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Taiwan Semiconductor Corporation 1.5SMC16
- Part No.:
- 1.5SMC16
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC16.pdf
- Description:
- 1500W, 16V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,067
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Product details
Overview
1.5SMC16 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 14.4–17.6 V breakdown voltage (VBR), 12.9 V working stand-off voltage (VWM), 23.5 V maximum clamping voltage (VC) at 67 A peak pulse current, and 1500 W peak pulse power rating - optimized for ESD and lightning-induced surge immunity in telecom interfaces and industrial I/O circuits.
For engineers reviewing the 1.5SMC16 datasheet, 1.5SMC16 pinout, 1.5SMC16 application, or 1.5SMC16 equivalent, this device requires attention to unidirectional polarity marking, DO-214AB (SMC) package thermal derating above 25°C, clamping performance under 10/1000 µs waveform, and compatibility with JESD201 Class 2 whisker-resistant soldering processes.
Technical Context
The 1.5SMC16 operates as a silicon avalanche diode with glass-passivated junction, delivering sub-1 ps response time and <1 µA blocking leakage at VWM. Its single-die DO-214AB construction supports automated placement and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and inductive switching transients.
Thermal design relies on RθJA = 50°C/W and RθJC = 15°C/W, with junction temperature rated from –55°C to +150°C. The device is unidirectional only (no "C" or "CA" suffix), requiring correct cathode-band orientation during PCB layout to ensure proper clamping polarity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 14.4 V / 17.6 V - defines minimum and maximum voltage at which avalanche conduction begins under 1 mA test current; critical for margin against false triggering |
| VWM | 12.9 V - maximum continuous DC or RMS voltage the device blocks without significant leakage; sets upper limit for protected circuit operating voltage |
| VC @ IPPM | 23.5 V at 67 A - clamped voltage during 10/1000 µs surge; determines worst-case overvoltage seen by downstream ICs |
| PPK | 1500 W - peak pulse power handling per single non-repetitive event; defines surge energy absorption capability |
| IR @ VWM | <1 µA - ensures negligible standby current draw and minimal impact on high-impedance sensing or bias networks |
| TJ max | +150°C - maximum allowable junction temperature; constrains power dissipation and board-level thermal management |
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 and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Protected circuit return path | Connected to ground or low-side reference; must be low-inductance for effective clamping |
| Cathode | Protected line input | Connected to the line being protected (e.g., RS-485 A/B, DC supply rail); marked with band |
Key Features
| Feature | Design Value |
|---|---|
| Clamping voltage stability | VC = 23.5 V at 67 A ensures predictable overvoltage limiting for 3.3 V/5 V/12 V logic and interface ICs |
| Fast transient response | <1 ps response time enables suppression of ESD events before sensitive circuitry latches or fails |
| Automated assembly compatibility | DO-214AB footprint supports standard SMT pick-and-place and reflow profiles without lead damage |
| Environmental compliance | RoHS-compliant and halogen-free per IEC 61249-2-21 - suitable for consumer and industrial end-equipment certifications |
Applications
| Industrial PLC I/O Protection | Telecom Ethernet Port Surge Suppression |
|---|---|
Use Scenario: 24 V DC input channels on programmable logic controller (PLC) modules exposed to field-wiring transients and inductive kickback. IC Role / Device Role / Timing Role: Primary unidirectional TVS clamp placed between field terminal and internal regulator/sensor interface. Use Value: Limits induced surges to ≤23.5 V, protecting downstream 24 V tolerant receivers and isolators while maintaining >12.9 V functional margin during normal operation. | Use Scenario: RJ45 Ethernet ports in industrial switches subjected to lightning-induced common-mode surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Line-to-ground TVS on each differential pair (e.g., TX+/TX–, RX+/RX–) in conjunction with common-mode chokes. Use Value: Clamps 10/1000 µs surges to 23.5 V before PHY transceivers, preserving signal integrity and preventing latch-up in 10/100/1000BASE-T PHYs. |
| Automotive Body Control Module Power Rail | Consumer Appliance Motor Drive Input |
Use Scenario: 12 V battery-supplied microcontroller inputs in body control modules facing load-dump pulses (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS on VCC rail upstream of LDO regulators and MCU power pins. Use Value: Absorbs up to 1500 W peak energy without failure, holding rail voltage below 24 V during 100 ms load-dump events - within MCU absolute maximum ratings. | Use Scenario: AC-DC rectified DC bus (≈16–18 V) feeding H-bridge gate drivers in smart home appliance motor controllers. IC Role / Device Role / Timing Role: Clamp across DC bus to suppress flyback spikes from brushed DC motor commutation. Use Value: Limits voltage overshoot to 23.5 V, preventing gate oxide stress on MOSFET drivers and enabling use of 30 V-rated FETs 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 |
|---|---|---|---|
| SMBJ16A | Same DO-214AA (SMB) package; 1500 W rating; VBR = 17.8–19.7 V; VC = 26.0 V at 58 A | Higher clamping voltage and lower peak current capacity; smaller package footprint but higher thermal resistance | Select SMBJ16A only if board space is constrained and 26.0 V clamping is acceptable for protected ICs |
| 1.5KE16A | Through-hole DO-15 package; same VBR/VC specs; 1500 W rating; higher RθJA (~65°C/W) | Not surface-mountable; incompatible with automated assembly; requires wave-solder or hand-solder process | Choose 1.5KE16A only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ16A and 1.5KE16A, the 1.5SMC16 offers lower clamping voltage (23.5 V vs. 26.0 V/23.5 V), identical power rating, and DO-214AB's superior thermal performance (RθJA = 50°C/W), making it optimal for high-density, thermally demanding SMT applications.
