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Taiwan Semiconductor Corporation 1.5SMC15H
- Part No.:
- 1.5SMC15H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15H.pdf
- Description:
- 1500W, 15V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,966
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Product details
Overview
1.5SMC15H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 13.5–16.5 V breakdown voltage (VBR), 12.1 V working stand-off voltage (VWM), 22.0 V maximum clamping voltage (VC) at 71 A peak pulse current, and 1500 W peak pulse power rating per 10/1000 µs waveform - deployed in automotive body control modules to safeguard CAN transceivers against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5SMC15H datasheet, 1.5SMC15H pinout, 1.5SMC15H application, or 1.5SMC15H equivalent, this page delivers verified electrical parameters, DO-214AB package details, AEC-Q101 qualification status, clamping performance under standardized surge waveforms, and direct alternatives with documented parameter divergence for ESD and load-dump protection design.
Technical Context
The 1.5SMC15H operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1.0 ps) to transient events while maintaining low leakage (<1 µA at 12.1 V). Its thermal resistance profile (RθJA = 50 °C/W, RθJC = 15 °C/W) supports sustained operation up to TJ = +150 °C in compact SMC packages.
It meets ISO 7637-2 for automotive load-dump and inductive-switching immunity, with clamping validated at IPPM = 71 A (10/1000 µs) delivering VC ≤ 22.0 V - enabling robust protection of 12 V nominal systems without compromising downstream IC voltage tolerances.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 13.5 V / 16.5 V - defines guaranteed avalanche initiation range under 1.0 mA test current; ensures reliable turn-on before system damage threshold |
| VWM | 12.1 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR min |
| VC @ IPPM | 22.0 V at 71 A - clamped voltage during 10/1000 µs surge; determines protected circuit's peak stress level |
| PPK | 1500 W - peak pulse power handling per single 10/1000 µs event; enables survivability against severe automotive transients |
| IR @ VWM | <1 µA - ultra-low reverse leakage at stand-off voltage; minimizes standby power loss in battery-critical systems |
| TJ max | +150 °C - maximum junction temperature; supports under-hood deployment with standard PCB copper pour and airflow |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Case meets UL 94V-0; matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected line (e.g., 12 V rail); conducts surge current toward ground when VBR exceeded |
| Cathode | Ground reference | Connected to system ground plane; establishes polarity-sensitive clamping path; marked by band on package |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock - required for under-hood ECUs |
| Clamping voltage ≤22.0 V | Ensures protected 12 V logic interfaces (e.g., microcontroller I/O, CAN PHY) remain within absolute maximum ratings during ISO 7637-2 Pulse 5a |
| Response time <1.0 ps | Fast enough to suppress ESD events (IEC 61000-4-2) before sensitive CMOS inputs latch-up or fail |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly without floor-life constraints |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports green manufacturing and end-of-life recycling |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects 12 V supply input of BCM against load dump (ISO 7637-2 Pulse 5a) and alternator switching transients. IC Role / Device Role: Primary overvoltage clamp placed upstream of DC-DC converter and MCU power domain. Use Value: Limits rail voltage to ≤22.0 V during 1500 W surges, preventing brownout reset or regulator failure in safety-critical lighting and door control functions. |
Use Scenario: Shields 24 V digital input channel from field-wiring induced surges (IEC 61000-4-4/5) in factory automation cabinets. IC Role / Device Role: Front-end TVS on optocoupler input stage, absorbing repetitive 1 kV/50 Ω ringwave transients. Use Value: Maintains <1 µA leakage at 20 V stand-off, ensuring stable opto-isolator bias and eliminating false triggering in noisy plant environments. |
| Telecom Power Feeding Interface | Consumer USB-C Power Delivery Port |
Use Scenario: Guards PoE+ (IEEE 802.3at) 57 V feed line against lightning-induced surges on outdoor telecom equipment. IC Role / Device Role: Secondary protection device after gas discharge tube (GDT), providing low-clamp refinement. Use Value: Delivers 22.0 V clamping at 71 A - sufficient to protect downstream DC-DC controllers rated for 24 V input without derating. |
Use Scenario: Suppresses ESD (±15 kV contact) and hot-swap transients on VBUS line of USB-C receptacle in portable monitors. IC Role / Device Role: Fast-response TVS placed adjacent to connector, before USB PD controller and buck converter. Use Value: Sub-1 ps response captures ESD before propagation; 12.1 V VWM allows full 5–20 V PD negotiation range without leakage interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | 600 W rating (vs. 1500 W); VC = 24.4 V at 24.5 A; DO-214AA package (smaller footprint) | Lower power handling limits use to non-automotive, low-energy signal lines only | Select SMBJ15A only where surge energy is limited to <100 mJ and board space is constrained |
| 1.5KE15A | Through-hole TO-204AA (DO-41); same 15 V VBR but VC = 23.2 V at 64.5 A; 1500 W rating retained | Requires PTH assembly; unsuitable for high-density SMT layouts or automated placement | Choose 1.5KE15A only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ15A and 1.5KE15A, the 1.5SMC15H uniquely combines AEC-Q101 qualification, 1500 W SMT capability, and 22.0 V clamping - making it the only option qualified for production automotive 12 V rail protection without layout or reliability compromise.
