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Taiwan Semiconductor Corporation 1.5SMC9.1H
- Part No.:
- 1.5SMC9.1H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC9.1H.pdf
- Description:
- 1500W, 9.1V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,830
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Product details
Overview
1.5SMC9.1H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 1500W peak pulse power, 8.19–10.00V breakdown voltage (VBR), and 13.8V clamping voltage (VC) at 50A peak impulse current. It protects automotive and industrial DC power lines against ESD, load dump, and lightning-induced transients.
For engineers reviewing the 1.5SMC9.1H datasheet, 1.5SMC9.1H pinout, 1.5SMC9.1H application, or 1.5SMC9.1H equivalent, this device delivers AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1ps response time, <1μA leakage above 7.37V, and robust thermal performance with RθJA = 50°C/W.
Technical Context
The 1.5SMC9.1H operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR range (8.19–10.00V at 1.0mA test current). Its glass-passivated junction ensures stable breakdown and low leakage (<1μA at 7.37V working stand-off voltage).
Designed for high-energy transient suppression, it sustains 1500W peak pulse power (10/1000μs waveform), clamps to ≤13.8V at 50A IPPM, and maintains operation across –55°C to +150°C junction temperature with 0.068%/°C VBR temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.19V to 10.00V at 1.0mA - defines reliable turn-on threshold for overvoltage protection |
| VWM | 7.37V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 13.8V at 50A - clamped voltage during worst-case surge, limiting stress on downstream ICs |
| PPK | 1500W (10/1000μs) - peak transient energy absorption capability without failure |
| IR @ VWM | <1μA - ultra-low leakage preserves battery life and signal integrity in standby systems |
| TJ max | +150°C - enables use in under-hood automotive and high-temperature industrial environments |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 0.210g mass and J-STD-002 solderability |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, UL 94V-0 flammability rating, and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path in unidirectional clamp configuration |
| Cathode | Transient sensing & clamping terminal | Connected to protected line (e.g., 12V rail); conducts avalanche current to ground when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD HBM/MM |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| Glass-passivated junction | Ensures stable VBR, low leakage drift, and long-term reliability under thermal cycling |
| Fast response time | <1.0ps - reacts before most microsecond-scale transients fully develop, minimizing overshoot |
| Moisture sensitivity level 1 | No floor-life limitation or bake requirement prior to reflow, simplifying SMT manufacturing |
Applications
| Automotive Power Line Protection | Industrial DC Input Stage |
|---|---|
Use Scenario: 12V battery-fed ECUs exposed to load dump (up to 120V) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges before they reach PMIC or MCU. Use Value: Limits voltage to ≤13.8V during 50A transients, preventing latch-up or gate oxide damage in 3.3V/5V logic supplies. |
Use Scenario: 24V PLC I/O modules subject to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Primary transient shunt on field-side power entry, coordinated with upstream fuse and common-mode choke. Use Value: Absorbs 1500W pulses without degradation, maintaining VWM = 7.37V to avoid false triggering during normal 24V operation. |
| Telecom DC Feeds | Consumer Equipment DC Jacks |
Use Scenario: PoE-powered switches with 48V DC inputs vulnerable to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-line protection on primary DC input, upstream of DC-DC converters and Ethernet PHYs. Use Value: Clamps 10/1000μs transients to 13.8V while exhibiting <1μA leakage-critical for low-power sleep modes. |
Use Scenario: USB-C PD adapters and wall chargers with exposed DC output jacks prone to ESD contact discharge. IC Role / Device Role / Timing Role: Secondary-level TVS on secondary-side 5V/9V/15V rails, guarding USB controller and display interface ICs. Use Value: Sub-1ps response prevents ESD-induced latch-up in sensitive analog front-ends, validated per IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Lower PPK = 600W; VBR = 10.0–11.1V; DO-214AA (SMB) package (smaller footprint, higher RθJA) | Not AEC-Q101 qualified; limited to consumer/industrial use; insufficient for ISO 7637-2 Pulse 1 | Select when space-constrained and surge energy ≤600W; verify thermal margin with RθJA = 75°C/W |
| 1.5KE9.1A | Through-hole TO-204AE (DO-41); same VBR/VC but PPK = 1500W; no AEC-Q101 or ISO 7637-2 validation | Requires wave soldering; incompatible with automated SMT lines; unsuitable for automotive vibration environments | Use only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ9.0A and 1.5KE9.1A, the 1.5SMC9.1H uniquely combines AEC-Q101 qualification, ISO 7637-2 compliance, SMT manufacturability, and 1500W capability in DO-214AB-making it the only drop-in solution for production automotive power rail protection.
