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UPC1944 Datasheet(PDF) 9 Page - NEC

Part # UPC1944
Description  ADJUSTABLE PRECISION SHUNT REGULATORS
PDF  7 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPC1944 Datasheet(HTML) 9 Page - NEC

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Data Sheet G10239EJ3V0DS00
9
µµµµ PC1943,1944
RECOMMENDED SOLDERING CONDITIONS
When soldering these products, there are highly recommended to observe the conditions as shown below.
If other soldering processes are used, or if the soldering is performed under different conditions, please make sure to
consult with our sales offices.
For more details, refer to our document “Semiconductor Device Mounting Technology Manual” (C10535E).
Type of Surface Mount Device
µµµµ PC1943T, 1944T : Power mini mold (SOT-89)
Process
Conditions
Symbol
Infrared ray reflow
Peak temperature: 235
°C or below (Package surface temperature),
Reflow time: 30 seconds or less (at 210
°C or higher),
Maximum number of reflow processes: 2 times.
IR35-00-2
VPS
Peak temperature: 215
°C or below (Package surface temperature),
Reflow time: 40 seconds or less (at 200
°C or higher),
Maximum number of reflow processes: 2 times.
VP15-00-2
Wave soldering
Solder temperature: 260
°C or below, Flow time: 10 seconds or less,
Maximum number of flow processes: 1 time,
Pre-heating temperature: 120
°C or below (Package surface temperature).
WS60-00-1
Caution Apply only one kind of soldering condition to a device, or the device will be damaged by heat stress.
µµµµ PC1944GR : 8-pin plastic SOP (5.72 mm (225))
Process
Conditions
Symbol
Infrared ray reflow
Peak temperature: 235
°C or below (Package surface temperature),
Reflow time: 30 seconds or less (at 210
°C or higher),
Maximum number of reflow processes: 1 time.
IR35-00-1
VPS
Peak temperature: 215 °C or below (Package surface temperature),
Reflow time: 40 seconds or less (at 200
°C or higher),
Maximum number of reflow processes: 1 time.
VP15-00-1
Wave soldering
Solder temperature: 260
°C or below, Flow time: 10 seconds or less,
Maximum number of flow processes: 1 time,
Pre-heating temperature: 120
°C or below (Package surface temperature).
WS60-00-1
Caution Apply only one kind of soldering condition to a device, or the device will be damaged by heat stress.
Type of Through-hole Device
µµµµ PC1944J : 3-pin plastic SIP (TO-92)
Process
Conditions
Wave soldering (only to leads)
Solder temperature: 260
°C or below, Flow time: 10 seconds or less.
Caution For through-hole device, the wave soldering process must be applied only to leads, and make sure
that the package body does not get jet soldered.



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