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onsemi 1.5KE220CA
- Part No.:
- 1.5KE220CA
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE220CA.pdf
- Description:
- TVS DIODE 185VWM 328VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:23,246
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Product details
Overview
1.5KE220CA from ON Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics against ESD, lightning surges, and inductive switching transients. It features a 220 V working peak reverse voltage (VRWM), 328 V maximum clamping voltage at 4.6 A peak pulse current, 1500 W peak power dissipation at 1 ms, and sub-1 ns response time. It is commonly deployed in industrial power supplies and telecom line interfaces.
For engineers reviewing the 1.5KE220CA datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to system operating voltage, peak surge current capability under IEC 61000-4-5 waveforms, UL 497B certification for isolated loop protection, and axial-leaded mechanical compatibility with through-hole PCB layouts.
Technical Context
The 1.5KE220CA operates as a bidirectional Zener-based TVS, leveraging avalanche breakdown in both polarities to clamp transient overvoltages symmetrically. Its 209–231 V breakdown voltage range (VBR @ 1 mA) ensures reliable turn-on above nominal 220 V DC or peak AC rails while maintaining low leakage (<5 μA at VRWM = 185 V).
Thermal design relies on junction-to-lead thermal resistance of 20°C/W and a 230°C maximum soldering temperature tolerance at 3/8″ lead length. Derating curves confirm 1500 W peak power only applies at TL ≤ 25°C, dropping to 5.0 W steady-state at TL = 75°C - critical for sustained surge duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 185 V - maximum continuous reverse operating voltage before clamping begins; sets minimum system voltage margin |
| VBR (min/typ/max) | 209 / 220 / 231 V @ 1 mA - defines precise avalanche onset window for predictable clamping threshold |
| VC @ IPP | 328 V @ 4.6 A - maximum clamped voltage during 1 ms 8/20 μs surge; determines protected circuit's worst-case overvoltage |
| PPK | 1500 W @ 1 ms - peak surge energy handling capacity; validates compliance with IEC 61000-4-5 Level 4 |
| IR @ VRWM | <5 μA - negligible standby leakage; avoids loading high-impedance 220 V monitoring or bias networks |
| Response Time | <1 ns - enables suppression before fast transients (e.g., ESD) propagate into downstream ICs |
| ESD Rating | Class 3 (>16 kV HBM) - qualifies for direct human-contact interface protection without external series impedance |
Pinout & Package
1.5KE220CA uses an axial-leaded Surmetic plastic package (Case 41A), with cathode band marking indicating the terminal where avalanche conduction initiates in either polarity - no functional polarity distinction due to bidirectional symmetry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Transient current entry point in negative half-cycle | Connects to line or signal node requiring bidirectional overvoltage clamping; identical electrical role to cathode |
| Cathode (Lead 2, banded) | Transient current entry point in positive half-cycle | Marked terminal provides visual orientation but does not imply unidirectional function; both leads are interchangeable |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or floating differential signals without polarity concerns |
| UL 497B recognition (QVGV2) | Validates suitability for isolated telecom/data line protection per safety-critical infrastructure standards |
| Low zener impedance | Maintains tight clamping voltage across 1–10 A surge range, minimizing voltage overshoot during fast transients |
| Void-free molded plastic case | Ensures long-term moisture resistance and mechanical reliability in industrial environments with thermal cycling |
| 230°C solderability | Supports standard wave-solder processes without delamination or parameter shift |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: 220 V AC mains-fed switch-mode power supply input stage exposed to lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Parallel-connected TVS that clamps line-to-line and line-to-ground transients before they reach bridge rectifier and PFC controller. Use Value: Limits peak voltage to 328 V, preventing destructive overvoltage on 400 V-rated bulk capacitors and MOSFETs while surviving 1500 W surges per IEC 61000-4-5. |
Use Scenario: RS-485 or T1/E1 data line interface in outdoor base station equipment subject to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Bidirectional shunt protector placed across differential pair to clamp common-mode transients without disrupting DC bias or signal integrity. Use Value: Sub-1 ns response ensures clamping occurs before transients couple into receiver inputs, and UL 497B certification confirms safety compliance for telecom isolation barriers. |
| Medical Equipment Mains Isolation Barrier | Process Control Analog Signal Conditioning |
Use Scenario: Primary-side transient protection in medical-grade isolated AC/DC converter powering patient-connected subsystems. IC Role / Device Role / Timing Role: First-line defense on primary AC input, absorbing surge energy before it stresses reinforced insulation barrier or Y-capacitors. Use Value: UL 497B recognition verifies compliance with medical safety standards for protectors, and 185 V VRWM aligns with 230 V ±10% mains tolerance. |
Use Scenario: 4–20 mA current loop transmitter output stage interfacing with PLC analog input modules in factory automation. IC Role / Device Role / Timing Role: Bidirectional clamp across loop terminals to suppress ESD events from field wiring and inductive kickback from solenoid loads. Use Value: 5 μA max leakage avoids introducing error in microamp-level loop current measurement; 328 V clamping protects 36 V-rated op-amps and ADC front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220CA | Surface-mount SMB package; 200 W peak power (vs. 1500 W); 356 V clamping at 3.4 A | Lower surge rating suits PCB space-constrained consumer electronics, not industrial 1500 W requirements | Select when board area is limited and surge threat level is below IEC 61000-4-5 Level 2 |
| 1.5SMC220CA | Surface-mount SMC package; same 1500 W rating; 328 V clamping at 4.6 A; tighter VBR tolerance (±5% vs. ±5.5%) | Identical electrical performance but requires rework for SMT assembly and lacks UL 497B certification | Choose for automated SMT production where UL recognition is not mandated and axial leads are undesirable |
Compared with 1.5KE220CA, SMBJ220CA offers compact size but sacrifices 87% peak surge capacity, while 1.5SMC220CA matches power handling but omits UL 497B - making 1.5KE220CA the sole choice for certified, high-energy, through-hole transient protection.
