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Diodes Incorporated 1.5KE9V1CA-T
- Part No.:
- 1.5KE9V1CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE9V1CA-T.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:3,271
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Product details
Overview
1.5KE9V1CA-T 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 7.78V reverse standoff voltage, 8.65V minimum breakdown voltage at 1mA, 13.4V max clamping voltage at 112A peak pulse current, and operates from –55°C to +175°C.
For engineers reviewing the 1.5KE9V1CA-T datasheet, 1.5KE9V1CA-T pinout, 1.5KE9V1CA-T application, or 1.5KE9V1CA-T equivalent, this part serves as a high-energy, fast-response surge protector for automotive power rails, industrial I/O interfaces, and telecom line cards where bidirectional clamping and RoHS-compliant lead-free construction are required.
Technical Context
This bidirectional TVS diode uses glass-passivated silicon junctions to achieve sub-nanosecond response time and stable clamping under 8/20μs surge waveforms. Its symmetrical avalanche structure enables equal clamping in both polarities without external polarity biasing.
The device is rated for 1500W non-repetitive peak pulse power (tP = 1.0ms), with a temperature coefficient of 0.068%/°C for VBR, and supports steady-state dissipation up to 5.0W at 75°C lead temperature. It meets J-STD-020 Level 1 moisture sensitivity and UL 94V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W at tP = 1.0ms - sustains single high-energy surges per IEC 61000-4-5 Level 4 (4kV) |
| Reverse Standoff Voltage | 7.78V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage | 8.65V min @ 1mA - guaranteed avalanche initiation threshold for reliable clamping onset |
| Clamping Voltage | 13.4V max @ 112A - limits downstream circuit voltage during full-rated surge event |
| Operating Temperature | –55°C to +175°C - qualified for under-hood automotive and industrial ambient extremes |
| Leakage Current | 50μA max @ 7.78V - ensures minimal standby power loss in battery-critical systems |
| Package | DO-201 axial lead - industry-standard through-hole footprint compatible with legacy PCB layouts |
Pinout & Package
Package: DO-201 - transfer-molded epoxy case with axial leads, UL 94V-0 rated, 1.12g typical weight, tin-finished solderable leads per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward conduction | Connected to lower-potential side of protected node; forms symmetrical clamp path with Cathode |
| Cathode | Current entry point in reverse conduction | Connected to higher-potential side; bidirectional operation means either terminal may serve as reference |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enables stable, low-leakage avalanche performance across temperature and lifetime |
| Bidirectional clamping | Eliminates need for polarity-aware placement; protects AC-coupled or floating nodes |
| RoHS-compliant & halogen-free | Meets EU Directive 2015/863/EU with Br+Cl <1500ppm and Sb <1000ppm |
| Fast response time | <1.0ns - clamps before transient energy couples into sensitive downstream ICs |
| AEC-Q200 readiness support | Manufactured in IATF 16949-certified facilities; PPAP-capable upon request for automotive programs |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12V battery rail in engine control units exposed to load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Primary shunt clamping element placed upstream of DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤13.4V, preventing damage to 16V-rated input stages while surviving 1500W pulses. |
Use Scenario: 24V digital input channels on programmable logic controllers interfacing with field sensors and actuators. IC Role / Device Role / Timing Role: Bidirectional surge limiter on dry-contact or optocoupler-isolated inputs subject to EFT/burst noise. Use Value: Clamps both positive and negative transients without polarity constraints, enabling simplified board layout and reduced BOM count. |
| Telecom Line Card Surge Protection | Medical Equipment Mains Interface |
Use Scenario: TIP/RING interface on analog telephone line cards subjected to lightning-induced surges per GR-1089-CORE. IC Role / Device Role / Timing Role: First-stage protector before hybrid transformers and SLIC devices. Use Value: Withstands 112A 8/20μs surges while maintaining low capacitance (<100pF), preserving signal integrity. |
Use Scenario: Secondary-side DC power distribution in Class II medical devices with reinforced isolation barriers. IC Role / Device Role / Timing Role: Final-clamp TVS on isolated 5V/3.3V rails feeding safety-critical monitoring circuits. Use Value: Operates reliably at +175°C ambient, supporting compact thermal design in sealed enclosures without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA | Lower peak power (600W), smaller SMB package (surface-mount), 9.0V standoff, 14.4V clamping @ 41.7A | Preferred for space-constrained PCBs with moderate surge exposure (IEC 61000-4-5 Level 2) | Select when board area is limited and surge threat level is below 1500W; verify thermal relief for SMB footprint. |
| 1N6267A | Same DO-201 package, 9.1V standoff, but unidirectional only; 13.4V clamping @ 112A, identical power rating | Requires correct polarity orientation; unsuitable for AC or floating nodes | Choose only if system topology guarantees fixed polarity and cost sensitivity outweighs design flexibility. |
Compared with SMBJ9.0CA and 1N6267A, the 1.5KE9V1CA-T delivers higher surge robustness in a through-hole package with true bidirectional symmetry-making it optimal for legacy industrial designs, high-reliability automotive modules, and applications requiring polarity-agnostic protection without footprint redesign.
