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Taiwan Semiconductor Corporation 1.5SMC27C
- Part No.:
- 1.5SMC27C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC27C.pdf
- Description:
- 1500W, 27V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,156
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Product details
Overview
1.5SMC27C from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 1500W peak pulse power, 27V breakdown voltage (min 24.3V, max 29.7V), and clamping voltage of 39.1V at 40A peak impulse current. It protects telecom interfaces and industrial I/O lines against ESD, lightning surges, and load-switching transients.
For engineers reviewing the 1.5SMC27C datasheet, 1.5SMC27C pinout, 1.5SMC27C application, or 1.5SMC27C equivalent, this device delivers verified unidirectional/bidirectional surge immunity per ISO 7637-2 Pulse 1/2a/2b/3a/3b, with <1.0ps response time, <1μA leakage above 23.1V, and junction temperature range of –55°C to +150°C.
Technical Context
The 1.5SMC27C employs a glass-passivated silicon junction optimized for fast transient suppression in both polarities. Its bidirectional configuration enables symmetrical clamping without polarity dependency, supporting robust protection in AC-coupled or floating signal paths.
Designed for automated SMT placement, it features matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Thermal performance includes RθJA = 50°C/W and RθJC = 15°C/W, enabling reliable operation under sustained surge duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (tp = 1 ms) | 1500 W - sustains high-energy transients per IEC 61000-4-5 Level 4 without failure |
| Breakdown Voltage VBR @ IT = 1.0 mA | 24.3–29.7 V - ensures reliable triggering before downstream IC damage thresholds |
| Working Stand-off Voltage VWM | 21.8 V - defines maximum continuous DC/AC operating voltage without leakage activation |
| Maximum Clamping Voltage VC @ IPPM = 40 A | 39.1 V - limits protected circuit voltage during worst-case 10/1000 µs surge |
| Junction Temperature Range | –55°C to +150°C - supports deployment in automotive engine bays and industrial enclosures |
| Response Time | <1.0 ps - reacts faster than most semiconductor switching events, preventing voltage overshoot |
| Leakage Current IR @ VWM | <1 µA - avoids signal distortion or bias shift in high-impedance analog/sensor circuits |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with cathode band omitted (symmetrical terminals). Case meets UL 94V-0 flammability rating; weight ≈ 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical terminals enable bidirectional clamping-no polarity orientation required during placement |
Key Features
| Feature | Design Value |
|---|---|
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) in automotive and industrial systems |
| Glass passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift |
| Moisture sensitivity level 1 | Zero bake requirement before reflow-compatible with standard SMT assembly lines without dry-pack handling |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications |
| Fast response & low clamping ratio | VC/VBR ≈ 1.37 - minimizes let-through energy compared to competing 27V TVS devices |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24V digital input channels in programmable logic controllers from inductive kickback and ESD during field wiring. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt transients before signal conditioning circuitry. Use Value: Withstands repeated 1500W surges while maintaining VWM = 21.8V margin above nominal 24V rail, ensuring no false triggering during normal operation. |
Use Scenario: Safeguarding LIN bus transceivers and sensor inputs in body electronics exposed to battery load-dump pulses and ESD events. IC Role / Device Role / Timing Role: Primary surge suppression element on LIN data line and 12V supply rails, meeting ISO 7637-2 Pulse 1 (–100V/100ms) and Pulse 2a (+100V/50ms). Use Value: Clamps to 39.1V within <1ps, limiting transceiver stress below absolute maximum ratings while supporting full automotive temperature range. |
| Telecom Ethernet Port Protection | Smart Meter Communication Interface |
Use Scenario: Shielding 10/100BASE-TX PHY differential pairs from lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Paired bidirectional 1.5SMC27C units across each differential pair (TX+/TX–, RX+/RX–), referenced to chassis ground. Use Value: Symmetrical 27V VBR ensures balanced clamping on both signal polarities, preserving common-mode rejection and signal integrity up to 100 MHz. |
Use Scenario: Securing RS-485 and PLC communication ports in utility meters installed in electrically noisy substations and distribution cabinets. IC Role / Device Role / Timing Role: Front-end transient suppressor on bus lines, coordinated with GDT or polymer PTC for multi-stage protection architecture. Use Value: 1500W rating handles high-current surges from nearby lightning strikes, while low leakage (<1µA) prevents meter calibration drift over 15+ year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27CA (Bourns) | Same DO-214AA (SMB) package; lower 600W rating; VBR = 28.9–31.9V; VC = 43.5V @ 25A | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 or high-current lightning tests | Select only when board space constraints prohibit SMC footprint and surge requirements are ≤600W |
| SMCJ27CA (Littelfuse) | DO-214AB (SMC) package; identical 1500W rating; tighter VBR tolerance (25.7–28.4V); VC = 37.5V @ 42A | Lower clamping voltage improves protection margin but requires verification of layout parasitics due to higher IPPM | Preferred where clamping voltage headroom is critical; verify PCB trace inductance does not degrade response |
Compared with 1.5SMC27C, SMBJ27CA offers smaller footprint but sacrifices 60% peak power handling, while SMCJ27CA matches package and power rating but achieves 4% lower clamping voltage-enabling tighter protection margins in noise-sensitive analog front-ends.
