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Taiwan Semiconductor Corporation 1KSMB13CA
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- Part No.:
- 1KSMB13CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
1KSMB13CA.pdf
- Description:
- TVS DIODE 11.1VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,638
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Product details
Overview
1KSMB13CA from Taiwan Semiconductor is a bidirectional 1000W transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage 12.4–13.7 V at 1 mA, stand-off voltage 11.1 V, maximum clamping voltage 18.2 V at 54.9 A, and operating junction temperature range −55 °C to +175 °C. It protects DC power rails in switching mode power supplies and consumer displays against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1KSMB13CA datasheet, 1KSMB13CA pinout, 1KSMB13CA application, or 1KSMB13CA equivalent, key selection criteria include bidirectional clamping capability, 1000W peak pulse power rating, 18.2 V clamping voltage at 54.9 A, DO-214AA mechanical compatibility, and compliance with J-STD-020 moisture sensitivity level 1.
Technical Context
The 1KSMB13CA uses a glass-passivated silicon junction optimized for fast transient response (<1.0 ps from 0 V to VBR(min)) and robust clamping under 10/1000 µs surge waveforms. Its bidirectional configuration enables symmetric protection of AC-coupled or floating signal lines without polarity dependency.
Thermal performance is defined by RθJL = 20 °C/W and RθJA = 100 °C/W, supporting operation up to 175 °C junction temperature. It meets ISO 7637-2 for automotive transient immunity and complies with RoHS and halogen-free standards per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 12.4 V / 13.7 V at 1 mA - defines minimum and maximum guaranteed breakdown threshold for reliable overvoltage triggering |
| VWM | 11.1 V - maximum continuous reverse working voltage before leakage exceeds 5 µA; sets safe DC rail margin |
| VC@IPP | 18.2 V at 54.9 A - clamping voltage during 10/1000 µs surge; determines protected circuit's peak stress level |
| PPPSM | 1000 W - peak pulse power handling per 10/1000 µs waveform; defines transient energy absorption capacity |
| TJ max | +175 °C - maximum junction temperature; enables high-ambient operation in enclosed power adapters or SMPS |
| Package | DO-214AA (SMB) - surface-mount outline with 0.110 g mass, UL 94V-0 molding, and matte tin-plated leads |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking; dual-leaded, symmetrical bidirectional device - no anode/cathode distinction required for CA-suffix parts. Leads are matte tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked side) | Transient return path (bidirectional) | Functions identically as cathode under reverse surge; polarity marking denotes cathode for unidirectional variants only - irrelevant for 1KSMB13CA |
| Cathode (marked side) | Transient return path (bidirectional) | Same electrical role as anode terminal; bidirectional symmetry means both terminals clamp equally in either direction |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| Fast response time <1.0 ps | Clamps ESD and fast transients before downstream ICs experience damaging voltage overshoot |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive-level load dump and inductive switching immunity without external filtering |
| J-STD-020 moisture sensitivity level 1 | Enables standard SMT reflow without baking or special handling - reduces manufacturing cost and risk |
| Halogen-free & RoHS compliant | Meets global environmental regulations and supports lead-free assembly with no brominated flame retardants |
Applications
| Switching Mode Power Supply (SMPS) | Consumer Display Monitor |
|---|---|
Use Scenario: Protects 12 V DC input stage of open-frame SMPS against load dump and inductive kickback from nearby relays or motors. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed across input terminals to clamp ±18.2 V surges while maintaining 11.1 V stand-off. Use Value: Prevents MOSFET gate oxide failure and controller latch-up by limiting transient voltage to safe levels below IC absolute maximum ratings. | Use Scenario: Shields LVDS or HDMI power rails in flat-panel monitors from ESD events during handling and cable hot-plug. IC Role / Device Role / Timing Role: Standoff-clamp protector on 5 V or 12 V bias rails, leveraging sub-1 ps response to suppress nanosecond-scale discharges. Use Value: Eliminates need for additional RC filters or ferrites by absorbing >1000 W transient energy within 10/1000 µs window. |
| AC-DC Adapter | Industrial Control Panel |
Use Scenario: Mounted across primary-side rectifier output in universal-input wall adapters to suppress line-to-line surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Bidirectional clamping element rated for 1000 W peak power, directly replacing bulkier MOVs in space-constrained designs. Use Value: Reduces PCB area by 40% vs. radial-leaded alternatives while maintaining full surge immunity certification. | Use Scenario: Protects 24 V PLC I/O module inputs from field-wiring induced transients in factory automation environments. IC Role / Device Role / Timing Role: Robust front-end protection device with −55 °C to +175 °C operating range and JESD201 Class 2 whisker resistance. Use Value: Ensures uninterrupted operation in uncontrolled ambient conditions where thermal cycling and vibration degrade conventional protectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13CA (Bourns) | Same DO-214AA package, 13 V nominal VBR, 18.2 V VC @ 55 A, but higher RθJA = 110 °C/W | Marginally lower thermal efficiency in high-density layouts; identical ISO 7637-2 coverage | Preferred when Bourns supply chain alignment or legacy design reuse is required |
| P6SMB13CA (ON Semiconductor) | Identical VBR/VC/PPPSM specs, same SMB package, but moisture sensitivity level 2 (requires baking) | Requires pre-reflow baking per J-STD-020; otherwise drop-in compatible in layout and function | Select when ON Semi qualification or long-term lifecycle commitment is prioritized over handling simplicity |
Compared with SMBJ13CA and P6SMB13CA, the 1KSMB13CA offers superior thermal resistance (RθJA = 100 °C/W), eliminates baking requirements (MSL 1), and maintains identical clamping performance - making it optimal for high-volume, thermally constrained, or lean-manufacturing environments.
