datasheet, 1.5KE170A-E3/54 pinout, 1.5KE170A-E3/54 application, or 1.5KE170A-E3/54 equivalent, key selection criteria include clamping performance under 10/1000 µs transients, unidirectional polarity with cathode band marking, RoHS-compliant matte tin leads, and compatibility with JEDEC-standard 1.5KE case mounting on PCBs requiring high-energy surge immunity.
Technical Context
This device implements a silicon avalanche junction structure with glass passivation for stable breakdown characteristics and low incremental surge resistance. Its unidirectional configuration enables integration into DC-biased circuits where reverse conduction must be blocked until clamping threshold is exceeded.
It delivers 1500 W peak pulse power handling per 10/1000 µs waveform at 0.01% duty cycle, with thermal resistance of 75 °C/W (junction-to-ambient) and 15.4 °C/W (junction-to-lead), supporting reliable operation under repetitive surge conditions when mounted with adequate lead length (0.375″) and PCB copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 162 V / 179 V at 1 mA - defines precise avalanche initiation window for predictable clamping onset |
| VWM | 145 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 234 V at 6.4 A - clamped voltage during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak surge energy absorption capability for lightning or inductive switch-off events |
| IFSM | 200 A - non-repetitive forward surge rating (8.3 ms half-sine), critical for input rectifier stage protection |
| TJ max. | +175 °C - extended junction temperature range enabling use in under-hood automotive or high-ambient industrial environments |
| Package | DO-201AD (Case Style 1.5KE) - industry-standard axial-leaded package with 0.375″ lead length for mechanical robustness and thermal relief |
Pinout & Package
1.5KE170A-E3/54 uses the DO-201AD axial package (Case Style 1.5KE), with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. The cathode is marked by a color band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected circuit; conducts only during forward surge events (e.g., reverse polarity fault) |
| Cathode | Avalanche clamping terminal | Marked with band; connected to higher-potential rail; initiates clamping when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA at VWM) across temperature and lifetime |
| 1500 W peak pulse power (10/1000 µs) | Provides robust immunity against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation |
| Fast response time (~1 ns) | Clamps transients before sensitive downstream components (e.g., MCU I/O, gate drivers) experience overstress |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, suitable for commercial-grade high-reliability PCB assembly |
| UL 497B recognized (QVGQ2) | Validated for telecom and industrial surge protection systems requiring safety agency certification |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate driver ICs and bootstrap FETs against inductive kickback from BLDC motor phase switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus input to clamp voltage spikes exceeding 170 V during turn-off. Use Value: Limits VDS stress on 200 V-rated MOSFETs to ≤234 V, preventing avalanche failure and extending system MTBF. | Use Scenario: Input protection for LIN bus transceivers and microcontroller power rails exposed to load dump and jump-start events. IC Role / Device Role / Timing Role: Primary clamping device on 12 V supply line upstream of LDO regulators and CAN/LIN interface ICs. Use Value: Withstands 1500 W surges per ISO 7637-2 Pulse 5a while maintaining VWM margin above nominal 14 V battery voltage. |
| Telecom Power Feeds | Consumer AC-DC Adapters |
Use Scenario: Secondary-side overvoltage suppression on -48 V DC distribution lines feeding remote radio units. IC Role / Device Role / Timing Role: Unidirectional TVS connected between output rail and ground to absorb lightning-induced surges coupled via Ethernet or coaxial feeders. Use Value: Clamps 10/1000 µs transients to 234 V, ensuring downstream DC-DC converters remain within absolute maximum ratings. | Use Scenario: Output rail protection in universal-input offline SMPS powering smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Final-stage TVS on regulated 5 V/12 V outputs to suppress coupling from primary-side MOSFET ringing or EMI filter resonance. Use Value: Low 1 µA leakage at 145 V VWM prevents standby power loss; fast response avoids latch-up in USB-PD controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170A | DO-214AA package (SMB), 170 V VBR, 1000 W PPPM, lower IPPM (5.3 A), smaller footprint | Better suited for space-constrained PCBs; lower surge rating limits use to Level 3 IEC 61000-4-5 | Select when board area is constrained and 1000 W surge immunity suffices; not drop-in due to different package and thermal profile |
| 1.5KE170CA | Bidirectional variant (170 V symmetrical VBR), same PPPM and package, but no polarity marking | Required for AC-coupled or floating signal lines (e.g., RS-485, audio inputs) where bidirectional clamping is mandatory | Use only where true bidirectional protection is needed; not interchangeable with 1.5KE170A-E3/54 in DC-biased circuits due to reverse conduction path |
Compared with SMBJ170A and 1.5KE170CA, the 1.5KE170A-E3/54 offers superior 1500 W surge handling in the proven DO-201AD package, making it optimal for high-energy industrial and automotive front-end protection where thermal mass and mechanical ruggedness are prioritized over miniaturization or AC symmetry.
