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Taiwan Semiconductor Corporation 1.5SMC110H
- Part No.:
- 1.5SMC110H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC110H.pdf
- Description:
- 1500W, 110V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,878
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Product details
Overview
1.5SMC110H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It delivers 1500W peak pulse power handling, 99–121V breakdown voltage (VBR), 89.2V working stand-off voltage (VWM), and clamps transients to ≤158V at 9.9A peak impulse current - deployed in automotive infotainment power rails and industrial PLC I/O modules.
For engineers reviewing the 1.5SMC110H datasheet, 1.5SMC110H pinout, 1.5SMC110H application, or 1.5SMC110H equivalent, key selection criteria include its AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, DO-214AB (SMC) package thermal performance (RθJA = 50°C/W), and <1.0ps response time under ESD and lightning-induced surges.
Technical Context
The 1.5SMC110H operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast clamping of transient overvoltages exceeding VWM = 89.2V while maintaining leakage <1µA at rated stand-off. Its single-die DO-214AB construction supports automated SMT placement and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
Thermal design relies on RθJC = 15°C/W and RθJA = 50°C/W ratings, enabling sustained operation up to TJ = +150°C. Electrical behavior follows ANSI/IEEE C62.35 standards, with clamping defined by the 10/1000µs waveform per Fig.5 and derating applied above 25°C ambient per Fig.2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 99 V / 121 V - defines minimum and maximum voltage at which avalanche conduction begins under 1mA test current; ensures consistent turn-on across production lots |
| VWM | 89.2 V - maximum continuous reverse operating voltage before significant leakage; sets safe DC bias margin for 100V nominal systems |
| VC@IPPM | 158 V - clamped voltage at 9.9A peak impulse current; determines worst-case overvoltage seen by protected downstream circuitry |
| PPK | 1500 W - peak pulse power dissipation capability for 1ms non-repetitive transients; validates robustness against ISO 7637-2 Pulse 5a/b surges |
| IPPM | 9.9 A - maximum peak impulse current supported under 10/1000µs waveform; used to size upstream fusing and PCB trace width |
| TJ max | +150 °C - maximum junction temperature rating; enables use in under-hood automotive environments without derating |
| Response time | <1.0 ps - intrinsic junction response speed; ensures suppression occurs before sensitive ICs experience overstress |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Case meets UL 94V-0 flammability rating; matte tin-plated leads comply with J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; must handle 200A surge during 8.3ms half-sine events |
| Cathode | Protected line connection / high-side clamp node | Connected to line being protected (e.g., 12V/24V rail); carries full clamping current during transient events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for front-end power protection in ADAS ECUs |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - required for 12V/24V vehicle networks |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal stress - critical for 15-year automotive service life |
| Fast response time <1.0ps | Enables suppression before ESD or lightning-induced edges propagate into system-level ICs - preserves signal integrity in CAN/LIN interfaces |
| Moisture sensitivity level 1 | Eliminates bake requirements prior to reflow; supports standard SMT assembly without process modification |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting 12V/24V supply inputs in body control modules against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp surges before reaching PMICs and microcontrollers. Use Value: Clamps 1500W transients to ≤158V, preventing latch-up or permanent damage to downstream 3.3V/5V logic powered from the same rail. |
Use Scenario: Safeguarding 24V digital input channels in programmable logic controllers exposed to field wiring inductive kickback. IC Role / Device Role / Timing Role: Standoff protector on dry-contact inputs, absorbing energy from relay coil de-energization and motor stop/start events. Use Value: Limits voltage excursion to 158V during 9.9A surges, ensuring input optocouplers and level-shifters remain within absolute maximum ratings. |
| Telecom DC Power Interface | Consumer Audio Power Supply |
Use Scenario: Front-end surge protection on -48V DC telecom power feeds entering base station equipment cabinets. IC Role / Device Role / Timing Role: Primary clamping device on bulk power input, coordinated with upstream GDTs and downstream ceramic capacitors. Use Value: Withstands repeated 1500W pulses while maintaining <1µA leakage at 89.2V, preserving efficiency in always-on network infrastructure. |
Use Scenario: Overvoltage suppression on 19V laptop adapter inputs in portable audio amplifiers and DACs. IC Role / Device Role / Timing Role: Secondary protection stage after fuse and common-mode choke, guarding against adapter fault conditions and ESD. Use Value: Fast <1.0ps response prevents overshoot from damaging low-voltage analog front-ends and USB-C PD controllers. |
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 | Lower PPK = 600W; VC = 177V @ 3.4A; DO-214AA (SMB) package with higher RθJA = 65°C/W | Not AEC-Q101 qualified; limited to consumer/industrial use where ISO 7637-2 compliance is not required | Select when cost sensitivity outweighs automotive qualification and 1500W surge headroom is unnecessary |
| 1.5KE110A | Through-hole TO-204AE (DO-41); PPK = 1500W but slower response (~1ns); VC = 177V @ 8.5A | Not suitable for automated SMT lines; incompatible with high-density PCB layouts requiring surface-mount components | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not needed |
Compared with SMBJ110A and 1.5KE110A, the 1.5SMC110H uniquely combines AEC-Q101 qualification, DO-214AB SMT compatibility, 1500W capability, and sub-158V clamping - making it the only option meeting full ISO 7637-2 requirements in space-constrained automotive and industrial power designs.
