My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE180CA-E3/51
- Part No.:
- 1.5KE180CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE180CA-E3/51.pdf
- Description:
- TVS DIODE 154VWM 246VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,709
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE180CA-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 180 V breakdown voltage (VBR = 171–189 V at IT = 1 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 246 V at 6.1 A, and operates from –55 °C to +175 °C - used in automotive power supply rail protection and industrial sensor interface circuits.
For engineers reviewing the 1.5KE180CA-E3/51 datasheet, 1.5KE180CA-E3/51 pinout, 1.5KE180CA-E3/51 application, or 1.5KE180CA-E3/51 equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, thermal derating curves, RoHS-compliant packaging, and direct alternatives for ESD/lightning transient suppression in DC power systems.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its bidirectional structure enables symmetrical clamping across both polarities without polarity marking, supporting AC-coupled or floating-line protection where unidirectional devices would require dual placement.
Rated for 1500 W peak pulse power with 10/1000 µs waveform and 0.01% duty cycle, it sustains repetitive surges when thermally managed per its RθJA = 75 °C/W and RθJL = 15.4 °C/W ratings. The device meets JEDEC standards and is UL 497B recognized (QVGQ2, E136766).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 171 V / 189 V at 1 mA - defines precise clamping onset threshold under standardized test conditions |
| VWM | 154 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 246 V at 6.1 A - actual clamped voltage during full 1500 W surge, critical for downstream IC survivability |
| PPPM | 1500 W - peak transient energy absorption capability with 10/1000 µs waveform, enabling lightning-level surge handling |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and industrial environments without derating loss |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with matte tin-plated leads, UL 94 V-0 molded epoxy body |
| RoHS & Qualification | E3 suffix - RoHS-compliant commercial grade; not AEC-Q101 qualified (1.5KE180CAHE3_B required for automotive) |
Pinout & Package
1.5KE180CA-E3/51 uses a two-terminal axial-leaded DO-201AD package (Case Style 1.5KE). No polarity marking is present due to bidirectional construction; both terminals are functionally identical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path | Both terminals conduct identically during positive or negative transients - no orientation required during placement |
| Leads (matte tin) | Thermal and electrical interface | Solderable per J-STD-002/JESD 22-B102; supports 275 °C solder dip (10 s max) and JESD 201 Class 1A whisker resistance |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling and humidity stress |
| 1500 W 10/1000 µs rating | Protects 12 V/24 V automotive ECUs and industrial PLC I/O against ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 Level 4 surges |
| Sub-nanosecond response time | Clamps transients before sensitive MOSFET gates or MCU pins experience overvoltage - no added propagation delay |
| UL 497B recognition (E136766) | Validates suitability for telecom and industrial communication line protection without additional system-level certification |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD, inductive switch-off), improving clamping precision |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (ISO 7637-2 Pulse 5a) on 12 V battery-fed control modules in engine compartments. IC Role / Device Role / Timing Role: Primary shunt clamp placed directly across input filter capacitor to divert >100 A surge currents away from DC-DC converters and microcontrollers. Use Value: Limits rail voltage to ≤246 V during 1500 W surge, preventing latch-up or gate oxide rupture in downstream 36 V-rated power management ICs. | Use Scenario: Protecting 4–20 mA current-loop transmitters connected to field-mounted pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Bidirectional TVS placed across loop terminals to absorb induced lightning surges (IEC 61000-4-5) on long cable runs. Use Value: Clamps ±246 V transients while maintaining <1 µA leakage at 154 V operating voltage - avoids loop-current error or DAC saturation. |
| Telecom Line Interface Protection | Consumer Power Adapter Input Stage |
Use Scenario: Safeguarding Ethernet PHY front-end circuitry in PoE-powered switches exposed to induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy and limiting let-through voltage to PHY ICs. Use Value: Delivers 246 V clamping at 6.1 A with <1 ns response - ensures PHY ESD immunity (IEC 61000-4-2 Level 4) remains intact post-GDT triggering. | Use Scenario: Input-stage surge suppression in universal-input AC-DC adapters (90–264 VAC) for smart home hubs and displays. IC Role / Device Role / Timing Role: Parallel-connected TVS across bridge rectifier output to clamp differential-mode surges before bulk capacitor and controller IC. Use Value: Withstands 1500 W pulses without degradation, enabling compliance with UL 62368-1 Annex D and EN 61000-4-5 Level 3 requirements. |
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 SMAJ180CA | Same 180 V VBR, 1500 W rating, but SMA package (surface-mount); lower IPPM (6.0 A vs. 6.1 A) and higher VC (252 V) | Requires PCB rework for SMT layout; unsuitable for through-hole legacy designs or high-thermal-mass heatsinking | Select when board space is constrained and automated assembly is prioritized over manual repairability. |
| ON Semiconductor 1.5SMC180CA | Identical VBR/VC/PPPM specs, same DO-201AD package, but rated for AEC-Q101 (HE3 variant); E3 version matches RoHS/commercial grade | Direct form-fit replacement with identical footprint and solder profile; validated for automotive under-hood use if HE3 variant selected | Choose for new automotive designs requiring AEC-Q101 qualification - otherwise electrically interchangeable with 1.5KE180CA-E3/51. |
Compared with 1.5KE180CA-E3/51, SMAJ180CA trades through-hole robustness for SMT density, while 1.5SMC180CA offers identical performance with optional automotive qualification - making it the preferred drop-in alternative when AEC-Q101 is required.
