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Taiwan Semiconductor Corporation 1.5SMC22CAH
- Part No.:
- 1.5SMC22CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22CAH.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,962
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Product details
Overview
1.5SMC22CAH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with breakdown voltage 20.9–23.1 V at 1 mA test current, working stand-off voltage 18.8 V, clamping voltage 30.6 V at 51 A peak pulse current, and junction temperature range −55 °C to +150 °C. It protects automotive power-line interfaces and industrial I/O ports against ESD, lightning-induced surges, and load-switch transients.
For engineers reviewing the 1.5SMC22CAH datasheet, 1.5SMC22CAH pinout, 1.5SMC22CAH application, or 1.5SMC22CAH equivalent, this page delivers verified electrical specs, thermal performance data, ISO 7637-2 compliance status, AEC-Q101 qualification, and real-world use context for board-level surge protection design.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1.0 ps), low leakage (<1 µA at 18.8 V), and stable clamping under repetitive 10/1000 µs surge waveforms. Its unidirectional counterpart is 1.5SMC22CH; the "A" suffix denotes tighter VBR tolerance (±5% vs ±10%), and "H" confirms halogen-free, RoHS-compliant construction.
Thermal design is supported by RθJA = 50 °C/W and RθJC = 15 °C/W, enabling reliable operation up to 150 °C junction temperature. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - suitable for lead-free reflow without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 20.9 V / 23.1 V at 1 mA - defines minimum and maximum guaranteed breakdown threshold across production lot |
| VWM | 18.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 30.6 V at 51 A - clamping voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPK | 1500 W - peak pulse power handling per single 1 ms transient, derated above 25 °C ambient |
| IR @ VWM | <1 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +150 °C - enables deployment in under-hood automotive or enclosed industrial enclosures |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 7.11 mm × 6.22 mm footprint and 2.3 mm height |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (bidirectional symmetry means no functional polarity marking required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | Both terminals behave identically - no DC bias dependency; clamps positive and negative transients equally |
| Case (exposed metal pad) | Thermal conduction path only | No electrical connection; serves as heatsink interface but not electrically tied to either terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress-test requirements including HTOL, TCT, and ESD HBM/MM |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line capacitance discharge) without degradation |
| Fast response time | <1.0 ps - limits voltage overshoot before clamping engages, critical for protecting fast logic and analog inputs |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports green manufacturing and end-of-life recycling |
| Moisture sensitivity level 1 | No floor life limitation or baking requirement prior to reflow - simplifies SMT line logistics and reduces handling cost |
Applications
| Automotive Power Line Protection | Industrial Digital I/O Protection |
|---|---|
Use Scenario: 12 V battery rail in engine control units exposed to load-dump transients up to 35 V and ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Bidirectional clamping device placed between power input and upstream DC/DC converter input stage. Use Value: Limits transient voltage to ≤30.6 V, preventing overvoltage damage to 36 V-rated input capacitors and controller ICs. |
Use Scenario: RS-485 transceiver port on PLC backplane subjected to ESD events and inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Primary surge suppression element mounted directly at connector entry point, shunting energy before signal conditioning circuitry. Use Value: Clamps ±15 kV contact ESD (IEC 61000-4-2) to <31 V, preserving signal integrity and avoiding latch-up in transceivers. |
| Telecom AC/DC Adapter Input | Consumer USB-C Port Surge Shield |
Use Scenario: Secondary-side rectifier output in offline AC/DC adapters where lightning-induced surges couple into low-voltage DC bus. IC Role / Device Role / Timing Role: Parallel-connected TVS across +VOUT and GND, sized to absorb 1500 W peak pulses without failure. Use Value: Absorbs 10/1000 µs surges up to 51 A while maintaining VC ≤30.6 V - avoids brownout or reset of downstream PMICs. |
Use Scenario: USB-C receptacle on portable speaker exposed to user-handling ESD and hot-plug transients during cable insertion. IC Role / Device Role / Timing Role: Bidirectional TVS placed on VBUS and CC lines to protect USB PD controller and power switch FETs. Use Value: Sub-1 ps response ensures clamping initiates before 100 ns rise-time ESD pulses reach sensitive PHY 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 |
|---|---|---|---|
| SMBJ22CA | 600 W rating, SMB package (smaller footprint, higher RθJA = 85 °C/W), same VBR range and bidirectional configuration | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-current load dump | Select when space-constrained PCB layout prioritizes size over 1500 W surge margin |
| 1.5KE22CA | Through-hole DO-201 package, identical 1500 W rating and VBR/VC specs, but slower mounting and no AEC-Q101 qualification | Not suitable for automated SMT lines or automotive under-hood environments requiring vibration resistance | Select only for legacy through-hole designs or non-automotive industrial prototypes where reflow compatibility is irrelevant |
Compared with SMBJ22CA and 1.5KE22CA, the 1.5SMC22CAH uniquely combines AEC-Q101 qualification, ISO 7637-2 compliance, SMT-ready DO-214AB packaging, and 1500 W capability - making it the preferred choice for production automotive and industrial modules requiring validated reliability and automated assembly.