Availability
1.5SMC110H is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and telecom power interface designs requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for 1.5SMC110H 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 automotive, industrial, and computing markets.
The 1.5SMC series was engineered specifically for high-reliability surface-mount transient suppression in harsh environments - emphasizing AEC-Q101 compliance, ISO 7637-2 immunity, and robust thermal performance in DO-214AB packaging.
FAQ
What is the polarity configuration of the 1.5SMC110H?
The 1.5SMC110H is a unidirectional TVS diode with cathode band marking indicating the cathode terminal. It conducts only during reverse-biased overvoltage events and blocks forward current up to 3.5V - confirmed by VF = 3.5V specification in the datasheet for this voltage grade. This polarity enables precise placement on positive-rail protection paths.
Does the 1.5SMC110H meet automotive qualification standards?
Yes, the 1.5SMC110H is AEC-Q101 qualified and explicitly tested to ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms. Its qualification status is documented in the official Taiwan Semiconductor datasheet Version B2207, confirming suitability for front-end power protection in automotive ECUs and infotainment systems.
What is the maximum clamping voltage of the 1.5SMC110H under surge conditions?
The 1.5SMC110H has a maximum clamping voltage (VC) of 158 V at 9.9 A peak impulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can the 1.5SMC110H be used in bidirectional configurations?
No - the 1.5SMC110H is unidirectional only. For bidirectional operation, Taiwan Semiconductor specifies part numbers with "CH" or "CAH" suffixes (e.g., 1.5SMC110CH). Using the 1.5SMC110H in reverse-biased AC applications would result in forward conduction and failure; the datasheet explicitly restricts bipolar use to designated variants.
What is the thermal resistance profile of the 1.5SMC110H in its DO-214AB package?
The 1.5SMC110H exhibits RθJC = 15°C/W (junction-to-case) and RθJA = 50°C/W (junction-to-ambient) in the DO-214AB (SMC) package. These values are measured under standard JEDEC conditions and enable thermal design for continuous operation up to +150°C junction temperature when mounted on 1-in² 2-oz copper with two thermal vias.
1.5SMC110H 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):
- 89.2V
- Voltage - Breakdown (Min):
- 99V
- Voltage - Clamping (Max) @ Ipp:
- 158V
- Current - Peak Pulse (10/1000µs):
- 9.9A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC110H FAQ
1.How can I place an order for 1.5SMC110H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC110H 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 1.5SMC110H reliable?
The price and inventory of 1.5SMC110H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC110H is usually 5 days.
3.What payment methods are accepted for 1.5SMC110H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC110H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC110H?
1.5SMC110H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC110H 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 1.5SMC110H?
For technical support, including 1.5SMC110H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC110H requirements.
6.How does Aetrix verify that 1.5SMC110H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC110H 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 1.5SMC110H meets industry standards.
7.What is the process for return or replacement of 1.5SMC110H?
All 1.5SMC110H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC110H, 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 1.5SMC110H part is unused and in its original packaging.
Return procedure for 1.5SMC110H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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