1N938B-1 반도체 회로 부품 판매점
Temperature Compensated Zener Reference Diodes
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 Microsemi |
1N935B-1 – 1N938B-1
Available on
commercial
versions
Temperature Compensated
Zener Reference Diodes
Qualified per MIL-PRF-19500/156
DESCRIPTION
The popular 1N935B-1 through 1N938B-1 series of Zero-TC (Temperature Compensated)
reference diodes provides a selection of 9.0 V nominal voltages and temperature coefficients
to as low as 0.001 %/oC for minimal voltage change with temperature when operated at 7.5
mA. These glass axial-leaded DO-35 reference diodes are also available in JAN, JANTX,
JANTXV and JANS military qualifications. For commercial applications it is also available as
RoHS compliant.
Qualified Levels:
JAN, JANTX,
JANTXV and JANS
Important: For the latest information, visit our website http://www.microsemi.com.
FEATURES
• JEDEC registered 1N935 through 1N938 number series.
• Standard reference voltage of 9.0V +/- 5%.
• Temperature compensated.
• Internal metallurgical bond.
• Double plug construction.
• JAN, JANTX, JANTXV and JANS qualification are available per MIL-PRF-19500/156.
• RoHS compliant versions available (commercial grade only).
APPLICATIONS / BENEFITS
• Provides minimal voltage changes over a broad temperature range.
• For instrumentation and other circuit designs requiring a stable voltage reference.
• Maximum temperature coefficient selections available from 0.01 %/ºC to 0.001 %/ºC.
• Flexible axial-lead mounting terminals.
• Non-sensitive to ESD per MIL-STD-750 method 1020.
DO-35 (DO-204AH)
Package
Also available in:
DO-213AA MELF
(surface mount)
1N935BUR-1 – 1N938BUR-1
MAXIMUM RATINGS @ TA = 25 ºC unless otherwise stated
Parameters/Test Conditions
Junction and Storage temperature
Power Dissipation (1)
Maximum Zener Current
Solder Pad Temperatures at 10 s
Symbol
TJ and TSTG
PD
I ZM
T SP
Value
-65 to +175
500
50
260
Unit
oC
mW
mA
oC
Notes: 1. @ TL = 50 oC maximum (see figure 1). For optimum voltage-temperature stability, IZ = 7.5 mA (less than
50 mW in dissipated power). Derate at 3.33 mW/oC above TA = +25 oC.
MSC – Lawrence
6 Lake Street,
Lawrence, MA 01841
1-800-446-1158
Tel: (978) 620-2600
Fax: (978) 689-0803
MSC – Ireland
Gort Road Business Park,
Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044
Fax: +353 (0) 65 6822298
Website:
www.microsemi.com
T4-LDS-0155, Rev. 2 (121998)
©2013 Microsemi Corporation
Page 1 of 6
1N935B-1 – 1N938B-1
MECHANICAL and PACKAGING
• CASE: Hermetically sealed glass case. DO-35 (DO-204AH) package.
• TERMINALS: Tin-lead or RoHS compliant annealed matte-tin plating (commercial grade only) over copper clad steel. Solderable
per MIL-STD-750, method 2026.
• MARKING: Part number and cathode band.
• POLARITY: Reference diode to be operated with the banded (cathode) end positive with respect to the opposite end.
• TAPE & REEL option: Standard per EIA-296 (add “TR” suffix to part number). Consult factory for quantities.
• WEIGHT: Approximately 0.2 grams.
• See package dimensions on last page.
Reliability Level*
JAN = JAN Level
JANTX = JANTX Level
JANTXV = JANTXV Level
JANS = JANS Level
* (available on “B” suffix only)
Blank = Commercial
JEDEC type number
(see Electrical Characteristics
table)
PART NOMENCLATURE
JAN 1N935 B -1 e3
RoHS Compliance
e3 = RoHS compliant (available
on commercial grade only)
Blank = non-RoHS compliant
Metallurgical Bond
Temperature Range
Blank = 0 to +75 ºC
A = -55 to +100 ºC
B = -55 to +150 ºC (required for
JAN level)
Symbol
I ZM
IZ, IZT, IZK
VZ
ZZT or ZZK
SYMBOLS & DEFINITIONS
Definition
Maximum Zener Current: The maximum rated dc current for the specified power rating.
Regulator Current: The dc regulator current (IZ), at a specified test point (IZT), near breakdown knee (IZK).
Zener Voltage: The Zener voltage the device will exhibit at a specified current (IZ) in its breakdown region.
Dynamic Impedance: The small signal impedance of the diode when biased to operate in its breakdown region at a
specified rms current modulation (typically 10% of IZT or IZK) and superimposed on IZT or IZK respectively.
T4-LDS-0155, Rev. 2 (121998)
©2013 Microsemi Corporation
Page 2 of 6
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1N938B-1 diode
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