My Inquiry
My Account
Taiwan Semiconductor Corporation 1.5SMC110A
- Part No.:
- 1.5SMC110A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC110A.pdf
- Description:
- 1500W, 110V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,572
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC110A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 110 V breakdown voltage (105–116 V), 94.0 V working stand-off voltage, 1500 W peak pulse power rating at 1 ms, and clamps transients to ≤152 V at 10.3 A peak impulse current. It is used in telecom power supplies and industrial I/O interfaces requiring robust ESD and lightning surge immunity.
For engineers reviewing the 1.5SMC110A datasheet, 1.5SMC110A pinout, 1.5SMC110A application, or 1.5SMC110A equivalent, key selection criteria include clamping voltage margin relative to protected IC VMAX, leakage current at operating voltage, thermal resistance (RθJA = 50 °C/W), and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive-grade transient immunity.
Technical Context
The 1.5SMC110A employs a glass-passivated silicon junction optimized for fast response (<1.0 ps) and low leakage (<1 µA @ 94.0 V). Its unidirectional configuration provides asymmetric clamping-low forward voltage (~3.5–5.0 V depending on voltage grade) during reverse-biased surge events, while blocking up to 94.0 V in normal operation.
Thermally, it uses a DO-214AB (SMC) package with RθJC = 15 °C/W and RθJA = 50 °C/W, enabling reliable 6.5 W steady-state dissipation at 25 °C ambient. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, supporting lead-free reflow assembly without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 105 V / 116 V - guaranteed breakdown range at 1 mA test current; defines minimum surge threshold before clamping activation |
| VWM | 94.0 V - maximum continuous DC or RMS voltage the device blocks without significant leakage; sets upper limit for protected circuit operating voltage |
| VC @ IPPM | ≤152 V at 10.3 A - clamped voltage during 10/1000 µs surge; determines worst-case overvoltage seen by downstream components |
| PPK | 1500 W - peak pulse power handling per 1 ms waveform; enables protection against high-energy transients like ISO 7637-2 Pulse 5a |
| IR @ VWM | ≤1 µA - ultra-low reverse leakage at rated stand-off voltage; avoids loading sensitive analog or low-power circuits |
| TJ max | +150 °C - maximum junction temperature; supports operation in enclosed industrial enclosures with limited airflow |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 7.11 mm × 6.22 mm footprint and 2.3 mm height; compatible with automated pick-and-place |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band. Designed for PCB surface mounting with solderable terminations per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (non-banded end) | Input/Line side terminal | Connected to protected line (e.g., +12 V rail); conducts during forward surge events (e.g., reverse battery connection) |
| Cathode (banded end) | Clamp/Return terminal | Connected to ground or lower-potential reference; sinks surge current during reverse-biased overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| Fast response time <1.0 ps | Clamps ESD events (IEC 61000-4-2) before sensitive ICs experience latch-up or gate oxide damage |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transient immunity (Pulse 1, 2a, 2b, 3a, 3b) without external filtering |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU; suitable for green manufacturing and export-controlled applications |
| MSL Level 1 | Can be mounted directly after removal from sealed packaging-no baking required prior to reflow |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24 V digital input channels in programmable logic controllers from inductive kickback and field wiring surges. IC Role / Device Role / Timing Role: Primary shunt TVS placed between input terminal and chassis ground, clamping transients before they reach optocoupler or MCU GPIO. Use Value: Limits voltage to ≤152 V during 100 A/1 ms surge, preventing damage to 30 V-rated input protection networks and maintaining >100 kΩ input impedance at 24 V. |
Use Scenario: Safeguarding LIN bus transceivers and sensor supply lines in body electronics against battery reverse connection and load dump. IC Role / Device Role / Timing Role: Unidirectional TVS on 12 V supply rail upstream of LDO regulators, absorbing ISO 7637-2 Pulse 5a energy without crowbar action. Use Value: Withstands 1500 W peak pulses while adding <1 µA leakage-preserving sleep-mode current budget and avoiding false wake-ups. |
| Telecom Power Supply Input | Industrial Ethernet PHY Interface |
Use Scenario: Front-end overvoltage protection for AC/DC adapters and PoE injectors exposed to lightning-induced surges on AC mains or DC distribution lines. IC Role / Device Role / Timing Role: First-stage TVS on secondary-side 48 V output, coordinated with MOVs and fuses to meet UL 60950-1 and IEC 61000-4-5 Level 4 requirements. Use Value: Clamps 10/1000 µs surges to 152 V, allowing downstream DC-DC converters with 60 V input rating to survive 4 kV line-to-ground transients. |
