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Taiwan Semiconductor Corporation 1.5SMC30CH
- Part No.:
- 1.5SMC30CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC30CH.pdf
- Description:
- 1500W, 30V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:7,379
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Product details
Overview
1.5SMC30CH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust ESD and surge protection in 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, and DO-214AB (SMC) package - used in automotive infotainment power inputs and industrial I/O interfaces.
For engineers reviewing the 1.5SMC30CH datasheet, 1.5SMC30CH pinout, 1.5SMC30CH application, or 1.5SMC30CH equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, <1μA leakage at 24.3V, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: during transients exceeding its breakdown threshold, it avalanches to divert surge current away from downstream circuitry while maintaining clamped voltage below 43.5V. Its glass-passivated junction ensures stable VBR tolerance (±10%) and low leakage (<1μA at VWM = 24.3V).
Thermally, it delivers RθJA = 50°C/W and RθJC = 15°C/W, enabling reliable operation up to TJ = 150°C. The DO-214AB package supports automated placement and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 27.0V / 33.0V - defines precise avalanche initiation range under 1mA test current; ensures consistent clamping onset across temperature and unit variance |
| VWM | 24.3V - maximum continuous reverse operating voltage; sets safe DC bias margin before leakage rises significantly |
| VC @ IPPM | 43.5V at 36A - peak clamped voltage during 10/1000μs surge; guarantees protected ICs see <44V stress even under worst-case 1500W transient |
| PPK | 1500W - peak pulse power handling per 1ms waveform; supports high-energy lightning-induced surges per IEC 61000-4-5 Level 4 |
| IR @ VWM | <1μA - ultra-low blocking leakage at rated stand-off voltage; avoids unnecessary power drain in battery-backed or low-quiescent systems |
| TJ max | +150°C - maximum junction temperature; enables deployment in under-hood automotive or enclosed industrial enclosures without derating |
| Response time | <1.0ps - sub-picosecond avalanche response; protects fast-edge digital interfaces (e.g., CAN FD, USB 2.0) before transient propagates |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with cathode band omitted (symmetrical terminals). Matte tin-plated leads, RoHS and halogen-free compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path | No polarity marking required; either terminal serves as input/output - simplifies PCB layout and eliminates orientation errors in automated assembly |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS power domains - no additional qualification testing needed |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Guarantees immunity to real-world vehicle electrical disturbances - eliminates need for supplemental filtering in 12V/24V systems |
| Glass passivated junction | Ensures long-term VBR stability and low parameter drift over 10+ years of thermal cycling and humidity exposure |
| DO-214AB mechanical robustness | Withstands >200g mechanical shock and 85°C/85% RH for 1000 hrs - suitable for harsh industrial and transportation environments |
| Fast response (<1ps) | Clamps before edge-sensitive receivers (e.g., RS-485 transceivers, CAN controllers) experience logic upset or latch-up |
Applications
| Automotive Power Input Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery rail feeding infotainment head unit with load-dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional shunt clamp absorbing ISO 7637-2 Pulse 5a (load dump) and Pulse 1 (inductive switch-off). Use Value: Limits voltage to ≤43.5V during 1500W surges, preventing damage to DC-DC converters and microcontrollers without adding series impedance. |
Use Scenario: 4–20mA current loop sensor connected to PLC analog input exposed to field wiring surges. IC Role / Device Role / Timing Role: Low-leakage (≤1μA) bidirectional TVS placed across loop terminals to suppress EFT and lightning-induced common-mode transients. Use Value: Maintains signal integrity by clamping transients within 1ps while adding negligible offset error (<0.01% FS) due to near-zero DC leakage. |
| Telecom Line Card Surge Suppression | Consumer USB Port ESD Hardening |
Use Scenario: Ethernet PHY interface on telecom line card subjected to induced surges from nearby AC power cables. IC Role / Device Role / Timing Role: Primary-level TVS on differential pairs (e.g., TX+/TX−), coordinated with secondary GDT or polymer PTC. Use Value: Clamps common-mode surges to <44V before reaching PHY IC, meeting IEC 61000-4-5 Level 3 (2kV/1kA) without degrading signal rise time. |
Use Scenario: VBUS line of USB 2.0 port in smart speaker exposed to human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Fast-response (sub-ps) bidirectional clamp between VBUS and GND, placed upstream of USB switch or LDO. Use Value: Survives ±15kV contact discharge per IEC 61000-4-2 while maintaining <1μA standby leakage - no impact on battery life or port detection timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA (Bourns) | Same DO-214AA package (slightly smaller footprint), 30V VBR, 600W PPK, higher VC = 48.4V @ 12.3A | Limited to lower-energy transients (e.g., IEC 61000-4-2 only); not rated for ISO 7637-2 Pulse 5a | Select when space-constrained and surge energy ≤600W; verify layout clearance for smaller SMB package |
| 1.5KE30CA (ON Semiconductor) | Through-hole DO-15 package, same 30V VBR, 1500W PPK, VC = 48.4V @ 31A, slower thermal response | Requires manual or wave soldering; unsuitable for fully SMT lines or high-vibration environments | Select only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ30CA and 1.5KE30CA, the 1.5SMC30CH offers superior surge energy handling in an AEC-Q101-qualified SMT package with tighter clamping (43.5V vs. ≥48.4V) and faster response - making it optimal for automotive and high-reliability industrial SMT production.