Availability
1.5KE170A-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and consumer AC-DC adapters requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE170A-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, power handling, and qualification for harsh environments.
The 1.5KE series was engineered specifically for high-energy transient suppression in industrial, automotive, and telecom infrastructure, delivering consistent 1500 W clamping performance in a standardized axial package optimized for manual and automated through-hole assembly.
FAQ
What is the breakdown voltage tolerance for 1.5KE170A-E3/54?
The 1.5KE170A-E3/54 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 across production lots and temperature extremes, critical for coordinating with downstream overvoltage protection thresholds in power management ICs.
Does 1.5KE170A-E3/54 meet automotive qualification standards?
The base 1.5KE170A-E3/54 is commercial grade and not AEC-Q101 qualified. However, Vishay offers the 1.5KE170AHE3_B variant (same electrical specs) which is AEC-Q101 qualified for automotive applications. Engineers selecting 1.5KE170A-E3/54 for automotive use must verify whether their design allows commercial-grade parts or requires the HE3 suffix version with formal qualification testing.
How does the clamping voltage of 1.5KE170A-E3/54 compare to its breakdown voltage?
The 1.5KE170A-E3/54 clamps at 234 V when subjected to its rated 6.4 A peak pulse current (10/1000 µs), which is 37% above its minimum breakdown voltage of 162 V. This VC/VBR ratio reflects low incremental surge resistance and efficient energy diversion, ensuring protected circuits see minimal overvoltage beyond the device's rated standoff level.
Can 1.5KE170A-E3/54 be used in parallel for higher surge current handling?
Yes, 1.5KE170A-E3/54 can be paralleled to increase total surge current capacity, but only with careful layout: matched devices, symmetrical PCB traces, and shared thermal plane are required to ensure current sharing. Vishay's application notes confirm this technique for achieving >200 A single-event handling, though derating and thermal coupling must be modeled per IEC 61000-4-5 test conditions.
What is the maximum allowable lead temperature during soldering for 1.5KE170A-E3/54?
The 1.5KE170A-E3/54 supports solder dip at 275 °C maximum for 10 seconds per JESD 22-B106, and its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 for solderability. Reflow profiles must stay within JEDEC Level 2a moisture sensitivity limits, and post-solder inspection should verify absence of band discoloration indicating thermal overstress.
1.5KE170A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 145V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 234V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- 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
1.5KE170A-E3/54 FAQ
1.How can I place an order for 1.5KE170A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170A-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 1.5KE170A-E3/54 reliable?
The price and inventory of 1.5KE170A-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 1.5KE170A-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE170A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE170A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE170A-E3/54?
1.5KE170A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE170A-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 1.5KE170A-E3/54?
For technical support, including 1.5KE170A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170A-E3/54 requirements.
6.How does Aetrix verify that 1.5KE170A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE170A-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 1.5KE170A-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE170A-E3/54?
All 1.5KE170A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170A-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 1.5KE170A-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE170A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE170A-E3/54 Tags
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