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Taiwan Semiconductor Corporation SMBJ10CH
- Part No.:
- SMBJ10CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ10CH.pdf
- Description:
- 600W, 12.4V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:3,201
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Product details
Overview
SMBJ10CH from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy ESD and surge protection in automotive and industrial power rails. It features 10 V working stand-off voltage (VWM), 18.8 V maximum clamping voltage (VC) at 33 A peak pulse current (IPP), and 600 W peak pulse power rating with sub-1 ps response time.
For engineers reviewing the SMBJ10CH datasheet, SMBJ10CH pinout, SMBJ10CH application, or SMBJ10CH equivalent, key selection criteria include bipolar configuration for AC-line or differential-signal protection, doubled ID limit (≤10 µA) per J-STD-020 moisture sensitivity level 1, and AEC-Q101 qualification for automotive under-hood use.
Technical Context
The SMBJ10CH implements a glass-passivated silicon junction optimized for fast transient suppression in bidirectional signal/power paths. Its breakdown voltage (VBR) is specified as 11.1–13.6 V at 1 mA test current, with clamping performance validated under 10/1000 µs waveform per ANSI/IEEE C62.35.
Thermal design relies on RθJC = 10 °C/W and RθJA = 55 °C/W, enabling operation up to +150 °C junction temperature. It meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity requirements and supports automated SMT placement with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 11.1 / 13.6 V @ 1 mA - Ensures reliable turn-on margin above VWM for robust overvoltage detection |
| VC @ IPP | 18.8 V @ 33 A - Limits downstream voltage stress during 10/1000 µs transients |
| PPK | 600 W - Withstands high-energy surges without failure per IEC 61000-4-5 Level 4 |
| ID @ VWM | ≤10 µA - Doubled leakage limit vs unidirectional variants enables tighter system-level leakage budgets |
| Response time | <1.0 ps - Enables protection of high-speed interfaces against ESD events per IEC 61000-4-2 |
| TJ max | +150 °C - Supports under-hood automotive environments and industrial enclosures |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; polarity-sensitive layout requiring alignment per PCB silkscreen. Matte tin-plated leads meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Transient current entry point in negative half-cycle | Enables symmetrical clamping for AC-coupled lines or differential buses |
| Cathode (banded end) | Transient current entry point in positive half-cycle | Provides identical clamping threshold in both directions due to bipolar junction structure |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress-test requirements |
| Glass passivated junction | Enhances long-term reliability and humidity resistance in harsh environments |
| Moisture sensitivity level 1 | Eliminates bake preconditioning prior to reflow, reducing manufacturing cost and risk |
| ISO 7637-2 compliance | Guarantees immunity to load-dump and inductive-switching transients in 12 V vehicle systems |
| Halogen-free construction | Meets IEC 61249-2-21 for RoHS-compliant and environmentally sustainable production |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and body control module inputs from battery load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamping device placed directly at connector entry point. Use Value: Limits voltage to ≤18.8 V during 10/1000 µs transients, preventing latch-up or permanent damage to 5 V/3.3 V logic. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Transient shunt across differential pair or single-ended signal line. Use Value: Sub-1 ps response ensures clamping occurs before sensitive ADC front-end stages are exposed to >20 V spikes. |
| LED Driver Output Protection | USB Type-C Port ESD Protection |
Use Scenario: Shielding constant-current LED drivers from inductive kickback when switching high-side MOSFETs. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output terminals. Use Value: 600 W PPK rating absorbs repetitive 50–100 mJ energy pulses without degradation over lifetime. | Use Scenario: Providing secondary-level ESD protection on USB-C CC and VBUS lines in docking stations. IC Role / Device Role / Timing Role: Bidirectional clamping element placed after primary common-mode choke. Use Value: Symmetrical VBR (11.1–13.6 V) ensures equal protection for both polarities of reversible connector insertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ10CA | Same DO-214AC (SMA) package; 11.1–13.4 V VBR; 19.9 V VC @ 31.5 A; 400 W PPK | Lower peak power rating limits use in high-energy automotive load-dump scenarios | Select when space-constrained layouts require smaller SMA footprint and 400 W suffices |
| ON Semiconductor 1.5SMC10CA | DO-214AB (SMC) package; 11.1–13.4 V VBR; 19.0 V VC @ 31.6 A; 1500 W PPK | Larger SMC package increases board area but enables higher surge endurance | Select when system-level testing requires >600 W surge margin or legacy SMC footprint compatibility |
Compared with SMBJ10CH, SMAJ10CA offers smaller size but reduced surge capability, while 1.5SMC10CA delivers higher PPK in a larger package-choice depends on board space, thermal budget, and worst-case transient energy profile.