Availability
1.5SMC15H is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5SMC15H 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, MOSFETs, and automotive-qualified components.
The 1.5SMC series was engineered specifically for AEC-Q101-compliant, high-power transient suppression in 12 V/24 V automotive and industrial systems - emphasizing low clamping, fast response, and robust thermal performance in the DO-214AB package.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC15H?
The 1.5SMC15H has a specified breakdown voltage range of 13.5 V to 16.5 V at 1.0 mA test current (VBR min/max), corresponding to ±10% tolerance around the nominal 15 V rating. This tolerance is measured per ANSI/IEEE C62.35 and ensures consistent clamping behavior across production lots without requiring binning for most 12 V system protections.
Is the 1.5SMC15H suitable for bidirectional transient protection?
No, the 1.5SMC15H is a unidirectional TVS diode intended for DC rail protection with defined anode/cathode polarity. For bidirectional applications such as AC lines or data bus protection, Taiwan Semiconductor specifies the 1.5SMC15AH variant (marked DXJ), which provides symmetrical clamping in both directions and shares identical VBR, VC, and PPK ratings.
Does the 1.5SMC15H require derating at elevated ambient temperatures?
Yes, the 1.5SMC15H must be derated above 25 °C ambient per its pulse derating curve (Fig.2 in datasheet). At 85 °C ambient, its 1500 W peak pulse power rating reduces to approximately 900 W; at 125 °C, it falls to ~500 W. Designers must verify worst-case surge energy against derated PPK using actual board thermal conditions.
What is the maximum leakage current of the 1.5SMC15H at its working voltage?
The 1.5SMC15H exhibits a maximum blocking leakage current (IR) of 1 µA at its rated working stand-off voltage of 12.1 V (VWM). This ultra-low leakage is confirmed per test condition in the Electrical Specifications table and remains stable across -55 °C to +125 °C, critical for battery-powered or low-quiescent-current systems.
How does the 1.5SMC15H meet ISO 7637-2 compliance?
The 1.5SMC15H meets ISO 7637-2 Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) requirements through validated clamping performance: at 71 A (10/1000 µs), it limits voltage to ≤22.0 V - well below typical 12 V system IC damage thresholds (e.g., 30 V absolute max). Its <1.0 ps response ensures no overshoot beyond VC.
1.5SMC15H 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):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 71A
- 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)
1.5SMC15H FAQ
1.How can I place an order for 1.5SMC15H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15H 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 1.5SMC15H reliable?
The price and inventory of 1.5SMC15H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC15H is usually 5 days.
3.What payment methods are accepted for 1.5SMC15H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15H?
1.5SMC15H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15H 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 1.5SMC15H?
For technical support, including 1.5SMC15H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15H requirements.
6.How does Aetrix verify that 1.5SMC15H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15H 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 1.5SMC15H meets industry standards.
7.What is the process for return or replacement of 1.5SMC15H?
All 1.5SMC15H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15H, 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 1.5SMC15H part is unused and in its original packaging.
Return procedure for 1.5SMC15H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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