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1N5257UR の電気的特性と機能

1N5257URのメーカーはMicrosemi Corporationです、この部品の機能は「500 mW GLASS SURFACE MOUNT ZENER DIODES」です。


製品の詳細 ( Datasheet PDF )

部品番号 1N5257UR
部品説明 500 mW GLASS SURFACE MOUNT ZENER DIODES
メーカ Microsemi Corporation
ロゴ Microsemi Corporation ロゴ 




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1N5257UR Datasheet, 1N5257UR PDF,ピン配置, 機能
SCOTTSDALE DIVISION
1N5221UR thru 1N5281BUR, e3
(or MLL5221 thru MLL5281B, e3)
500 mW GLASS SURFACE MOUNT
ZENER DIODES
DESCRIPTION
The 1N5221BUR thru 1N5281BUR series of 0.5 watt Zener Voltage
Regulators provides a surface mount equivalent to the popular JEDEC
registered 1N5221B to 1N5281B for 2.4 to 200 volts in standard 5%
tolerances as well as tighter tolerances identified by different suffix letters on
the part number. These are also available with an internal-metallurgical-
bond option by adding a -1suffix (see separate data sheet). Microsemi
also offers numerous other Zener products to meet higher and lower power
applications.
IMPORTANT: For the most current data, consult MICROSEMIs website: http://www.microsemi.com
APPEARANCE
DO-213AA
FEATURES
Surface mount equivalents to the JEDEC registered
1N5221 thru 1N5281B series
Hermetically sealed surface mount package
RoHS Compliant devices available by adding e3suffix
Internal metallurgical bond option available by adding a
-1suffix (see separate data sheet for same part
numbers with -1suffix)
DO-7 or DO-35 glass body axial-leaded Zener
equivalents also available per JEDEC registration (see
separate data sheet for part numbers 1N5221 thru
1N5281B series
MAXIMUM RATINGS
Operating and Storage temperature: -65ºC to +175ºC
Thermal Resistance: 150ºC/W junction to end cap
and 300ºC/W junction to ambient when mounted on
FR4 PC board (1 oz Cu) with recommended footprint
www.DataSheet4U.c(soeme last page)
Steady-State Power: 0.5 watts at end cap
temperature
< 25ºC when
TEC < 100oC
mounted on
or ambient temperature TA
FR4 PC board as described
for thermal resistance above (see Figure 2 for
derating)
Forward voltage @200 mA: 1.1 volts (maximum)
Solder Temperatures: 260 ºC for 10 seconds (max)
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating
current and temperature range
Selection from 2.4 to 200 V
Standard voltage tolerances are plus/minus 5%
with B suffix identification and 10 % with A suffix
Tight tolerances available in plus or minus 2%
or 1% with C or D suffix respectively
Nonsensitive to ESD per MIL-STD-750 Method 1020
Minimal capacitance (see Figure 3)
Inherently radiation hard as described in Microsemi
MicroNote 050
MECHANICAL AND PACKAGING
CASE: Hermetically sealed glass DO-213AA
(SOD80 or MLL34) MELF style package
FINISH: End caps Tin-Lead or RoHS Compliant
annealed matte-Tin plating solderable per MIL-STD-
750, method 2026
POLARITY: Cathode indicated by band where
diode is to be operated with the banded end positive
with respect to the opposite end for Zener regulation
MARKING: cathode band only
TAPE & REEL option: Standard per EIA-481-B with
12 mm tape, 2000 per 7 inch reel or 5000 per 13
inch reel (add TRsuffix to part number)
WEIGHT: 0.04 grams
See package dimensions on last page
Copyright 2005
8-29-2005 REV B
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1

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1N5257UR pdf, ピン配列
SCOTTSDALE DIVISION
1N5221UR thru 1N5281BUR, e3
(or MLL5221 thru MLL5281B, e3)
500 mW GLASS SURFACE MOUNT
ZENER DIODES
NOTE 1:
NOTE 2:
NOTE 3:
NOTE 4:
Table as shown lists type numbers, which indicate a tolerance of +/-20% with guaranteed limits on only VZ, IR, and VF. Devices with
guaranteed limits on all six parameters are indicated by suffix Afor +/-10%, Bfor +/-5%, Cfor +/-2%, and Dfor +/-1% tolerance.
The electrical characteristics are measured after allowing the device to stabilize for 20 seconds.
Temperature coefficient ( vz). Test conditions for temperature coefficient are as follows:
a. IZT = 7.5 mA, T1 = 25oC,
T2 = 125oC (1N5221AUR & BUR thru 1N5242AUR & BUR)
b. IZT = Rated IZT, T1 = 25oC,
T2 = 125oC (1N5243AUR & BUR thru 1N5281AUR & BUR)
Device to be temperature stabilized with current applied prior to reading breakdown voltage at the specified ambient temperature.
These devices may be ordered as either 1N5221UR thru 1N5281BUR or as MLL5221 thru MLL5281B part numbers.
GRAPHS
TEC
TA
Voltage Temperature
Coefficient %/oC
mV Change /ºC
TEC End Cap Temperature (oC), or
TA Ambient Temperature on FR4 PC BOARD
FIGURE 1
POWER DERATING CURVE
www.DataSheet4U.com
NOMINAL ZENER VOLTAGE (VOLTS)
FIGURE 2
ZENER VOLTAGE TEMPERATURE
COEFFICIENT vs. ZENER VOLTAGE
PACKAGE DIMENSIONS
INCHES
MILLIMETERS
DIM MIN MAX MIN MAX
A 0.063 0.067 1.60 1.70
B 0.130 0.146 3.30 3.70
C 0.016 0.022 0.41 0.55
INCHES
A .200
B .055
C .080
mm
5.08
1.40
2.03
PAD LAYOUT
FIGURE 3
CAPACITANCE vs. ZENER VOLTAGE
(TYPICAL)
Copyright 2005
8-29-2005 REV B
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
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部品番号部品説明メーカ
1N5257UR

500 mW GLASS SURFACE MOUNT ZENER DIODES

Microsemi Corporation
Microsemi Corporation


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