Availability
1.5KE9V1CA-T is available at Aetrix Electronics and suitable for automotive power input protection, industrial PLC digital I/O protection, and telecom line card surge protection requiring stable component supply and long-term obsolescence management.
Supply support for 1.5KE9V1CA-T 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, specializing in high-reliability protection, power management, and signal integrity solutions for industrial, automotive, and computing markets.
The 1.5KE series is part of Diodes' transient voltage suppressor portfolio, engineered for high-energy surge immunity in harsh environments-designed to meet AEC-Q200 stress test requirements and support PPAP documentation for automotive Tier 1 suppliers.
FAQ
What does the "CA" suffix indicate in 1.5KE9V1CA-T?
The "CA" suffix denotes a bidirectional configuration: the device provides symmetrical clamping for both positive- and negative-going transients. Unlike unidirectional variants (e.g., 1.5KE9V1A-T), it has no cathode band marking and functions identically regardless of voltage polarity across its terminals.
Can 1.5KE9V1CA-T replace 1.5KE9V1A-T in an existing design?
Yes, but only if the circuit is not polarity-sensitive and the layout accommodates bidirectional behavior. The 1.5KE9V1CA-T has identical electrical ratings (VRWM, VBR, VC, PPK) and DO-201 package as the unidirectional version, but lacks cathode identification-so it must not be used where forward conduction direction matters.
Is 1.5KE9V1CA-T compliant with AEC-Q200?
The part is manufactured in IATF 16949-certified facilities and supports PPAP documentation, but Diodes does not list it as formally AEC-Q200-qualified in DS21503 Rev. 12. For automotive qualification, contact Diodes directly to initiate AEC-Q200 testing and certification for this specific variant.
What is the maximum surge current 1.5KE9V1CA-T can handle repeatedly?
It is rated for non-repetitive 112A peak pulse current (8/20μs waveform) per event. Repetitive surges require derating based on duty cycle, ambient temperature, and thermal management; Diodes specifies no guaranteed repetitive rating-designers must ensure ≥1-minute intervals between full-power events to avoid thermal runaway.
1.5KE9V1CA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 112A
- 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
1.5KE9V1CA-T FAQ
1.How can I place an order for 1.5KE9V1CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE9V1CA-T 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 1.5KE9V1CA-T reliable?
The price and inventory of 1.5KE9V1CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE9V1CA-T is usually 5 days.
3.What payment methods are accepted for 1.5KE9V1CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE9V1CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE9V1CA-T?
1.5KE9V1CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE9V1CA-T 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 1.5KE9V1CA-T?
For technical support, including 1.5KE9V1CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE9V1CA-T requirements.
6.How does Aetrix verify that 1.5KE9V1CA-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE9V1CA-T 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 1.5KE9V1CA-T meets industry standards.
7.What is the process for return or replacement of 1.5KE9V1CA-T?
All 1.5KE9V1CA-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE9V1CA-T, 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 1.5KE9V1CA-T part is unused and in its original packaging.
Return procedure for 1.5KE9V1CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE9V1CA-T 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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