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Taiwan Semiconductor Corporation 1.5SMC47CAH
- Part No.:
- 1.5SMC47CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47CAH.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,820
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Product details
Overview
1.5SMC47CAH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 47V, clamping voltage of 64.8V at 24A peak pulse current, and DO-214AB (SMC) package. It provides robust ESD and surge protection for automotive power lines, industrial I/O ports, and telecom interface circuits.
For engineers reviewing the 1.5SMC47CAH datasheet, 1.5SMC47CAH pinout, 1.5SMC47CAH application, or 1.5SMC47CAH equivalent, this device delivers AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1ps response time, <1µA leakage above 40.2V, and bidirectional clamping symmetry critical for AC-coupled signal line protection.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR (44.7–49.4V), VWM (40.2V), and VC (64.8V @ 24A) specifications in forward and reverse directions. Its glass-passivated junction ensures stable clamping under repetitive transients.
Thermal performance is defined by RθJA = 50°C/W and RθJC = 15°C/W, supporting sustained operation up to TJ = 150°C. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements for automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR Min/Max | 44.7V / 49.4V - Ensures reliable conduction onset across manufacturing lot and temperature variation |
| VWM | 40.2V - Maximum continuous DC or RMS operating voltage before leakage exceeds 1µA |
| VC @ IPPM | 64.8V @ 24A - Clamped voltage during 10/1000µs surge, limiting downstream IC stress to safe levels |
| PPK | 1500W - Peak pulse power handling per single 10/1000µs waveform, derated above 25°C ambient |
| IR @ VWM | <1µA - Ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| TJ Range | −55°C to +150°C - Enables deployment in under-hood automotive and industrial environments |
| Package | DO-214AB (SMC) - Standardized 7.11 × 6.22 mm surface-mount outline compatible with IPC-7351B land patterns |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (bidirectional operation eliminates functional polarity distinction).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path terminal | Either lead serves as input/output for transient energy; no directional bias required in circuit layout |
| Cathode band marking | Manufacturing polarity indicator only | Present for traceability but electrically irrelevant - device performs identically in either orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications requiring zero defect reliability over 15+ year service life |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) without degradation |
| Glass passivated junction | Eliminates surface leakage paths and improves long-term stability under humidity and thermal cycling |
| Sub-1ps response time | Clamps ESD events (IEC 61000-4-2 ±15kV contact) before sensitive logic or analog circuitry sustains damage |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally constrained industrial and consumer end equipment |
Applications
| Automotive Power Line Protection | Industrial Digital I/O Protection |
|---|---|
Use Scenario: 12V battery rail in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power rail and ground to shunt surges exceeding 40.2V. Use Value: Limits transient voltage to ≤64.8V during 24A pulses, protecting 48V-tolerant MCUs and CAN transceivers without derating. |
Use Scenario: RS-485/RS-422 differential data lines in factory automation PLCs subject to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line) referenced to chassis ground, leveraging symmetrical clamping. Use Value: Maintains signal integrity below 64.8V clamping threshold while adding <0.5pF capacitance, preserving >20Mbps data rates. |
| Telecom Interface Surge Suppression | Consumer USB Port ESD Hardening |
Use Scenario: DSL/VDSL line interface cards receiving induced surges from outdoor copper pairs. IC Role / Device Role / Timing Role: Primary protection stage ahead of GDT or MOV secondary clamping, absorbing first 1500W surge energy. Use Value: Withstands repeated 10/1000µs surges per ITU-T K.21 Basic Level without parameter shift or catastrophic failure. |
Use Scenario: VBUS and D+/D− lines in USB 2.0 host ports subjected to ±15kV IEC 61000-4-2 contact discharge. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed directly at connector, grounded to system earth. Use Value: Sub-1ps response prevents latch-up in USB PHY ICs; <1µA leakage avoids standby current violations in battery-powered devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47CA | Lower PPK (600W), same VBR range (44.7–49.4V), SMB package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer electronics where 1500W surge immunity is not required | Select when board area is limited and peak surge energy is ≤600W; verify thermal margin with RθJA = 85°C/W |
| 1.5KE47CA | Through-hole TO-204AA (DO-41) package, identical electrical specs, lower assembly cost but no SMT compatibility | Preferred for legacy industrial controls using wave-soldered PCBs or prototyping breadboards | Choose for manual assembly, high-reliability through-hole designs, or where reflow compatibility is unnecessary |
Compared with 1.5SMC47CAH, SMBJ47CA offers reduced surge capacity in a smaller footprint, while 1.5KE47CA retains full electrical equivalence but requires through-hole assembly - making 1.5SMC47CAH optimal for high-power, automated SMT production targeting automotive and industrial markets.