Availability
1.5SMC30CH is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom infrastructure requiring stable component supply with full traceability and lifecycle management.
Supply support for 1.5SMC30CH 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 - headquartered in Hsinchu, Taiwan.
The 1.5SMCxxCH series targets high-reliability transient suppression in automotive and industrial applications, engineered specifically to meet AEC-Q101 and ISO 7637-2 requirements with optimized clamping performance and SMT manufacturability.
FAQ
What is the polarity configuration of the 1.5SMC30CH?
The 1.5SMC30CH is a bidirectional TVS diode with symmetrical terminals - no anode/cathode distinction or polarity marking required. This allows flexible PCB placement and eliminates orientation errors during automated assembly. Its electrical behavior is identical in both directions, supporting protection of AC-coupled or floating signal lines without external circuit modification.
Does the 1.5SMC30CH meet automotive qualification standards?
Yes, the 1.5SMC30CH is AEC-Q101 qualified and tested per ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b. It is rated for operation from −55°C to +150°C junction temperature and validated for mechanical shock, humidity, and temperature cycling - making it suitable for under-hood, body control, and infotainment applications without additional qualification.
What is the maximum clamping voltage of the 1.5SMC30CH under surge conditions?
The 1.5SMC30CH has a maximum clamping voltage (VC) of 43.5V at 36A peak impulse current (IPPM), measured using the standard 10/1000μs double-exponential waveform. This value ensures protected downstream components remain below critical voltage thresholds during high-energy transients such as load dump or lightning-induced surges.
How does the 1.5SMC30CH compare to unidirectional TVS diodes like 1.5SMC30H?
The 1.5SMC30CH provides bidirectional clamping, whereas 1.5SMC30H is unidirectional and requires correct polarity orientation. For AC signals, floating buses, or circuits where voltage polarity may reverse (e.g., RS-485, CAN), the 1.5SMC30CH eliminates risk of incorrect installation and ensures protection regardless of transient polarity - unlike 1.5SMC30H which would fail to clamp negative excursions.
What packaging and reel options are available for the 1.5SMC30CH?
The 1.5SMC30CH is supplied in DO-214AB (SMC) package on 3,000-piece tape-and-reel format, compatible with standard SMT pick-and-place equipment. The reel meets EIA-481-D standards, with matte tin-plated leads solderable per J-STD-002, and moisture sensitivity level (MSL) 1 - allowing indefinite floor life without dry-pack or baking prior to reflow.
1.5SMC30CH 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):
- 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)
1.5SMC30CH FAQ
1.How can I place an order for 1.5SMC30CH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC30CH 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 1.5SMC30CH reliable?
The price and inventory of 1.5SMC30CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC30CH is usually 5 days.
3.What payment methods are accepted for 1.5SMC30CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC30CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC30CH?
1.5SMC30CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC30CH 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 1.5SMC30CH?
For technical support, including 1.5SMC30CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC30CH requirements.
6.How does Aetrix verify that 1.5SMC30CH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC30CH 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 1.5SMC30CH meets industry standards.
7.What is the process for return or replacement of 1.5SMC30CH?
All 1.5SMC30CH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC30CH, 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 1.5SMC30CH part is unused and in its original packaging.
Return procedure for 1.5SMC30CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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