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Vishay General Semiconductor - Diodes Division 1.5KE170C-E3/54
- Part No.:
- 1.5KE170C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170C-E3/54.pdf
- Description:
- TVS DIODE 138VWM 244VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,200
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Product details
Overview
1.5KE170C-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage 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 from –55 °C to +175 °C junction temperature.
For engineers reviewing the 1.5KE170C-E3/54 datasheet, 1.5KE170C-E3/54 pinout, 1.5KE170C-E3/54 application, or 1.5KE170C-E3/54 equivalent, this device serves as a high-energy, fast-response (≈1 ns) clamping solution for automotive power rails, industrial sensor interfaces, and telecom line protection where precise voltage thresholding and AEC-Q101-compliant reliability are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction enables low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.45), while the 1.5KE package supports 200 A non-repetitive forward surge current (8.3 ms half-sine) and thermal resistance of 15.4 °C/W (junction-to-lead).
The device complies with UL 497B for protector classification and meets JESD201 Class 1A whisker testing (E3 suffix). It is rated for 1500 W peak pulse power under 10/1000 µs waveform at 0.01% duty cycle, with derating above 25 °C ambient per JEDEC-standard curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 162 V / 179 V - defines precise clamping onset window for reliable overvoltage detection without false triggering |
| VWM | 145 V - maximum continuous working voltage; ensures stable operation below breakdown during normal system operation |
| VC @ IPPM | 234 V at 6.4 A - actual clamped voltage during 1500 W transient; determines protected circuit's maximum stress level |
| PPPM | 1500 W - peak pulse power handling (10/1000 µs); supports high-energy lightning and ESD transients per IEC 61000-4-5 |
| IDRM | <1.0 µA at VWM - ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits |
| TJ range | –55 °C to +175 °C - wide operating temperature span enables use in under-hood automotive and industrial environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length; compatible with through-hole PCB assembly and manual repair |
Pinout & Package
1.5KE170C-E3/54 uses the standard DO-201AD (Case Style 1.5KE) axial-leaded package with no polarity marking - consistent with bidirectional TVS construction. Leads are matte tin-plated, solderable per J-STD-002 and JESD22-B102, and rated for solder dip at 275 °C for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional terminal pair | Identical clamping behavior in both directions; installed without orientation concern on PCB |
| Lead 1 / Lead 2 | Current path interface | Leads conduct full transient current; thermal path optimized via 15.4 °C/W RθJL to heatsink-capable PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Supports Level 4 IEC 61000-4-5 surge immunity (4 kV line-to-ground) without degradation |
| Clamping ratio ≤1.45 | Minimizes overvoltage overshoot during fast transients, protecting downstream MOSFETs and ICs |
| AEC-Q101 qualified option available | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TC, HTRB) |
| UL 497B recognized (QVGQ2) | Meets safety agency requirements for telecom and industrial surge protection modules |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Primary clamping element placed directly across power input before DC-DC converter input stage. Use Value: Clamps 120 V transients to ≤234 V within <1 ns, preventing damage to 36 V-rated input capacitors and controller ICs. | Use Scenario: Shielding 4–20 mA current loop transmitters from induced surges on long field wiring in factory automation. IC Role / Device Role / Timing Role: Bidirectional shunt limiter on analog input/output terminals, coordinated with series current-limiting resistor. Use Value: Maintains signal fidelity with <1 µA leakage at 145 V, while absorbing >1500 W surges without latch-up or parametric shift. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side surge protection on POTS or DSL line cards exposed to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS bridging tip/ring lines to ground, referenced to UL 497B protector classification. Use Value: Meets UL 497B QVGQ2 recognition and withstands repetitive 10/1000 µs surges up to 6.4 A without parameter drift. | Use Scenario: Input-stage transient suppression in AC-DC adapters for smart home devices subjected to mains-borne surges. IC Role / Device Role / Timing Role: First-line defense before bridge rectifier, sized to handle 1500 W pulses without thermal runaway. Use Value: Enables compact design with DO-201AD footprint and eliminates need for parallel MOV+TVS stacks in cost-sensitive designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ170CA | DO-214AC (SMA) package; lower 400 W PPPM; VC = 277 V @ 4.3 A | Suitable for space-constrained PCBs but requires higher clamping margin; not AEC-Q101 qualified | Select when board area is critical and 1500 W rating is not required; verify layout thermal relief for SMA package |
| ON Semiconductor 1.5SMC170CA | SMB package; same 1500 W rating; VBR = 162–179 V; VC = 234 V @ 6.4 A; RoHS compliant | Surface-mount alternative with identical electrical specs but different thermal profile (RθJA = 110 °C/W vs. 75 °C/W for 1.5KE) | Choose for automated SMT assembly; confirm PCB copper area suffices for thermal dissipation in high-duty-cycle environments |
Compared with 1.5KE170C-E3/54, SMAJ170CA trades peak power and thermal robustness for smaller size, while 1.5SMC170CA matches electrical performance but shifts thermal management responsibility to PCB layout - making the axial 1.5KE variant preferable for high-reliability through-hole or thermally demanding applications.
