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Taiwan Semiconductor Corporation 1.5SMC150CAH
- Part No.:
- 1.5SMC150CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150CAH.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,041
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Product details
Overview
1.5SMC150CAH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 150V breakdown voltage (min 143V, max 158V), 128V working stand-off voltage, and 207V maximum clamping voltage at 7.6A peak impulse current. It protects automotive and industrial power rails against ISO 7637-2 pulses and ESD events.
For engineers reviewing the 1.5SMC150CAH datasheet, 1.5SMC150CAH pinout, 1.5SMC150CAH application, or 1.5SMC150CAH equivalent, this device serves as a high-power, AEC-Q101-qualified bidirectional TVS for DC bus surge immunity, battery line protection, and CAN/LIN interface transient suppression where fast response (<1.0 ps), low leakage (<1 µA @ 128V), and robust thermal performance (RθJC = 15°C/W) are critical.
Technical Context
The 1.5SMC150CAH employs a glass-passivated silicon junction optimized for bidirectional clamping across both polarities, meeting ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms. Its unidirectional counterpart (1.5SMC150CH) shares identical VBR, VWM, and VC specs but differs in polarity marking and forward conduction behavior.
Thermally, it delivers 6.5W steady-state dissipation at 25°C ambient and supports junction temperatures from –55°C to +150°C. With RθJA = 50°C/W and RθJC = 15°C/W, effective heatsinking via PCB copper is essential for sustained 1500W pulse handling under repeated transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 143 V / 158 V - Ensures reliable triggering above system nominal voltage while maintaining margin against false clamping |
| VWM | 128 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VC @ IPPM | 207 V at 7.6 A - Clamped voltage during 10/1000 µs surge, defining worst-case overvoltage seen by protected ICs |
| PPK | 1500 W - Peak pulse power rating per single 10/1000 µs waveform, derated linearly above 25°C ambient |
| IR @ VWM | <1 µA - Ultra-low leakage preserves battery life and avoids loading of high-impedance sensing circuits |
| TJ Range | –55°C to +150°C - Enables deployment in under-hood automotive, industrial motor drives, and outdoor power systems |
| Response Time | <1.0 ps - Sub-nanosecond turn-on ensures clamping before sensitive downstream components experience overstress |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with cathode band omitted (symmetrical terminals). Matte tin-plated leads, RoHS and halogen-free compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | No polarity marking required; either terminal accepts positive or negative transients equally |
| Case (cathode band absent) | Thermal and mechanical anchor | DO-214AB body provides primary heat transfer path to PCB copper; no internal case connection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD |
| Glass passivated junction | Enhances long-term reliability and stability of VBR under humidity and thermal cycling |
| ISO 7637-2 compliance | Guarantees immunity to load-dump, alternator-switching, and ignition transients in 12V/24V vehicle systems |
| Fast response time <1.0 ps | Clamps before ESD or lightning-induced edges propagate into signal chains or microcontrollers |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking, reducing manufacturing overhead and risk of popcorning |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 12V/24V battery rail in engine control units exposed to load dump (ISO 7637-2 Pulse 5a) and alternator switching noise. IC Role / Device Role / Timing Role: Bidirectional clamping element placed upstream of DC-DC converters and MCU power inputs. Use Value: Limits transient overshoot to ≤207V, preventing latch-up or gate oxide damage in 3.3V/5V logic supplies derived from the rail. | Use Scenario: Digital input module in programmable logic controller subjected to inductive kickback from solenoid valves and relay coils. IC Role / Device Role / Timing Role: Primary surge shunt on 24V field-side input traces before optocoupler isolation barrier. Use Value: Absorbs 1500W pulses without degradation, maintaining <1 µA leakage to ensure accurate 24V logic-level detection during quiescent operation. |
| CAN Bus Physical Layer | Renewable Energy Charge Controller |
Use Scenario: Transient protection on CAN_H/CAN_L lines in automotive body control modules interfacing with LIN subnets. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed differential across bus pair near connector entry point. Use Value: Clamps common-mode surges to ≤207V while preserving signal integrity due to symmetrical structure and absence of parasitic forward drop asymmetry. | Use Scenario: PV array input stage of solar charge controller exposed to lightning-induced surges on outdoor-rated cabling. IC Role / Device Role / Timing Role: First-line defense on MPPT input terminals before MOSFET switch and current-sense amplifier. Use Value: Handles repetitive 10/1000 µs surges up to 7.6A without parameter drift, validated per JESD201 Class 2 whisker resistance and UL 94V-0 molding compound. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | 600W rating, SMB package (smaller footprint, higher RθJA = 65°C/W), same VBR/VC range | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a load dump | Select when board space is constrained and peak surge energy remains below 600W |
| 1.5KE150CA | Through-hole DO-201 package, identical 1500W rating and electrical specs, slower manual assembly | Not suitable for automated SMT lines; requires wave solder or hand soldering | Select only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with 1.5SMC150CAH, SMBJ150CA trades surge capacity for compactness, while 1.5KE150CA retains full power rating but sacrifices SMT manufacturability-making 1.5SMC150CAH optimal for high-volume automotive and industrial SMT production requiring AEC-Q101 validation and DO-214AB thermal performance.
