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Vishay General Semiconductor - Diodes Division 1.5KE170HE3/54
- Part No.:
- 1.5KE170HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170HE3/54.pdf
- Description:
- TVS DIODE 138VWM 244VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,821
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Product details
Overview
1.5KE170HE3/54 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 min/max: 162–179 V), 145 V standoff voltage (VWM), 234 V clamping voltage 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.
For engineers reviewing the 1.5KE170HE3/54 datasheet, 1.5KE170HE3/54 pinout, 1.5KE170HE3/54 application, or 1.5KE170HE3/54 equivalent, key selection criteria include clamping performance under 10/1000 µs surge, unidirectional polarity with cathode band marking, AEC-Q101 qualification status, and compatibility with JEDEC 1.5KE package layout and lead finish requirements.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional configuration provides asymmetric conduction-blocking reverse voltage up to 145 V while clamping positive transients to ≤234 V at 6.4 A.
The device is rated for 1500 W peak pulse power per 10/1000 µs waveform at TA = 25 °C, with thermal derating governed by RθJA = 75 °C/W and RθJL = 15.4 °C/W. It supports 200 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits 0.108 %/°C temperature coefficient of VBR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 162 V / 179 V - Ensures reliable triggering above normal operating voltage while maintaining margin against tolerance drift. |
| VWM | 145 V - Maximum continuous reverse working voltage; defines safe DC blocking limit before leakage rises sharply. |
| VC @ IPPM | 234 V - Clamped voltage during 6.4 A 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPPM | 1500 W - Peak surge power handling capability; validates suitability for IEC 61000-4-5 Level 4 line surges. |
| IPPM | 6.4 A - Peak pulse current corresponding to VC; used to size series impedance for energy limiting. |
| TJ max | +175 °C - Enables operation in high-temperature environments such as automotive engine compartments or enclosed industrial enclosures. |
| Package | JEDEC 1.5KE - Axial-leaded DO-201AD outline; compatible with standard through-hole PCB mounting and wave soldering. |
Pinout & Package
1.5KE170HE3/54 uses the JEDEC-standard DO-201AD (Case Style 1.5KE) axial package with matte tin-plated leads. The cathode is marked by a color band on one end; the opposite end is anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward conduction terminal | Connects to lower-potential side of protected circuit; carries surge current during positive transients when cathode is at higher potential. |
| Cathode (banded end) | Reverse-blocking & clamping terminal | Connected to protected node (e.g., VIN rail); initiates avalanche conduction when reverse voltage exceeds VBR, shunting surge to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress. |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against lightning-induced surges and inductive switching spikes in industrial and telecom infrastructure. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC stress test conditions. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to downstream components compared to MOVs or polymer-based suppressors. |
| 0.108 %/°C VBR tempco | Predictable voltage shift across temperature range simplifies system-level margining for worst-case clamping behavior. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24 V DC input stage of programmable logic controllers (PLCs) against load dump and inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Primary unidirectional TVS clamp placed between input rail and chassis ground, responding within <1 ns to divert surge energy away from upstream rectifiers and downstream regulators. Use Value: Limits transient voltage to ≤234 V, preventing damage to 36 V-rated input capacitors and 40 V-input DC/DC controllers. | Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins in door module ECUs exposed to battery voltage transients during jump-start or alternator load dump. IC Role / Device Role / Timing Role: Unidirectional suppression on 12 V supply rail feeding the BCM; cathode tied to rail, anode to ground; activated only during positive overvoltage events. Use Value: Meets ISO 7637-2 Pulse 5a requirements with clamping margin below 24 V absolute maximum rating of transceiver inputs. |
| Telecom Remote Terminal Unit (RTU) | Consumer Appliance Motor Drive Board |
Use Scenario: Shielding RS-485 interface circuitry and power entry points in outdoor-mounted RTUs subjected to induced lightning surges on long copper runs. IC Role / Device Role / Timing Role: First-line defense on AC/DC converter input and data line terminations; coordinated with secondary GDT or MOV stages for staged energy absorption. Use Value: Withstands 1500 W surges without degradation, enabling compliance with ITU-T K.20 and Telcordia GR-1089-CORE immunity levels. | Use Scenario: Protecting gate drivers and bootstrap circuits in BLDC motor inverters inside washing machines and HVAC systems where brush arcing generates repetitive 100–500 V spikes. IC Role / Device Role / Timing Role: Mounted directly at power stage input; clamps fast-rising transients before they propagate into high-side driver ICs or MCU GPIOs. Use Value: Fast response and low VC prevent false triggering of overvoltage lockout and reduce need for oversized snubbers. |
