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Littelfuse Inc. 1.5KE10CA-B
- Part No.:
- 1.5KE10CA-B
- Manufacturer:
- Littelfuse Inc.
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE10CA-B.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:2,031
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Product details
Overview
1.5KE10CA-B from Diodes Incorporated is a bidirectional 1500W transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power rails and signal lines. It features a 8.55V reverse standoff voltage (VRWM), 9.50V minimum breakdown voltage (VBR), 14.5V maximum clamping voltage (VC) at 103A peak pulse current, and operates across -55°C to +175°C. Used in automotive power supply inputs and industrial I/O interfaces to absorb ESD and lightning-induced surges.
For engineers reviewing the 1.5KE10CA-B datasheet, 1.5KE10CA-B pinout, 1.5KE10CA-B application, or 1.5KE10CA-B equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, unidirectional vs. bidirectional polarity requirements, DO-201 axial package fit in high-voltage clearance layouts, and RoHS-compliant lead-free termination compatibility with reflow and wave soldering processes.
Technical Context
This bidirectional TVS diode uses glass-passivated silicon junctions to achieve fast response time (<1.0 ps) and stable clamping under repetitive surge conditions. Its symmetrical avalanche structure enables equal clamping in both polarities, eliminating need for polarity-aware placement in AC-coupled or floating circuits.
The device complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) immunity standards when applied with appropriate series impedance. Thermal derating follows a linear 15 mW/°C slope above +25°C ambient, supported by its 5.0W steady-state power dissipation rating at TL = 75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W at 1.0 ms 10/1000 µs waveform - sustains single high-energy transients without failure |
| Reverse Standoff Voltage | 8.55 V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage | 9.50 V min @ 1.0 mA - guaranteed avalanche initiation threshold under test conditions |
| Clamping Voltage | 14.5 V max @ 103 A - limits downstream voltage during surge, defining protection window |
| Peak Pulse Current | 103 A - maximum non-repetitive surge current the device safely clamps |
| Operating Temperature | -55°C to +175°C - supports under-hood automotive and industrial environments |
| Leakage Current | 10 µA max @ 8.55 V - ensures minimal power loss and signal integrity in standby |
Pinout & Package
Package: DO-201 axial-leaded, transfer-molded epoxy housing (UL 94V-0 rated), 1.12 g mass, moisture sensitivity level 1 per J-STD-020. Leads are tin-finished, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional configuration | Connected to line or signal being protected; symmetric with cathode for AC operation |
| Cathode | Current exit point in forward bias; common terminal in bidirectional configuration | Connected to ground or reference rail; forms symmetrical clamp path with anode |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Enables stable, low-leakage avalanche performance across temperature and lifetime |
| Bidirectional clamping symmetry | Identical VRWM, VBR, and VC in both polarities - simplifies layout in floating or AC systems |
| RoHS-compliant lead-free finish | Tin-plated axial leads compatible with Pb-free reflow and wave soldering profiles |
| Halogen- and antimony-free "Green" material | Meets <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - satisfies environmental compliance mandates |
| Fast response time | Sub-nanosecond turn-on - clamps transients before sensitive downstream components react |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role: Primary overvoltage clamp placed between input rail and ground, upstream of DC-DC converter. Use Value: Limits transient voltage to ≤14.5 V, protecting 16 V-rated input stages of PMICs and microcontrollers. |
Use Scenario: 24 V digital input modules receiving signals from field sensors in factory automation. IC Role / Device Role: Interface-side surge suppression on dry-contact or PNP/NPN input channels. Use Value: Absorbs IEC 61000-4-4 EFT bursts (4 kV) without latch-up, preserving input logic state integrity. |
| Telecom Line Interface Protection | Medical Equipment Mains Surge Suppression |
Use Scenario: RS-485 transceivers connected to long outdoor cabling subject to induced lightning surges. IC Role / Device Role: Bidirectional rail-to-rail clamp on differential pair, referenced to local ground. Use Value: Maintains signal integrity by clamping common-mode transients while allowing ±12 V data swing. |
Use Scenario: Secondary-side DC bus in Class II medical power supplies subjected to EN 61000-4-5 surge testing. IC Role / Device Role: Final-stage overvoltage limiter after Y-capacitor and common-mode choke filtering. Use Value: Prevents capacitor overvoltage failure and downstream regulator damage during 2 kV line-earth surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CA | 600 W peak power, SMB surface-mount package, 11.1 V clamping at 53.5 A | Lower surge capacity; suited for PCB space-constrained designs with moderate threat levels | Select when board area is limited and IEC 61000-4-5 Level 3 (1 kV) suffices |
| 1.5SMC10CA | 1500 W peak power, SMC package, 11.1 V clamping at 103 A, same electrical specs but different footprint | Surface-mount alternative requiring re-layout; identical protection performance | Choose for automated assembly and higher thermal coupling to copper pour |
Compared with 1.5KE10CA-B, SMBJ10CA offers smaller size but reduced surge handling, while 1.5SMC10CA delivers identical protection in an SMD format-enabling trade-offs between through-hole reliability and production scalability.
