ROHM RLD78NZH2

RLD78NZH2
Laser diodes
AlGaAs laser diodes
RLD78NZH2
The RLD78NZH2 is the best suitable laser diode for high-speed laser printer and PPC. The power limits is 10mW to print
at high-speed.
zExternal dimensions (Unit : mm)
zApplications
High-speed laser printers
PPC
Equivalent circuit diagram
φ3.6
1.0±0.1
zFeatures
1) Absolutemax. output power
10mW.
2) High-precision, compact
package. (φ5.6mm)
3) Low droop.
4) Can be driven by single power
supply (N type).
φ5.6
+0
−0.025
Glass window
(3)
N
t
y
p
e
L.D.
P.D.
(1)
(2)
Chip
1.2±0.1
6.5±0.5
2.3
Optical distance
1.35
φ4.4+0
φ1.0Min.
90°±2°
0.4±0.1
3−φ0.45
(3)
(2)
(1)
Symbol
Limits
Unit
Output
PO
10
mW
Reverse
voltage
zAbsolute maximum ratings (Tc=25°C)
VR
2
V
Parameter
Laser
PIN photodiode
VR (PIN)
30
V
Operating temperature
Topr
−10 to +60
°C
Storage temperature
Tstg
−40 to +85
°C
1/2
RLD78NZH2
Laser diodes
zElectrical and optical characteristics (Tc=25°C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Threshold current
Ith
−
20
45
mA
Operating current
Iop
−
40
65
mA
PO=6mW
Operating voltage
Vop
−
1.9
2.3
V
PO=6mW
η
0.2
0.4
0.8
mW/mA
Differential efficiency
Monitor current
Conditions
−
4mW
I(6mW) − I(2mW)
PO=6mW
Im
0.2
0.4
1.0
mA
Parallel divergence angle
θ //∗
8
11
15
deg
Perpendicular divergence angle
θ ⊥∗
25
30
38
deg
Parallel deviation angle
∆φ //
−
−
±2
deg
Perpendicular deviation angle
∆φ ⊥
−
−
±3
deg
Emission point accuracy
∆X
∆Y
∆Z
−100
−
+100
µm
λ
770
785
795
nm
PO=6mW
∆P
−
5
10
%
PO=6mW
Peak emission wavelength
Droop
PO=6mW
−
∗θ// and θ⊥ are defined as the angle within which the intensity is 50% of the peak value.
zElectrical and optical characteristic curves
vf Po
[v] [mW]
3
10
0
[ IL ]
Im [mA]
1
.5
Se
[W/A]
1.5
2
1
1
1
25°C
50°C
60°C
70°C
0.8
.8
.8
80°C
90°C
0.6
.6
.6
0.4
.4
.4
0.2
.2
.2
I-L
I-Vf
8
2
6
4
1
I-η
2
0
0
100
0
0
25
50
75
0 −60
−40
−20
0
20
40
60
0 −60
−40
−20
0
20
40
60
IF (mA)
ANGLE (deg.)
ANGLE (deg.)
Fig.1 Dependence of I-L on temperature
Fig.2 Parallel far field pattern
Fig.3 Perpendicular far field pattern
20
18
16
Droop (%)
14
12
60°C
10
8
25°C
6
4
2
00
2
4
6
8
10
12
Po (mW)
Fig.4 Dependence of droop on
output power and temperature
2/2
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1