Availability
1.5SMC150CAH is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, CAN bus physical layer hardening, and renewable energy charge controller designs requiring stable component supply and AEC-Q101-compliant surge immunity.
Supply support for 1.5SMC150CAH 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, MOSFETs, and power management devices.
The 1.5SMC series was engineered specifically for high-reliability surface-mount surge protection in automotive and industrial environments, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust thermal design in the DO-214AB package.
FAQ
What does the 'CAH' suffix indicate in 1.5SMC150CAH?
The 'CAH' suffix in 1.5SMC150CAH denotes a bidirectional configuration with AEC-Q101 qualification and DO-214AB (SMC) packaging. The 'C' signifies bidirectional operation, 'A' indicates tightened VBR tolerance (±5% vs ±10% for 'H'), and 'H' confirms the SMC package. This distinguishes it from unidirectional 1.5SMC150CH and standard-tolerance 1.5SMC150H variants.
Does 1.5SMC150CAH meet ISO 7637-2 for automotive applications?
Yes, 1.5SMC150CAH is explicitly rated to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test waveforms per Taiwan Semiconductor's datasheet Version B2207. Its 1500W peak power rating, 207V clamping voltage, and sub-1ps response enable robust protection against conducted transients in 12V and 24V vehicle networks, satisfying AEC-Q101 stress requirements.
What is the maximum clamping voltage of 1.5SMC150CAH and at what current?
The maximum clamping voltage (VC) of 1.5SMC150CAH is 207 V, measured at the peak impulse current (IPPM) of 7.6 A under the standardized 10/1000 µs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events and is guaranteed across the full operating temperature range.
Can 1.5SMC150CAH be used in place of a unidirectional TVS like 1.5SMC150CH?
1.5SMC150CAH can replace 1.5SMC150CH only if bidirectional clamping is required and polarity-sensitive forward conduction is not needed. While both share identical VBR, VWM, and VC specs, the unidirectional 1.5SMC150CH conducts forward current below ~3.5V, whereas 1.5SMC150CAH exhibits symmetrical blocking in both directions-making it unsuitable for DC-biased applications requiring forward rectification.
What is the thermal resistance from junction to ambient (RθJA) for 1.5SMC150CAH?
The junction-to-ambient thermal resistance (RθJA) for 1.5SMC150CAH is 50°C/W under standard JEDEC test conditions (single device on 1-inch² copper pad). This value assumes minimal PCB copper; actual RθJA improves significantly with larger thermal pads or internal ground planes, directly impacting safe operating area during repetitive surge events.
1.5SMC150CAH 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 7.6A
- 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)
1.5SMC150CAH FAQ
1.How can I place an order for 1.5SMC150CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150CAH 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 1.5SMC150CAH reliable?
The price and inventory of 1.5SMC150CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC150CAH is usually 5 days.
3.What payment methods are accepted for 1.5SMC150CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150CAH?
1.5SMC150CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150CAH 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 1.5SMC150CAH?
For technical support, including 1.5SMC150CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150CAH requirements.
6.How does Aetrix verify that 1.5SMC150CAH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150CAH 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 1.5SMC150CAH meets industry standards.
7.What is the process for return or replacement of 1.5SMC150CAH?
All 1.5SMC150CAH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150CAH, 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 1.5SMC150CAH part is unused and in its original packaging.
Return procedure for 1.5SMC150CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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