Availability
1.5SMC9.1H is available at Aetrix Electronics and suitable for automotive control units, industrial programmable logic controllers, telecom power supplies, and consumer charging systems requiring stable component supply and full AEC-Q101 traceability.
Supply support for 1.5SMC9.1H 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, with global distribution and AEC-Q101 process validation.
The 1.5SMC9.1H belongs to TSC's automotive-grade SMC-series TVS family, engineered specifically for robust transient immunity in 12V/24V vehicle subsystems and harsh industrial environments.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC9.1H?
The 1.5SMC9.1H has a specified breakdown voltage range of 8.19V to 10.00V at 1.0mA test current (VBR min/max), corresponding to ±10% nominal 9.1V rating. This tolerance ensures consistent clamping behavior across production lots while accommodating thermal and process variation.
Is the 1.5SMC9.1H suitable for bidirectional transient protection?
No-the 1.5SMC9.1H is unidirectional only, with cathode-band polarity marking. For bidirectional applications, TSC offers the 1.5SMC9.1AH variant (marked DMJ), which provides symmetrical clamping in both polarities and matches the same VBR, VC, and PPK ratings.
Does the 1.5SMC9.1H meet automotive ESD standards beyond AEC-Q101?
Yes-the 1.5SMC9.1H is validated per ISO 7637-2 for automotive transient immunity (Pulse 1, 2a, 2b, 3a, 3b) and supports IEC 61000-4-2 ESD testing up to ±15kV contact discharge when properly laid out, due to its sub-1ps response and low clamping voltage.
What is the maximum steady-state power dissipation for the 1.5SMC9.1H?
The 1.5SMC9.1H has a steady-state power dissipation (PD) rating of 6.5W at TA = 25°C. Derating is required above ambient temperature per Fig.2 in the datasheet, with RθJA = 50°C/W enabling ~4.5W at 70°C ambient in typical PCB layouts.
How does the 1.5SMC9.1H compare to the 1.5SMC9.1AH in terms of leakage current?
Both the 1.5SMC9.1H and 1.5SMC9.1AH specify maximum blocking leakage current (IR) of 1μA at their respective VWM (7.37V and 7.78V). The 1.5SMC9.1AH's slightly higher VWM yields marginally lower leakage in practice, but both meet the same <1μA design target for low-power systems.
1.5SMC9.1H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.37V
- Voltage - Breakdown (Min):
- 8.19V
- Voltage - Clamping (Max) @ Ipp:
- 13.8V
- Current - Peak Pulse (10/1000µs):
- 114A
- 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)
1.5SMC9.1H FAQ
1.How can I place an order for 1.5SMC9.1H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC9.1H 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 1.5SMC9.1H reliable?
The price and inventory of 1.5SMC9.1H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC9.1H is usually 5 days.
3.What payment methods are accepted for 1.5SMC9.1H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC9.1H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC9.1H?
1.5SMC9.1H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC9.1H 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 1.5SMC9.1H?
For technical support, including 1.5SMC9.1H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC9.1H requirements.
6.How does Aetrix verify that 1.5SMC9.1H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC9.1H 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 1.5SMC9.1H meets industry standards.
7.What is the process for return or replacement of 1.5SMC9.1H?
All 1.5SMC9.1H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC9.1H, 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 1.5SMC9.1H part is unused and in its original packaging.
Return procedure for 1.5SMC9.1H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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