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STMicroelectronics CBTVS2A12-1F3
- Part No.:
- CBTVS2A12-1F3
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- 4-XFBGA, FCBGA
- Datasheet:
-
CBTVS2A12-1F3.pdf
- Description:
- TVS DIODE 10VWM 15VC 4FLIPCHIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,660
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Product details
Overview
CBTVS2A12-1F3 from STMicroelectronics is a single-line flip-chip transient voltage suppressor with integrated non-resettable fuse, designed for ESD/OVP/OCP protection of ICs in portable electronics. It features 12 V breakdown voltage, ±15 kV IEC 61000-4-2 ESD rating, 15 V clamping at 1 A (8/20 µs), 180 pF line capacitance, and 0.4 mm profile for high-density PCBs.
For engineers reviewing the CBTVS2A12-1F3 datasheet, CBTVS2A12-1F3 pinout, CBTVS2A12-1F3 application, or CBTVS2A12-1F3 equivalent, key selection criteria include unidirectional clamping performance, fused overcurrent cutoff timing (100 ms at 5 A), junction capacitance impact on high-speed signal integrity, and compatibility with 0.77 mm × 0.77 mm flip-chip layout constraints.
Technical Context
This device integrates a TVS diode and a fusible element in a monolithic flip-chip die, enabling simultaneous electrostatic discharge suppression and permanent overcurrent interruption. Its unidirectional architecture protects against positive transients only, with clamping triggered before fuse activation under surge conditions.
The 180 pF capacitance at 0 V bias and low 50 mΩ pre-fuse resistance support USB 2.0 and audio line protection without signal degradation. Fast response time (<1 ns) ensures suppression precedes thermal fuse opening during ESD events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 12 V @ 1 mA - defines minimum trigger threshold for transient clamping |
| Clamping Voltage (VCL) | 15 V @ 1 A, 8/20 µs - maximum voltage seen by protected IC during surge |
| ESD Rating | ±15 kV contact & air discharge (IEC 61000-4-2 Level 4) - meets industrial handheld immunity requirements |
| Junction Capacitance | 180 pF @ 0 V - limits bandwidth impact on 480 Mbps USB 2.0 data lines |
| Fuse Opening Time | 100 ms @ 5 A - provides robust short-circuit protection without nuisance tripping |
| Package Thickness | 0.4 mm - enables ultra-thin mobile device stacking and board space reduction |
| Forward Voltage | 1.4 V @ 850 mA - minimal DC power loss in charging path applications |
Pinout & Package
CBTVS2A12-1F3 uses a 4-bump flip-chip package (0.77 mm × 0.77 mm, 0.4 mm height) with two functional terminals per side: A1/A2 (anode) and B1/B2 (cathode). B1 and B2 bumps must be jointly grounded on PCB per datasheet layout guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 / A2 | Anode input | Connects to protected signal/power line; carries forward current and surge current into device |
| B1 / B2 | Cathode ground | Must be tied together and connected to system ground plane; forms return path for clamping current |
Key Features
| Feature | Design Value |
|---|---|
| Integrated TVS + fuse | Single-component solution eliminates discrete TVS + PTC/fuse layout complexity and footprint |
| Ultra-low profile | 0.4 mm height enables use in <1 mm-thick smartphones and wearables |
| High ESD robustness | ±15 kV contact/air discharge withstand supports CE/FCC compliance testing |
| Controlled clamping | 15 V clamping at 1 A ensures safe voltage margin below 16 V logic rail limits |
| Low dynamic resistance | 50 mΩ pre-fuse resistance minimizes voltage drop in battery charging paths |
Applications
| USB 2.0 Data Lines | Smartphone Charging Port |
|---|---|
Use Scenario: Protecting D+ and D− lines from ESD during cable insertion and hot-plug events. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive transients while fused element prevents latch-up-induced overcurrent damage. Use Value: 180 pF capacitance preserves signal integrity up to 480 Mbps; ±15 kV ESD rating exceeds IEC 61000-4-2 Level 4. | Use Scenario: Safeguarding 5 V USB power input against surges and sustained overcurrent from faulty chargers. IC Role / Device Role / Timing Role: Acts as combined overvoltage clamp and irreversible current limiter on VBUS line. Use Value: 12 V breakdown and 15 V clamping protect downstream PMICs; 100 ms fuse trip at 5 A prevents thermal runaway. |
| Audio Jack Interface | Wearable Sensor Hub |
Use Scenario: Shielding microphone and headset detection lines from user-hand ESD in 3.5 mm jack connectors. IC Role / Device Role / Timing Role: Low-capacitance TVS suppresses fast transients without attenuating analog audio bandwidth. Use Value: 180 pF capacitance avoids high-frequency roll-off in 20 kHz audio band; 0.4 mm profile fits slim earbud PCBs. | Use Scenario: Protecting I²C lines between MCU and environmental sensors in compact fitness trackers. IC Role / Device Role / Timing Role: Provides bidirectional-like protection via dual-line placement (A1-B1 and A2-B2) on SDA/SCL. Use Value: 50 mΩ on-resistance avoids I²C pull-up voltage shift; 125 °C max junction temperature supports body-worn thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient and overcurrent protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SEMTECH RCLAMP0524P.TCT | Resettable polymer PTC + TVS array; 12 V standoff, 17 V clamping; 0.65 mm height | Supports repeated surge events but lacks permanent fault isolation | Choose for systems requiring field-serviceable protection without component replacement |
| ON SEMICONDUCTOR NUP4201MR6T1G | Quad-channel TVS only (no fuse); 12 V standoff, 25 V clamping; SOT-563 package | Requires external fuse for overcurrent; higher 25 V clamping increases risk to 3.3 V logic | Choose when cost sensitivity outweighs need for integrated fuse and lower clamping voltage |
Compared with RCLAMP0524P.TCT and NUP4201MR6T1G, CBTVS2A12-1F3 uniquely delivers permanent fault isolation with sub-15 V clamping in a 0.4 mm profile-critical for space-constrained, safety-critical portable designs where resettable behavior is unacceptable.
