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2
JANUARY 1999 - REVISED OCTOBER 2003
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
7EL2 Primary Protector
Absolute Maximum Ratings, TA = 25 °C (Unless Otherwise Noted)
Electrical Characteristics for the T and R Terminals, TA = 25 °C (Unless Otherwise Noted)
Rating
Symbol
Value
Unit
Non-repetitive peak on-state pulse current (see Notes 1 and 2)
ITSP
A
5/310 s (ITU-T K28, 10/700 s voltage wave shape)
-20 °C to 65 °C400
10/1000 s (GR-974-CORE, 10/1000 s voltage wave shape)
-20 °C to 65 °C300
Non-repetitive peak on-state current (see Note 1)
ITSM
10
A rms
full sine wave, 50/60 Hz, 1 s
-40 °C to 65 °C
Junction temperature
TJ
-40 to +150
°C
Storage temperature range
Tstg
-40 to +150
°C
NOTES: 1. The surge may be repeated after the device has returned to thermal equilibrium.
2. Most PTTs quote an unloaded voltage waveform. In operation the 7EL2 essentially shorts the generator output. The resulting
loaded current waveform is specified.
Parameter
Test Conditions
Min
Typ
Max
Unit
V(BR)
Breakdown Voltage
I(BR) = ±20 mA, (see Note 3)
-40 °C to 65 °C
±245
V
V(BO) Breakover voltage
dv/dt = ±0.2 V/s, RSOURCE > 200
+15 °C to 25 °C
-40 °C to 65 °C
±265
±400
V
V(BO)
Impulse breakover
voltage
100 V/s ≤ dv/dt ≤ ±1000 V/s,
di/dt ≤ 10 A/s
-40 °C to 65 °C
±400
V
Impulse reset
Sources are 52.5 V O.C., 260 mA S.C. and
135 V O.C., 200 mA S.C.
on-state current 25 A, 10/1000 s impulse
-40 °C to 65 °C20
ms
ID
Off-state current
VD = ±50 V (see Note 4)
VD = ±200 V
-40 °C to 65 °C
±0.5
±10
A
Coff
Off-state capacitance
f = 1 MHz,
Vd =1Vrms, VD =0,
-40 °C to 65 °C
200
pF
NOTES: 3. Meets Telcordia GR-974-CORE Issue 2, December 1999 - Rated Voltage Test (4.7).
4. This device is sensitive to light. Suggest that this parameter be measured in a dark environment.