My Inquiry
My Account
Diodes Incorporated 1.5KE11A-T
- Part No.:
- 1.5KE11A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE11A-T.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:3,147
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE11A-T from Diodes Incorporated is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 9.4V reverse standoff voltage, 10.5V minimum breakdown voltage at 1mA, 15.6V maximum clamping voltage at 96A peak pulse current, and operates across -55°C to +175°C.
For engineers reviewing the 1.5KE11A-T datasheet, 1.5KE11A-T pinout, 1.5KE11A-T application, or 1.5KE11A-T equivalent, this part delivers verified clamping performance for automotive body electronics, industrial I/O protection, and telecom surge interfaces where fast response (<1ns), low leakage (<5μA @ 9.4V), and glass-passivated reliability are required.
Technical Context
This unidirectional TVS diode uses a silicon avalanche structure with glass-passivated junctions to achieve sub-nanosecond response time and stable breakdown characteristics. Its 1500W peak pulse power rating (tP = 1.0ms) supports IEC 61000-4-5 Level 4 surge immunity compliance when properly mounted with low-inductance layout.
The device exhibits a 0.075%/°C voltage temperature coefficient and maintains <5μA reverse leakage at VRWM, enabling robust protection in high-temperature environments such as engine control units and power supply front-ends without thermal runaway risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W at 1.0ms pulse - sustains IEC 61000-4-5 combination wave surges up to 4kV/2kA |
| Reverse Standoff Voltage | 9.4V - maximum continuous DC operating voltage before significant leakage begins |
| Breakdown Voltage | 10.5V min @ 1mA - precise avalanche initiation threshold for predictable clamping onset |
| Clamping Voltage | 15.6V max @ 96A - limits protected circuit voltage during surge, enabling 3.3V/5V rail safety margin |
| Peak Pulse Current | 96A @ 1.0ms - quantifies maximum surge energy absorption capability per event |
| Operating Temperature | -55°C to +175°C - validated for under-hood automotive and industrial power converter environments |
| Leakage Current | ≤5.0μA @ 9.4V - ensures minimal standby power loss and signal integrity in always-on circuits |
Pinout & Package
Package: DO-201 axial-leaded through-hole package with tin-finished leads, transfer-molded epoxy body (UL 94V-0), 1.12g weight, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during forward conduction | Connected to ground or lower-potential node; enables unidirectional clamping to reference |
| Cathode | Avalanche breakdown terminal | Marked with band; connected to protected line; conducts surge current to ground when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Ensures long-term stability of breakdown voltage and leakage under thermal cycling and humidity stress |
| 1500W peak pulse rating | Supports repeated surge events without degradation in automotive and industrial power systems |
| Fast response time | Sub-nanosecond turn-on protects sensitive ICs before transient energy couples into downstream circuitry |
| RoHS-compliant & halogen-free | Meets EU Directive 2015/863/EU with <900ppm Br, <900ppm Cl, <1000ppm Sb - suitable for green manufacturing |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller GPIOs from load dump and inductive switching transients in door modules and lighting controllers. IC Role / Device Role / Timing Role: Unidirectional TVS clamp referenced to chassis ground, placed adjacent to connector entry point. Use Value: Limits transient voltage to ≤15.6V, preventing latch-up or gate oxide damage in 5V-tolerant MCU pins while maintaining <5μA leakage at 12V nominal. |
Use Scenario: Safeguarding 24V digital input channels against field-wiring surges and ESD events in factory automation I/O terminals. IC Role / Device Role / Timing Role: Primary overvoltage suppression stage before optocoupler or Schmitt-trigger input conditioning. Use Value: Absorbs 96A peak pulses without failure, preserving signal integrity and enabling reliable detection of 24V logic states under harsh EMC conditions. |
| Telecom Power Feeding Interface | DC Power Supply Input Stage |
Use Scenario: Protecting PoE-powered device front-end circuitry from induced surges on Ethernet cables carrying 48V DC power. IC Role / Device Role / Timing Role: Line-to-ground clamping element on PSE-side power feed path, coordinated with common-mode chokes. Use Value: Clamps differential surges to ≤15.6V within 1ns, ensuring compliance with IEEE 802.3bt surge immunity requirements without affecting steady-state 48V operation. |
