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Taiwan Semiconductor Corporation 1.5SMC150
- Part No.:
- 1.5SMC150
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150.pdf
- Description:
- 1500W, 150V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,267
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Product details
Overview
1.5SMC150 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 150 V working stand-off voltage (VWM), 135–165 V breakdown voltage (VBR) at 1 mA, 215 V maximum clamping voltage (VC) at 7.3 A peak pulse current, and 1500 W peak pulse power rating per 10/1000 µs waveform. It is used in industrial power supplies to protect downstream regulators and microcontrollers from load dump and ESD events.
For engineers reviewing the 1.5SMC150 datasheet, 1.5SMC150 pinout, 1.5SMC150 application, or 1.5SMC150 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 DO-214AB package compatibility with automated SMT assembly.
Technical Context
This TVS operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified VBR range. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at 121 V). The device responds in <1.0 ps to transients, enabling protection of fast-switching circuits such as PoE injectors and motor drive gate drivers.
It complies with ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b for automotive load-dump immunity and meets JESD201 Class 2 whisker resistance. With a junction temperature range of –55 °C to +150 °C and moisture sensitivity level 1, it supports reflow soldering without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 121 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for safe DC rail placement. |
| VBR min/max | 135 V / 165 V @ 1 mA - Confirmed breakdown threshold range; defines minimum overvoltage triggering point under standard test conditions. |
| VC @ IPPM | 215 V @ 7.3 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected circuitry. |
| PPK | 1500 W - Peak pulse power handling per single 10/1000 µs transient; enables robust protection against lightning-induced surges. |
| IR @ VWM | <1 µA - Reverse leakage at rated stand-off voltage; ensures negligible standby power loss in battery-powered systems. |
| RθJA | 50 °C/W - Junction-to-ambient thermal resistance; informs heatsinking requirements for repetitive surge duty cycles. |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 7.11 mm × 6.22 mm footprint and 2.34 mm height; compatible with IPC-7351B SMC-C1008X. |
Pinout & Package
Package: DO-214AB (SMC), molded plastic case with matte tin-plated leads, polarity indicated by cathode band. Weight: 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground during overvoltage event. |
| Anode | Reference / return path | Typically tied to system ground or low-impedance return plane; completes clamping path for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| Fast response time <1.0 ps | Enables suppression of nanosecond-scale ESD events before sensitive logic inputs are damaged. |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transient immunity (Pulse 1/2a/2b/3a/3b). |
| Moisture sensitivity level 1 | Permits direct placement onto PCB without baking; eliminates production delays and moisture-related popcorning. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant manufacturing. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power supply subjected to load dump and relay coil flyback. IC Role / Device Role: Primary overvoltage clamp placed between input rail and ground, upstream of DC-DC converter. Use Value: Limits transient voltage to ≤215 V, preventing damage to 36 V-rated input capacitors and enabling use of lower-voltage, cost-optimized regulator ICs. |
Use Scenario: CAN bus power line in vehicle body control unit exposed to ISO 7637-2 Pulse 5a (load dump up to 60 V). IC Role / Device Role: Unidirectional TVS on 12 V supply rail feeding CAN transceiver and microcontroller. Use Value: Clamps 12 V rail to 215 V during 120 V load dump event, preserving transceiver integrity and avoiding brownout resets. |
| Telecom PoE Injector Port | Factory Automation Sensor Interface |
|
Use Scenario: 48 V DC power feed line in IEEE 802.3af/at PoE injector subject to Ethernet cable ESD coupling. IC Role / Device Role: Secondary surge protector on PSE output side, complementing primary front-end MOV. Use Value: Provides low-leakage (<1 µA), fast-response clamping to protect PoE controller ICs without degrading quiescent current budget. |
Use Scenario: 24 V analog sensor input module in CNC machine control cabinet exposed to contact ESD per IEC 61000-4-2 Level 4. IC Role / Device Role: Input-stage TVS on sensor supply line, placed immediately after connector entry point. Use Value: Suppresses ±15 kV air discharge transients to sub-215 V clamping level, preventing latch-up in op-amp front-end and ADC reference circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | Same VWM (121 V), lower PPK (600 W), SMB package (smaller footprint, higher RθJA = 65 °C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a without derating. | Select when board space is constrained and surge energy does not exceed 600 W capability. |
| 1.5KE150A | Same electrical specs but axial leaded DO-201 package; no SMT compatibility; higher RθJA (75 °C/W) | Requires through-hole assembly; incompatible with high-volume automated SMT lines. | Select only for prototyping or legacy through-hole designs where rework flexibility is prioritized over production efficiency. |
Compared with 1.5SMC150, SMBJ150A offers smaller size but reduced surge capacity, while 1.5KE150A provides identical protection performance in non-SMT form-neither is pin-compatible, and both require layout revision for substitution.
