My Inquiry
My Account
Taiwan Semiconductor Corporation 1.5KE110A
- Part No.:
- 1.5KE110A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE110A.pdf
- Description:
- TVS 1500W 110.5V 5% UNIDIR DO-20
- Quantity:
- Payment:
- Shipping:
Inventory:5,890
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE110A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 110V, clamping voltage of 152V at 10.3A peak pulse current, and DO-201 axial package. It delivers fast response (<1.0ps), low dynamic impedance, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and EFT immunity in power rail protection.
For engineers reviewing the 1.5KE110A datasheet, 1.5KE110A pinout, 1.5KE110A application, or 1.5KE110A equivalent, this page provides verified electrical parameters, DO-201 terminal polarity mapping, AEC-Q101 qualification status, clamping performance under 10/1000μs surge, and direct alternatives for 110V stand-off voltage TVS selection.
Technical Context
The 1.5KE110A operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 105–116V breakdown range (tested at 1mA). Its 152V clamping voltage at 10.3A ensures robust overvoltage protection for 12V/24V automotive and industrial DC rails. Junction temperature rating extends to +175°C, supporting under-hood deployment.
It features pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and passes JESD201 Class 2 whisker testing. Polarity is marked by cathode band; no bidirectional functionality - distinct from CA-suffixed variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min / max | 105V / 116V @ 1mA - defines precise avalanche initiation threshold for reliable triggering above system operating voltage |
| VWM | 94.0V - maximum continuous reverse working voltage; sets safe margin below breakdown for stable DC rail operation |
| VC @ IPP | 152V @ 10.3A - clamping voltage during 10/1000μs surge; determines peak stress on downstream ICs and MOSFETs |
| PPK | 1500W - peak pulse power handling capability; enables survival of high-energy transients like ISO 7637-2 Pulse 5a |
| IPP | 10.3A - maximum non-repetitive peak impulse current; used to size series impedance and verify PCB trace survivability |
| TJ max | +175°C - maximum junction temperature; supports placement near heat sources in engine control units and power converters |
| Leakage @ VWM | <1μA - ultra-low blocking leakage ensures minimal standby power loss in battery-backed systems |
Pinout & Package
Package: DO-201 axial leaded package with cathode band marking; body length 5.2–5.7mm, diameter 2.7–3.2mm, lead spacing 10.16mm (0.4"), RoHS-compliant pure tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward conduction path / low-side reference | Connected to ground or low-voltage return; carries full surge current during clamping |
| Cathode (banded end) | Reverse-biased avalanche node | Connected to protected line (e.g., 24V rail); initiates clamping when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock per JESD47 |
| 10/1000μs surge rating | 1500W peak power handling per JEDEC standard - directly applicable to ISO 7637-2 Pulse 5a (load dump) |
| Clamping ratio (VC/VBR) | 1.45 (152V/105V) - low ratio minimizes overvoltage overshoot during fast transients |
| Response time | <1.0ps - enables protection of high-speed interfaces and microcontrollers against ESD and EFT events |
| UL 94V-0 molding | Flame-retardant encapsulation - required for under-hood and industrial enclosure compliance |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input Stage |
|---|---|
Use Scenario: Protecting 24V CAN bus power lines and ECUs against load dump transients up to 120V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24V rail and chassis ground to clamp surges before they reach LDOs and MCU power pins. Use Value: 152V clamping voltage limits stress on 36V-rated input capacitors and 40V-input regulators in engine control modules. |
Use Scenario: Safeguarding programmable logic controller (PLC) 24V DC inputs from inductive kickback and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side power entry, coordinated with upstream fuses and MOVs. Use Value: 10.3A peak current rating allows coordination with 10A fast-blow fuses for selective fault isolation without nuisance tripping. |
| LED Driver Output Protection | Telecom Power Feeding Interface |
Use Scenario: Shielding constant-current LED driver outputs from reverse-polarity connection and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-output, absorbing negative transients and forward overvoltage spikes. Use Value: 94.0V working voltage accommodates 72V string configurations while maintaining >10% margin to VBR. |
Use Scenario: Protecting PoE-powered device (PD) front-end rectifiers from Ethernet cable ESD and induced surges. IC Role / Device Role / Timing Role: Secondary clamping device after primary gas discharge tube, limiting residual voltage to PHY ICs. Use Value: 152V clamping ensures PHY ICs rated for 160V absolute maximum survive IEEE 802.3af/bt surge tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ110A | Same DO-214AC (SMA) package; 110V VBR (104.5–115.5V), 152V VC @ 9.9A, 400W PPK | Lower surge rating - suitable only for non-automotive, lower-energy transients (IEC 61000-4-5 Level 2) | Select when space-constrained layouts require surface-mount and energy demands are ≤400W |
| ON Semiconductor 1.5SMC110A | DO-214AB (SMC) package; 110V VBR (104.5–115.5V), 152V VC @ 9.9A, 1500W PPK, AEC-Q101 qualified | Same surge rating but larger SMC footprint; higher thermal mass improves sustained pulse handling | Select when board layout permits larger package and enhanced thermal performance is needed for repetitive surge environments |
Compared with 1.5KE110A, SMAJ110A offers smaller size but sacrifices 73% peak power capacity, while 1.5SMC110A matches 1500W performance and AEC-Q101 qualification in a thermally superior SMC package - both require PCB redesign due to differing footprints and mounting methods.
