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Diodes Incorporated 1.5KE7V5CA-B
- Part No.:
- 1.5KE7V5CA-B
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7V5CA-B.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:9,304
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Product details
Overview
1.5KE7V5CA-B from Diodes Incorporated is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for primary overvoltage protection at DC power inputs and signal lines. It features a 6.40V reverse standoff voltage, 7.13–7.88V breakdown range at 10mA test current, 11.3V max clamping voltage at 132A peak pulse current, and operates from –55°C to +175°C.
For engineers reviewing the 1.5KE7V5CA-B datasheet, 1.5KE7V5CA-B pinout, 1.5KE7V5CA-B application, or 1.5KE7V5CA-B equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse current handling under IEC 61000-4-5 surge waveforms, thermal derating above +25°C ambient, and bidirectional symmetry for AC-coupled or floating-line protection.
Technical Context
This TVS diode uses a glass-passivated silicon junction to achieve fast sub-nanosecond response to transients while maintaining low leakage (<500μA at 6.40V) and stable voltage temperature coefficient (+0.061%/°C). Its bidirectional construction enables symmetrical clamping on both polarities without external polarity orientation.
The device is rated for 1500W peak pulse power (1.0ms exponential decay waveform), supports 200A non-repetitive forward surge current, and delivers consistent clamping performance across its full operating temperature range (–55°C to +175°C), making it suitable for under-hood automotive and industrial power rail protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - Withstands IEC 61000-4-5 Combination Wave (1.2/50μs–8/20μs) surges up to 132A without failure |
| Reverse Standoff Voltage | 6.40V - Maximum continuous DC or RMS voltage before significant leakage; sets minimum system operating margin |
| Breakdown Voltage Range | 7.13–7.88V @ 10mA - Confirmed conduction onset window; ensures reliable turn-on before downstream IC damage thresholds |
| Max Clamping Voltage | 11.3V @ 132A - Upper voltage limit during worst-case surge; must stay below protected circuit absolute maximum rating |
| Operating Temperature | –55°C to +175°C - Validated performance across automotive under-hood and industrial extended-range environments |
| Leakage Current | ≤500μA @ 6.40V - Minimal standby power loss and signal integrity impact in always-on systems |
Pinout & Package
Package: DO-201 axial-leaded epoxy molded case (UL 94V-0), 25.4mm overall length, 8.5–9.53mm body diameter, 0.96–1.06mm lead diameter, 4.8–5.21mm lead spacing. Marking: "1.5KE7V5CA" only (no cathode band, confirming bidirectional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (negative polarity) | Conducts during negative excursions; symmetric with cathode for bidirectional clamping |
| Cathode | Transient current sink (positive polarity) | Conducts during positive excursions; identical electrical behavior to anode terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enables stable leakage and breakdown characteristics across temperature and long-term operation |
| Bidirectional clamping | Eliminates need for polarity-aware placement; protects AC lines, differential buses, and floating references |
| 1500W peak pulse rating | Meets Level 4 IEC 61000-4-5 (4kV line-to-earth) with margin for design tolerance and aging |
| RoHS-compliant & halogen-free | Complies with EU RoHS 3 (2015/863/EU) and automotive green material requirements |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12V battery-fed ECU power rail exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary shunt clamp limiting voltage to ≤11.3V during 100A+ surges. Use Value: Prevents damage to 16V-rated DC-DC converters and microcontrollers without requiring series impedance. |
Use Scenario: 24V digital input module receiving signals from field sensors in noisy factory environments. IC Role / Device Role / Timing Role: Fast-response overvoltage limiter on dry-contact or PNP-sourced inputs. Use Value: Maintains signal integrity by clamping induced surges before they reach optocoupler or MCU GPIO pins. |
| AC Adapter Output Protection | RS-485 Transceiver Bus Protection |
Use Scenario: Secondary-side output of wall-mounted 5V/9V/12V AC-DC adapters subject to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamp across VOUT–GND to absorb common-mode and differential transients. Use Value: Enables compliance with UL 62368-1 transient immunity requirements without adding bulk capacitance. |
Use Scenario: Termination point of RS-485 bus in building automation systems with long cable runs. IC Role / Device Role / Timing Role: Line-to-ground TVS on A/B differential pair to suppress EFT and surge coupling. Use Value: Preserves data integrity by limiting bus voltage excursion to <12V, within transceiver common-mode range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA | 600W rating, SMB package (surface-mount), 7.0V standoff, 12.6V clamping @ 48.2A | Limited to lower-energy surges; requires PCB real estate optimization for thermal relief | Select when board space is constrained and surge threat level is ≤IEC 61000-4-5 Level 3 |
| 1.5SMC7.0CA | 1500W rating, SMC package (surface-mount), 7.0V standoff, 11.2V clamping @ 134A | Same power rating but SMD footprint; no axial leads for through-hole assembly | Choose for automated assembly and higher-density layouts where DO-201 lead form is incompatible |
Compared with 1.5KE7V5CA-B, SMBJ7.0CA offers smaller size but reduced surge capacity, while 1.5SMC7.0CA matches power and clamping performance in a surface-mount format-enabling trade-offs between manufacturability, thermal management, and mechanical robustness.
