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GBLC12C
ANBON SEMICONDUCTOR (INT'L) LIMITED
TVS DIODE 12V VBR MIN 13.3V SO
17353 Pcs New Original In Stock
30V Clamp 6A Ipp Tvs Diode Surface Mount SOD-323
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5.0 / 5.0
- (131 Ratings)
GBLC12C
Product Overview
2668888
DiGi Electronics Part Number
GBLC12C-DGManufacturer
ANBON SEMICONDUCTOR (INT'L) LIMITED
GBLC12C
Description
TVS DIODE 12V VBR MIN 13.3V SOInventory
17353 Pcs New Original In Stock
30V Clamp 6A Ipp Tvs Diode Surface Mount SOD-323
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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GBLC12C Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Type
Zener
Bidirectional Channels
1
Voltage - Reverse Standoff (Typ)
12V (Max)
Voltage - Breakdown (Min)
13.3V
Voltage - Clamping (Max) @ Ipp
30V
Current - Peak Pulse (10/1000µs)
6A
Power - Peak Pulse
350W
Power Line Protection
No
Applications
USB
Capacitance @ Frequency
0.8pF @ 1MHz
Operating Temperature
-55°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
SC-76, SOD-323
Supplier Device Package
SOD-323
Datasheet & Documents
Datasheets
Download GBLC12C Product Specification (PDF)
HTML Datasheet
GBLC12C-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
Additional Information
Other Names
4530-GBLC12CTR
4530-GBLC12CDKR
4530-GBLC12CCT
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Je suis très content de leur support après-vente, très réactifs.
Dec 02, 2025
持続可能な素材を使った包装に共感しています。配送スピードも抜群で、非常に満足です。
Dec 02, 2025
The extensive inventory at DiGi Electronics prevents us from facing shortages unexpectedly.
Dec 02, 2025
Inventory accuracy at DiGi Electronics is consistently high, leading to seamless procurement processes.
Dec 02, 2025
DiGi Electronics makes post-purchase support easy and effective.
Dec 02, 2025
I appreciate their commitment to eco-friendly packaging, which shows they care about the environment.
Dec 02, 2025
I value their honest pricing approach and commitment to customer satisfaction.
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Frequently Asked Questions (FAQ)
Can the GBLC12C be safely used as a drop-in replacement for a SMAJ12A TVS diode in a USB 2.0 interface design, and what are the key risks to evaluate?
The GBLC12C is not a direct electrical or thermal replacement for the SMAJ12A due to significant differences in package size and power handling. While both are 12V-class TVS diodes, the SMAJ12A (in SMA package) is rated for 400W peak pulse power and handles higher surge currents, whereas the GBLC12C (SOD-323) is limited to 350W and 6A Ipp. In high-energy transient environments like hot-plug events or ESD from external ports, the smaller GBLC12C may overstress and fail prematurely. Additionally, the SOD-323’s reduced thermal mass increases risk of thermal runaway under repeated surges. Only consider substitution if your system’s threat model is limited to low-energy ESD (e.g., IEC 61000-4-2 Level 4) and board space constraints prevent using a larger package. Always validate with surge testing under real-world conditions.
What layout and grounding considerations are critical when integrating the GBLC12C into a high-speed USB data line to avoid signal integrity degradation?
Due to its ultra-low capacitance of 0.8pF @ 1MHz, the GBLC12C is suitable for high-speed USB 2.0 (480 Mbps) lines, but improper PCB layout can negate this advantage. Place the GBLC12C as close as possible to the USB connector, with short, direct traces to the protected lines and a solid ground connection via multiple vias to the ground plane. Avoid stubs or long return paths that increase inductance, which can cause voltage overshoot during fast transients. Use a local ground pour under the device if possible, and ensure the ground pad is thermally and electrically well-connected. Failure to follow these practices may result in residual clamping voltage exceeding safe levels for downstream ICs, especially during fast ESD events with rise times under 1ns.
How does the GBLC12C compare to the Littelfuse SP1012-01ETG in terms of robustness and suitability for portable USB devices exposed to frequent hot-plugging?
The GBLC12C and SP1012-01ETG both target low-capacitance USB protection, but they differ significantly in surge capability and reliability under repetitive stress. The SP1012-01ETG (also SOD-323) offers similar capacitance (0.6pF) but is rated for 10A Ipp and 500W peak power—substantially higher than the GBLC12C’s 6A/350W. In portable devices where USB connectors endure frequent mating cycles and potential miswiring (e.g., VBUS shorted to data lines), the SP1012 provides better margin against degradation from cumulative surge exposure. The GBLC12C may be acceptable in low-risk, consumer-grade applications with good system-level isolation, but for industrial or ruggedized portable gear, the SP1012 is a safer choice. Always consider adding a series resistor or PTC fuse upstream to limit current during fault conditions.
Is the GBLC12C suitable for protecting 12V automotive accessory ports, and what environmental factors could limit its long-term reliability?
The GBLC12C is not recommended for direct use in 12V automotive power lines despite its 12V nominal rating. Automotive environments expose components to load dump transients (ISO 7637-2) that can exceed 35V for hundreds of milliseconds—far beyond the GBLC12C’s 30V clamping voltage at 6A. Even brief exposure can push the device into thermal overload. Additionally, while its -55°C to 125°C operating range meets automotive temperature requirements, the SOD-323 package has limited thermal dissipation, increasing risk of latent failure under repeated stress. For automotive 12V rail protection, use a dedicated automotive TVS like the SMAJ15A or SM8S12A, which are rated for load dump and have higher surge energy absorption. The GBLC12C should only be used on low-power signal lines (e.g., USB data) within the vehicle, not on power rails.
What are the failure modes of the GBLC12C under sustained overvoltage conditions, and how can I detect early signs of degradation during field deployment?
Under sustained or repetitive overvoltage beyond its 30V clamp rating, the GBLC12C typically fails short-circuit due to thermal runaway in the Zener junction, which can lead to downstream circuit damage or excessive leakage current. In marginal cases, it may fail open after cumulative degradation, leaving the protected circuit unprotected. Early signs include increased leakage current (measurable with a microammeter at 12V bias) or slight elevation in junction temperature during normal operation. To mitigate risk, implement periodic system diagnostics that monitor USB data line impedance or include a current-sense circuit on the protected rail. For mission-critical designs, consider redundant protection or use a TVS with integrated health monitoring. Always derate the GBLC12C by at least 20% in continuous stress scenarios and avoid operating near its maximum clamping voltage for extended durations.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
GBLC12C CAD Models
ANBON SEMICONDUCTOR (INT'L) LIMITED GBLC12C PCB symbols & footprints
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