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Taiwan Semiconductor Corporation 1KSMB13AH
- Part No.:
- 1KSMB13AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
1KSMB13AH.pdf
- Description:
- TVS DIODE 11.1VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,215
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Product details
Overview
1KSMB13AH from Taiwan Semiconductor is a unidirectional 1000W surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AA (SMB) package, with breakdown voltage 12.4–13.7 V at 1.0 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 1KSMB13AH datasheet, 1KSMB13AH pinout, 1KSMB13AH application, or 1KSMB13AH equivalent, this device serves as a fast-response (sub-1 ps), glass-passivated, RoHS- and halogen-free TVS for ESD and load-dump transient suppression in automotive lighting, infotainment power rails, and industrial control I/O interfaces.
Technical Context
The 1KSMB13AH operates as a unidirectional avalanche diode, designed to clamp transients above its breakdown threshold while maintaining low leakage (<5 µA at 11.1 V). Its 1000 W peak pulse power rating (10/1000 µs waveform) and 175 °C maximum junction temperature support robust operation under ISO 7637-2 Pulse 1/2a/2b/3a/3b stress conditions.
Thermal performance is defined by RθJL = 20 °C/W and RθJA = 100 °C/W, enabling reliable power dissipation in high-density PCB layouts. The device features matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 12.4 V / 13.7 V at 1.0 mA - defines precise avalanche initiation range for repeatable clamping onset |
| 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 10/1000 µs surge, limiting downstream IC stress |
| PPPSM | 1000 W - peak pulse power handling capacity per standardized transient waveform |
| TJ max | +175 °C - enables operation in under-hood automotive environments without derating |
| Package | DO-214AA (SMB) - surface-mount outline with 0.110 g mass and UL 94V-0 molding compound |
Pinout & Package
DO-214AA (SMB) package: cathode-banded, single-diode unidirectional configuration; body dimensions 4.57 × 3.94 × 2.29 mm; matte tin-plated leads; polarity marked by band on cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to protected circuit ground or low-side reference; carries full surge current during clamping |
| Cathode | Reverse-biased terminal / clamping node | Connected to protected line (e.g., 12 V rail); voltage rises to VC when transient exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD |
| Glass passivated junction | Enhances long-term reliability and moisture resistance vs. epoxy-passivated alternatives |
| Sub-1 ps response time | Clamps ESD events before sensitive logic or analog circuitry sustains damage |
| ISO 7637-2 compliance | Withstands automotive load-dump (Pulse 5a) and coupled transients (Pulses 1, 2a, 2b, 3a, 3b) |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally compliant manufacturing |
Applications
| Automotive Lighting Systems | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and CAN transceivers from load-dump surges and inductive kickback in headlamp modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply rail and ground, clamping transients to ≤18.2 V. Use Value: Prevents latch-up or permanent damage to 24 V-tolerant drivers during ISO 7637-2 Pulse 5a events up to 1000 W. | Use Scenario: Safeguarding digital input terminals of programmable logic controllers against EFT bursts and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC input lines, absorbing 54.9 A pulses without degradation. Use Value: Maintains signal integrity during IEC 61000-4-4 EFT testing (±2 kV, 5 kHz) with <5 µA leakage at 11.1 V. |
| Automotive Infotainment Power Rails | DC Motor Control Feedback Circuits |
Use Scenario: Shielding USB-C PD controllers and audio codecs from battery-line transients during ignition switching. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5 V/12 V power distribution nodes upstream of LDOs and PMICs. Use Value: Limits clamping overshoot to 18.2 V, preserving 20 V absolute maximum ratings of downstream regulators. | Use Scenario: Protecting Hall-effect sensor outputs and encoder lines from commutation noise in brushed DC motor drives. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential feedback paths, minimizing signal distortion during 10/1000 µs surges. Use Value: Delivers sub-1 ps response with no added propagation delay, preserving timing-critical position feedback accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13A | Same DO-214AA package; VBR = 14.4–15.9 V, VC = 21.5 V @ 46.5 A, PPPM = 600 W | Lower peak power rating limits use in high-energy load-dump scenarios | Select SMBJ13A only where system-level surge energy is confirmed ≤600 W |
| 1.5SMC13A | DO-214AB (SMC) package; VBR = 13.7–15.2 V, VC = 21.2 V @ 70.8 A, PPPM = 1500 W | Larger footprint increases PCB area but improves thermal margin for sustained surge duty | Choose 1.5SMC13A when layout allows SMC and higher 1500 W rating is required |
Compared with SMBJ13A and 1.5SMC13A, the 1KSMB13AH delivers optimal balance of 1000 W surge capability, SMB footprint compatibility, and AEC-Q101 qualification-making it preferred for space-constrained automotive modules requiring validated reliability.
