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Taiwan Semiconductor Corporation 1.5SMC22C
- Part No.:
- 1.5SMC22C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22C.pdf
- Description:
- 1500W, 22V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,956
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Product details
Overview
1.5SMC22C from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 1500W peak pulse power, 22V breakdown voltage (19.8–24.2V), and 31.9V maximum clamping voltage at 49A peak impulse current. It protects telecom and industrial interfaces against ESD, lightning surges, and load-switch transients.
For engineers reviewing the 1.5SMC22C datasheet, 1.5SMC22C pinout, 1.5SMC22C application, or 1.5SMC22C equivalent, this page delivers verified electrical specs, thermal performance, bidirectional clamping behavior, JEDEC-compliant packaging, and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance for automotive-grade surge immunity design.
Technical Context
The 1.5SMC22C operates as a symmetrical (bidirectional) avalanche diode with glass-passivated junction, enabling identical clamping in both polarities. Its 1.0mA test current defines VBR, and it maintains <1μA leakage at 17.8V working stand-off voltage.
Thermally, it features 15°C/W junction-to-case and 50°C/W junction-to-ambient resistance, supporting sustained operation up to +150°C junction temperature. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.8V / 24.2V - Ensures reliable avalanche conduction onset across manufacturing tolerance at 1.0mA test current |
| VWM | 17.8V - Maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 31.9V at 49A - Clamping voltage during 10/1000μs surge; limits 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 max | +150°C - Enables use in under-hood automotive, industrial motor drives, and high-temperature PCB layouts |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 0.210g mass, UL 94V-0 molding, matte tin leads |
Pinout & Package
DO-214AB (SMC) package: surface-mount, bidirectional device with cathode band omitted (symmetrical terminals); case polarity not applicable; terminals are non-polarized anode/cathode pair for AC-coupled protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Surge current entry (negative polarity) | Accepts transient energy during negative half-cycle; forms low-impedance path to ground when VBR exceeded |
| Cathode (Terminal 2) | Surge current entry (positive polarity) | Accepts transient energy during positive half-cycle; identical clamping behavior to Terminal 1 due to bidirectional symmetry |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over time and temperature; eliminates surface contamination-induced leakage drift |
| Fast response time <1.0ps | Clamps ESD events (IEC 61000-4-2) before sensitive logic or analog circuitry sustains damage |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive 12V/24V system immunity including battery disconnect, inductive load dump, and alternator ripple |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU; supports green manufacturing and end-of-life recycling |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly without floor-life constraints |
Applications
| Automotive Infotainment Interfaces | Industrial Ethernet PHY Protection |
|---|---|
Use Scenario: Protecting CAN-FD and USB 2.0 lines in head unit modules exposed to battery transients and ESD during service. IC Role / Device Role: Bidirectional clamping element placed between connector and PHY IC input pins. Use Value: Limits induced surges to ≤31.9V, preventing latch-up or gate oxide rupture in 3.3V/5V interface ICs while maintaining <1μA standby leakage. | Use Scenario: Shielding RJ45 magnetics and Ethernet PHYs in PLC backplanes from lightning-induced common-mode surges. IC Role / Device Role: Primary line-to-ground TVS on differential pairs (e.g., TX+/TX−) in 10/100BASE-TX designs. Use Value: Absorbs 1500W pulses without degradation; clamps to 31.9V within 1ps, preserving signal integrity and meeting IEC 61000-4-5 Level 3 requirements. |
| Telecom DSL Line Cards | Smart Meter RS-485 Ports |
Use Scenario: Guarding ADSL/VDSL line drivers against induced surges from nearby power lines and electrostatic discharge during field installation. IC Role / Device Role: Secondary protection stage after gas discharge tube (GDT), directly at line driver output pins. Use Value: Provides precise 22V standoff and sub-32V clamping to match driver IC absolute maximum ratings; enables compact layout with no external biasing. | Use Scenario: Securing two-wire RS-485 transceivers in utility meters deployed in outdoor substations subject to lightning coupling. IC Role / Device Role: Bidirectional TVS on A/B bus lines referenced to local ground plane. Use Value: Withstands repeated 49A impulses per IEC 61000-4-5; maintains VWM = 17.8V to avoid false triggering during 12V bus idle states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA (Bourns) | Same DO-214AA (SMB) package; 600W rating; lower PPK and higher VC (35.5V @ 17.1A) | Not suitable for 1500W ISO 7637-2 Pulse 5a load dump; limited to lower-energy ESD/lightning scenarios | Select only if board space requires SMB footprint and surge energy is ≤600W |
| 1.5KE22CA (ON Semiconductor) | Through-hole DO-15 package; same 1500W rating; slightly higher VC (33.2V @ 45.3A); longer lead inductance | Unsuitable for high-frequency surge suppression due to parasitic inductance; incompatible with automated SMT assembly | Choose only for legacy through-hole designs where rework of SMT pads is impractical |
Compared with SMBJ22CA and 1.5KE22CA, the 1.5SMC22C uniquely combines 1500W SMT capability, 31.9V clamping, DO-214AB mechanical robustness, and full ISO 7637-2 validation-making it the preferred choice for new automotive and industrial surface-mount surge protection designs.