Availability
1.5KE10CA-B is available at Aetrix Electronics and suitable for automotive power inputs, industrial PLC I/O modules, telecom line interfaces, and medical equipment secondary-side surge suppression requiring stable component supply and long-term obsolescence management.
Supply support for 1.5KE10CA-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers in Asia, Europe, and the U.S., and manufacturing in ISO/TS 16949-certified facilities.
This part belongs to Diodes' 1.5KE series of high-power axial TVS diodes, engineered specifically for robust overvoltage protection in harsh-environment applications where reliability under repeated surge stress is critical.
FAQ
What does the "-B" suffix indicate in 1.5KE10CA-B?
The "-B" suffix denotes bulk packaging: 1,000 units per bulk container. This contrasts with "-T", which indicates 1,000 units on 13-inch tape-and-reel. The "C" in "10CA" confirms bidirectional functionality, and "A" indicates standard tolerance grade per Diodes' ordering nomenclature.
Is 1.5KE10CA-B suitable for automotive AEC-Q200 qualification?
No-1.5KE10CA-B is not AEC-Q200 qualified. While Diodes offers AEC-Q200 versions in the same 1.5KE family (e.g., 1.5KE10CAQ-B), this specific part number lacks automotive qualification documentation, PPAP capability, and IATF 16949-controlled manufacturing traceability required for automotive use.
How does the bidirectional version differ electrically from the unidirectional 1.5KE10A-B?
The 1.5KE10CA-B has identical VRWM (8.55 V), VBR (9.50 V min), and VC (14.5 V) in both directions, whereas the unidirectional 1.5KE10A-B only clamps in reverse bias and conducts freely in forward bias. Bidirectional operation eliminates polarity marking requirements and supports AC or floating signal lines.
Can 1.5KE10CA-B be used in parallel for higher surge current handling?
No-parallel connection is not recommended due to mismatch in VBR and dynamic impedance, causing uneven current sharing and potential thermal runaway. For higher surge ratings, select a single higher-power device (e.g., 3KP10CA) or implement staged protection with series impedance.
1.5KE10CA-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Littelfuse Inc.
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 104.8A
- 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
1.5KE10CA-B FAQ
1.How can I place an order for 1.5KE10CA-B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE10CA-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 1.5KE10CA-B reliable?
The price and inventory of 1.5KE10CA-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE10CA-B is usually 5 days.
3.What payment methods are accepted for 1.5KE10CA-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE10CA-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE10CA-B?
1.5KE10CA-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE10CA-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 1.5KE10CA-B?
For technical support, including 1.5KE10CA-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE10CA-B requirements.
6.How does Aetrix verify that 1.5KE10CA-B is sourced from the original manufacturer or authorized distributors?
All 1.5KE10CA-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 1.5KE10CA-B meets industry standards.
7.What is the process for return or replacement of 1.5KE10CA-B?
All 1.5KE10CA-B units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE10CA-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 1.5KE10CA-B part is unused and in its original packaging.
Return procedure for 1.5KE10CA-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE10CA-B Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
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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
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