1N5305 ON Semiconductor, 1N5305 Datasheet - Page 3

• Manufacturer Part Number: 1N5305
• Manufacturer: ON Semiconductor

Specifications of 1N5305

• Configuration: Single
• Limiting Voltage (max): 1.85V
• Peak Operating Voltage (max): 100V
• Maximum Regulator Current: 2.2mA
• Minimum Dynamic Impedance: 395kohm
• Knee Impedance (min): 61kohm
• Operating Temperature Classification: Military
• Lead Free Status / RoHS Status: Not Compliant

9-4
1.5 Watt DC Power Data Sheet
–100
–20
–40
–60
–80
300
250
200
150
100
0.7
0.5
0.3
0.2
0.1
10
50
7
5
3
2
1
5
4
3
2
1
0
0.1
–2
0
Z K @ V K
T J = 25 C
POV = 100 V
(DATA OBTAINED
FROM PULSE TESTS)
–1
REVERSE
Figure 2. Typical Thermal Resistance
Figure 1. Typical Current Regulator
0.2
0.2
0
V AK , ANODE-CATHODE VOLTAGE (VOLTS)
20
L, LEAD LENGTH (INCHES)
0.3
V L @ I L
Characteristics
0.4
40
FORWARD
I P & Z T @ V T
60
0.5
POINT OF LEAD TEMPERATURE
THROUGH THE CATHODE LEAD)
(MOST HEAT CONDUCTION IS
0.6
0.7
80
POV
MEASUREMENT
ANODE
L
1N5283 through 1N5314
Figure 3. Typical Forward Characteristics
100
1
+
V AK , ANODE-CATHODE VOLTAGE (VOLTS)
120
0.8
CATHODE
–
L
140
2
160
1
3
it is necessary to determine junction temperature, T J , under specific
operating conditions to calculate the value of the diode current. The
following procedure is recommended:
extremes of T J may be computed. Using the information on Figures
4 and 5, changes in current may be found. To improve current
regulation, keep V AK low to reduce P D and keep the leads short,
especially the cathode lead, to reduce JL .
POV —
V AK —
As the current available from the diode is temperature dependent,
For circuit design limits of V AK , limits of P D may be estimated and
V K —
V T —
Z K —
V L —
Z T —
I D —
I P —
I L —
l —
Lead Temperature, T L , shall be determined from:
where
and
in common use, and for printed circuit-board wiring.
Junction Temperature, T J , shall be calculated from:
where
LA is generally 30–40 C/W for the various clips and tie points
5
Diode Current.
Limiting Current: 80% of I P minimum used to determine
Limiting voltage, V L .
Pinch-off Current: Regulator current at specified Test
Voltage, V T .
Peak Operating Voltage: Maximum voltage to be applied
to device.
Current Temperature Coefficient.
Anode-to-cathode Voltage.
Knee Impedance Test Voltage: Specified voltage used to
establish Knee Impedance, Z K .
Limiting Voltage: Measured at I L , V L , together with Knee
AC Impedance, Z K , indicates the Knee characteristics of
the device.
Test Voltage: Voltage at which I P and Z T are specified.
Knee AC Impedance at Test Voltage: To test for Z K , a 90
Hz signal V K with RMS value equal to 10% of test voltage,
V K , is superimposed on V K :
where i K is the resultant ac current due to V K .
To provide the most constant current from the diode, Z K
should be as high as possible; therefore, a minimum value
of Z K is specified.
AC Impedance at Test Voltage: Specified as a minimum
value. To test for Z T , a 90 Hz signal with RMS value equal
to 10% of Test Voltage V T , is superimposed on V T .
7
P D is power dissipation.
Z K = V K /i K
LA is lead-to-ambient thermal resistance
JL is taken from Figure 2.
SYMBOLS AND DEFINITIONS
T L = LA P D + T A
T J = T L + JL P D
10
APPLICATION NOTE
Motorola TVS/Zener Device Data
20
30
50
1N5313
1N5309
1N5305
1N5298
1N5290
70
100