Availability
1.5KE7V5CA-B is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, AC adapter outputs, and RS-485 communication interfaces requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE7V5CA-B 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
This part belongs to the 1.5KE series of high-power axial-leaded TVS diodes, engineered specifically for ruggedized overvoltage protection in automotive, industrial, and power supply applications where reliability under extreme thermal and surge stress is critical.
FAQ
What is the difference between 1.5KE7V5A-B and 1.5KE7V5CA-B?
The "C" suffix denotes bidirectional functionality: 1.5KE7V5CA-B clamps symmetrically on both polarities, while 1.5KE7V5A-B is unidirectional with a cathode band marking. The "A" version has a 10.5V clamping voltage at 143A, whereas the "CA" version clamps at 11.3V at 132A-reflecting tighter voltage symmetry and slightly lower peak current capability due to dual-junction architecture.
Can 1.5KE7V5CA-B be used in place of a Zener diode for voltage regulation?
No-it is not designed for continuous regulation. This TVS diode conducts heavily only during transient overvoltage events and lacks the stable dynamic impedance and low-power thermal design required for steady-state voltage reference applications. Its 5.0W steady-state dissipation rating applies only at TL = 75°C with specified lead length; sustained DC bias will cause thermal runaway.
Is 1.5KE7V5CA-B qualified to AEC-Q101?
No-this specific part is not AEC-Q101 qualified. While Diodes Incorporated offers AEC-Q101-qualified TVS devices (e.g., in the DZ series), the 1.5KE family is intended for industrial and commercial applications. For automotive use, consult Diodes' AEC-Q101 portfolio or contact their automotive team for PPAP-capable alternatives.
How does temperature affect the clamping voltage of 1.5KE7V5CA-B?
Clamping voltage increases with junction temperature at +0.061%/°C. At +125°C, the 11.3V clamping value rises by ~5.7%, reaching ~11.94V. Designers must verify that this elevated clamping level remains within the protected circuit's absolute maximum voltage rating across the full operating temperature range.
1.5KE7V5CA-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 132A
- 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-201
1.5KE7V5CA-B FAQ
1.How can I place an order for 1.5KE7V5CA-B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7V5CA-B 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 1.5KE7V5CA-B reliable?
The price and inventory of 1.5KE7V5CA-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE7V5CA-B is usually 5 days.
3.What payment methods are accepted for 1.5KE7V5CA-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7V5CA-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7V5CA-B?
1.5KE7V5CA-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7V5CA-B 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 1.5KE7V5CA-B?
For technical support, including 1.5KE7V5CA-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7V5CA-B requirements.
6.How does Aetrix verify that 1.5KE7V5CA-B is sourced from the original manufacturer or authorized distributors?
All 1.5KE7V5CA-B 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 1.5KE7V5CA-B meets industry standards.
7.What is the process for return or replacement of 1.5KE7V5CA-B?
All 1.5KE7V5CA-B units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7V5CA-B, 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 1.5KE7V5CA-B part is unused and in its original packaging.
Return procedure for 1.5KE7V5CA-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE7V5CA-B Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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