Availability
CBTVS2A12-1F3 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, smartphone charging port hardening, and wearable sensor hub safeguarding requiring stable component supply across high-volume consumer electronics production cycles.
Supply support for CBTVS2A12-1F3 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in automotive, industrial, and consumer ICs with strong emphasis on power management and protection solutions.
CBTVS2A12-1F3 belongs to ST's ECOPACK®-compliant circuit breaker TVS family, engineered specifically for miniaturized portable electronics needing simultaneous ESD, OVP, and irreversible OCP in one ultra-thin package.
FAQ
What is the recommended PCB layout for CBTVS2A12-1F3 grounding?
B1 and B2 bumps must be connected together and routed to a low-inductance system ground plane using wide, short traces. The datasheet specifies joint grounding to minimize loop inductance during ESD events and ensure symmetrical current sharing across both cathode bumps.
Does CBTVS2A12-1F3 support bidirectional transient protection?
No. CBTVS2A12-1F3 is a unidirectional device optimized for positive transients on power or signal lines referenced to ground. It does not clamp negative excursions beyond its forward voltage drop (~1.4 V), making it unsuitable for AC-coupled or true bidirectional interfaces without additional components.
How does the fuse behavior interact with TVS clamping during an 8/20 µs surge?
During an 8/20 µs surge, the TVS clamps first (sub-nanosecond response), limiting voltage to ≤15 V while conducting peak current. The fuse remains intact unless the surge energy or subsequent DC overcurrent exceeds its thermal time constant-ensuring clamping occurs before permanent interruption.
Can CBTVS2A12-1F3 be used on high-speed differential pairs like USB 3.0?
No. With 180 pF junction capacitance and no differential configuration, CBTVS2A12-1F3 introduces excessive skew and insertion loss on SuperSpeed (5 Gbps) differential lanes. It is validated only for USB 2.0 (480 Mbps) single-ended lines where capacitance impact is acceptable.
CBTVS2A12-1F3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 4-XFBGA, FCBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 12V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 1A (8/20µs)
- Power - Peak Pulse:
- 44W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-FlipChip
CBTVS2A12-1F3 FAQ
1.How can I place an order for CBTVS2A12-1F3 through Aetrix?
Please submit a Request for Quotation (RFQ) for CBTVS2A12-1F3 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 CBTVS2A12-1F3 reliable?
The price and inventory of CBTVS2A12-1F3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CBTVS2A12-1F3 is usually 5 days.
3.What payment methods are accepted for CBTVS2A12-1F3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CBTVS2A12-1F3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CBTVS2A12-1F3?
CBTVS2A12-1F3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CBTVS2A12-1F3 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 CBTVS2A12-1F3?
For technical support, including CBTVS2A12-1F3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CBTVS2A12-1F3 requirements.
6.How does Aetrix verify that CBTVS2A12-1F3 is sourced from the original manufacturer or authorized distributors?
All CBTVS2A12-1F3 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 CBTVS2A12-1F3 meets industry standards.
7.What is the process for return or replacement of CBTVS2A12-1F3?
All CBTVS2A12-1F3 units undergo pre-shipment inspection (PSI). If there is an issue with CBTVS2A12-1F3, 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 CBTVS2A12-1F3 part is unused and in its original packaging.
Return procedure for CBTVS2A12-1F3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CBTVS2A12-1F3 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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