Availability
1.5SMC22CAH is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial PLC digital I/O modules, telecom AC/DC adapter outputs, and consumer USB-C port protection requiring stable component supply and full traceability.
Supply support for 1.5SMC22CAH 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 targets high-reliability automotive and industrial surge protection, engineered specifically to meet ISO 7637-2 and AEC-Q101 requirements while maintaining compatibility with standard SMT assembly processes.
FAQ
What does the "CAH" suffix mean in 1.5SMC22CAH?
The "C" indicates bidirectional configuration, "A" denotes ±5% breakdown voltage tolerance (tighter than standard ±10% "H" variants), and "H" confirms halogen-free, RoHS-compliant construction per IEC 61249-2-21. This makes 1.5SMC22CAH suitable for automotive and green-electronics applications where material compliance and precision clamping are mandatory.
Is 1.5SMC22CAH compatible with lead-free reflow soldering?
Yes, 1.5SMC22CAH is rated for moisture sensitivity level 1 per J-STD-020, meaning it can be processed using standard lead-free reflow profiles (peak temperature up to 260 °C) without baking or special handling. Its matte tin-plated leads ensure reliable wetting and joint formation under IPC-J-STD-002B conditions.
How does 1.5SMC22CAH perform under ISO 7637-2 Pulse 5a (load dump)?
1.5SMC22CAH is explicitly validated for ISO 7637-2 Pulse 5a (35 V, 100 ms, 1 Ω source impedance). With its 1500 W peak power rating and 30.6 V clamping voltage at 51 A, it limits the voltage seen by downstream components to safe levels during sustained load-dump events - a key requirement for automotive power-supply front-ends.
Can 1.5SMC22CAH replace unidirectional 1.5SMC22CH in existing designs?
Yes, 1.5SMC22CAH can directly replace 1.5SMC22CH in most cases because both share identical package (DO-214AB), thermal specs, and clamping performance. However, the bidirectional nature of 1.5SMC22CAH eliminates polarity concerns during placement and provides symmetrical protection - advantageous in AC-coupled or floating-bus applications where voltage polarity reversal occurs.
What is the maximum allowable printed circuit board copper area for optimal thermal performance of 1.5SMC22CAH?
For optimal thermal dissipation, Taiwan Semiconductor recommends ≥100 mm² of 2 oz copper connected to both terminals on the same layer, with thermal vias to inner ground/power planes. This achieves near-datasheet RθJA = 50 °C/W; reducing copper area increases junction temperature and de-rates peak power handling proportionally per Fig.2 in the datasheet.
1.5SMC22CAH 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 51A
- 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)
1.5SMC22CAH FAQ
1.How can I place an order for 1.5SMC22CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22CAH 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 1.5SMC22CAH reliable?
The price and inventory of 1.5SMC22CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC22CAH is usually 5 days.
3.What payment methods are accepted for 1.5SMC22CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22CAH?
1.5SMC22CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22CAH 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 1.5SMC22CAH?
For technical support, including 1.5SMC22CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22CAH requirements.
6.How does Aetrix verify that 1.5SMC22CAH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22CAH 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 1.5SMC22CAH meets industry standards.
7.What is the process for return or replacement of 1.5SMC22CAH?
All 1.5SMC22CAH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22CAH, 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 1.5SMC22CAH part is unused and in its original packaging.
Return procedure for 1.5SMC22CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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