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Taiwan Semiconductor Corporation 1.5SMC30H
- Part No.:
- 1.5SMC30H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC30H.pdf
- Description:
- 1500W, 30V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,431
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Product details
Overview
1.5SMC30H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary-level surge protection in DC power rails and signal lines. It features a 30V breakdown voltage (27–33V), 1500W peak pulse power rating, 43.5V maximum clamping voltage at 36A impulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 1.5SMC30H datasheet, 1.5SMC30H pinout, 1.5SMC30H application, or 1.5SMC30H equivalent, this device is selected for ESD and lightning-induced transient suppression in automotive infotainment power supplies, industrial sensor interfaces, and telecom front-end protection where fast response (<1ps), low leakage (<1μA @ 24.3V), and DO-214AB package compatibility are critical.
Technical Context
The 1.5SMC30H operates as a unidirectional avalanche diode with glass-passivated junction, enabling robust clamping under ISO 7637-2 Pulse 1/2a/2b/3a/3b transients. Its 24.3V working stand-off voltage ensures stable blocking during normal operation while allowing rapid conduction above 27V breakdown threshold.
Thermal performance is defined by 50°C/W junction-to-ambient and 15°C/W junction-to-case resistance, supporting continuous operation up to +150°C junction temperature. The device uses a single-die DO-214AB (SMC) package with matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR Min/Max | 27.0 V / 33.0 V - Ensures reliable turn-on within ±10% tolerance at 1.0 mA test current |
| VWM | 24.3 V - Maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC@IPPM | 43.5 V at 36 A - Clamped voltage during 10/1000 μs surge, limiting downstream stress |
| PPK | 1500 W - Peak pulse power handling per single 1 ms transient per Fig.5 waveform |
| IR@VWM | <1 μA - Ultra-low leakage preserves efficiency in high-impedance bias networks |
| TJ Max | +150 °C - Enables use in under-hood automotive and industrial environments |
| Response Time | <1.0 ps - Sub-picosecond junction response prevents transient energy propagation |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Case meets UL 94V-0 flammability rating; terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side terminal | Connected to protected line (e.g., 24V rail or signal trace); conducts surge current toward cathode |
| Cathode | Output/Ground reference terminal | Connected to system ground or low-impedance return path; defines polarity and clamping reference |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS power domains |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| ISO 7637-2 compliance | Withstands standardized automotive load-dump and switching transient waveforms without degradation |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; supports standard SMT assembly without special handling |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally constrained designs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24V supply inputs in vehicle infotainment head units from load dump and alternator transients. IC Role / Device Role / Timing Role: Primary clamping device placed at board edge before DC-DC converters and microcontrollers. Use Value: Limits voltage to ≤43.5V during 36A surges, preventing latch-up or damage to downstream 3.3V/5V logic. |
Use Scenario: Safeguarding 4–20mA current-loop transmitters in factory automation against ESD and cable-induced surges. IC Role / Device Role / Timing Role: Bidirectional-capable protection (via 1.5SMC30AH variant) across analog input/output pins. Use Value: Sub-1ps response captures fast transients before they couple into precision ADC front-ends. |
| Telecom Line Interface Protection | Consumer USB Power Delivery Protection |
Use Scenario: Shielding Ethernet PHY power pins (e.g., MDI-X bias rails) from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS placed between PoE injector output and PHY VDD supply. Use Value: 1500W rating handles multi-kV induced surges while maintaining <1μA leakage at 24.3V nominal. |
Use Scenario: Adding secondary overvoltage protection on USB-C VBUS lines after primary buck converter. IC Role / Device Role / Timing Role: Fast-clamping element between VBUS and chassis ground to shunt ESD events. Use Value: 43.5V clamping ensures USB PD 3.0 20V profiles remain within safe margin of 24.3V working voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | DO-214AA (SMB) package; 30V standoff; 600W PPK; higher RθJA (65°C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a (load dump) | Select when space-constrained layouts require smaller footprint and surge energy is ≤600W |
| 1.5KE30A | DO-201AD (axial leaded) through-hole; same 30V/1500W specs but no AEC-Q101 or moisture level 1 rating | Not suitable for automated SMT production or automotive under-hood thermal cycling | Choose only for legacy through-hole designs or non-automotive industrial prototypes |
Compared with SMBJ30A and 1.5KE30A, the 1.5SMC30H delivers superior automotive qualification, tighter thermal resistance, and full SMT process compatibility-making it the preferred choice for new automotive and high-reliability industrial designs requiring 1500W clamping in DO-214AB.
