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Taiwan Semiconductor Corporation 1.5SMC20CAH
- Part No.:
- 1.5SMC20CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC20CAH.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,760
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Product details
Overview
1.5SMC20CAH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with breakdown voltage 19.0–21.0 V, working stand-off voltage 17.1 V, and clamping voltage 27.7 V at 56 A peak pulse current. It protects automotive-grade electronics against ESD, load dump, and ISO 7637-2 transients.
For engineers reviewing the 1.5SMC20CAH datasheet, 1.5SMC20CAH pinout, 1.5SMC20CAH application, or 1.5SMC20CAH equivalent, this page delivers verified electrical specs, thermal performance, AEC-Q101 qualification status, and real-world design context for robust overvoltage protection in harsh environments.
Technical Context
The 1.5SMC20CAH is a bipolar TVS diode designed for symmetrical transient suppression in both directions, meeting ISO 7637-2 Pulse 1/2a/2b/3a/3b waveforms. Its glass-passivated junction ensures stable clamping and low leakage (<1 µA at 17.1 V), while fast response time (<1.0 ps) enables effective suppression of nanosecond-scale ESD events.
Thermally, it features RθJA = 50°C/W and RθJC = 15°C/W, supporting reliable operation up to TJ = +150°C. The device is rated for 1500 W peak pulse power (10/1000 µs waveform) and 6.5 W steady-state dissipation, with moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 19.0 V / 21.0 V - Ensures consistent breakdown across production lots; defines minimum trigger threshold under 1 mA test current. |
| VWM | 17.1 V - Maximum continuous reverse operating voltage before significant leakage begins; sets system-level DC rail margin. |
| VC @ IPPM | 27.7 V at 56 A - Clamped voltage during 10/1000 µs surge; determines maximum stress on downstream ICs. |
| PPK | 1500 W - Peak pulse power handling capability; validates suitability for automotive load-dump and lightning-induced surges. |
| IR @ VWM | <1 µA - Ultra-low blocking leakage; prevents battery drain in always-on vehicle modules. |
| TJ max | +150 °C - Junction temperature limit enabling use in under-hood automotive locations without derating. |
| Package | DO-214AB (SMC) - Standardized SMT footprint compatible with automated placement; UL 94V-0 molding compound. |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking for unidirectional variants; 1.5SMC20CAH is bidirectional and marked with "EGJ" code - no polarity designation required. Matte tin-plated leads meet J-STD-002 solderability standards and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | Both terminals function identically; connects across protected line (e.g., CAN_H–CAN_L or supply–return) without orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and infotainment systems. |
| ISO 7637-2 compliance | Guarantees immunity to standardized vehicle electrical transients (Pulse 1, 2a, 2b, 3a, 3b) without external filtering. |
| Glass passivated junction | Enhances long-term reliability and stability of VBR and leakage under thermal cycling and humidity stress. |
| Fast response time <1.0 ps | Enables clamping before ESD energy couples into sensitive analog or communication interfaces. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and global environmental regulations for automotive and industrial end equipment. |
Applications
| Automotive CAN Bus Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L differential pair in automotive ECUs against ESD and load-dump transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt surge energy before reaching transceiver. Use Value: Maintains signal integrity by limiting differential voltage to ≤27.7 V during 56 A surge, preserving CAN FD timing margins and preventing transceiver latch-up. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to inductive switching noise. IC Role / Device Role / Timing Role: Standoff protector across input terminal and common rail to absorb repetitive 1500 W transients from solenoid coil de-energization. Use Value: Enables >100,000 surge cycles without degradation due to low IR and stable VBR, reducing field failure rates in factory automation. |
| Telecom Power Supply Input | Consumer USB-C Port ESD Protection |
Use Scenario: Secondary-side overvoltage suppression on 12 V/24 V telecom power distribution boards subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Final-stage clamp after primary MOV and filter inductors, absorbing residual high-frequency energy. Use Value: Limits clamped voltage to 27.7 V, ensuring downstream DC-DC converters remain within absolute maximum ratings during 10/1000 µs surges. | Use Scenario: Board-level ESD protection for USB-C CC and VBUS lines in portable devices requiring <1 µA leakage to preserve battery life. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to connector to divert ±15 kV contact discharge per IEC 61000-4-2. Use Value: Sub-1 µA leakage at 17.1 V prevents standby current increase; fast <1 ps response avoids data corruption during hot-plug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | 600 W peak power rating; same DO-214AA package but lower PPK and higher VC (32.4 V @ 25 A). | Not suitable for ISO 7637-2 Pulse 5a (load dump); limited to lower-energy ESD and inductive spikes. | Select when board space constraints require smaller SMB package and surge energy is below 600 W. |
| 1.5KE20CA | Through-hole TO-204AA (DO-41) package; identical 1500 W rating but incompatible with SMT assembly. | Requires manual or wave-solder process; unsuitable for high-volume automated production. | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMBJ20CA and 1.5KE20CA, the 1.5SMC20CAH uniquely combines AEC-Q101 qualification, 1500 W SMT capability, and ISO 7637-2 compliance in DO-214AB - making it the preferred choice for automotive and industrial surface-mount overvoltage protection where reliability, power handling, and manufacturability are jointly critical.
