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Taiwan Semiconductor Corporation SMB10J17AH
- Part No.:
- SMB10J17AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J17AH.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,617
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Product details
Overview
SMB10J17AH from Taiwan Semiconductor is a unidirectional 1000W transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with 17V standoff voltage (VWM), 18.9–20.9V breakdown voltage (VBR @ 1mA), 27.6V clamping voltage (VC @ 36.2A), and AEC-Q101 qualification for automotive-grade surge protection in power supply rails and interface lines.
For engineers reviewing the SMB10J17AH datasheet, SMB10J17AH pinout, SMB10J17AH application, or SMB10J17AH equivalent, key selection criteria include clamping performance at 36.2A peak pulse current, thermal resistance (RθJL = 20°C/W), ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and unidirectional polarity marking for correct PCB orientation.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents <1µA leakage at 17V, but triggers avalanche conduction when transients exceed ~18.9V, limiting downstream voltage to ≤27.6V at 36.2A (10/1000µs waveform). Its glass-passivated junction ensures stable VBR tolerance and long-term reliability.
Designed for surface-mount automated assembly, the device uses matte tin-plated leads compliant with J-STD-002 solderability and meets JESD201 Class 2 whisker resistance. Junction temperature range is –55°C to +175°C, supporting under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VBR @ IT=1mA | 18.9–20.9 V - Avalanche breakdown threshold defining turn-on sensitivity |
| VC @ IPPM=36.2A | 27.6 V - Clamped voltage during 10/1000µs transient, limiting stress on protected ICs |
| PPK | 1000 W - Peak pulse power handling per single non-repetitive 1ms event |
| RθJL | 20 °C/W - Thermal resistance from junction to lead, critical for PCB copper pour design |
| TJ max | +175 °C - Maximum junction temperature enabling operation in high-ambient automotive locations |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking; 2-terminal unidirectional configuration; dimensions per JEDEC DO-214AA standard; weight ≈0.110 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path during clamping |
| Cathode | High-side transient input terminal | Marked by band; connects to protected line (e.g., 12V rail, CAN-H); reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD |
| Clamping voltage ≤27.6V @ 36.2A | Ensures logic-level ICs (e.g., MCU I/O, LIN transceivers) remain within absolute maximum ratings during load dump |
| Fast response time <1.0 ps | Sub-nanosecond junction response enables protection against EFT bursts and fast-rising ESD events |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Meets full suite of automotive transient immunity standards for battery-supplied systems |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery line in engine control unit exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Shunt clamping element placed between VBAT and GND, triggered within picoseconds to clamp voltage spikes to ≤27.6V. Use Value: Prevents overvoltage damage to 3.3V/5V LDOs and microcontroller power domains without requiring series impedance. | Use Scenario: 4–20mA current loop transmitter connected to field sensors in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional transient suppression not required; unidirectional SMB10J17AH protects loop supply side against induced surges from nearby motor switching. Use Value: Maintains signal integrity by limiting transients to <27.6V while adding <1µA leakage at 17V nominal loop voltage. |
| LED Lighting Driver Protection | Automotive LIN Bus Line Protection |
Use Scenario: Constant-current LED driver IC powered from 24V truck battery system subject to cranking transients. IC Role / Device Role / Timing Role: Placed across driver input capacitor to absorb energy from 1000W pulses without thermal runaway. Use Value: Enables use of smaller input bulk capacitors due to predictable 27.6V clamping ceiling and 20°C/W thermal path to PCB copper. | Use Scenario: LIN transceiver (e.g., TJA1020) data line exposed to ESD and coupled noise in door module wiring harnesses. IC Role / Device Role / Timing Role: Unidirectional TVS tied between LIN bus and chassis ground, leveraging fast <1ps response to suppress EFT bursts per ISO 11452-4. Use Value: Preserves LIN signal edge integrity (≤20 kbps) with minimal capacitance (<100 pF typical), avoiding timing skew or false dominant detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17A | Same DO-214AA package, identical VWM/VBR/VC specs, but not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial only | Select SMBJ17A only if AEC-Q101 is not required and cost optimization is prioritized |
| P6SMB17A | Identical electrical specs and DO-214AA footprint; RoHS-compliant but halogen-free status not documented | No explicit ISO 7637-2 or AEC-Q101 validation; limited automotive reference data | Prefer SMB10J17AH where automotive compliance documentation and halogen-free certification are mandatory |
Compared with SMBJ17A and P6SMB17A, SMB10J17AH provides verified AEC-Q101 qualification, documented ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity, and IEC 61249-2-21 halogen-free compliance-making it the only choice for Tier 1 automotive power rail designs requiring full audit traceability.
