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Vishay General Semiconductor - Diodes Division 1.5KE170CA-E3/51
- Part No.:
- 1.5KE170CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170CA-E3/51.pdf
- Description:
- TVS DIODE 145VWM 234VC 1.5KE
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
1.5KE170CA-E3/51 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal 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 across –55 °C to +175 °C junction temperature.
For engineers reviewing the 1.5KE170CA-E3/51 datasheet, 1.5KE170CA-E3/51 pinout, 1.5KE170CA-E3/51 application, or 1.5KE170CA-E3/51 equivalent, this device serves as a robust, glass-passivated, RoHS-compliant TVS for automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression where fast response (<1 ns), low clamping ratio, and AEC-Q101-qualified reliability are required.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical electrical characteristics in forward and reverse directions. Its silicon junction is glass passivated for stable performance and enhanced reliability under repetitive surge stress.
The device delivers 1500 W peak pulse power per the 10/1000 µs waveform standard, with clamping voltage tightly controlled at 234 V under 6.4 A transient current. Thermal resistance is specified at RθJL = 15.4 °C/W (junction-to-lead), enabling effective heat dissipation through PCB copper pours or lead-frame conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 162 V / 179 V - Ensures reliable triggering above normal operating voltage while avoiding false clamping during transients. |
| VWM | 145 V - Maximum continuous working voltage; defines safe DC or RMS AC operating limit before leakage rises. |
| IPPM | 6.4 A - Peak pulse current capability under 10/1000 µs waveform; determines minimum trace width and layout robustness. |
| VC @ IPPM | 234 V - Clamped voltage during full-rated surge; directly limits stress on downstream ICs like microcontrollers or transceivers. |
| PPPM | 1500 W - Surge energy handling capacity; supports compliance with IEC 61000-4-5 Level 4 (4 kV/2 Ω) when properly mounted. |
| TJ max | +175 °C - Enables operation in under-hood automotive or high-ambient industrial environments without derating. |
| Package | Case Style 1.5KE - Axial-leaded DO-201AD package; compatible with wave soldering and manual rework, with 0.375" lead length standard. |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body meeting UL 94 V-0. Matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Bidirectional polarity - no cathode marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Conducts surge current toward ground or return path during negative transients; symmetrical with cathode. |
| Cathode | Transient current entry (positive polarity) | Conducts surge current toward ground or return path during positive transients; functionally identical to anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates polarity concerns in AC-coupled or floating signal lines. |
| 1500 W peak pulse power | Rated per 10/1000 µs waveform at 0.01% duty cycle - meets IEC 61000-4-5 surge immunity requirements for industrial and automotive ports. |
| Glass passivated junction | Stable VBR tolerance and low leakage over life - ensures long-term reliability in harsh thermal and humidity environments. |
| AEC-Q101 qualified option | 1.5KE170CAHE3_B variant available - validated for automotive electronics including engine control, ADAS sensors, and infotainment interfaces. |
| Low incremental surge resistance | Enables tight clamping (VC/VBR ≈ 1.45) - minimizes voltage overshoot seen by protected ICs during fast-rising ESD or lightning-induced surges. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary surge shunt element placed between signal line and chassis ground, responding within <1 ns to clamp transients before IC damage occurs. Use Value: Limits voltage to ≤234 V during 1500 W surges, preserving signal integrity and preventing latch-up in 5 V or 12 V interface ICs. | Use Scenario: Shielding digital input modules in programmable logic controllers from induced surges on 24 V DC field wiring in factory automation. IC Role / Device Role / Timing Role: Standoff protector on each channel, operating at 145 V VWM to tolerate normal 24 V ±20% variation while clamping >170 V transients. Use Value: Withstands repeated 10/1000 µs surges up to 6.4 A without degradation, supporting 10-year field life in industrial environments. |
| Telecom Line Interface | Power Supply Input Protection |
Use Scenario: Secondary surge protection on POTS or DSL line interfaces in network termination equipment subjected to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Bidirectional clamping device across tip/ring lines, leveraging symmetry to suppress both polarity surges without external polarity management. Use Value: Delivers matched clamping in both directions (VC = 234 V), ensuring balanced protection and preventing differential-mode distortion in voice/data signals. | Use Scenario: Input-stage transient suppression on 12–48 V DC power rails feeding switching regulators and microcontrollers in embedded systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor, conducting surge energy away from upstream rectifiers and downstream regulators during line faults. Use Value: Handles 1500 W surges without thermal runaway due to low RθJL (15.4 °C/W), maintaining system uptime during grid disturbances. |
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 | DO-214AA package; lower PPPM = 600 W; VC = 275 V @ 3.1 A; smaller footprint but reduced surge margin. | Suitable for space-constrained consumer electronics; not rated for automotive AEC-Q101 unless specified. | Select when board area is critical and surge threat level is ≤Level 3 (2 kV/12 Ω); verify thermal relief for repeated events. |
| 1.5SMC170CA | SMD package (DO-214AB); same PPPM = 1500 W; VC = 234 V @ 6.4 A; RoHS-compliant but not AEC-Q101 qualified in standard grade. | Preferred for automated SMT assembly; requires reflow profile validation for lead-free process. | Choose for high-volume production with pick-and-place; confirm JEDEC moisture sensitivity level (MSL) and floor life handling. |
Compared with 1.5KE170CA-E3/51, SMBJ170CA offers compact size at the cost of 60% lower surge power handling, while 1.5SMC170CA matches peak power but lacks AEC-Q101 qualification in base grade - making 1.5KE170CA-E3/51 the preferred choice for ruggedized, through-hole automotive and industrial designs requiring proven qualification and axial lead mechanical robustness.