Use Scenario: Secondary-side overvoltage protection on 12V/24V DC-DC converter outputs feeding FPGAs and memory subsystems. IC Role / Device Role / Timing Role: Fast-acting shunt device parallel to output capacitor, triggered only during fault conditions. Use Value: Maintains <5μA leakage at 12V, avoiding regulation error, while limiting fault voltage to safe levels for downstream 3.3V logic components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | Lower 600W peak power; SMA package; 10V standoff; 17.0V clamping at 35.3A | Better suited for space-constrained PCBs but insufficient for 4kV IEC 61000-4-5 Level 4 | Select when board area is critical and surge threat level is limited to IEC Level 2–3 |
| 1.5KE11CA | Bidirectional variant; same 9.4V standoff; symmetric clamping (±15.6V); identical DO-201 package | Required for AC-coupled or bidirectional signal lines (e.g., RS-485, CAN bus) | Choose for differential or alternating polarity protection where unidirectional bias is not defined |
Compared with SMBJ10A and 1.5KE11CA, the 1.5KE11A-T provides higher surge capacity in axial-leaded form factor and optimized unidirectional clamping for grounded-rail DC systems, making it preferred for automotive and industrial power rail protection where mechanical robustness and 1500W rating are mandatory.
Availability
1.5KE11A-T is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and telecom power interface designs requiring stable component supply and full traceability.
Supply support for 1.5KE11A-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 automotive, industrial, and computing markets.
The 1.5KE series targets high-energy transient suppression in harsh environments, with design focus on automotive-grade thermal stability, AEC-Q200 alignment, and robust glass-passivated junctions for long-life surge resilience.
FAQ
What is the difference between 1.5KE11A-T and 1.5KE11CA?
The 1.5KE11A-T is unidirectional, with cathode marked and clamping only in reverse bias; the 1.5KE11CA is bidirectional, lacking polarity marking and clamping symmetrically for both polarities. Both share identical DO-201 package, 9.4V standoff, and 15.6V clamping voltage magnitude, but differ in circuit placement requirements and application scope.
Can 1.5KE11A-T be used in surface-mount designs?
No - the 1.5KE11A-T uses axial-leaded DO-201 package intended for through-hole mounting. Surface-mount alternatives include SMBJ10A (SMA) or SMCJ10A (SMC), which offer similar voltage ratings but lower peak power (600W and 1500W respectively) and different thermal derating profiles.
What is the maximum allowable lead temperature during soldering?
The device supports soldering per MIL-STD-202 Method 208, with maximum lead temperature of 260°C for 10 seconds. Exceeding this risks internal bond wire damage or epoxy delamination; preheating to 100–150°C and using controlled iron tip temperature is recommended for reliable assembly.
Is 1.5KE11A-T qualified to AEC-Q200?
While not explicitly AEC-Q200 certified per documentation, the 1.5KE11A-T is constructed in IATF 16949-certified facilities and meets automotive change control requirements. Diodes recommends contacting their automotive team for PPAP-capable variants like the AEC-Q200-qualified P6SMBJ10A for production-critical automotive applications.
1.5KE11A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 9A
- 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
1.5KE11A-T FAQ
1.How can I place an order for 1.5KE11A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11A-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 1.5KE11A-T reliable?
The price and inventory of 1.5KE11A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE11A-T is usually 5 days.
3.What payment methods are accepted for 1.5KE11A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11A-T?
1.5KE11A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11A-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 1.5KE11A-T?
For technical support, including 1.5KE11A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11A-T requirements.
6.How does Aetrix verify that 1.5KE11A-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE11A-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 1.5KE11A-T meets industry standards.
7.What is the process for return or replacement of 1.5KE11A-T?
All 1.5KE11A-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11A-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 1.5KE11A-T part is unused and in its original packaging.
Return procedure for 1.5KE11A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE11A-T Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