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 | DO-214AA (SMB) package; 170 V VBR; 1000 W PPPM; 5.2 A IPPM; lower power rating and smaller footprint. | Preferred for space-constrained PCBs where 1500 W is not required; less thermal mass limits sustained surge duty cycle. | Select SMBJ170A-E3/52 when board area is critical and surge threat level is moderate (e.g., consumer-grade equipment). |
| 1.5KE170A-E3/54 | Same 1.5KE package and electrical specs, but commercial-grade (non-AEC-Q101); no whisker testing per JESD 201 Class 2. | Suitable for industrial or telecom use where automotive qualification is unnecessary; lower cost and broader availability. | Choose 1.5KE170A-E3/54 for cost-sensitive non-automotive designs requiring identical clamping performance and form factor. |
Compared with 1.5KE170HE3/54, SMBJ170A-E3/52 offers smaller size but reduced surge capacity, while 1.5KE170A-E3/54 matches mechanical and electrical behavior exactly but lacks AEC-Q101 validation-making it appropriate for non-automotive applications where qualification overhead is unnecessary.
Availability
1.5KE170HE3/54 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and telecom remote terminal units requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for 1.5KE170HE3/54 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5KE series was developed for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where robustness against lightning, ESD, and inductive switching is mission-critical.
FAQ
What is the clamping voltage of the 1.5KE170HE3/54 under a standard 10/1000 µs surge?
The 1.5KE170HE3/54 clamps to a maximum of 234 V at its rated peak pulse current of 6.4 A under a 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet (Document Number 88301, Rev. 09-Aug-2022) and represents the upper bound of voltage seen by protected circuitry during full-power surge events. Designers must ensure downstream components tolerate this clamped level with margin.
Is the 1.5KE170HE3/54 suitable for automotive applications?
Yes, the 1.5KE170HE3/54 is AEC-Q101 qualified, as confirmed by Vishay's ordering information note indicating HE3 suffix parts (including 1.5KE170HE3/54) meet AEC-Q101 requirements for stress tests like temperature cycling, HTRB, and mechanical shock. It is approved for use in automotive body electronics, infotainment power rails, and sensor interface protection where transient immunity is critical.
How does the HE3 suffix differ from the E3 suffix in the 1.5KE170HE3/54 part number?
The HE3 suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas E3 indicates RoHS compliance and JESD 201 Class 1A whisker testing only. For 1.5KE170HE3/54, the "H" explicitly confirms automotive-grade reliability validation beyond commercial-grade 1.5KE170A-E3/54, making it suitable for safety-critical vehicle subsystems.
What is the standoff voltage (VWM) of the 1.5KE170HE3/54, and why does it matter?
The standoff voltage VWM of the 1.5KE170HE3/54 is 145 V - the maximum DC or continuous reverse voltage the device blocks without significant leakage current (<1 µA). This parameter ensures the TVS remains inactive during normal operation while allowing sufficient margin below VBR (162–179 V) to avoid false triggering due to ripple, tolerance, or temperature drift.
Can the 1.5KE170HE3/54 be used in bidirectional configurations?
No, the 1.5KE170HE3/54 is a unidirectional TVS diode, indicated by the absence of "CA" in its part number. Bidirectional variants (e.g., 1.5KE170CA) exist in the same family but are electrically distinct. Using 1.5KE170HE3/54 for bidirectional protection would leave the anode-to-cathode path unprotected during negative transients, risking device failure and circuit damage.
1.5KE170HE3/54 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE170HE3/54 FAQ
1.How can I place an order for 1.5KE170HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170HE3/54 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 1.5KE170HE3/54 reliable?
The price and inventory of 1.5KE170HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE170HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE170HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE170HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE170HE3/54?
1.5KE170HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE170HE3/54 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 1.5KE170HE3/54?
For technical support, including 1.5KE170HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170HE3/54 requirements.
6.How does Aetrix verify that 1.5KE170HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE170HE3/54 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 1.5KE170HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE170HE3/54?
All 1.5KE170HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170HE3/54, 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 1.5KE170HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE170HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE170HE3/54 Tags
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