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Taiwan Semiconductor Corporation 1.5SMC12CH
- Part No.:
- 1.5SMC12CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC12CH.pdf
- Description:
- 1500W, 12V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,429
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Product details
Overview
1.5SMC12CH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 1500W peak pulse power, 12V breakdown voltage (min 10.8V, max 13.2V), and clamping voltage of 17.3V at 91A peak impulse current. It protects automotive and industrial power rails against ESD, lightning-induced surges, and load-switching transients.
For engineers reviewing the 1.5SMC12CH datasheet, 1.5SMC12CH pinout, 1.5SMC12CH application, or 1.5SMC12CH equivalent, key selection criteria include unidirectional/bidirectional configuration, clamping ratio (VC/VBR ≈ 1.52), junction-to-ambient thermal resistance (50°C/W), and AEC-Q101 qualification for automotive use.
Technical Context
The 1.5SMC12CH is a glass-passivated, single-die bidirectional TVS diode designed for fast transient suppression with sub-1ps response time. Its breakdown voltage is specified at 1mA test current, and it maintains <1μA leakage above 10V working stand-off voltage.
It meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transient immunity and operates across -55°C to +150°C junction temperature range. Thermal performance is defined by RθJA = 50°C/W and RθJC = 15°C/W, supporting high-reliability board-level surge protection without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.8V / 13.2V - Ensures reliable conduction onset within tight tolerance for precise overvoltage thresholding |
| VWM | 9.72V - Maximum continuous reverse operating voltage before significant leakage begins |
| VC@IPPM | 17.3V at 91A - Clamped voltage during 10/1000μs surge, limiting downstream stress to safe levels |
| PPK | 1500W - Peak pulse power handling per IEC 61000-4-5 Level 4 surge requirements |
| IR@VWM | <1μA - Ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| TJ Range | -55°C to +150°C - Supports under-hood automotive and industrial environments without derating |
| Package | DO-214AB (SMC) - Standardized SMT footprint compatible with automated placement and reflow |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking for polarity identification; bidirectional configuration means both terminals are symmetrical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve as bidirectional surge shunt nodes; no fixed anode/cathode assignment required |
| Cathode band (marking) | Polarity indicator | Visible band denotes terminal orientation for unidirectional variants; irrelevant for 1.5SMC12CH's bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| ISO 7637-2 compliance | Guarantees immunity to automotive electrical transients including load dump, jump start, and alternator ripple |
| Fast response time <1ps | Clamps ESD events before sensitive ICs experience damage-critical for USB, CAN, and sensor interfaces |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU directives for environmentally responsible manufacturing and end-of-life processing |
Applications
| Automotive Power Distribution | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs, lighting modules, and body control units from load-dump spikes and alternator transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamping device placed at input filter stage to shunt surge energy to ground before DC-DC regulators. Use Value: Enables compliance with ISO 16750-2 and prevents latch-up or gate oxide rupture in downstream MOSFET drivers and microcontrollers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation systems exposed to relay coil kickback and motor drive noise. IC Role / Device Role / Timing Role: Low-leakage transient suppressor across differential or single-ended signal lines upstream of instrumentation amplifiers. Use Value: Maintains sub-1μA leakage at 9.72V VWM, preserving signal accuracy while clamping 1500W surges to ≤17.3V. |
| Telecom Line Protection | Consumer USB Port ESD Protection |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from induced surges on outdoor cabling in telecom base stations and network switches. IC Role / Device Role / Timing Role: Primary surge arrestor on DC bias lines and data pair terminations, coordinated with secondary GDT or polymer TVS stages. Use Value: Withstands repeated 10/1000μs surges up to 91A while maintaining stable VBR drift <0.078%/°C across operating temperature. | Use Scenario: Hardening USB 2.0 data lines and VBUS against human-body-model (HBM) ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp placed adjacent to connector, minimizing trace inductance before protected ICs. Use Value: Sub-1ps response ensures clamping occurs before 15kV HBM pulses propagate into USB transceivers, meeting IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA | 600W rating, SMB package (smaller footprint), higher clamping voltage (23.2V @ 25.1A) | Limited to lower-energy surges; unsuitable for ISO 7637-2 Pulse 5a (load dump) | Select when board space is constrained and peak surge energy does not exceed 600W |
| 1.5KE12CA | Through-hole DO-201 package, same 1500W rating but slower response (~1ns), higher leakage (5μA) | Not suitable for high-density SMT designs or automotive AEC-Q101 requirements | Choose only for legacy through-hole assemblies where rework tolerance outweighs performance trade-offs |
Compared with SMBJ12CA and 1.5KE12CA, the 1.5SMC12CH delivers superior surge robustness in compact SMT form factor, AEC-Q101 validation, and ultra-low leakage-making it optimal for new automotive and industrial designs requiring high-reliability transient immunity.
Availability
1.5SMC12CH is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with full traceability and lifecycle management.
Supply support for 1.5SMC12CH 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 consumer markets.
The 1.5SMC series was developed specifically for high-power, surface-mount transient suppression in harsh environments-emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust thermal performance in DO-214AB packaging.
FAQ
What is the breakdown voltage tolerance for 1.5SMC12CH?
The 1.5SMC12CH has a guaranteed breakdown voltage range of 10.8V to 13.2V at 1mA test current, corresponding to ±10% around the nominal 12V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage design margins in safety-critical systems.
Is 1.5SMC12CH unidirectional or bidirectional?
The "CH" suffix in 1.5SMC12CH explicitly denotes a bidirectional configuration. Unlike "H"-suffixed unidirectional variants, the 1.5SMC12CH provides symmetrical clamping in both polarities-ideal for AC-coupled lines, differential buses, and applications where voltage polarity reversal is possible.
Does 1.5SMC12CH meet automotive qualification standards?
Yes, the 1.5SMC12CH is AEC-Q101 qualified and tested to ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity standards. Its construction-including glass passivation, J-STD-020 Level 1 moisture sensitivity, and -55°C to +150°C operating range-supports deployment in engine control units, ADAS modules, and other under-hood automotive systems.
What is the maximum clamping voltage of 1.5SMC12CH under surge conditions?
The 1.5SMC12CH clamps to a maximum of 17.3V at its rated peak impulse current of 91A (10/1000μs waveform). This clamping voltage is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transients.
Can 1.5SMC12CH be used in place of unidirectional 1.5SMC12H?
No-1.5SMC12CH and 1.5SMC12H are electrically distinct: the former is bidirectional with symmetrical characteristics, while the latter is unidirectional with cathode-defined polarity. Substituting one for the other without circuit review risks incorrect clamping behavior, especially in DC-biased applications where polarity matters.
1.5SMC12CH 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):
- 9.72V
- Voltage - Breakdown (Min):
- 10.8V
- Voltage - Clamping (Max) @ Ipp:
- 17.3V
- Current - Peak Pulse (10/1000µs):
- 91A
- 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)
1.5SMC12CH FAQ
1.How can I place an order for 1.5SMC12CH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC12CH 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 1.5SMC12CH reliable?
The price and inventory of 1.5SMC12CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC12CH is usually 5 days.
3.What payment methods are accepted for 1.5SMC12CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC12CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC12CH?
1.5SMC12CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC12CH 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 1.5SMC12CH?
For technical support, including 1.5SMC12CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC12CH requirements.
6.How does Aetrix verify that 1.5SMC12CH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC12CH 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 1.5SMC12CH meets industry standards.
7.What is the process for return or replacement of 1.5SMC12CH?
All 1.5SMC12CH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC12CH, 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 1.5SMC12CH part is unused and in its original packaging.
Return procedure for 1.5SMC12CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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