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GL34B
Diotec Semiconductor
DIODE MINIMELF 100V 0.5A 175C
112968 Pcs New Original In Stock
Diode 100 V 500mA Surface Mount DO-213AA, MINI-MELF
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5.0 / 5.0
- (37 Ratings)
GL34B
Product Overview
12943689
DiGi Electronics Part Number
GL34B-DGManufacturer
Diotec Semiconductor
GL34B
Description
DIODE MINIMELF 100V 0.5A 175CInventory
112968 Pcs New Original In Stock
Diode 100 V 500mA Surface Mount DO-213AA, MINI-MELF
Quantity
Minimum 1
Minimum 1
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GL34B Technical Specifications
Category
Diodes, Rectifiers, Single Diodes
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Technology
Standard
Voltage - DC Reverse (Vr) (Max)
100 V
Current - Average Rectified (Io)
500mA
Voltage - Forward (Vf) (Max) @ If
1.2 V @ 500 mA
Speed
Standard Recovery >500ns, > 200mA (Io)
Reverse Recovery Time (trr)
1.5 µs
Current - Reverse Leakage @ Vr
5 µA @ 100 V
Capacitance @ Vr, F
-
Mounting Type
Surface Mount
Package / Case
DO-213AA
Supplier Device Package
DO-213AA, MINI-MELF
Operating Temperature - Junction
-50°C ~ 175°C
Datasheet & Documents
Datasheets
Download GL34B Product Specification (PDF)
HTML Datasheet
GL34B-DG
Environmental & Export Classification
RoHS Status
Not applicable
Moisture Sensitivity Level (MSL)
Not Applicable
REACH Status
Vendor Undefined
ECCN
EAR99
HTSUS
8541.10.0000
Additional Information
Other Names
2796-GL34BTR
Standard Package
2,500
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Shopping here is always a positive experience thanks to their focus on consistency and clarity.
Dec 02, 2025
Their after-sales support demonstrated genuine care.
Dec 02, 2025
Logistics were seamless; I received my order ahead of schedule without any hiccups.
Dec 02, 2025
Their after-sales responses are always quick, courteous, and effective.
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Frequently Asked Questions (FAQ)
What are the key reliability risks when using the GL34B diode in high-temperature automotive applications near its 175°C junction limit?
Operating the GL34B near its 175°C maximum junction temperature significantly accelerates thermal degradation and increases the risk of premature failure due to electromigration and package stress. In automotive environments with sustained under-hood heat, derating the GL34B to ≤150°C junction temperature is strongly recommended. Ensure adequate PCB copper area for heat spreading and avoid proximity to other heat sources. Monitor reverse leakage current, which rises exponentially with temperature—this can lead to thermal runaway in poorly cooled designs.
Can the GL34B replace a Vishay US1D or ON Semiconductor MURS120 in a 100V, 500mA rectification circuit without redesign?
The GL34B is electrically comparable to the US1D and MURS120 in voltage and current ratings, but it uses standard recovery technology (1.5 µs trr) versus the ultra-fast recovery of the US1D (~25 ns) and MURS120 (~35 ns). This makes the GL34B unsuitable as a drop-in replacement in high-frequency switching or snubber circuits where reverse recovery losses matter. For 50/60 Hz line rectification, it may work, but expect higher switching losses and potential EMI issues—verify thermal performance under load before committing.
How does the GL34B’s forward voltage drop of 1.2 V at 500 mA impact efficiency in low-voltage, high-current secondary-side rectification?
At 1.2 V forward drop, the GL34B dissipates 0.6 W at 500 mA, which represents a significant efficiency loss in low-output-voltage applications (e.g., 5 V or 3.3 V rails). In such cases, consider Schottky alternatives like the RB050LA-40HTU (0.45 V @ 500 mA) despite their lower reverse voltage rating. If 100 V blocking is required, the GL34B’s Vf is a necessary trade-off—optimize by minimizing trace resistance and using thermal vias to manage junction temperature.
Is the GL34B suitable for reverse polarity protection in battery-powered systems with tight space constraints?
Yes, the GL34B’s MINI-MELF (DO-213AA) package makes it viable for compact reverse polarity protection, but its 1.2 V forward drop results in higher power loss compared to MOSFET-based solutions. For battery life-critical applications, a P-channel MOSFET circuit may be more efficient. If using the GL34B, ensure the system can tolerate the voltage drop and that the 500 mA average current rating isn’t exceeded during inrush or fault conditions—consider adding a fuse or current-limiting resistor for robustness.
What PCB layout considerations are critical when integrating the GL34B in a high-reliability industrial power supply?
Due to the GL34B’s surface-mount MINI-MELF package and high operating temperature capability, ensure sufficient thermal relief by connecting the cathode pad to a large copper pour with multiple thermal vias. Avoid sharp trace angles near the diode to reduce mechanical stress. Keep high-di/dt loops short to minimize EMI, especially since the GL34B’s standard recovery behavior generates higher voltage spikes during turn-off. Also, verify solder joint integrity under thermal cycling—consider conformal coating if operating in humid or corrosive environments, despite the lack of formal MSL rating.
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.
GL34B CAD Models
Diotec Semiconductor GL34B PCB symbols & footprints
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