Availability
1KSMB13AH is available at Aetrix Electronics and suitable for automotive lighting systems, industrial PLC I/O protection, and DC motor control feedback circuits requiring stable component supply, AEC-Q101 compliance, and consistent 1000 W transient suppression performance.
Supply support for 1KSMB13AH 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 validation capabilities.
The 1KSMB series is engineered specifically for automotive and industrial transient suppression, emphasizing fast response, high surge robustness, and surface-mount manufacturability in DO-214AA packaging.
FAQ
What is the breakdown voltage range of the 1KSMB13AH?
The 1KSMB13AH has a guaranteed breakdown voltage range of 12.4 V to 13.7 V at a test current of 1.0 mA, measured per ANSI/IEEE C62.35 standards. This tight VBR window ensures predictable clamping behavior across production lots and temperature ranges, critical for protecting 12 V automotive electronics without premature conduction.
Is the 1KSMB13AH suitable for bidirectional transient protection?
No-the 1KSMB13AH is unidirectional and intended for DC line protection with defined polarity. For bidirectional applications such as AC signal lines or differential buses, the 1KSMB13CAH variant must be used instead, as indicated by the "CAH" suffix in the ordering code and confirmed in TSC's official documentation.
What is the maximum clamping voltage of the 1KSMB13AH under surge conditions?
The 1KSMB13AH exhibits a maximum clamping voltage of 18.2 V when subjected to a 10/1000 µs surge current of 54.9 A. This value is measured at the device terminals and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events, ensuring compatibility with 20 V-rated ICs.
Does the 1KSMB13AH meet automotive reliability standards?
Yes-the 1KSMB13AH is explicitly qualified to AEC-Q101 Rev D for stress testing including HTGB, HTRB, temperature cycling, and ESD. It also meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity requirements, confirming suitability for under-hood and body-control module applications.
What packaging and reel quantity is offered for the 1KSMB13AH?
The 1KSMB13AH is supplied in DO-214AA (SMB) package on tape-and-reel format, with 3,000 units per reel. The tape complies with EIA-481 standards, and the device features matte tin-plated leads certified to J-STD-002 for automated SMT placement and reflow soldering.
1KSMB13AH 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:
- 1
- Bidirectional Channels:
- -
- 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)
1KSMB13AH FAQ
1.How can I place an order for 1KSMB13AH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1KSMB13AH 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 1KSMB13AH reliable?
The price and inventory of 1KSMB13AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1KSMB13AH is usually 5 days.
3.What payment methods are accepted for 1KSMB13AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1KSMB13AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1KSMB13AH?
1KSMB13AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1KSMB13AH 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 1KSMB13AH?
For technical support, including 1KSMB13AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1KSMB13AH requirements.
6.How does Aetrix verify that 1KSMB13AH is sourced from the original manufacturer or authorized distributors?
All 1KSMB13AH 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 1KSMB13AH meets industry standards.
7.What is the process for return or replacement of 1KSMB13AH?
All 1KSMB13AH units undergo pre-shipment inspection (PSI). If there is an issue with 1KSMB13AH, 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 1KSMB13AH part is unused and in its original packaging.
Return procedure for 1KSMB13AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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