Availability
1KSMB13CA is available at Aetrix Electronics and suitable for switching mode power supplies, consumer display monitors, and industrial control panels requiring stable component supply, consistent MSL-1 handling, and certified ISO 7637-2 transient immunity.
Supply support for 1KSMB13CA 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 global power management and protection markets since 1979.
The 1KSMB series is part of TSC's high-reliability TVS portfolio designed specifically for automotive-grade and industrial-grade DC power rail protection, emphasizing fast response, repeatable clamping, and robust packaging for automated SMT deployment.
FAQ
What is the maximum clamping voltage of the 1KSMB13CA under a 10/1000 µs surge?
The 1KSMB13CA has a maximum clamping voltage (VC) of 18.2 V when subjected to a 54.9 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry remains below critical overvoltage thresholds during standardized transient events.
Is the 1KSMB13CA suitable for automotive applications?
Yes, the 1KSMB13CA meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for 12 V automotive subsystems such as infotainment power supplies and body control modules. Its −55 °C to +175 °C junction temperature range and MSL-1 rating further support under-hood and dashboard deployment.
Does the 1KSMB13CA require special handling before reflow soldering?
No, the 1KSMB13CA is rated at moisture sensitivity level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30 °C/60% RH and processed through standard lead-free reflow profiles without baking or dry-pack requirements - simplifying SMT line logistics.
How does the bidirectional configuration of the 1KSMB13CA affect its circuit placement?
The 1KSMB13CA's bidirectional design allows placement across any two nodes requiring symmetric overvoltage protection - such as AC-coupled data lines or floating DC rails - without regard to polarity. Unlike unidirectional variants (e.g., 1KSMB13A), it requires no orientation check during placement, reducing assembly errors.
What is the standoff voltage (VWM) of the 1KSMB13CA, and why does it matter?
The 1KSMB13CA has a standoff voltage (VWM) of 11.1 V, which is the maximum continuous reverse voltage it can block without exceeding 5 µA leakage. This parameter ensures reliable operation on 12 V systems where normal operating voltage must remain safely below the clamping threshold while allowing sufficient margin for ripple and tolerance.
1KSMB13CA 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):
- 11.1V
- Voltage - Breakdown (Min):
- 12.4V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 54.9A
- 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)
1KSMB13CA FAQ
1.How can I place an order for 1KSMB13CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1KSMB13CA 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 1KSMB13CA reliable?
The price and inventory of 1KSMB13CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1KSMB13CA is usually 5 days.
3.What payment methods are accepted for 1KSMB13CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1KSMB13CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1KSMB13CA?
1KSMB13CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1KSMB13CA 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 1KSMB13CA?
For technical support, including 1KSMB13CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1KSMB13CA requirements.
6.How does Aetrix verify that 1KSMB13CA is sourced from the original manufacturer or authorized distributors?
All 1KSMB13CA 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 1KSMB13CA meets industry standards.
7.What is the process for return or replacement of 1KSMB13CA?
All 1KSMB13CA units undergo pre-shipment inspection (PSI). If there is an issue with 1KSMB13CA, 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 1KSMB13CA part is unused and in its original packaging.
Return procedure for 1KSMB13CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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