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Taiwan Semiconductor Corporation 1V5KE12CA
- Part No.:
- 1V5KE12CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE12CA.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,641
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Product details
Overview
1V5KE12CA from Taiwan Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-201 package, designed for high-energy surge clamping in power and signal lines. It features a 1500W peak pulse power rating at 1.0ms, 11.4–12.6V breakdown voltage (VBR), 10.2V reverse stand-off voltage (VRWM), 90.0A peak pulse current (IPPM), and 16.7V clamping voltage (VC) - used to protect industrial I/O, AC/DC power inputs, and telecom interfaces against ESD and lightning-induced transients.
For engineers reviewing the 1V5KE12CA datasheet, 1V5KE12CA pinout, 1V5KE12CA application, or 1V5KE12CA equivalent, key selection criteria include its bi-directional clamping symmetry, low incremental surge resistance, sub-1μA leakage above 10V, RoHS/halogen-free compliance, and DO-201 mechanical robustness for high-reliability board-level surge protection.
Technical Context
The 1V5KE12CA operates as a silicon avalanche diode with glass-passivated junction, enabling fast response time (<1 ns) and stable clamping under repetitive 10/1000μs surge waveforms. Its bi-directional structure provides symmetrical VBR and VC in both polarities, eliminating need for polarity-aware placement in AC-coupled or floating systems.
Rated for TJ = –55°C to +175°C, it supports high-temperature environments without derating up to 125°C ambient. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements, with pure tin-plated leads compliant to J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V - defines guaranteed avalanche conduction onset across production lot; ensures consistent clamping initiation in bidirectional surges. |
| VRWM | 10.2 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below breakdown. |
| VC @ IPPM | 16.7 V - clamped voltage at 90.0 A peak pulse; determines maximum stress imposed on downstream circuitry during surge. |
| PPPM | 1500 W - peak pulse power handling at 1.0 ms duration; enables protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges. |
| IR @ VRWM | <1 μA - ultra-low reverse leakage at rated stand-off voltage; prevents DC loading or bias shift in high-impedance circuits. |
| TJ max | +175 °C - maximum junction temperature; supports operation in enclosed industrial enclosures or near heat-generating components. |
| Package | DO-201 - axial-leaded, through-hole package with 0.090 g mass; compatible with standard wave-soldering and manual rework. |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002; polarity marked by single black band indicating cathode for unidirectional variants - but 1V5KE12CA is bi-directional, so the band serves only as mechanical orientation reference, not functional polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional avalanche terminals | No functional polarity; either lead may connect to line or return; identical VBR, VC, and IPPM in both directions. |
| Leads (both) | Current-carrying terminals | Support 200 A non-repetitive forward surge (IFSM); designed for low-inductance mounting with ≤3.75 mm lead length. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics over lifetime and temperature; resists moisture ingress and surface degradation. |
| 1500 W peak pulse power (1 ms) | Withstands IEC 61000-4-5 combination wave surges up to 4 kV open-circuit / 2 kA short-circuit without failure. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients; critical for protecting low-voltage logic and analog front-ends. |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance for industrial and telecom equipment; no brominated flame retardants or chlorine-based compounds. |
| Fast response time (<1 ns) | Clamps transients before they propagate into protected ICs; essential for ESD immunity per IEC 61000-4-2 Level 4 (15 kV air). |
Applications
| Industrial PLC I/O Protection | AC/DC Power Input Clamping |
|---|---|
Use Scenario: Protecting 24 VDC digital input modules from inductive kickback and field-wiring surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary surge shunt element placed between signal line and ground, clamping transients before reaching optocoupler or MCU GPIO. Use Value: Limits voltage to ≤16.7 V during 90 A surges, preventing latch-up or gate oxide damage in downstream protection ICs and microcontrollers. |
Use Scenario: Safeguarding bridge rectifier outputs and bulk capacitor inputs in industrial power supplies exposed to mains-borne surges. IC Role / Device Role / Timing Role: Bi-directional clamp across DC bus rails, absorbing energy from differential-mode switching transients and lightning-induced spikes. Use Value: Handles 1500 W pulses without thermal runaway, maintaining VRWM = 10.2 V to avoid leakage-induced efficiency loss during normal operation. |
| Telecom Line Interface Protection | Automotive Body Control Module (BCM) Inputs |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in outdoor base stations from induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: First-line transient suppressor mounted at connector entry point, paired with common-mode chokes and GDTs. Use Value: Symmetrical bi-directional clamping ensures equal protection on A/B differential lines without polarity sensitivity or layout constraints. |
Use Scenario: Protecting 12 V sensor inputs (e.g., door switch, seat occupancy) in automotive BCMs from load dump and ISO 7637-2 Pulse 1/2/5a events. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) TVS placed upstream of LDO regulators and signal conditioners to preserve quiescent current budget. Use Value: Withstands 175 °C junction temperature, enabling placement near engine-compartment-facing connectors without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA (Bourns) | Same DO-214AA package; lower PPPM = 600 W; VC = 19.9 V at 30.1 A; higher clamping ratio (VC/VBR ≈ 1.65 vs. 1.47). | Better suited for space-constrained PCBs where footprint matters more than surge energy; less robust for IEC 61000-4-5 Level 4. | Select SMBJ12CA only if board area is critical and surge threat level is ≤Level 3; verify clamping margin with downstream IC absolute max ratings. |
| 1N6273A (ON Semiconductor) | Same JEDEC 1N6273A designation; identical VBR, VRWM, VC, and PPPM; DO-201 package; same bi-directional construction and RoHS status. | Drop-in functional replacement with identical electrical and mechanical specs; qualified for automotive AEC-Q101 (1V5KE12CA is not). | Choose 1N6273A when AEC-Q101 qualification is mandatory; otherwise, 1V5KE12CA offers equivalent surge performance at lower cost for industrial use. |
Compared with SMBJ12CA, 1V5KE12CA delivers 2.5× higher surge energy handling and tighter clamping; versus 1N6273A, it shares identical core specs but lacks AEC-Q101 certification - making it ideal for cost-sensitive industrial designs where automotive qualification isn't required.
