1N935BUR-1 1N938BUR-1
CDLL935 CDLL938B
Qualified Levels:
Temperature Compensated
JAN, JANTX,
Available on
Zener Reference Diodes JANTXV and JANS
commercial
versions
Qualified per MIL-PRF-19500/156
DESCRIPTION
The popular 1N935BUR-1 through 1N938BUR-1 series of Zero-TC (Temperature
Compensated) reference diodes provides a selection of 9.0 V nominal voltages and
o
temperature coefficients to as low as 0.001 %/ C for minimal voltage change with temperature
when operated at 7.5 mA. These glass surface mount DO-213AA reference diodes are also
available in JAN, JANTX, JANTXV and JANS military qualifications. For commercial
applications it is also available as RoHS compliant (not applicable to military).
DO-213AA MELF
Important: For the latest information, visit our website 1N935BUR-1 1N938BUR-1
CDLL935 CDLL938B
MECHANICAL and PACKAGING
CASE: Hermetically sealed glass case package.
TERMINALS: Tin/lead plated or RoHS compliant matte-tin (on commercial grade only) over copper clad steel. Solderable per
MIL-STD-750, method 2026.
POLARITY: Cathode end is banded.
MOUNTING: The axial coefficient of expansion (COE) of this device is approximately +6PPM/C. The COE of the mounting
surface system should be selected to provide a suitable match with this device.
MARKING: Part number.
TAPE & REEL option: Standard per EIA-296. Consult factory for quantities.
WEIGHT: Approximately 0.04 grams.
See Package Dimensions on last page.
PART NOMENCLATURE
JAN 1N935 B UR -1 e3
Reliability Level* RoHS Compliance
JAN = JAN Level e3 = RoHS compliant (available
JANTX = JANTX Level on commercial grade only)
JANTXV = JANTXV Level Blank = non-RoHS compliant
JANS = JANS Level
Blank = Commercial
Metallurgical Bond
*(available on B suffix only)
MELF Surface Mount
JEDEC type number
(see Electrical Characteristics
Temperature Range
table)
Blank = 0 to +75 C
A = -55 to +100 C
B = -55 to +150 C (required for
JAN level)
SYMBOLS & DEFINITIONS
Symbol Definition
I Maximum Zener Current: The maximum rated dc current for the specified power rating.
ZM
I , I , I Regulator Current: The dc regulator current (I ), at a specified test point (I ), near breakdown knee (I ).
Z ZT ZK Z ZT ZK
V Zener Voltage: The Zener voltage the device will exhibit at a specified current (I ) in its breakdown region.
Z Z
Dynamic Impedance: The small signal impedance of the diode when biased to operate in its breakdown region at a
Z or Z
ZT ZK
specified rms current modulation (typically 10% of I or I ) and superimposed on I or I respectively.
ZT ZK ZT ZK
T4-LDS-0158, Rev. 2 (121998) 2013 Microsemi Corporation Page 2 of 6