Availability
SMBJ10CH is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial sensor interface protection, and LED lighting driver circuits requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SMBJ10CH 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, and rectifiers with global AEC-Q101 certification capabilities.
The SMBJH series was developed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust thermal performance in compact SMB packages.
FAQ
What does the "CH" suffix indicate in SMBJ10CH?
The "CH" suffix denotes a bidirectional configuration with doubled maximum blocking leakage current (ID ≤ 10 µA at VWM) compared to unidirectional "H" variants. This allows SMBJ10CH to provide symmetrical clamping for AC signals or differential buses while maintaining tighter leakage control than standard bipolar types-critical for low-power sensor nodes and battery-backed systems where standby current must be minimized.
Is SMBJ10CH qualified for automotive applications?
Yes, SMBJ10CH is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity standards. Its DO-214AA package, +150 °C TJ max rating, and glass-passivated junction make it suitable for under-hood engine control units, body electronics, and infotainment power supplies where reliability under thermal and electrical stress is mandatory.
How does SMBJ10CH compare to SMBJ10H in clamping performance?
SMBJ10CH and SMBJ10H share identical clamping voltage (VC = 18.8 V @ 33 A) and peak pulse power (600 W), but differ in configuration: SMBJ10CH is bidirectional with doubled ID limit (≤10 µA), while SMBJ10H is unidirectional with ID ≤ 5 µA. The SMBJ10CH's symmetrical VBR (11.1–13.6 V) ensures consistent protection on both voltage polarities-essential for protecting RS-485, CAN FD, or AC-coupled audio lines where reverse transients occur.
What is the thermal resistance profile of SMBJ10CH?
SMBJ10CH has a junction-to-case thermal resistance (RθJC) of 10 °C/W and junction-to-ambient resistance (RθJA) of 55 °C/W under standard JEDEC conditions. These values enable sustained operation at full 600 W pulse power only with adequate copper pour and airflow; for continuous duty, derating per Figure 2 applies-e.g., at 75 °C ambient, maximum allowable PPK drops to ~420 W.
Does SMBJ10CH require special handling during PCB assembly?
No special handling is required: SMBJ10CH is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30 °C/60% RH and placed directly into standard lead-free reflow profiles without baking. Its matte tin-plated leads ensure solderability per J-STD-002, and the DO-214AA package supports high-speed pick-and-place with industry-standard vision alignment.
SMBJ10CH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 18.8V
- Current - Peak Pulse (10/1000µs):
- 33A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ10CH FAQ
1.How can I place an order for SMBJ10CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ10CH 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 SMBJ10CH reliable?
The price and inventory of SMBJ10CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ10CH is usually 5 days.
3.What payment methods are accepted for SMBJ10CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ10CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ10CH?
SMBJ10CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ10CH 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 SMBJ10CH?
For technical support, including SMBJ10CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ10CH requirements.
6.How does Aetrix verify that SMBJ10CH is sourced from the original manufacturer or authorized distributors?
All SMBJ10CH 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 SMBJ10CH meets industry standards.
7.What is the process for return or replacement of SMBJ10CH?
All SMBJ10CH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ10CH, 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 SMBJ10CH part is unused and in its original packaging.
Return procedure for SMBJ10CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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