Availability
1.5SMC47CAH is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial programmable logic controllers, and telecom base station interfaces requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC47CAH 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 applications.
The 1.5SMCxxCAH series was engineered specifically for AEC-Q101-compliant, high-energy transient suppression in harsh environment electronics - emphasizing reliability, surge repeatability, and SMT manufacturability.
FAQ
What does the "CAH" suffix indicate in 1.5SMC47CAH?
The "CAH" suffix denotes a bidirectional configuration with A-grade tolerance (±5% VBR) and halogen-free construction. Unlike unidirectional "CH" variants, 1.5SMC47CAH provides identical clamping behavior in both polarities - essential for AC signal lines, differential buses, and floating-ground systems where polarity cannot be guaranteed.
How does 1.5SMC47CAH differ from the unidirectional 1.5SMC47CH?
1.5SMC47CAH features symmetrical breakdown and clamping characteristics in both directions, whereas 1.5SMC47CH conducts only in reverse bias and blocks forward current. This makes 1.5SMC47CAH suitable for protecting AC-coupled or bidirectional data lines like RS-485, while 1.5SMC47CH is reserved for DC power rails with defined polarity.
Is 1.5SMC47CAH compatible with lead-free reflow soldering profiles?
Yes, 1.5SMC47CAH is rated for standard lead-free reflow per J-STD-020 Level 1 (peak temperature up to 260°C). Its matte tin-plated leads and UL 94V-0 molding compound ensure reliable wetting and mechanical integrity during JEDEC-standard 260°C peak exposure for ≤60 seconds.
What is the maximum allowable surge repetition rate for 1.5SMC47CAH?
1.5SMC47CAH is rated for non-repetitive 10/1000µs surges per Fig.5. Repetitive operation requires derating per Fig.2: at 25°C ambient, maximum duty cycle is <0.01% (e.g., one 1500W pulse every 10 seconds); at 75°C, limit drops to one pulse every 60 seconds to maintain TJ ≤150°C.
Does 1.5SMC47CAH meet IEC 61000-4-5 surge immunity standards?
1.5SMC47CAH is not certified to IEC 61000-4-5 (line-to-line/line-to-ground 1.2/50µs + 8/20µs combination wave), but its 1500W peak power rating and 64.8V clamping voltage enable system-level compliance when used with appropriate series impedance (e.g., 2Ω line resistor) to shape the 8/20µs current waveform within device limits.
1.5SMC47CAH 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 24A
- 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)
1.5SMC47CAH FAQ
1.How can I place an order for 1.5SMC47CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47CAH 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 1.5SMC47CAH reliable?
The price and inventory of 1.5SMC47CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC47CAH is usually 5 days.
3.What payment methods are accepted for 1.5SMC47CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47CAH?
1.5SMC47CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47CAH 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 1.5SMC47CAH?
For technical support, including 1.5SMC47CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47CAH requirements.
6.How does Aetrix verify that 1.5SMC47CAH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47CAH 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 1.5SMC47CAH meets industry standards.
7.What is the process for return or replacement of 1.5SMC47CAH?
All 1.5SMC47CAH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47CAH, 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 1.5SMC47CAH part is unused and in its original packaging.
Return procedure for 1.5SMC47CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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