Availability
1.5SMC150 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and telecom infrastructure requiring stable component supply with full traceability and lifecycle management.
Supply support for 1.5SMC150 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, with global distribution and AEC-Q200 qualified product lines.
The 1.5SMC series is engineered for high-reliability surface-mount transient suppression in harsh environments, targeting automotive, industrial, and telecom applications demanding ISO 7637-2 compliance and extended temperature operation.
FAQ
What is the clamping voltage of the 1.5SMC150 under a 10/1000 µs surge?
The 1.5SMC150 exhibits a maximum clamping voltage (VC) of 215 V when subjected to a 7.3 A peak pulse current with a 10/1000 µs waveform. This value is measured per IEC 61000-4-5 and ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The 1.5SMC150 maintains this clamping performance across its full operating temperature range.
Is the 1.5SMC150 unidirectional or bidirectional?
The 1.5SMC150 is a unidirectional TVS diode, intended for DC line protection where polarity is fixed. Its cathode band marks the terminal that connects to the protected line, and it conducts only during reverse overvoltage. For bidirectional AC or data-line protection, the 1.5SMC150A variant (with "A" suffix) must be selected instead, as explicitly defined in TSC's ordering documentation.
Does the 1.5SMC150 meet automotive transient immunity standards?
Yes, the 1.5SMC150 meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for automotive electronic modules. Its 1500 W peak pulse rating and controlled clamping behavior enable compliance with load-dump and switching transient immunity tests. However, it is not AEC-Q200 qualified out-of-box-system-level validation per vehicle manufacturer specifications remains required.
What is the maximum steady-state power dissipation for the 1.5SMC150?
The 1.5SMC150 has a steady-state power dissipation (PD) rating of 6.5 W at TA = 25 °C. This value applies only to continuous DC power dissipation-not transient events-and must be derated linearly above 25 °C using the specified thermal resistance (RθJA = 50 °C/W). In normal operation, leakage current remains below 1 µA, resulting in negligible steady-state heating.
Can the 1.5SMC150 be used in place of the 1.5SMC150A?
No, the 1.5SMC150 and 1.5SMC150A are not interchangeable without circuit review. The 1.5SMC150 is unidirectional with VBR = 135–165 V, while the 1.5SMC150A is also unidirectional but has tighter VBR tolerance (143–158 V) and lower clamping voltage (207 V). Substituting one for the other may compromise protection margin or cause premature conduction in low-tolerance designs.
1.5SMC150 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):
- 121V
- Voltage - Breakdown (Min):
- 135V
- Voltage - Clamping (Max) @ Ipp:
- 215V
- Current - Peak Pulse (10/1000µs):
- 7.3A
- 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)
1.5SMC150 FAQ
1.How can I place an order for 1.5SMC150 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150 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 1.5SMC150 reliable?
The price and inventory of 1.5SMC150 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC150 is usually 5 days.
3.What payment methods are accepted for 1.5SMC150?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150?
1.5SMC150 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150 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 1.5SMC150?
For technical support, including 1.5SMC150 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150 requirements.
6.How does Aetrix verify that 1.5SMC150 is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150 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 1.5SMC150 meets industry standards.
7.What is the process for return or replacement of 1.5SMC150?
All 1.5SMC150 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150, 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 1.5SMC150 part is unused and in its original packaging.
Return procedure for 1.5SMC150:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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