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GBLC03CI-LF-T7
UMW
ESD SUPPRESSOR DIODE TVS BI-DIR
61866 Pcs New Original In Stock
7V Clamp 1A (8/20µs) Ipp Tvs Diode Surface Mount SOD-323
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5.0 / 5.0
- (92 Ratings)
GBLC03CI-LF-T7
Product Overview
11037590
DiGi Electronics Part Number
GBLC03CI-LF-T7-DGManufacturer
UMW
GBLC03CI-LF-T7
Description
ESD SUPPRESSOR DIODE TVS BI-DIRInventory
61866 Pcs New Original In Stock
7V Clamp 1A (8/20µs) Ipp Tvs Diode Surface Mount SOD-323
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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365 - Day Quality Guarantee - Every part fully backed.
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GBLC03CI-LF-T7 Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
UMW
Product Status
Active
Type
Zener
Bidirectional Channels
1
Voltage - Reverse Standoff (Typ)
3V
Voltage - Breakdown (Min)
4V
Voltage - Clamping (Max) @ Ipp
7V
Current - Peak Pulse (10/1000µs)
1A (8/20µs)
Power - Peak Pulse
250W
Power Line Protection
No
Applications
Ethernet, USB
Capacitance @ Frequency
0.6pF @ 1MHz
Operating Temperature
-55°C ~ 150°C (TA)
Mounting Type
Surface Mount
Package / Case
SC-76, SOD-323
Supplier Device Package
SOD-323
Datasheet & Documents
HTML Datasheet
GBLC03CI-LF-T7-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
Additional Information
Other Names
4518-GBLC03CI-LF-T7CT
4518-GBLC03CI-LF-T7DKR
4518-GBLC03CI-LF-T7TR
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Leur support après-vente est personnalisé et toujours très efficace dans la résolution de nos problèmes.
Dec 02, 2025
High-quality finish, and I received it faster than I hoped.
Dec 02, 2025
Fast shipping combined with attentive customer support made this my preferred shopping platform.
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Frequently Asked Questions (FAQ)
Can the GBLC03CI-LF-T7 be safely used to protect a 3.3V USB 2.0 data line from ESD events, and what are the risks of signal integrity degradation due to its capacitance?
Yes, the GBLC03CI-LF-T7 is suitable for protecting 3.3V USB 2.0 data lines, as its 3V reverse standoff voltage and 4V minimum breakdown provide adequate margin above the signal rail while clamping transients to 7V at 1A. However, with a capacitance of only 0.6pF @ 1MHz, it introduces minimal loading—well below the 1.5pF typical limit for USB 2.0 high-speed signals—so signal integrity risk is low. Ensure tight PCB layout with short traces between the TVS and connector to minimize inductive overshoot, and avoid placing vias or stubs that could exacerbate reflections.
Is the GBLC03CI-LF-T7 a drop-in replacement for the Littelfuse SP1003-01ETG in a space-constrained Ethernet PHY interface design, and what performance trade-offs should I expect?
The GBLC03CI-LF-T7 can serve as a functional replacement for the SP1003-01ETG in many Ethernet PHY applications due to similar SOD-323 packaging, bidirectional operation, and sub-1pF capacitance. However, the SP1003-01ETG has a lower clamping voltage (5.5V max @ 1A) compared to the GBLC03CI-LF-T7’s 7V, offering marginally better protection for sensitive PHYs. If your PHY tolerates up to 7V transient spikes (per IEEE 802.3 isolation specs), the UMW part is acceptable—but verify system-level surge compliance (e.g., IEC 61000-4-5) through testing, as the higher clamp may stress downstream components under extreme surges.
What are the long-term reliability concerns when using the GBLC03CI-LF-T7 in an industrial environment with frequent thermal cycling between -40°C and 125°C?
The GBLC03CI-LF-T7 is rated for -55°C to 150°C operation and has an MSL 1 rating, indicating unlimited floor life and robust moisture resistance—ideal for harsh environments. However, repeated thermal cycling can induce mechanical stress at the solder joints due to CTE mismatch between the SOD-323 package and PCB. To mitigate failure risk, use a well-controlled reflow profile, ensure proper pad design with thermal relief, and consider conformal coating if condensation is possible. Monitor for increased leakage current over time, which may indicate junction degradation from cumulative stress.
Can I parallel two GBLC03CI-LF-T7 diodes to handle higher surge currents in a PoE-powered device, and what are the potential pitfalls of this approach?
Paralleling GBLC03CI-LF-T7 diodes is not recommended due to inherent manufacturing variations in breakdown voltage and dynamic resistance, which cause uneven current sharing during fast transients like 8/20µs surges. This imbalance can lead to one diode absorbing most of the energy and failing prematurely, defeating the purpose of redundancy. Instead, select a single TVS with higher peak pulse power (e.g., 400W or 600W class) in a larger package like SMA or SMB. If space constraints prevent this, validate current sharing empirically with pulse testing—but assume worst-case derating of 30–40% per diode.
How does the GBLC03CI-LF-T7 compare to the ON Semiconductor ESD9X3.3ST5G for protecting RS-485 transceivers in outdoor enclosures exposed to lightning-induced surges?
While both diodes offer 3.3V-class protection and SOD-323 packaging, the ESD9X3.3ST5G has a lower typical capacitance (0.35pF) and faster response time, making it slightly better for high-speed RS-485 networks (>10Mbps). However, the GBLC03CI-LF-T7 provides higher peak pulse power (250W vs. ~100W) and superior surge handling per 8/20µs waveform, which is critical for lightning-induced transients per IEC 61000-4-5. For outdoor RS-485 installations, the GBLC03CI-LF-T7’s robustness outweighs its marginally higher capacitance—just ensure it’s part of a multi-stage protection scheme (e.g., gas discharge tube + ferrite bead + TVS) to absorb bulk energy before it reaches the diode.
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.
GBLC03CI-LF-T7 CAD Models
UMW GBLC03CI-LF-T7 PCB symbols & footprints
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