
COMMUNICATION CRYSTALS
ULTRA MINIATURE 
 UM-1
  
UM-4
  
UM-5
ABU, ABU4, ABU5
- I
- L
-L1
- V
-M
-MJ (Metal Jackets 
and Formed Leads)
-QXX(Trimmed Leads)
(Insulator Tab)
(3rd Lead welded)
(3rd Lead Soldered)
(Vinyl Sleeving)
(SMT Formed Leads)
ABUX -  Frequency -  CL -   ESR -  Temperature -   Tolerance
-   Stability
-    Mode
-    Value Added
-     Packaging
XX.XXXX MHz
RXXX
(value in 
)
-1  for 
±
 10ppm
-7  for 
±
 15ppm
-2  for 
±
 20ppm
-3  for 
±
 25ppm
-4  for 
±
 30ppm   
-R3 for 
±
 3ppm
-R5 for 
±  
5ppm
-U
for 
±
 10ppm
-G   for 
±
 15ppm
-X
for 
±
 20ppm
-W for 
±
 25ppm
-Y
for 
±
 30ppm
-H
for 
±
 35ppm 
-Z
for 
± 
50ppm
Load cap. in pF or
-S for Series
Blank or
 4,5
PART NUMBER
H
 M
AX
.
APPLICATIONS:
 Pagers, Hand-held phones, Cordless phones, Communication equipment.
S
T
A
N
D
A
R
D
S
P
E
C
I
F
I
PARAMETERS
ABU (UM-1)
Frequency Range
6MHz - 200MHz
6.00MHz < F < 25.00MHz   (Fundamental)
25.0MHz < F < 72.0MHz    (3rd overtone)
72.00MHz  < F < 160.0MHz  (5th overtone)
160.
0
MHz  < F < 200.00MHz (7th overtone)
Environmental & mechanical specifications, see appendix C. Group 1.  Marking, see appendix G.
Recommended handling, see appendix F.  Reflow profile, see appendix E.
Application notes, see appendix A.  Value added, see appendix D.
ORDERING 
OPTIONS
Operation Mode
A
R
D
S
P
C
A
A
T
T
I
I
O
ABU4 (UM-4) & ABU5 (UM-5) 
O
N
N
S
S
Operating Temperature
Storage Temperature
Frequency Tolerance 
@
25°C
Frequency Stability over Temp.
Equivalent Series Resistance 
(ESR)
0°C to +70°C  
(See Options)
-40°C to +125°C 
±50ppm max.
 (See Options)
±50ppm max. 
(See Options)
120 
 max. for
100 
 max. for
80 
 max. for
60 
 max. for 10.0MHz  < F < 11.0MHz
50 
 max. for 11.0MHz  < F < 12.0MHz
40 
 max. for 12.0MHz  < F < 14.0MHz
30 
 max. for 14.0MHz  < F < 25.0MHz
70 
 max. for 25.0MHz < F < 72.0MHz
100 
 max. for 72.0MHz < F < 160.0MHz
140 
 max. for 160.0MHz < F< 200.0MHz
Fundamental
3rd Overtone
5th Overtone
7th Overtone
Shunt Capacitance C
0
Load Capacitance C
L
Drive Level
Aging 
@
25°C First Year
Insulation Resistance
7pF max.
18pF 
(See Options)
1mW max.,
 100μW correlation
±3ppm max.  (tighter aging available)
500M
 
 min. at 
100Vdc ±15V
Dimensions: Inches (mm)
UM-1 (
ABU)
UM-4 (
ABU4)
UM-5 (
ABU5)
0.315 (8.0)
0.185 (4.7)
0.236 (6.0)
6.0MHz  < F <  7.0MHz
7.0MHz  < F <  8.0MHz
8.0MHz  < F < 10.0MHz
- T (Tape 
&
 Reel)
- P (Foam)
-TY(Tray Packing)
FEATURES:
 Compact size.          
  Excellent frequency temperature characteristics across a wide temperature range.
  High precision crystal.   
  Hermetically sealed.    
7.8 x 3.1 x 8.0 mm
-A for -10°C to + 60°C
-B for -20°C to + 70°C
-C for -30°C to + 70°C
-N for -30°C to + 85°C
-D for -40°C to + 85°C
-F(for Fundamental AT >25 MHz)
CERTIFIED
NOTE: Left blank if standard 
  
All specifications and markings subject to change without notice
29 Journey    Aliso Viejo, CA 92656    USA
(949) 448-7070        F
AX
: (949) 448-8484
E-
MAIL
:
 abinfo
@
abracon.com  
I
NTERNET
 A
DDRESS
: 
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ISO 9001 /  QS 9000
ABRACON
C O R P O R A T I O N
32