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Through-hole diodes adopt silicon substrate
Global SourcesUpdated on 2023/12/01
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China's typical selection of through-hole diodes come in glass- or plastic-covered units.
Through-hole diodes from China makers use silicon substrate, replacing germanium varieties. These come in glass- or plastic-encapsulated models.
By application, there are rectifier, switching, Schottky, TVS, Zener, fast-recovery and varactor types. The first four make up the mainstream supply.
Rectifier kinds account for about 70 percent of Rugao Dachang Electronics Co. Ltd's production, 50 percent for Jinan Gude Electronic Device Co. Ltd and 40 percent for Changzhou Guangda Electronics Co. Ltd. The third also offers Schottky and switching kinds. As for Shenzhen Luguang Electronic Technology Co. Ltd, 40 percent of yield consists of rectifier, Schottky and TVS units.
The common packages used include DO-41, DO-35, DO-27, DO-15, R-1, R-6 and DO-201AD. The first three form the bulk of turnout. Changzhou Guangda and Jinan Gude adopt mainly DO-41. The latter's monthly production capacity for the last is 246 million units. Jinan Gude can also churn out 56 million units in DO-15 and 43 million in DO-201AD.
Companies source wafers or chips locally, or from Taiwan, Japan and South Korea providers. Shenzhen Luguang turns to the second, while Jinan Gude has the capability to produce the key component in-house. The rest of the materials come from the domestic supply.
Prices have reached bottom level due to intense competition. In coming months, these are forecast to drop further, although within 2 percent only.
Here is a selection of through-hole diodes from China:
DIAC features ±3V breakover voltage
Changzhou Guangda Electronics Co. Ltd's model DB3 axial-lead DIAC has ±3V breakover voltage. It comes in a Jedec DO-35 package with a hermetically sealed glass cover.
The bidirectional unit is used in thyristor phase control, lamp dimming circuits, and universal motor heat and speed control.
The minimum order quantity is 30,000 units. Delivery is within 10 days.
Bridge rectifier with UL94V-0-rated housing
The model ABS210 glass-passivated single-phase bridge rectifier from Jinan Gude Electronic Device Co. Ltd supports 1,000V maximum repetitive peak reverse voltage.
The 2A unit has plated lead terminals and a UL94V-0-rated epoxy resin housing. The former has a 0.375in-long wire with 5-pound maximum pulling tension. It is solderable at 260 C for 10 seconds based on MIL-STD 202E and 208C method. Through-hole and SMD versions are available.
The company accepts a minimum order of 5,000 units for delivery in 7 days.
Rectifier diode has 12kV repetitive peak reverse voltage
Rugao Dachang Electronics Co. Ltd offers model CL01-12 rectifier diode for the high-voltage power supplies of microwave oven magnetrons. The unit has 12kV repetitive peak reverse voltage and 350mA average forward current. Its ambient temperature is -40 to 100 C.
The through-hole diode goes for $1.50 for a minimum quantity of 20,000 units. Delivery lead time is 21 days.
Rectifier diode in DO-41 package
This model EM518 general-purpose rectifier diode from Shenzhen Luguang Electronic Technology Co. Ltd comes in a DO-41 package. It has 2kV and 5µA maximum reverse voltage and current, and 1A highest average rectified current. The forward voltage is 1.2V, and the peak current 30A.
The 320mg through-hole unit is RoHS-compliant. It is priced at $0.04 and requires a minimum order of 5,000 units. Delivery is in 20 days.
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