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Taiwan Semiconductor Corporation 1KSMB75CA
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- Part No.:
- 1KSMB75CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
1KSMB75CA.pdf
- Description:
- TVS DIODE 64.1VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,074
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Product details
Overview
1KSMB75CA from Taiwan Semiconductor is a bi-directional 1000W transient voltage suppressor (TVS) in DO-214AA (SMB) package, with 71.3V minimum breakdown voltage (VBR), 64.1V stand-off voltage (VWM), and 103V maximum clamping voltage (VC) at 9.7A peak pulse current. It meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive electronics protection and operates from –55°C to +175°C.
For engineers reviewing the 1KSMB75CA datasheet, 1KSMB75CA pinout, 1KSMB75CA application, or 1KSMB75CA equivalent, key selection criteria include bi-directional clamping capability, 1000W peak pulse power rating, 1.0ps response time, RoHS/halogen-free compliance, and suitability for high-energy surge suppression in DC power rails and signal lines.
Technical Context
The 1KSMB75CA uses a glass-passivated silicon junction optimized for fast transient suppression, delivering sub-nanosecond response (<1.0ps from 0 V to VBR min) and stable clamping under repetitive or single-event surges. Its bi-directional configuration enables symmetric protection of AC-coupled or floating signal paths without polarity dependency.
Thermally, it features 20°C/W junction-to-lead (RθJL) and 100°C/W junction-to-ambient (RθJA) resistance, supporting 5W steady-state dissipation at 25°C ambient. The device is rated for 1000W non-repetitive peak impulse power with 10/1000µs waveform and complies with JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V - defines guaranteed avalanche initiation range under 1 mA test current |
| VWM | 64.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC@IPP | 103 V @ 9.7 A - clamped voltage during 10/1000µs surge, limiting downstream stress |
| PPPSM | 1000 W - peak pulse power handling capacity per standardized surge waveform |
| TJ max | +175 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | DO-214AA (SMB) - surface-mount outline with 0.110 g mass and UL 94V-0 molding compound |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking for unidirectional variants; bi-directional 1KSMB75CA has no polarity marking and symmetrical terminal function.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Common surge path terminals | Interchangeable terminals-no polarity; connected across protected line and ground or between differential lines |
| Case | Non-electrical mechanical interface | Plastic body provides insulation and thermal conduction path to PCB copper; no internal connection |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transient immunity (Pulse 1/2a/2b/3a/3b) |
| 1.0ps response time | Enables suppression of ESD and fast-rising transients before sensitive ICs experience overstress |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU directives for environmentally constrained industrial and automotive production |
| J-STD-020 Level 1 MSL | Allows unlimited floor life and reflow compatibility without dry-pack or baking requirements |
Applications
| Automotive Infotainment Power Rails | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs of head units and display modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Bi-directional TVS placed between VIN and GND to clamp surges up to ±103 V while maintaining 64.1 V system operating margin. Use Value: Prevents latch-up or permanent damage to PMICs and microcontrollers during ISO 7637-2 Pulse 5a events. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to inductive kickback. IC Role / Device Role / Timing Role: Bidirectional shunt element across input optocoupler terminals to limit transient voltage to ≤103 V within 1 ps. Use Value: Eliminates need for external series impedance or RC snubbers while preserving signal integrity and response time. |
| AC-DC Adapter Secondary Side | USB-C Power Delivery Line Protection |
Use Scenario: Clamping flyback transformer leakage spikes on secondary-side rectifier outputs in compact adapters. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing 1000 W pulses without degradation, rated for 175°C junction operation. Use Value: Enables smaller heatsinking and higher power density by replacing multi-stage MOV+TVS solutions. | Use Scenario: Protecting CC and VBUS lines in USB-C PD controllers against ESD and hot-swap transients. IC Role / Device Role / Timing Role: Low-capacitance bi-directional suppressor (typ. <100 pF at VWM) minimizing signal distortion on high-speed lines. Use Value: Maintains USB IF compliance while providing >15 kV contact ESD immunity per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA (ON Semiconductor) | Same DO-214AA package; VBR = 78.8–87.0 V, VC = 103 V @ 9.7 A - identical clamping but wider VBR tolerance | Approved for AEC-Q101; preferred where automotive qualification is mandatory | Select SMBJ75CA when AEC-Q101 compliance is required; otherwise 1KSMB75CA offers equivalent surge performance at lower cost |
| P6SMB75CA (Littelfuse) | VBR = 71.3–78.8 V, VC = 103 V @ 9.7 A; same electrical specs but higher RθJA (110°C/W) | Broader global distribution; slightly reduced thermal margin in high-density layouts | Choose P6SMB75CA for logistics continuity; verify board-level thermal relief if ambient exceeds 70°C |
Compared with SMBJ75CA and P6SMB75CA, the 1KSMB75CA delivers identical 1000W/103V clamping performance in DO-214AA, with superior thermal resistance (RθJL = 20°C/W) and J-STD-020 Level 1 moisture rating-making it optimal for high-volume industrial and cost-sensitive automotive Tier 2 designs.