Availability
1.5SMC27C is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and telecom infrastructure requiring stable component supply, long-lifecycle support, and AEC-Q200-aligned reliability validation.
Supply support for 1.5SMC27C 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs since 1979.
The 1.5SMC series was engineered for high-reliability transient suppression in harsh environments-targeting automotive, industrial control, and communications equipment where ISO 7637-2 and IEC 61000-4-5 compliance are mandatory.
FAQ
What is the polarity configuration of the 1.5SMC27C?
The 1.5SMC27C is a bidirectional TVS diode, meaning it provides symmetrical clamping in both forward and reverse directions. Unlike unidirectional variants (e.g., 1.5SMC27A), it has no cathode marking and functions identically regardless of voltage polarity-ideal for AC signal lines and floating buses.
Does the 1.5SMC27C meet automotive surge immunity standards?
Yes, the 1.5SMC27C is explicitly validated to meet ISO 7637-2 Pulse 1 (load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) requirements. Its 1500W peak power rating and sub-1ps response ensure robust protection in 12V and 24V automotive subsystems.
What is the maximum steady-state power dissipation for the 1.5SMC27C?
The 1.5SMC27C has a steady-state power dissipation (PD) of 6.5 W at TA = 25°C. This value derates linearly above 25°C per the thermal derating curve (Fig.2), reaching zero at 150°C junction temperature-critical for thermal design in enclosed industrial enclosures.
How does the 1.5SMC27C compare to the 1.5SMC27A in terms of electrical performance?
The 1.5SMC27A is unidirectional with VBR = 25.7–28.4V and VC = 37.5V @ 42A, while the 1.5SMC27C is bidirectional with VBR = 24.3–29.7V and VC = 39.1V @ 40A. The C-suffix variant trades 4% higher clamping for full AC symmetry and eliminates polarity-dependent layout constraints.
Is the 1.5SMC27C compatible with lead-free reflow soldering processes?
Yes, the 1.5SMC27C uses matte tin-plated leads qualified to J-STD-002 for solderability and complies with JEDEC JESD201 Class 2 for tin whisker resistance. It supports standard lead-free reflow profiles (peak 260°C, 60 sec max) without degradation of clamping performance or reliability.
1.5SMC27C 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):
- 21.8V
- Voltage - Breakdown (Min):
- 24.3V
- Voltage - Clamping (Max) @ Ipp:
- 39.1V
- Current - Peak Pulse (10/1000µs):
- 40A
- 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)
1.5SMC27C FAQ
1.How can I place an order for 1.5SMC27C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC27C 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 1.5SMC27C reliable?
The price and inventory of 1.5SMC27C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC27C is usually 5 days.
3.What payment methods are accepted for 1.5SMC27C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC27C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC27C?
1.5SMC27C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC27C 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 1.5SMC27C?
For technical support, including 1.5SMC27C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC27C requirements.
6.How does Aetrix verify that 1.5SMC27C is sourced from the original manufacturer or authorized distributors?
All 1.5SMC27C 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 1.5SMC27C meets industry standards.
7.What is the process for return or replacement of 1.5SMC27C?
All 1.5SMC27C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC27C, 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 1.5SMC27C part is unused and in its original packaging.
Return procedure for 1.5SMC27C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC27C Tags
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