Availability
1.5SMC30H is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC I/O modules, and telecom base station power supplies requiring stable component supply, AEC-Q101 compliance, and 1500W transient immunity.
Supply support for 1.5SMC30H 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, and rectifiers with global distribution and AEC-Q101 validation capability.
The 1.5SMC30H belongs to TSC's SMC-series TVS platform, engineered specifically for high-energy transient suppression in automotive and industrial environments where reliability under thermal and electrical stress is mission-critical.
FAQ
What is the clamping voltage of the 1.5SMC30H under maximum rated surge current?
The 1.5SMC30H exhibits a maximum clamping voltage (VC) of 43.5 V when subjected to its peak impulse current (IPPM) of 36 A, measured using the standardized 10/1000 μs double-exponential waveform per Fig.5. This value ensures downstream components see limited overvoltage during worst-case transients, directly supporting design margin calculations for 24V system rails.
Is the 1.5SMC30H suitable for automotive applications?
Yes, the 1.5SMC30H is AEC-Q101 qualified and tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity standards. Its DO-214AB package, 150°C maximum junction temperature, and moisture sensitivity level 1 make it appropriate for under-hood and cabin-mounted automotive electronics including body control modules and ADAS power domains.
How does the 1.5SMC30H differ from the 1.5SMC30AH variant?
The 1.5SMC30H is unidirectional, while the 1.5SMC30AH is bidirectional-designed for AC or dual-polarity signal lines. Both share identical VBR (27–33V), VWM (24.3V), and VC (43.5V) ratings, but the AH version has symmetrical breakdown in both directions and uses CH/CAH suffixes per ordering code conventions. The 1.5SMC30H must not be substituted for AC-coupled applications.
What is the maximum leakage current specification for the 1.5SMC30H at its working voltage?
The 1.5SMC30H specifies a maximum blocking leakage current (IR) of less than 1 μA when biased at its working stand-off voltage (VWM) of 24.3 V. This ultra-low leakage minimizes power loss in high-impedance circuits such as sensor bias networks and battery-backed monitoring systems, preserving accuracy and standby efficiency.
Does the 1.5SMC30H require special PCB layout considerations?
Yes-the 1.5SMC30H should be placed as close as possible to the protected port with short, low-inductance traces to ground. Its DO-214AB (SMC) package requires the recommended pad layout per TSC's Package Outline Dimensions document to ensure mechanical reliability and thermal dissipation. Avoid routing sensitive signals near its anode/cathode paths to prevent coupling.
1.5SMC30H 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24.3V
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 43.5V
- Current - Peak Pulse (10/1000µs):
- 36A
- 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)
1.5SMC30H FAQ
1.How can I place an order for 1.5SMC30H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC30H 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 1.5SMC30H reliable?
The price and inventory of 1.5SMC30H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC30H is usually 5 days.
3.What payment methods are accepted for 1.5SMC30H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC30H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC30H?
1.5SMC30H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC30H 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 1.5SMC30H?
For technical support, including 1.5SMC30H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC30H requirements.
6.How does Aetrix verify that 1.5SMC30H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC30H 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 1.5SMC30H meets industry standards.
7.What is the process for return or replacement of 1.5SMC30H?
All 1.5SMC30H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC30H, 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 1.5SMC30H part is unused and in its original packaging.
Return procedure for 1.5SMC30H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC30H Tags
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