Availability
1.5KE170C-E3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line surge suppression requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE170C-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for industrial, automotive, and computing markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing repeatable clamping accuracy, thermal resilience, and compliance with automotive and safety standards including AEC-Q101 and UL 497B.
FAQ
What is the exact breakdown voltage range for 1.5KE170C-E3/54?
The 1.5KE170C-E3/54 has a guaranteed breakdown voltage range of 162 V to 179 V at 1.0 mA test current, per Vishay Document 88301. This tight ±5% tolerance ensures predictable clamping onset and compatibility with 145 V maximum working voltage (VWM) systems. The value is measured under JEDEC-standard conditions and applies identically in both directions due to its bidirectional construction.
Is 1.5KE170C-E3/54 RoHS compliant and lead-free?
Yes, the "E3" suffix in 1.5KE170C-E3/54 explicitly denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads. It meets JESD201 Class 1A whisker testing and adheres to material restrictions defined in Vishay document 99912. No lead or other restricted substances exceed EU RoHS limits, and the molded epoxy body satisfies UL 94 V-0 flammability requirements.
Does 1.5KE170C-E3/54 have AEC-Q101 qualification?
The base 1.5KE170C-E3/54 is commercial grade and not AEC-Q101 qualified. However, Vishay offers the AEC-Q101-qualified variant as 1.5KE170CHE3_B (with "HE3" and revision code), documented in the same datasheet. For automotive applications requiring qualification, that specific part number must be specified - 1.5KE170C-E3/54 itself carries no AEC-Q101 certification.
What is the clamping voltage of 1.5KE170C-E3/54 at its rated peak pulse current?
At its rated peak pulse current of 6.4 A (derived from 1500 W / 234 V), the 1.5KE170C-E3/54 clamps to a maximum of 234 V, as specified in the Electrical Characteristics table of Vishay Document 88301. This value is measured under standardized 10/1000 µs waveform conditions and represents the upper limit of voltage seen by protected circuitry during worst-case transient events.
Can 1.5KE170C-E3/54 be used in bidirectional AC signal lines?
Yes, 1.5KE170C-E3/54 is explicitly designed for bidirectional applications, with identical VBR, VC, and leakage characteristics in both polarities. Its unmarked leads and symmetric IV curve make it ideal for AC-coupled signal paths, telecom line pairs, or any circuit where voltage transients may occur with either polarity - eliminating orientation concerns during placement and ensuring balanced protection.
1.5KE170C-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:
- -
- 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-E3/54 FAQ
1.How can I place an order for 1.5KE170C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170C-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 1.5KE170C-E3/54 reliable?
The price and inventory of 1.5KE170C-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 1.5KE170C-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE170C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE170C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE170C-E3/54?
1.5KE170C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE170C-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 1.5KE170C-E3/54?
For technical support, including 1.5KE170C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170C-E3/54 requirements.
6.How does Aetrix verify that 1.5KE170C-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE170C-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 1.5KE170C-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE170C-E3/54?
All 1.5KE170C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170C-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 1.5KE170C-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE170C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE170C-E3/54 Tags
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