Availability
1V5KE12CA is available at Aetrix Electronics and suitable for industrial PLC I/O protection, AC/DC power input clamping, and telecom line interface protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1V5KE12CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with ISO 9001 and IATF 16949 certified facilities.
The 1V5KE series was developed for high-reliability board-level surge suppression in industrial, telecom, and power supply applications - emphasizing robustness, consistency, and compliance with global environmental standards.
FAQ
What does the "CA" suffix indicate in 1V5KE12CA?
The "CA" suffix in 1V5KE12CA denotes a bi-directional configuration, meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional variants (e.g., 1V5KE12A), the 1V5KE12CA has identical breakdown and clamping characteristics from anode-to-cathode and cathode-to-anode - confirmed by its VBR min/max (11.4–12.6 V) and VC (16.7 V) values applying in both directions. This eliminates polarity-dependent placement on PCBs.
Is 1V5KE12CA suitable for IEC 61000-4-5 surge testing?
Yes, 1V5KE12CA is rated for 1500 W peak pulse power at 1.0 ms, which exceeds the energy requirements of IEC 61000-4-5 Level 4 (4 kV open-circuit, 2 Ω source impedance, yielding ~1200 W). Its 90.0 A IPPM and 16.7 V VC ensure downstream circuitry remains within safe operating limits during standardized surge events - validated per JEDEC test conditions in the official TSC datasheet.
What is the maximum operating temperature for 1V5KE12CA?
The 1V5KE12CA has a maximum junction temperature (TJ) of +175 °C and operates across –55 °C to +175 °C. Its thermal derating curve shows full 1500 W pulse capability up to 125 °C ambient; above that, pulse power must be reduced linearly per the published derating curve. The DO-201 package's thermal resistance (RθJA) supports reliable operation in sealed industrial enclosures without forced airflow.
How does 1V5KE12CA compare to unidirectional 1V5KE12A in circuit design?
The 1V5KE12CA differs from unidirectional 1V5KE12A in polarity behavior: 1V5KE12CA clamps equally in both directions, while 1V5KE12A only clamps in reverse bias and conducts forward like a standard diode. In AC-coupled or floating systems (e.g., RS-485, transformer-isolated power), 1V5KE12CA avoids the need for dual-diode arrangements. Its DO-201 package and marking (cathode band) are identical, but the band has no functional polarity meaning for 1V5KE12CA.
Does 1V5KE12CA require heatsinking for continuous operation?
No, 1V5KE12CA is designed for transient-only duty and does not require heatsinking during normal operation. Its steady-state power dissipation is limited to 5 W at 75 °C ambient (per datasheet PD rating), and typical applications involve infrequent surges - not continuous power dissipation. However, in high-frequency surge environments (>1 Hz repetition), thermal accumulation must be evaluated using the published pulse derating curve and thermal resistance data.
1V5KE12CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AD, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 90A
- 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:
- DO-201AD
1V5KE12CA FAQ
1.How can I place an order for 1V5KE12CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE12CA 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 1V5KE12CA reliable?
The price and inventory of 1V5KE12CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE12CA is usually 5 days.
3.What payment methods are accepted for 1V5KE12CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE12CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE12CA?
1V5KE12CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE12CA 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 1V5KE12CA?
For technical support, including 1V5KE12CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE12CA requirements.
6.How does Aetrix verify that 1V5KE12CA is sourced from the original manufacturer or authorized distributors?
All 1V5KE12CA 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 1V5KE12CA meets industry standards.
7.What is the process for return or replacement of 1V5KE12CA?
All 1V5KE12CA units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE12CA, 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 1V5KE12CA part is unused and in its original packaging.
Return procedure for 1V5KE12CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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