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Taiwan Semiconductor Corporation 1KSMB13CAH
- Part No.:
- 1KSMB13CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
1KSMB13CAH.pdf
- Description:
- TVS DIODE 11.1VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,941
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Product details
Overview
1KSMB13CAH from Taiwan Semiconductor is a bi-directional 1000W transient voltage suppressor (TVS) in DO-214AA (SMB) package, with breakdown voltage 12.4–13.7 V at 1 mA, stand-off voltage 11.1 V, clamping voltage 18.2 V at 54.9 A, and AEC-Q101 qualification for automotive-grade surge protection.
For engineers reviewing the 1KSMB13CAH datasheet, 1KSMB13CAH pinout, 1KSMB13CAH application, or 1KSMB13CAH equivalent, key selection factors include bi-directional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, moisture sensitivity level 1, UL 94V-0 molding compound, and junction temperature range of –55°C to +175°C.
Technical Context
The 1KSMB13CAH uses a glass passivated silicon junction to achieve fast response time (<1.0 ps from 0 V to VBR min) and stable clamping under repetitive transients. Its bi-directional configuration enables symmetric protection against both positive and negative voltage spikes without external polarity management.
Designed for surface-mount automated placement, it delivers 1000 W peak pulse power (10/1000 µs waveform), 5 W steady-state dissipation, and thermal resistance of 20°C/W (junction-to-lead) - enabling reliable operation in high-density PCB layouts with limited heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 12.4 V / 13.7 V at 1 mA - defines precise voltage threshold where avalanche conduction begins in both directions |
| VWM | 11.1 V - maximum continuous reverse operating voltage before leakage exceeds 5 µA |
| VC @ IPP | 18.2 V at 54.9 A - clamped voltage during worst-case 10/1000 µs surge, limiting downstream IC stress |
| PPPSM | 1000 W - peak pulse power handling capacity per standard 10/1000 µs waveform |
| TJ Range | –55°C to +175°C - supports under-hood automotive and industrial environments without derating |
| Package | DO-214AA (SMB) - industry-standard surface-mount outline with 0.110 g mass and J-STD-002 solderability |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking for unidirectional variants; 1KSMB13CAH is bi-directional and marked with code "N10H", no polarity band required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | Both terminals function identically - no polarity dependency; connects across protected line and ground or between differential lines |
| Case | Non-electrical mechanical interface | Plastic body provides insulation, UL 94V-0 flammability rating, and JEDEC-compliant thermal path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD - enables use in ADAS, infotainment, and body control modules |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<5 µA @ VWM) over lifetime and temperature cycling |
| ISO 7637-2 compliance | Withstands defined automotive transient pulses (Pulse 1, 2a, 2b, 3a, 3b) without degradation - eliminates need for additional filtering stages |
| Moisture sensitivity level 1 | Zero floor life limitation - can be stored indefinitely at ≤30°C/60% RH and placed directly into reflow without baking |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus or 12 V supply rails in vehicle door modules from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Bi-directional TVS placed between power rail and chassis ground to clamp transients before they reach MCU or transceiver ICs. Use Value: Limits clamped voltage to 18.2 V during 54.9 A surges, preventing latch-up or oxide damage in 3.3 V/5 V logic interfaces. | Use Scenario: Safeguarding analog front-end inputs of pressure or temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Placed across sensor signal pair (e.g., 4–20 mA loop) to suppress EFT bursts and contact bounce-induced spikes. Use Value: Sub-1 ps response ensures clamping initiates before sensitive op-amps or ADCs experience overvoltage beyond absolute maximum ratings. |
| LED Lighting Driver Protection | ESD-Sensitive Communication Port Protection |
Use Scenario: Shielding constant-current LED drivers in streetlight systems from lightning-induced surges on AC input or DC bus lines. IC Role / Device Role / Timing Role: Mounted at AC/DC converter output to absorb energy from induced transients before reaching MOSFET gate drivers or PWM controllers. Use Value: 1000 W peak power rating handles multi-kV surges while maintaining VC below 18.2 V - preserving driver IC reliability over 10+ year service life. | Use Scenario: Adding robustness to RS-485 or CAN FD physical layer interfaces exposed to field ESD events in building automation networks. IC Role / Device Role / Timing Role: Bi-directional TVS connected between differential pair (A/B) and ground to shunt ±8 kV contact ESD per IEC 61000-4-2. Use Value: Symmetric clamping ensures equal protection for both polarities without bias components - reducing BOM count and layout area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13CA | Same DO-214AA package, identical VBR (12.4–13.7 V), but rated for 600 W PPPM vs. 1000 W | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 or load dump scenarios requiring >600 W | Select 1KSMB13CAH when full 1000 W surge margin is required for automotive or industrial mains-coupled lines. |
| 1.5KE13CA | Through-hole DO-15 package, same VBR and 1000 W rating, but higher RθJA (75°C/W) and no AEC-Q101 qualification | Not suitable for automated SMT assembly or under-hood automotive use due to package and qualification gap | Choose 1KSMB13CAH for surface-mount production, space-constrained designs, and AEC-Q101–mandated applications. |
Compared with SMBJ13CA and 1.5KE13CA, the 1KSMB13CAH uniquely combines 1000 W surge capability, bi-directional DO-214AA packaging, AEC-Q101 qualification, and moisture level 1 - making it the only option meeting full automotive system-level transient immunity and manufacturing requirements simultaneously.
