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Taiwan Semiconductor Corporation 1.5SMC11H
- Part No.:
- 1.5SMC11H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11H.pdf
- Description:
- 1500W, 11V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:3,716
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Product details
Overview
1.5SMC11H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust electrostatic discharge (ESD) and surge protection in DC power rails and signal lines. It features a 9.9–12.1 V breakdown voltage (VBR), 8.92 V working stand-off voltage (VWM), 16.2 V maximum clamping voltage (VC) at 97 A peak pulse current, and 1500 W peak pulse power rating per 10/1000 µs waveform - deployed in telecom interfaces, automotive body control modules, and industrial I/O protection.
For engineers reviewing the 1.5SMC11H datasheet, 1.5SMC11H pinout, 1.5SMC11H application, or 1.5SMC11H equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, leakage current ≤1 µA at 8.92 V, AEC-Q101 qualification, and DO-214AB (SMC) package compatibility with automated SMT assembly.
Technical Context
The 1.5SMC11H operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to deliver sub-1 ps response time and stable clamping during fast transients. Its single-die configuration ensures consistent bidirectional blocking behavior in reverse bias and low forward voltage drop (3.5 V @ 50 A) only when used in unidirectional mode.
Thermal design is supported by RθJA = 50 °C/W and RθJC = 15 °C/W, enabling reliable operation up to TJ = 150 °C. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - confirming suitability for high-reliability reflow processes without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 9.9 V / 12.1 V - defines guaranteed avalanche initiation range at 1 mA test current; ensures predictable turn-on before system damage |
| VWM | 8.92 V - maximum continuous reverse operating voltage; must exceed normal circuit operating voltage to prevent leakage-induced power loss |
| VC @ IPPM | 16.2 V at 97 A - clamped voltage during 10/1000 µs surge; determines protected IC's maximum stress level |
| PPK | 1500 W - peak pulse power handling per single transient; supports compliance with ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 2b (battery disconnect) |
| IR @ VWM | <1 µA - ultra-low reverse leakage at rated stand-off voltage; critical for low-power sensor and battery-backed circuits |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 7.11 mm × 6.22 mm footprint and 2.62 mm height; compatible with IPC-7351B SMC_STD land pattern |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band. Weight ≈ 0.210 g. Meets UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during positive surges when used in unidirectional configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 12 V rail); initiates avalanche breakdown above VWM to shunt surge energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for body electronics and infotainment power inputs |
| Clamping voltage ≤16.2 V @ 97 A | Ensures downstream 16 V-rated ICs (e.g., CAN transceivers, microcontrollers) remain within absolute maximum ratings during ISO 7637-2 transients |
| Response time <1 ps | Fast enough to suppress ESD events (IEC 61000-4-2) before propagation into sensitive analog front-ends or data lines |
| Moisture sensitivity level 1 | Zero floor life limitation - can be mounted directly from reel without baking, reducing manufacturing overhead and moisture-related delamination risk |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - required for export to EU, China, and Korea markets |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 12 V supply rail of BCM microcontroller against load dump and alternator ripple transients per ISO 7637-2 Pulse 2b and Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND, clamping surges before they reach LDO regulators and MCU VCC. Use Value: Limits peak rail voltage to ≤16.2 V, preventing brownout reset or latch-up in 16 V-tolerant MCUs while sustaining 1500 W surge energy. |
Use Scenario: Shields 24 V digital input channel of programmable logic controller against field-wiring induced surges and ESD from operator contact. IC Role / Device Role / Timing Role: Standoff device installed at connector entry point, conducting only during >8.92 V transients to divert energy away from optocoupler input stage. Use Value: Delivers <1 µA leakage at 24 V nominal, preserving input threshold accuracy; clamps to 16.2 V to protect 5 V logic-level opto-ICs via series resistor. |
| Telecom Ethernet PHY Port Protection | Consumer Appliance Motor Drive Power Stage |
Use Scenario: Safeguards 3.3 V or 5 V bias rail feeding Ethernet PHY chip from ESD coupling through magnetics or chassis ground bounce. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on PHY VDDIO rail, positioned after bulk capacitor to avoid false triggering during normal switching noise. Use Value: Sub-1 ps response captures nanosecond ESD pulses (IEC 61000-4-2 ±8 kV contact); 16.2 V clamping prevents PHY core damage without affecting link training timing. |
Use Scenario: Suppresses inductive kickback from brushed DC motor commutation in washing machine or HVAC blower drive circuits. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge high-side FET drain-source, absorbing flyback energy during PWM turn-off. Use Value: 1500 W rating handles repetitive 100 A+ spikes; 3.5 V forward voltage minimizes conduction loss during freewheeling, improving thermal efficiency vs. standard rectifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A | 600 W peak power, DO-214AA (SMB) package, 17.0 V clamping at 53 A | Lower surge capacity; suited for less severe environments (e.g., consumer USB ports) | Select SMBJ11A only if board space constraints require smaller SMB footprint and surge threat level is limited to IEC 61000-4-5 Level 3 (0.5 kV) |
| 1.5KE11A | Through-hole TO-204AA (DO-41), 1500 W, 17.0 V clamping at 88 A, slower response (~1 ns) | Not SMT-compatible; requires wave solder or hand assembly; higher inductance limits ESD effectiveness | Choose 1.5KE11A only for legacy through-hole designs where rework cost outweighs performance trade-offs in clamping speed and leakage |
Compared with SMBJ11A and 1.5KE11A, the 1.5SMC11H delivers superior surge margin (1500 W vs. 600 W), tighter clamping (16.2 V vs. 17.0 V), and AEC-Q101 qualification - making it the preferred choice for new automotive and industrial SMT designs requiring long-term reliability and high-energy transient immunity.