Availability
SMB10J17AH is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED lighting driver surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMB10J17AH 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 automotive, industrial, and consumer markets since 1979.
The SMB10JxxAH series belongs to TSC's AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient immunity in 12V/24V automotive subsystems-including body electronics, lighting, and powertrain interfaces-where reliability under harsh thermal and electrical stress is mandatory.
FAQ
What is the maximum clamping voltage of SMB10J17AH at its rated peak pulse current?
The SMB10J17AH has a maximum clamping voltage (VC) of 27.6 V when subjected to its specified peak pulse current (IPPM) of 36.2 A under the 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that protected downstream circuitry remains below critical overvoltage thresholds during standardized surge events. The SMB10J17AH achieves this clamping performance while maintaining low leakage (<1 µA) at its 17 V standoff voltage.
Is SMB10J17AH suitable for bidirectional transient protection?
No, SMB10J17AH is a unidirectional TVS diode intended for DC-biased lines such as positive power rails. For bidirectional protection (e.g., AC signal lines or differential buses), the complementary part SMB10J17CAH must be used. The "AH" suffix explicitly denotes unidirectional configuration with cathode band marking, and using SMB10J17AH on bidirectional signals may result in forward conduction and failure during negative transients.
Does SMB10J17AH meet automotive qualification standards?
Yes, SMB10J17AH is fully AEC-Q101 qualified and tested per the full stress test schedule, including high-temperature operating life, temperature cycling, and ESD. It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for automotive electrical transient immunity. These qualifications are documented in Taiwan Semiconductor's official A2102 revision datasheet and supported by traceable test reports available upon request for SMB10J17AH.
What is the thermal resistance from junction to lead (RθJL) for SMB10J17AH?
The junction-to-lead thermal resistance (RθJL) of SMB10J17AH is 20°C/W, as specified in the Thermal Performance section of the datasheet. This parameter reflects heat transfer efficiency from the silicon die to the PCB copper via the leads and is critical for calculating safe power derating above 25°C ambient. At 1000 W peak power, this RθJL enables effective short-duration energy dissipation when mounted on adequate copper area.
How is polarity identified on the SMB10J17AH package?
Polarity is marked on the SMB10J17AH DO-214AA (SMB) package by a distinct cathode band located near one end of the molded body. This band corresponds to the cathode terminal, which must be connected to the line being protected (e.g., 12V rail), while the anode connects to ground. The marking code "1LR" appears adjacent to the band per the datasheet's Marking Diagram, confirming the 17 V variant. Incorrect orientation will cause forward conduction and device failure under normal bias.
SMB10J17AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMB10J
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 36.2A
- 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)
SMB10J17AH FAQ
1.How can I place an order for SMB10J17AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J17AH 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 SMB10J17AH reliable?
The price and inventory of SMB10J17AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J17AH is usually 5 days.
3.What payment methods are accepted for SMB10J17AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J17AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J17AH?
SMB10J17AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J17AH 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 SMB10J17AH?
For technical support, including SMB10J17AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J17AH requirements.
6.How does Aetrix verify that SMB10J17AH is sourced from the original manufacturer or authorized distributors?
All SMB10J17AH 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 SMB10J17AH meets industry standards.
7.What is the process for return or replacement of SMB10J17AH?
All SMB10J17AH units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J17AH, 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 SMB10J17AH part is unused and in its original packaging.
Return procedure for SMB10J17AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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