MMBZ...VDA and C Series
VISHAY
Vishay Semiconductors
Small Signal Zener Diodes, Dual
Features
• Dual Silicon Planar Zener Diodes with Common
Cathode or Common Anode configurations.
MMBZ15VDC
MMBZ27VDC
MMBZ15VDA
MMBZ27VDA
• Dual package provides for Bidirectional or sepa-
rate unidirectional configurations.
3
3
• The dual configurations protect two separate lines
with only one device.
• Peak Power: 40 W @1 ms (Bidirectional) .
• Ideal for ESD Protection.
1
2
1
2
Common Cathode
Common Anode
• For bidirectional operation, circuit connected to
pins 1 and 2. For unidirectional operation, circuit
connected to pins 1 and 3 or pins 2 and 3.
18654
Marking:
Mechanical Data
MMBZ15VDC = TC5
MMBZ27VDC = TC7
MMBZ15VDA = TA5
MMBZ27VDA = TA7
Case: SOT-23 Plastic case
Weight: approx. 8.8 mg
Terminals: Solderable per MIL-STD-750, method
2026
Packaging Codes/Options:
GS18/ 10 k per 13 " reel (8 mm tape), 10 k/box
GS08/ 3 k per 7 " reel (8 mm tape), 15 k/box
Absolute Maximum Ratings
T
= 25 °C, unless otherwise specified
amb
Parameter
Test condition
Symbol
Value
Unit
W
1)
4)
P
PK
Peak power dissipation
Power dissipation
40
T
= 25 °C
P
225
1.8
mW
mW/°C
amb
tot
2)
Derate above 25 °C
= 25 °C
on FR-5 Board
Power dissipation
T
P
300
2.4
mW
mW/°C
amb
tot
3)
Derate above 25 °C
on Alumina Substrate
1)
Nonrepetitive current pulse per Figure 2 and derate above T
FR-5 = 1.0 x 0.75 x 0.62 in.
= 25 °C per Figure 3.
amb
2)
3)
4)
Alumina = 0.4 x 0.3 x 0.024 in., 99.5 % alumina.
The MMBZ6V8DC/A is rated at 24 V.
Thermal Characteristics
T
= 25 °C, unless otherwise specified
amb
Parameter
Test condition
Symbol
Value
556
Unit
Thermal resistance junction to ambiant air
Operating and storage temperature range
R
°C/W
thJA
T , T
- 55 to + 150
°C
j
stg
Document Number 85808
Rev. 1.4, 08-Jul-04
www.vishay.com
1