Availability
1.5KE110A is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC power input stages, LED driver output protection, and telecom PoE interface hardening requiring stable component supply across extended temperature and high-reliability environments.
Supply support for 1.5KE110A 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs for automotive and industrial markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in automotive power systems and industrial DC distribution, emphasizing AEC-Q101 compliance, tight VBR tolerance, and robust DO-201 mechanical construction.
FAQ
What is the exact breakdown voltage range for 1.5KE110A?
The 1.5KE110A has a guaranteed breakdown voltage range of 105V to 116V at 1mA test current, per Taiwan Semiconductor's official datasheet revision O2104. This range reflects manufacturing tolerance and ensures reliable triggering above 94.0V working voltage while maintaining margin below system-level overvoltage thresholds. The 1.5KE110A's VBR is measured using square-wave pulses per ANSI/IEEE C62.35 standards.
Is 1.5KE110A bidirectional or unidirectional?
The 1.5KE110A is strictly unidirectional - it conducts only in reverse breakdown mode and must be installed with cathode toward the protected line. Bidirectional variants use "CA" suffixes (e.g., 1.5KE110CA); the "A" in 1.5KE110A denotes tighter VBR tolerance (±5%), not polarity. Polarity is marked by a visible cathode band on the DO-201 body.
Does 1.5KE110A meet AEC-Q101 requirements?
Yes - the 1.5KE110A is explicitly AEC-Q101 qualified per Taiwan Semiconductor's documentation. Qualification includes temperature cycling, highly accelerated stress testing (HAST), mechanical shock, and solderability validation. Note that AEC-Q101 compliance applies only to parts ordered with "H" suffix (e.g., 1.5KE110AH); standard 1.5KE110A is manufactured on the same qualified process but may lack full certification documentation unless specified.
What is the clamping voltage of 1.5KE110A at its rated surge current?
The 1.5KE110A clamps to a maximum of 152V at 10.3A peak pulse current under the standard 10/1000μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transients. Clamping voltage remains stable across ambient temperatures from −55°C to +175°C, with <0.11%/°C VBR temperature coefficient.
Can 1.5KE110A replace 1.5KE110 in existing designs?
Yes - the 1.5KE110A is a direct upgrade to 1.5KE110, featuring tighter breakdown voltage tolerance (±5% vs. ±10%) and identical DO-201 packaging, pinout, and surge ratings. Electrical characteristics including VWM (94.0V), VC (152V), and PPK (1500W) are unchanged. No PCB or schematic modifications are required when substituting 1.5KE110A for 1.5KE110 in legacy designs.
1.5KE110A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 94V
- Voltage - Breakdown (Min):
- 105V
- Voltage - Clamping (Max) @ Ipp:
- 152V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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
1.5KE110A FAQ
1.How can I place an order for 1.5KE110A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE110A 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 1.5KE110A reliable?
The price and inventory of 1.5KE110A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE110A is usually 5 days.
3.What payment methods are accepted for 1.5KE110A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE110A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE110A?
1.5KE110A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE110A 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 1.5KE110A?
For technical support, including 1.5KE110A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE110A requirements.
6.How does Aetrix verify that 1.5KE110A is sourced from the original manufacturer or authorized distributors?
All 1.5KE110A 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 1.5KE110A meets industry standards.
7.What is the process for return or replacement of 1.5KE110A?
All 1.5KE110A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE110A, 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 1.5KE110A part is unused and in its original packaging.
Return procedure for 1.5KE110A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE110A 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
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