Availability
1KSMB75CA is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC I/O modules, and AC-DC adapter secondary-side protection requiring stable component supply and full traceability.
Supply support for 1KSMB75CA 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, serving industrial, computing, and automotive markets since 1979.
The 1KSMBxxCA series belongs to TSC's high-power surface-mount TVS portfolio, engineered specifically for robust, cost-effective surge immunity in space-constrained DC power and signal interfaces subject to ISO 7637-2 and IEC 61000-4-5 threats.
FAQ
What is the breakdown voltage range for the 1KSMB75CA?
The 1KSMB75CA has a guaranteed breakdown voltage (VBR) range of 71.3 V to 78.8 V at 1 mA test current, measured per ANSI/IEEE C62.35. This range ensures reliable avalanche initiation across manufacturing lots and temperature extremes, supporting consistent clamping behavior in 75 V nominal systems.
Is the 1KSMB75CA unidirectional or bidirectional?
The 1KSMB75CA is a bi-directional TVS diode, indicated by the "CA" suffix per Taiwan Semiconductor's ordering convention. It provides symmetrical clamping for both positive and negative transients without polarity constraints, making it suitable for AC-coupled lines, differential buses, or floating DC rails where voltage reversal may occur.
What is the maximum clamping voltage of the 1KSMB75CA at its rated peak pulse current?
The 1KSMB75CA exhibits a maximum clamping voltage (VC) of 103 V at 9.7 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Does the 1KSMB75CA meet automotive surge immunity standards?
Yes, the 1KSMB75CA meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for automotive electronic components. Its 1000 W peak pulse power rating, fast 1.0 ps response, and 175°C junction rating make it suitable for protecting ECUs, infotainment systems, and body control modules in 12 V and 24 V vehicle architectures.
What packaging and reel quantity is offered for the 1KSMB75CA?
The 1KSMB75CA is supplied in DO-214AA (SMB) package on tape-and-reel format, with 3,000 units per reel. The matte tin-plated leads comply with J-STD-002 solderability standards, and the device carries J-STD-020 Level 1 moisture sensitivity-enabling direct placement without baking or dry-pack handling.
1KSMB75CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- 1KSMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
1KSMB75CA FAQ
1.How can I place an order for 1KSMB75CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1KSMB75CA 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 1KSMB75CA reliable?
The price and inventory of 1KSMB75CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1KSMB75CA is usually 5 days.
3.What payment methods are accepted for 1KSMB75CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1KSMB75CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1KSMB75CA?
1KSMB75CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1KSMB75CA 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 1KSMB75CA?
For technical support, including 1KSMB75CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1KSMB75CA requirements.
6.How does Aetrix verify that 1KSMB75CA is sourced from the original manufacturer or authorized distributors?
All 1KSMB75CA 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 1KSMB75CA meets industry standards.
7.What is the process for return or replacement of 1KSMB75CA?
All 1KSMB75CA units undergo pre-shipment inspection (PSI). If there is an issue with 1KSMB75CA, 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 1KSMB75CA part is unused and in its original packaging.
Return procedure for 1KSMB75CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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