Document
Philips Semiconductors
Preliminary specification
Breakover diodes
BR211SM series
GENERAL DESCRIPTION
A range of bidirectional, breakover diodes in a two terminal, surface mounting, plastic envelope. These devices feature controlled breakover voltage and high holding current together with high peak current handling capability. Typical application is transient overvoltage protection in telecommunications equipment.
QUICK REFERENCE DATA
SYMBOL V(BO) IH ITSM PARAMETER BR211SM-140 to BR211SM-280 Breakover voltage Holding current Non-repetitive peak current MIN. 140 150 MAX. 280 40 UNIT V mA A
OUTLINE - SOD106
SYMBOL
LIMITING VALUES
Limiting values in accordance with the Absolute Maximum System (IEC 134). SYMBOL VD ITSM1 ITSM2 I2t dIT/dt Ptot PTM Tstg Ta Tvj PARAMETER Continuous voltage Non repetitive peak current Non repetitive on-state current I2t for fusing Rate of rise of on-state current after V(BO) turn-on Continuous dissipation Peak dissipation Storage temperature Operating ambient temperature Overload junction temperature 10/320 µs impulse equivalent to 10/700 µs, 1.6 kV voltage impulse (CCITT K17) half sine wave; t = 10 ms; Tj = 70 ˚C prior to surge tp = 10 ms tp = 10 µs Ta = 25˚C tp = 1 ms; Ta = 25˚C off-state on-state CONDITIONS MIN. - 40 MAX. 75% of V(BO)typ 40 15 1.1 50 1.2 50 150 70 150 UNIT V A A A2s A/µs W W ˚C ˚C ˚C
THERMAL RESISTANCES
SYMBOL Rth j-sp Rth j-a Zth j-a PARAMETER Thermal resistance junction to solder point Thermal resistance junction to ambient Thermal impedance junction to ambient CONDITIONS MIN. pcb mounted; minimum footprint tp = 1 ms TYP. 100 2.62 MAX. 12 UNIT K/W K/W K/W
August 1996
1
Rev 1.100
Philips Semiconductors
Preliminary specification
Breakover diodes
BR211SM series
STATIC CHARACTERISTICS
Tj = 25 ˚C unless otherwise stated SYMBOL V V(BR) V(BO)
1 TM
PARAMETER On-state voltage Avalanche voltage (min) Breakover voltage (max)
CONDITIONS ITM = 2 A I(BR) = 10mA I ≤ IS, tp = 100 µs BR211SM-140 BR211SM-160 BR211SM-180 BR211SM-200 BR211SM-220 BR211SM-240 BR211SM-260 BR211SM-280
MIN. 123 140 158 176 193 211 228 246 150 100 10 -
TYP. 140 160 180 200 220 240 260 280 +0.1 200 -
MAX. 2.5 157 180 202 224 247 269 292 314 1000 10
UNIT V V V V V V V V V %/K mA mA mA µA
S(br) IH2 IS3 ID4
Temperature coefficient of V(BR) Holding current Tj = 25˚C Tj = 70˚C Switching current tp = 100 µs Off-state current VD = 85% V(BR)min, Tj = 70˚C
DYNAMIC CHARACTERISTICS
Tj = 25 ˚C unless otherwise stated SYMBOL dVD/dt Cj PARAMETER Linear rate of rise of off-state voltage that will not trigger any device Off-state capacitance CONDITIONS V(DM) = 85% V(BR)min; Tj = 70 ˚C VD = 0 V; f = 1 kHz to 1 MHz MIN. TYP. MAX. 2000 100 UNIT V/µs pF
current IT
VT
current 100% 90%
IS
ITSM
IH ID
V(BR) I(BR) VD voltage
V(BO)
50%
30%
0
Symbol Symmetric BOD
time 10us 700us
Fig.1. Definition of breakover diode characteristics.
Fig.2. Test waveform for high voltage impulse (ITSM1) according to CCITT vol IX-Rec K17.
1 Measured under pulsed conditions to avoid excessive dissipation 2 The minimum current at which the diode will remain in the on-state 3 The avalanche current required to switch the diode to the on-state 4 Measured at maximum recommended continuous voltage. Relative humidity < 65%. August 1996 2 Rev 1.100
Philips Semiconductors
Preliminary specification
Breakover diodes
BR211SM series
20
ITSM / A
BR211 I ITSM2 time
100 ID / uA
15
10
10
max
1
5
0
0.1
1 10 100 Number of impulses 1000 10000
-40
-20
0
20 40 Tj / C
60
80
100
Fig.3. Maximum permissible non-repetitive on-state current based on sinusoidal currents; f = 50 Hz; device triggered at the start of each pulse; Tj = 70˚C prior to surge.
V(BR)(Tj) V(BR)(25 C)
Fig.6. Maximum off-state current as a function of temperature.
10 IS / A
1.06 1.04 1.02 1.00 0.98 0.96 0.94 0.92 0.90
1
max typ
0.1
0.01
min
-40
-20
0
20 40 Tj / C
60
80
100
0.001 -50
0
50 Tj / C
100
150
Fig.4. Normalised avalanche breakdown voltage V(BR) and V(BO) as a function of temperature.
IT / A Tj = 25 C Tj = 150 C 15
Fig.7. Switching current as a function of junction temperature.
20
10 IH / A
1
10
typ
max
0.1
min
5
0.01
0 1
2
VT / V
3
4
0.001 -50
0
50 Tj / C
100
150
Fig.5. On-state current as a function of on-state voltage; tp = 200 µs to avoid excessive dissipation.
Fig.8. Minimum holding current as a function of temperature.
August 1996
3
Rev 1.100
Philips Semiconductors
Preliminary specification
Breakover diodes
BR211SM series
100
Cj / pF
1000
Zth / (K/W)
BR211
typ
BR211-140
100
BR211-280
10
10
1
P D
tp t
1 1
10 VD / V
100
1000
0.1 10us
1ms
0.1s tp / s
10s
1000s
Fig.9. Typical junction capacitance as a function of off-state voltage, f = 1 MHz; Tj = 25˚C.
Fig.10. Transient thermal impedance. Zth j-a = f(tp).
August 1996
4
Rev 1.100
Philips Semiconductors
Preliminary specification
Breakover diodes
BR211SM series
MECHANICAL DATA
Dimensions in mm Net Mass: 0.2 g.