Availability
1KSMB13CAH is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface protection, LED lighting driver protection, and ESD-sensitive communication port protection requiring stable component supply and long-term lifecycle support.
Supply support for 1KSMB13CAH 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–qualified product lines.
The 1KSMBxxCAH series is part of TSC's automotive-grade transient suppression portfolio, engineered specifically for robust, high-reliability protection in harsh electrical environments such as vehicle power nets and industrial control cabinets.
FAQ
What does the "CAH" suffix indicate in 1KSMB13CAH?
The "CAH" suffix in 1KSMB13CAH denotes a bi-directional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike "AH" unidirectional variants, 1KSMB13CAH has no cathode marking and functions identically across both terminals, making it ideal for differential signal lines or AC-coupled circuits where polarity is undefined.
Is 1KSMB13CAH suitable for ISO 7637-2 Pulse 1 testing?
Yes, 1KSMB13CAH meets ISO 7637-2 Pulse 1 (inductive load dump) requirements. With its 1000 W peak pulse power rating and clamping voltage of 18.2 V at 54.9 A, it limits energy delivered to downstream circuitry during the standardized –150 V/0.5 Ω/10 ms transient, satisfying automotive OEM immunity specifications without additional passive filtering.
What is the maximum reverse leakage current for 1KSMB13CAH at its stand-off voltage?
The maximum reverse leakage current for 1KSMB13CAH is 5 µA at its stand-off voltage (VWM) of 11.1 V, measured at 25°C. This low leakage ensures minimal power loss in always-on systems and avoids false triggering in high-impedance sensing nodes - critical for battery-powered automotive modules and precision analog interfaces.
Does 1KSMB13CAH require special handling for moisture sensitivity?
No - 1KSMB13CAH is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it has unlimited floor life at ≤30°C/60% RH and can be mounted directly after removal from dry pack without baking. This simplifies SMT line logistics and eliminates yield loss from moisture-related popcorning during reflow.
How does the thermal performance of 1KSMB13CAH compare to through-hole alternatives?
1KSMB13CAH offers a junction-to-lead thermal resistance (RθJL) of 20°C/W, significantly lower than typical through-hole TVS diodes like 1.5KE13CA (RθJL ≈ 35°C/W). This enables more efficient heat transfer to the PCB copper, supporting higher surge repetition rates and extended operation in compact, thermally constrained automotive ECUs.
1KSMB13CAH 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
1KSMB13CAH FAQ
1.How can I place an order for 1KSMB13CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1KSMB13CAH 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 1KSMB13CAH reliable?
The price and inventory of 1KSMB13CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1KSMB13CAH is usually 5 days.
3.What payment methods are accepted for 1KSMB13CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1KSMB13CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1KSMB13CAH?
1KSMB13CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1KSMB13CAH 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 1KSMB13CAH?
For technical support, including 1KSMB13CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1KSMB13CAH requirements.
6.How does Aetrix verify that 1KSMB13CAH is sourced from the original manufacturer or authorized distributors?
All 1KSMB13CAH 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 1KSMB13CAH meets industry standards.
7.What is the process for return or replacement of 1KSMB13CAH?
All 1KSMB13CAH units undergo pre-shipment inspection (PSI). If there is an issue with 1KSMB13CAH, 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 1KSMB13CAH part is unused and in its original packaging.
Return procedure for 1KSMB13CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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