Availability
1.5SMC16 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, telecom Ethernet port surge suppression, and automotive body control module power rail protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC16 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 1.5SMC series is engineered for high-energy transient suppression in surface-mount applications, emphasizing robust clamping, automated assembly readiness, and compliance with international surge immunity standards including ISO 7637-2.
FAQ
What is the polarity configuration of the 1.5SMC16?
The 1.5SMC16 is a unidirectional TVS diode, with cathode indicated by a band on the DO-214AB package. It conducts only when the cathode is at higher potential than the anode - essential for DC rail protection where reverse voltage is not expected. Bidirectional variants require "C" or "CA" suffixes (e.g., 1.5SMC16CA), which the 1.5SMC16 does not have.
Does the 1.5SMC16 meet ISO 7637-2 automotive surge requirements?
Yes, the 1.5SMC16 meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test criteria for transient immunity in automotive electronic modules. Its 1500 W peak power rating and 23.5 V clamping voltage enable reliable suppression of load-dump and inductive switching transients on 12 V systems - verified per manufacturer characterization in the S2207 datasheet revision.
What is the maximum steady-state power dissipation of the 1.5SMC16?
At TA = 25°C, the 1.5SMC16 has a steady-state power dissipation (PD) of 6.5 W. This value decreases linearly with ambient temperature above 25°C per the derating curve in Figure 2 of the datasheet, reaching zero at TA = 150°C. This rating applies only to continuous DC or low-frequency conditions - not to transient surge events.
Can the 1.5SMC16 be used in bidirectional signal line protection?
No - the 1.5SMC16 is strictly unidirectional and unsuitable for AC or bidirectional signal lines (e.g., USB D+/D–, RS-485) without external circuitry. For such applications, select the bidirectional variant 1.5SMC16CA, which provides symmetrical clamping in both directions and uses the same DO-214AB package but different internal die structure.
What is the junction-to-ambient thermal resistance (RθJA) of the 1.5SMC16?
The 1.5SMC16 has a typical junction-to-ambient thermal resistance (RθJA) of 50°C/W under standard JEDEC test conditions (single device on 1-inch² copper pad). This value assumes no additional heatsinking; actual board-level thermal performance depends on PCB copper area, layer count, and airflow - critical when operating near PPK limits in repetitive surge scenarios.
1.5SMC16 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):
- 12.9V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 23.5V
- Current - Peak Pulse (10/1000µs):
- 67A
- 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)
1.5SMC16 FAQ
1.How can I place an order for 1.5SMC16 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC16 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 1.5SMC16 reliable?
The price and inventory of 1.5SMC16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC16 is usually 5 days.
3.What payment methods are accepted for 1.5SMC16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC16?
1.5SMC16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC16 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 1.5SMC16?
For technical support, including 1.5SMC16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC16 requirements.
6.How does Aetrix verify that 1.5SMC16 is sourced from the original manufacturer or authorized distributors?
All 1.5SMC16 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 1.5SMC16 meets industry standards.
7.What is the process for return or replacement of 1.5SMC16?
All 1.5SMC16 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC16, 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 1.5SMC16 part is unused and in its original packaging.
Return procedure for 1.5SMC16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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