Availability
1.5KE180CA-E3/51 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface circuits, telecom line interfaces, and consumer power adapter input stages requiring stable component supply and long-term obsolescence management.
Supply support for 1.5KE180CA-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, rectifiers, and protection devices with emphasis on reliability, power handling, and industry-standard qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge immunity and wide temperature operation are mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE180CA-E3/51?
The 1.5KE180CA-E3/51 has a specified breakdown voltage range of 171 V to 189 V at 1 mA test current, representing a ±5% tolerance around the nominal 180 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports predictable system-level surge margin design without overspecifying downstream components.
Is 1.5KE180CA-E3/51 suitable for automotive under-hood applications?
1.5KE180CA-E3/51 is rated for operation from –55 °C to +175 °C and meets UL 497B recognition, but it is a commercial-grade part (E3 suffix) and not AEC-Q101 qualified. For automotive under-hood use, the HE3 variant (e.g., 1.5KE180CAHE3_B) must be selected - the 1.5KE180CA-E3/51 itself is appropriate for non-automotive industrial or telecom applications requiring the same electrical specs.
How does the bidirectional nature of 1.5KE180CA-E3/51 affect circuit layout?
The bidirectional construction of 1.5KE180CA-E3/51 eliminates polarity concerns during placement - both leads are functionally identical, and no cathode band marking is present. This simplifies PCB layout, reduces assembly errors, and enables use in AC-coupled or floating signal paths where voltage polarity reverses, such as telecom line interfaces or transformer-isolated power supplies.
What is the maximum clamping voltage of 1.5KE180CA-E3/51 during a 1500 W surge?
The maximum clamping voltage (VC) of 1.5KE180CA-E3/51 is 246 V at 6.1 A, measured under the standard 10/1000 µs waveform. This value represents the peak voltage imposed on protected circuitry during full-rated surge events and is critical for verifying that downstream components (e.g., 36 V-rated DC-DC controllers) remain within safe operating limits.
Can 1.5KE180CA-E3/51 be used in parallel to increase surge handling capacity?
While 1.5KE180CA-E3/51 can be placed in parallel to distribute surge current, mismatched VBR tolerances may cause uneven current sharing and premature failure of one device. Vishay recommends using a single higher-power TVS or adding small balancing resistors if paralleling is unavoidable - the datasheet does not endorse or characterize parallel operation for 1.5KE180CA-E3/51.
1.5KE180CA-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):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- 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
1.5KE180CA-E3/51 FAQ
1.How can I place an order for 1.5KE180CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE180CA-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 1.5KE180CA-E3/51 reliable?
The price and inventory of 1.5KE180CA-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 1.5KE180CA-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE180CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE180CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE180CA-E3/51?
1.5KE180CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE180CA-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 1.5KE180CA-E3/51?
For technical support, including 1.5KE180CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE180CA-E3/51 requirements.
6.How does Aetrix verify that 1.5KE180CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE180CA-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 1.5KE180CA-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE180CA-E3/51?
All 1.5KE180CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE180CA-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 1.5KE180CA-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE180CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE180CA-E3/51 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
