1SMB5921B Diodes Inc, 1SMB5921B Datasheet - Page 2

• Manufacturer Part Number: 1SMB5921B
• Description: DIODE, ZENER, 6.8V, 3W, SMB
• Manufacturer: Diodes Inc

Specifications of 1SMB5921B

• Zener Voltage Vz Typ: 6.8V
• Power Dissipation Pd: 3W
• Operating Temperature Range: -65°C To +150°C
• Diode Case Style: SMB
• No. Of Pins: 2
• Rohs Compliant: Yes

Maximum Ratings
Thermal Characteristics
Electrical Characteristics
Forward Voltage @I
Zener Current (see Table page 2)
Power Dissipation @T
Derate Above 75°C (Note 2)
Thermal Resistance - Junction to Terminal (Note 2)
Power Dissipation @T
Derate Above 25°C (Note 2)
Thermal Resistance - Junction to Ambient (Note 2)
Operating and Storage Temperature Range
Notes:
1SMB5920B – 1SMB5939B
Document number: DS32125 Rev. 4 - 2
1SMB5920B
1SMB5921B
1SMB5922B
1SMB5923B
1SMB5924B
1SMB5925B
1SMB5926B
1SMB5927B
1SMB5928B
1SMB5929B
1SMB5930B
1SMB5931B
1SMB5932B
1SMB5933B
1SMB5934B
1SMB5935B
1SMB5936B
1SMB5937B
1SMB5938B
1SMB5939B
Number
Type
3. Device mounted on FR-4 PCB; pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
4. Short duration pulse test used to minimize self-heating effect.
5. ZENER IMPEDANCE (Z
http://www.diodes.com.
specified limits are for I
Marking
Code
B920
B921
B922
B923
B924
B925
B926
B927
B928
B929
B930
B931
B932
B933
B934
B935
B936
B937
B938
B939
F
= 200mA
A
Characteristic
Characteristic
L
= 25°C
= 75°C
Min (V)
@T
10.45
12.35
14.25
25.65
31.35
37.05
5.89
6.46
7.12
7.79
8.64
11.4
15.2
17.1
20.9
22.8
28.5
34.2
9.5
19
A
Z(ac)
Z
= 25°C unless otherwise specified
) DERIVATION Z
Range (Note 4)
Zener Voltage
= 0.1 I
V
Typ (V)
@T
Z @
Z(dc)
6.2
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
A
I
ZT
with the ac frequency = 60 Hz.
= 25°C unless otherwise specified
ZT
Max (V)
11.55
13.65
15.75
28.35
34.65
40.95
and Z
6.51
7.14
7.88
8.61
9.56
10.5
12.6
16.8
18.9
23.1
25.2
31.5
37.8
21
ZK
are measured by dividing the ac voltage drop across the device by the ac current applied. The
Current
Test
60.5
55.1
45.7
41.2
37.5
34.1
31.2
28.8
23.4
20.8
18.7
15.6
13.9
12.5
11.4
10.4
mA
9.6
I
50
25
17
www.diodes.com
ZT
2 of 5
Symbol
Symbol
T
Maximum Zener Impedance (Note 5)
J,
R
R
Z
I
V
P
P
ZM
T
θ JT
θ JA
ZT @
D
D
F
STG
17.5
2.5
3.5
4.5
5.5
6.5
10
12
14
19
23
28
33
38
45
Ω
2
3
4
7
9
I
ZT
200
200
400
400
500
500
550
550
550
600
600
650
650
650
700
700
750
800
850
900
Ω
Z
ZK @
-65 to +150
P
Value
Value
1SMB5920B – 1SMB5939B
D
550
228
I
1.2
3.0
4.4
40
25
ZK
/ V
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
mA
0.5
0.5
0.5
1
1
Z
Reverse Current
µA
5
5
5
5
5
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Maximum
(Note 4)
I
R @
V
R
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
9.9
5.2
6.5
8.4
9.1
V
4
6
7
8
mW/°C
mW/°C
°C/W
°C/W
© Diodes Incorporated
Unit
Unit
mW
mA
°C
W
V
February 2011
I
ZM Max
241
220
200
182
164
150
136
125
115
100
mA
93
83
75
68
62
55
50
45
41
38