Availability
1.5SMC20CAH is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom power supplies, and consumer USB-C interface protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for 1.5SMC20CAH 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-Q101 validation capabilities.
The 1.5SMCxxCAH series is part of TSC's automotive-grade transient suppression portfolio, engineered specifically for robust, high-power surge protection in vehicular and industrial environments where ISO 7637-2 and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC20CAH under standard surge conditions?
The 1.5SMC20CAH has a maximum clamping voltage (VC) of 27.7 V at 56 A peak pulse current (IPPM) using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see no more than 27.7 V during worst-case transient events, directly supporting design margin calculations for 24 V automotive and industrial systems.
Is the 1.5SMC20CAH suitable for bidirectional signal line protection like CAN or RS-485?
Yes, the 1.5SMC20CAH is explicitly designed for bidirectional protection with symmetrical breakdown characteristics in both polarities. Its VBR range of 19.0–21.0 V and matched clamping behavior make it ideal for differential bus protection such as CAN, LIN, and RS-485, where voltage symmetry between lines is essential to prevent common-mode distortion or receiver saturation.
Does the 1.5SMC20CAH meet AEC-Q101 requirements for automotive use?
Yes, the 1.5SMC20CAH is AEC-Q101 qualified, having passed stress tests including high-temperature operating life, temperature cycling, and ESD per JS-001. This qualification confirms its suitability for under-hood and cabin-mounted automotive electronics, including body control modules, ADAS sensors, and infotainment power rails where reliability under thermal and electrical stress is critical.
What is the maximum steady-state power dissipation for the 1.5SMC20CAH?
The 1.5SMC20CAH has a steady-state power dissipation (PD) rating of 6.5 W at TA = 25°C. This value reflects continuous DC or low-frequency power handling capability and must be derated linearly above 25°C ambient using the specified RθJA = 50°C/W - for example, to ~4.0 W at 75°C ambient - ensuring safe thermal operation in enclosed enclosures.
How does the 1.5SMC20CAH compare to unidirectional TVS diodes like 1.5SMC20CH in circuit implementation?
The 1.5SMC20CAH eliminates polarity concerns in layout and assembly, unlike the unidirectional 1.5SMC20CH which requires correct anode/cathode orientation relative to ground. In bidirectional applications such as AC lines or differential buses, the 1.5SMC20CAH simplifies design, reduces BOM count, and avoids field failures caused by misoriented placement - while maintaining identical VBR, VC, and PPK performance.
1.5SMC20CAH 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 56A
- 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)
1.5SMC20CAH FAQ
1.How can I place an order for 1.5SMC20CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC20CAH 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 1.5SMC20CAH reliable?
The price and inventory of 1.5SMC20CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC20CAH is usually 5 days.
3.What payment methods are accepted for 1.5SMC20CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC20CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC20CAH?
1.5SMC20CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC20CAH 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 1.5SMC20CAH?
For technical support, including 1.5SMC20CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC20CAH requirements.
6.How does Aetrix verify that 1.5SMC20CAH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC20CAH 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 1.5SMC20CAH meets industry standards.
7.What is the process for return or replacement of 1.5SMC20CAH?
All 1.5SMC20CAH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC20CAH, 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 1.5SMC20CAH part is unused and in its original packaging.
Return procedure for 1.5SMC20CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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