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Vishay General Semiconductor - Diodes Division 1.5KE20CA-E3/54
- Part No.:
- 1.5KE20CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE20CA-E3/54.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,749
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Product details
Overview
1.5KE20CA-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 20 V breakdown voltage (VBR = 19.0–21.0 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 27.7 V at 54.2 A, and operates across –55 °C to +175 °C. It protects MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges.
For engineers reviewing the 1.5KE20CA-E3/54 datasheet, 1.5KE20CA-E3/54 pinout, 1.5KE20CA-E3/54 application, or 1.5KE20CA-E3/54 equivalent, this device is evaluated for fast-response (<1 ns), high-energy surge suppression in automotive power rails, industrial I/O protection, and telecom line interface circuits where bidirectional clamping and AEC-Q101-compliant variants are required.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for low incremental surge resistance and excellent clamping linearity under repetitive 10/1000 µs transients. Its bidirectional structure enables symmetrical clamping without polarity constraints, supporting AC-coupled lines and differential bus protection.
It delivers stable performance up to 175 °C junction temperature with thermal resistance RθJA = 75 °C/W and RθJL = 15.4 °C/W, and meets JESD 22-B106 solderability (275 °C, 10 s) and JESD 201 Class 1A whisker resistance (E3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.0 V / 21.0 V at 1.0 mA - defines precise clamping onset threshold for bidirectional surge events |
| VWM | 17.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 27.7 V at 54.2 A - actual clamped voltage during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs) - energy-handling capacity sufficient for IEC 61000-4-5 Level 4 surges |
| Junction Temp Range | –55 °C to +175 °C - supports under-hood automotive and industrial ambient environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with UL 94 V-0 molded epoxy body |
| Leakage @ VWM | 1.0 µA max - ensures minimal standby power loss in always-on circuits |
Pinout & Package
1.5KE20CA-E3/54 is housed in a DO-201AD (Case Style 1.5KE) axial-leaded package with no polarity marking - consistent with its bidirectional function. Leads are matte tin-plated and compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional terminal pair | No cathode band; either lead serves as input/output - enables placement flexibility on AC or floating lines |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling |
| 1500 W peak pulse power | Withstands 10/1000 µs surges up to 54.2 A without degradation - suitable for IEC 61000-4-5 compliance testing |
| Clamping response time | <1 ns - faster than MOVs or gas discharge tubes, preserving timing-critical signal integrity |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance and 275 °C solder dip (10 s) - qualified for automated assembly |
| UL 94 V-0 molding compound | Self-extinguishing epoxy housing prevents flame propagation in safety-critical enclosures |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across power input to limit voltage excursion to ≤27.7 V during 1500 W surges. Use Value: Prevents latch-up or gate oxide rupture in MCU power supplies and CAN transceivers without adding series impedance. |
Use Scenario: Shielding 4–20 mA current loop inputs from ESD and field wiring surges in PLC analog modules. IC Role / Device Role / Timing Role: Fast-clamping TVS connected between signal line and ground to divert transients before reaching op-amp input stages. Use Value: Maintains signal accuracy with <1 µA leakage at 17.1 V, avoiding offset drift in precision current sensing. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding RS-485 transceivers on outdoor Ethernet extenders exposed to induced lightning per ITU-T K.20. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pair (A/B) to clamp common-mode surges symmetrically. Use Value: Preserves data integrity with sub-nanosecond response and 27.7 V clamping, preventing receiver saturation or damage. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: Mounted across motor terminals to absorb 1500 W flyback energy during PWM commutation. Use Value: Eliminates contact arcing and extends relay/mosfet lifetime while meeting IEC 61000-4-4 EFT immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | Lower PPPM (600 W), smaller SMB package (surface-mount), VC = 32.4 V @ 18.5 A | Designed for PCB space-constrained designs; not rated for 1500 W surges | Select when board area is limited and surge energy does not exceed 600 W - requires layout redesign. |
| 1.5KE20A-E3/54 | Unidirectional variant; same VBR, VC, and PPPM, but marked cathode band and forward voltage spec (VF = 3.5 V @ 100 A) | Applicable only in DC-biased lines where polarity is fixed and forward conduction must be managed | Choose only if circuit topology enforces unidirectional voltage stress and reverse leakage must be minimized below 1 µA. |
Compared with SMBJ20CA and 1.5KE20A-E3/54, the 1.5KE20CA-E3/54 uniquely provides bidirectional 1500 W surge handling in an axial-leaded through-hole package - making it optimal for high-energy, polarity-agnostic protection where mechanical robustness and legacy through-hole assembly are required.
Availability
1.5KE20CA-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 temperature ranges and high-reliability manufacturing.
Supply support for 1.5KE20CA-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, rectifiers, and protection devices for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, targeting applications where failure due to voltage surges must be eliminated - including engine control units, factory automation I/O, and infrastructure communications equipment.
FAQ
What is the breakdown voltage tolerance for 1.5KE20CA-E3/54?
The 1.5KE20CA-E3/54 has a specified breakdown voltage range of 19.0 V to 21.0 V at 1.0 mA test current, representing a ±5 % tolerance around the nominal 20 V rating. This tight VBR window ensures predictable clamping behavior across production lots and temperature extremes, critical for consistent system-level surge margin design.
Is 1.5KE20CA-E3/54 RoHS compliant and lead-free?
Yes, the 1.5KE20CA-E3/54 carries the E3 suffix, indicating full RoHS compliance per Directive 2011/65/EU, with lead-free matte tin-plated leads and halogen-free molding compound. It also satisfies JESD 201 Class 1A whisker resistance testing, making it suitable for high-reliability automated assembly processes.
Can 1.5KE20CA-E3/54 be used in automotive applications?
While the base 1.5KE20CA-E3/54 is commercial-grade, Vishay offers AEC-Q101-qualified versions (e.g., 1.5KE20CAHE3_B) for automotive use. The 1.5KE20CA-E3/54 itself supports the full –55 °C to +175 °C operating range and meets key mechanical and solderability requirements, but formal AEC-Q101 qualification applies only to HE3-suffix variants.
What is the clamping voltage of 1.5KE20CA-E3/54 under maximum surge conditions?
At its rated peak pulse current of 54.2 A (corresponding to 1500 W with a 10/1000 µs waveform), the 1.5KE20CA-E3/54 clamps to a maximum of 27.7 V. This value is guaranteed across temperature and production lot, enabling accurate worst-case analysis of protected circuit voltage stress during surge events.
How does the bidirectional nature of 1.5KE20CA-E3/54 affect its PCB layout?
The 1.5KE20CA-E3/54 has no polarity marking and functions identically in both directions, eliminating orientation concerns during placement. This simplifies layout for AC-coupled lines, differential buses (e.g., RS-485), or floating grounds - unlike unidirectional variants such as 1.5KE20A-E3/54, which require strict cathode alignment.
1.5KE20CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 54.2A
- 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
1.5KE20CA-E3/54 FAQ
1.How can I place an order for 1.5KE20CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE20CA-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 1.5KE20CA-E3/54 reliable?
The price and inventory of 1.5KE20CA-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 1.5KE20CA-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE20CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE20CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE20CA-E3/54?
1.5KE20CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE20CA-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 1.5KE20CA-E3/54?
For technical support, including 1.5KE20CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE20CA-E3/54 requirements.
6.How does Aetrix verify that 1.5KE20CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE20CA-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 1.5KE20CA-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE20CA-E3/54?
All 1.5KE20CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE20CA-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 1.5KE20CA-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE20CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE20CA-E3/54 Tags
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