Availability
1.5SMC11H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, telecom PHY power rails, and appliance motor drive protection requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC11H 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, with ISO/TS 16949 and ISO 14001 certification.
The 1.5SMCxxH series was engineered specifically for high-reliability surface-mount surge suppression in automotive and industrial environments, emphasizing AEC-Q101 compliance, low leakage, and repeatable clamping performance across temperature and lifetime.
FAQ
What is the maximum clamping voltage of the 1.5SMC11H under standard 10/1000 µs surge conditions?
The 1.5SMC11H has a maximum clamping voltage (VC) of 16.2 V at 97 A peak pulse current (IPPM) under the standardized 10/1000 µs double-exponential waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry will not experience voltages exceeding 16.2 V during worst-case transients - critical for safeguarding 16 V-tolerant ICs in automotive and industrial systems. The 1.5SMC11H maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C).
Is the 1.5SMC11H suitable for bidirectional transient protection?
No, the 1.5SMC11H is a unidirectional TVS diode and is not rated for bidirectional operation. For symmetrical surge protection (e.g., AC lines or differential data buses), Taiwan Semiconductor specifies the 1.5SMC11AH variant - which carries the "A" suffix and supports identical voltage ratings in both directions. Using the 1.5SMC11H in reverse-biased configurations may result in premature failure or undefined clamping behavior. Always verify polarity marking (cathode band) during PCB layout for the 1.5SMC11H.
Does the 1.5SMC11H meet automotive qualification standards?
Yes, the 1.5SMC11H is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD (HBM ≥8 kV, CDM ≥1 kV). It also complies with ISO 7637-2 for automotive transient immunity (Pulse 1, 2a, 2b, 3a, 3b) and meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 - confirming readiness for under-hood and chassis-mounted applications. The 1.5SMC11H is explicitly listed in TSC's AEC-Q101 certified product portfolio.
What is the leakage current specification for the 1.5SMC11H at its working stand-off voltage?
The 1.5SMC11H exhibits a maximum reverse leakage current (IR) of 1 µA when biased at its working stand-off voltage (VWM) of 8.92 V, tested at TA = 25 °C. This ultra-low leakage ensures minimal power loss in always-on circuits such as battery-backed sensors or low-quiescent-current microcontrollers. The specification holds across the full industrial temperature range (−40 °C to +125 °C), with typical leakage remaining below 0.5 µA at room temperature - verified in TSC's production lot testing per JEDEC JESD22-A114.
Can the 1.5SMC11H be used in place of the older 1.5KE11A in new designs?
Yes, the 1.5SMC11H serves as a direct surface-mount upgrade to the through-hole 1.5KE11A, offering identical 1500 W surge rating and comparable clamping (16.2 V vs. 17.0 V), but with faster response (<1 ps vs. ~1 ns), lower profile (DO-214AB vs. DO-41), and AEC-Q101 qualification. However, PCB layout must be revised to accommodate the SMC footprint and reflow profile - the 1.5SMC11H cannot be substituted without board revision. For new SMT designs, the 1.5SMC11H is strongly preferred over the 1.5KE11A due to manufacturability and performance advantages.
1.5SMC11H 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):
- 8.92V
- Voltage - Breakdown (Min):
- 9.9V
- Voltage - Clamping (Max) @ Ipp:
- 16.2V
- Current - Peak Pulse (10/1000µs):
- 97A
- 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)
1.5SMC11H FAQ
1.How can I place an order for 1.5SMC11H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11H 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 1.5SMC11H reliable?
The price and inventory of 1.5SMC11H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC11H is usually 5 days.
3.What payment methods are accepted for 1.5SMC11H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11H?
1.5SMC11H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11H 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 1.5SMC11H?
For technical support, including 1.5SMC11H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11H requirements.
6.How does Aetrix verify that 1.5SMC11H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11H 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 1.5SMC11H meets industry standards.
7.What is the process for return or replacement of 1.5SMC11H?
All 1.5SMC11H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11H, 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 1.5SMC11H part is unused and in its original packaging.
Return procedure for 1.5SMC11H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC11H Tags
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