Availability
1.5SMC22C is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial Ethernet equipment, and smart metering platforms requiring stable component supply, long-term lifecycle assurance, and AEC-Q200-aligned reliability data.
Supply support for 1.5SMC22C 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for industrial and automotive markets.
The 1.5SMC series was engineered specifically for high-energy, surface-mount transient suppression in harsh environments-emphasizing low clamping ratio, repeatable surge endurance, and compliance with ISO 7637-2 and IEC 61000-4-5 standards.
FAQ
What is the polarity configuration of the 1.5SMC22C?
The 1.5SMC22C is a bidirectional TVS diode with symmetrical terminal behavior-neither terminal is designated anode or cathode in the conventional sense. It clamps identically for both positive and negative transients, making it ideal for AC-coupled or differential signal lines such as RS-485, CAN, or Ethernet. No polarity marking is present on the DO-214AB body.
Does the 1.5SMC22C meet automotive surge immunity standards?
Yes, the 1.5SMC22C meets ISO 7637-2 Pulse 1 (inductive switch-off), Pulse 2a/2b (battery connection/disconnection), and Pulse 3a/3b (capacitive coupled noise), validated per manufacturer test reports. Its 1500W rating, 31.9V clamping, and thermal robustness make it suitable for 12V and 24V automotive subsystems including body control modules and infotainment interfaces.
What is the maximum clamping voltage of the 1.5SMC22C and at what current is it specified?
The maximum clamping voltage of the 1.5SMC22C is 31.9V, measured at 49A peak impulse current (IPPM) under the standardized 10/1000μs double-exponential waveform. This value ensures downstream 3.3V or 5V ICs remain within absolute maximum voltage ratings during worst-case surge events.
How does the 1.5SMC22C differ from the 1.5SMC22CA variant?
The 1.5SMC22C and 1.5SMC22CA are functionally identical in electrical performance and packaging. The "A" suffix denotes tighter VBR tolerance (±5% vs. ±10% for non-A parts), but both share the same 19.8–24.2V breakdown range, 31.9V clamping, DO-214AB package, and ISO 7637-2 qualification. The 1.5SMC22C is the standard-grade version used in cost-sensitive industrial applications.
Can the 1.5SMC22C be used in parallel for higher surge current handling?
No-parallel connection of 1.5SMC22C devices is not recommended due to mismatched VBR tolerances causing uneven current sharing and premature failure of the lower-breakdown unit. For higher surge capacity, select a single higher-rated device (e.g., 3.0SMC22C) or implement staged protection with GDT + 1.5SMC22C.
1.5SMC22C 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):
- 17.8V
- Voltage - Breakdown (Min):
- 19.8V
- Voltage - Clamping (Max) @ Ipp:
- 31.9V
- Current - Peak Pulse (10/1000µs):
- 49A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC22C FAQ
1.How can I place an order for 1.5SMC22C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22C 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 1.5SMC22C reliable?
The price and inventory of 1.5SMC22C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC22C is usually 5 days.
3.What payment methods are accepted for 1.5SMC22C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22C?
1.5SMC22C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22C 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 1.5SMC22C?
For technical support, including 1.5SMC22C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22C requirements.
6.How does Aetrix verify that 1.5SMC22C is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22C 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 1.5SMC22C meets industry standards.
7.What is the process for return or replacement of 1.5SMC22C?
All 1.5SMC22C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22C, 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 1.5SMC22C part is unused and in its original packaging.
Return procedure for 1.5SMC22C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC22C Tags
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