Use Scenario: Protecting RJ45 magnetics and Ethernet PHY pins from ESD and cable discharge events in factory automation gateways. IC Role / Device Role / Timing Role: Discrete TVS on each differential pair (TX+/TX−, RX+/RX−), placed adjacent to connector to minimize trace inductance. Use Value: Sub-nanosecond response ensures clamping occurs before 8 kV contact ESD (IEC 61000-4-2) propagates into 100BASE-TX transceiver inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110A (Bourns) | Same DO-214AA (SMB) package; 110 V VBR, but lower PPK = 600 W and higher VC = 177 V @ 3.4 A | Insufficient for ISO 7637-2 Pulse 5a; suitable only for lower-energy ESD and data-line protection | Select when board space is constrained and surge energy is limited to <600 W |
| SMCJ110A (Littelfuse) | Identical DO-214AB (SMC) package; same 110 V VBR range and 1500 W rating, but VC = 170 V @ 8.8 A (higher clamping) | Less margin for 120 V-rated downstream components; requires tighter layout to manage higher clamping overshoot | Choose if sourcing diversification is needed and system can tolerate 18 V higher clamping voltage |
Compared with SMBJ110A and SMCJ110A, the 1.5SMC110A delivers superior clamping performance (152 V vs. ≥170 V) at full 1500 W rating in the standard SMC footprint-enabling higher system-level surge immunity without redesigning PCB layout or derating protected ICs.
Availability
1.5SMC110A is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and telecom infrastructure requiring stable component supply across multi-year production cycles and extended lifecycle management.
Supply support for 1.5SMC110A 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for industrial, automotive, and consumer markets.
The 1.5SMCxx(A) series was developed to deliver high-power, surface-mount TVS protection with tight VBR tolerance and low clamping voltage for next-generation power supply and interface protection in harsh electromagnetic environments.
FAQ
What is the maximum clamping voltage of the 1.5SMC110A under a 10/1000 µs surge?
The 1.5SMC110A clamps to a maximum of 152 V when subjected to its rated peak impulse current of 10.3 A under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees worst-case overvoltage seen by protected circuitry during surge events.
Is the 1.5SMC110A suitable for bidirectional transient protection?
No-the 1.5SMC110A is a unidirectional TVS diode intended for DC line protection where polarity is fixed. For bidirectional applications such as AC lines or differential data buses, the 1.5SMC110CA variant (with "CA" suffix) must be used, as it provides symmetrical clamping in both directions.
What is the leakage current specification for the 1.5SMC110A at its working stand-off voltage?
The 1.5SMC110A exhibits a maximum reverse leakage current of 1 µA when biased at its rated working stand-off voltage of 94.0 V. This ultra-low leakage ensures minimal power loss and avoids interference with high-impedance sensing or low-power standby circuits.
Does the 1.5SMC110A meet automotive transient immunity standards?
Yes-the 1.5SMC110A is explicitly validated to meet ISO 7637-2 requirements for Pulses 1, 2a, 2b, 3a, and 3b, making it suitable for use in automotive body electronics, infotainment power supplies, and gateway modules subject to battery and alternator transients.
What is the thermal resistance from junction to ambient for the 1.5SMC110A in standard FR-4 PCB layout?
The 1.5SMC110A has a typical junction-to-ambient thermal resistance (RθJA) of 50 °C/W when mounted on a standard FR-4 PCB with minimum copper pad area per JEDEC standards. This value assumes no additional thermal vias or heatsinking; actual performance improves with enhanced copper pour.
1.5SMC110A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC110A FAQ
1.How can I place an order for 1.5SMC110A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC110A 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 1.5SMC110A reliable?
The price and inventory of 1.5SMC110A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC110A is usually 5 days.
3.What payment methods are accepted for 1.5SMC110A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC110A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC110A?
1.5SMC110A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC110A 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 1.5SMC110A?
For technical support, including 1.5SMC110A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC110A requirements.
6.How does Aetrix verify that 1.5SMC110A is sourced from the original manufacturer or authorized distributors?
All 1.5SMC110A 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 1.5SMC110A meets industry standards.
7.What is the process for return or replacement of 1.5SMC110A?
All 1.5SMC110A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC110A, 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 1.5SMC110A part is unused and in its original packaging.
Return procedure for 1.5SMC110A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC110A 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…