Availability
1.5KE170CA-E3/51 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and DC power supply input stages requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for 1.5KE170CA-E3/51 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and application-specific optimization.
The 1.5KE series is engineered for high-energy transient suppression in demanding environments, targeting automotive, industrial, and telecom applications where robustness, consistency, and qualification to AEC-Q101 or UL 497B are mandatory design requirements.
FAQ
What is the breakdown voltage range for the 1.5KE170CA-E3/51?
The 1.5KE170CA-E3/51 has a guaranteed breakdown voltage (VBR) range of 162 V to 179 V at 1.0 mA test current, measured per JEDEC standards. This range ensures consistent clamping behavior across production lots and supports reliable coordination with downstream overvoltage protection thresholds. The 1.5KE170CA-E3/51 maintains this specification under ambient temperatures from –55 °C to +125 °C, with minimal drift due to its low temperature coefficient (0.108 %/°C).
Is the 1.5KE170CA-E3/51 suitable for automotive applications?
Yes - the 1.5KE170CA-E3/51 is RoHS-compliant and offered in an AEC-Q101-qualified variant (1.5KE170CAHE3_B). While the base 1.5KE170CA-E3/51 is commercial-grade, its construction - glass-passivated junction, UL 94 V-0 molding compound, and 175 °C max junction temperature - aligns with automotive environmental stress requirements. For certified use in safety-critical modules, specify the HE3_B suffix version of the 1.5KE170CA-E3/51.
What is the clamping voltage of the 1.5KE170CA-E3/51 under maximum surge conditions?
The 1.5KE170CA-E3/51 clamps to 234 V when subjected to its rated peak pulse current of 6.4 A (10/1000 µs waveform). This value is measured per industry-standard test conditions and represents the maximum voltage imposed on protected circuitry during a full-rated transient event. The 1.5KE170CA-E3/51 achieves this with a clamping ratio (VC/VBR) of approximately 1.45, indicating efficient voltage limiting relative to its breakdown threshold.
Does the 1.5KE170CA-E3/51 have polarity markings?
No - the 1.5KE170CA-E3/51 is a bidirectional TVS diode and carries no polarity marking on its epoxy body. Unlike unidirectional variants (e.g., 1.5KE170A), it functions identically in both voltage polarities, making it ideal for AC-coupled lines, floating grounds, or differential signal pairs where polarity assignment is undefined or variable. The 1.5KE170CA-E3/51 relies on symmetrical internal structure rather than external marking for correct orientation.
What is the maximum steady-state power dissipation for the 1.5KE170CA-E3/51?
The 1.5KE170CA-E3/51 has a maximum steady-state power dissipation (PD) of 6.5 W when mounted on an infinite heatsink at lead temperature (TL) = 75 °C. In typical PCB applications without heatsinking, derating applies per Figure 5 in the Vishay datasheet (Document Number: 88301); at TL = 50 °C, PD remains near 6.5 W, but drops to ~4.5 W at TL = 100 °C. This rating governs continuous leakage-related heating, not transient surge handling.
1.5KE170CA-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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
1.5KE170CA-E3/51 FAQ
1.How can I place an order for 1.5KE170CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170CA-E3/51 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 1.5KE170CA-E3/51 reliable?
The price and inventory of 1.5KE170CA-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE170CA-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE170CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE170CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE170CA-E3/51?
1.5KE170CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE170CA-E3/51 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 1.5KE170CA-E3/51?
For technical support, including 1.5KE170CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170CA-E3/51 requirements.
6.How does Aetrix verify that 1.5KE170CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE170CA-E3/51 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 1.5KE170CA-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE170CA-E3/51?
All 1.5KE170CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170CA-E3/51, 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 1.5KE170CA-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE170CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE170CA-E3/51 Tags
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