Availability
1.5KE220CA is available at Aetrix Electronics and suitable for industrial power supplies, telecom line interfaces, medical AC/DC converters, and process control analog signal conditioning requiring stable component supply and full regulatory compliance.
Supply support for 1.5KE220CA 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
ON Semiconductor (now part of onsemi) is a global semiconductor supplier specializing in power management, analog, sensor, and discrete devices for automotive, industrial, and cloud power applications.
The 1.5KExxCA series was engineered specifically for high-reliability, high-energy transient suppression in harsh industrial and telecom environments - emphasizing robustness, safety certification, and axial-leaded serviceability.
FAQ
What is the clamping voltage of the 1.5KE220CA under maximum surge conditions?
The 1.5KE220CA has a maximum clamping voltage (VC) of 328 V when subjected to its rated peak pulse current of 4.6 A with a 1 ms exponential waveform. This value is measured per Figure 4 in the official datasheet and represents the upper limit of voltage seen by protected circuitry during worst-case transient events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is the 1.5KE220CA suitable for AC line protection at 230 VAC?
Yes, the 1.5KE220CA is explicitly designed for this use case: its 185 V working peak reverse voltage (VRWM) exceeds the 325 V peak of 230 VAC RMS, providing sufficient margin before clamping initiates. Its bidirectional structure handles both half-cycles symmetrically, and UL 497B recognition validates its safety in isolated AC line applications - making 1.5KE220CA a standard choice for 230 V mains input protection.
Does the cathode band on the 1.5KE220CA indicate polarity-sensitive operation?
No - the cathode band on the 1.5KE220CA is a manufacturing marker only and does not denote functional polarity. As a bidirectional TVS, the 1.5KE220CA clamps identically in both directions; both leads serve as symmetrical avalanche terminals. The band aids visual orientation during manual assembly but imposes no circuit connection constraints - either lead may connect to line or ground in a clamping configuration.
How does the 1.5KE220CA compare to unidirectional TVS diodes like 1.5KE220A?
The 1.5KE220CA differs fundamentally from unidirectional variants (e.g., 1.5KE220A) by providing symmetrical clamping for AC or floating signals, whereas 1.5KE220A only clamps positive transients and conducts continuously on negative half-cycles. For 220 V AC applications or differential data lines, 1.5KE220CA eliminates the need for back-to-back diode configurations - simplifying layout and ensuring balanced protection without DC bias complications.
What is the maximum allowable lead temperature during soldering of the 1.5KE220CA?
The 1.5KE220CA supports a maximum lead temperature of 230°C at a distance of 1/16″ from the case for up to 10 seconds - fully compatible with standard wave soldering profiles. This specification ensures no degradation of electrical parameters or package integrity during assembly, and is validated per the manufacturer's mechanical characteristics table in the official 1.5KE6.8CA Series datasheet.
1.5KE220CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 185V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 4.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -50°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE220CA FAQ
1.How can I place an order for 1.5KE220CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE220CA 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 1.5KE220CA reliable?
The price and inventory of 1.5KE220CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE220CA is usually 5 days.
3.What payment methods are accepted for 1.5KE220CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE220CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE220CA?
1.5KE220CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE220CA 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 1.5KE220CA?
For technical support, including 1.5KE220CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE220CA requirements.
6.How does Aetrix verify that 1.5KE220CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE220CA 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 1.5KE220CA meets industry standards.
7.What is the process for return or replacement of 1.5KE220CA?
All 1.5KE220CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE220CA, 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 1.5KE220CA part is unused and in its original packaging.
Return procedure for 1.5KE220CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE220CA Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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