BH Electronics
Series 505 SCR Trigger Transformers
STANDARD CASE STYLES
CASE NO.
35
36
37
55
PCB MOUNTING
YES
YES
YES
YES
ISOLATION VOLTAGE
1600 VRMS 60HZ
1600 VRMS 60HZ
1600 VRMS 60HZ
2500 VRMS 60HZ
TEMPERATURE RANGE
-10°C TO +70°C
0°C TO 60°C
0°C TO 60°C
0°C TO 60°C
ENCAPSULATED
YES
YES
NO
YES
LEAD SIZE
20 AWG
20 AWG
20 AWG
A
20 AWG
• Use in SCR, TRIAC, and MOSFET
Drive Circuits
• Four Case Styles
• 1600 or 2500 VRMS Isolation
• Tinned Copper Leads
• Low Ciw To Prevent False Triggering
• Order by Part Number 505 - XX YY
STANDARD ELECTRICAL SPECIFICATIONS
ELECTRICAL
PARAMETER
NUMBER
00
01
02
03
04
05
06
07*
08
09
10
11
12
13
TURNS
RATIO
1:1
1:1
1:1
1:1
1:1:1
1:1:1
1:1:1
1:1:1
2:1
2:1
2:1:1
2:1:1
5:1
5:1:1
PRIMARY
INDUCTANCE
(mH - MIN.)
.25
1.0
5.0
20.0
.25
1.0
5.0
20.0
1.0
5.0
1.0
5.0
20.0
20.0
PRIMARY
ET CONSTANT
(V - µsec MIN.)
45
90
180
360
45
90
180
360
90
180
90
180
360
360
INTERWINDING
CAPACITANCE
(PF - MAX.)
20
30
30
50
20
30
30
50
30
30
30
30
50
50
LEAKAGE
INDUCTANCE
(µH - MAX.)
5
20
45
200
5
20
45
200
40
60
40
60
200
200
•AVAILABLE IN "55" STYLE CASE ONLY
Y
STANDARD CASE STYLES
35
3
5
500
MAX
1
2
4
6
3
4
1
2
750
MAX
2 0 TYP
#20 AWG TINNED COPPER LEADS
36
1
2 Primary
3
4 Secondary
Two Winding Configuration
1
3
5
2 Primary
4 Secondary
6 Tertiary
5
600 DIA
6
1
2
4
3
500
TYP
500
MAX
750
MAX
48
TYP
Three Winding Configuration
#20 AWG TINNED
COPPER LEADS
37
3
5
650
MAX
1
2
4
6
3
4
500 MAX
1
2
650
MAX
2 0 TYP
#20 AWG TINNED COPPER LEADS
STRAIGHT OR FORMED LEADS
55
750 MAX
1
2 Primary
3
4 Secondary
Two Winding Configuration
1
3
5
2 Primary
4 Secondary
6 Tertiary
2
600
4
500
BOTTOM VIEW
Two Winding
3
1
300
4
300
6
500
BOTTOM VIEW
Three Winding
5
3
2
1
500
TYP
800 MAX
900
MAX
Three Winding Configuration
#20 AWG TINNED
COPPER LEADS
TWENTY
/
BH ELECTRONICS
www.bhelectronics.com
BH Electronics
Power Control Transfor mers
•
•
•
•
•
•
Ideal for use as Trigger Transformers in MOSFET, SCR and Triac Circuits
High Isolation Voltages
ET Products to 1500 v µ sec
Fully Encapsulated
Low Interwinding Capacitance
Hi-Pot Tested to 2500 VAC
• See Section 3 on Page 7 for Product Application Information
BH
PART
NUMBER
505-1914
505-5570
505-5571
505-5572
505-5573
505-5574
505-5575
505-5576
505-5577
505-5578
505-5579
505-5580
505-5581
505-5582
505-5583
505-5584
505-5585
TURNS
RATIO
1:3 3:1
1:1
1:1:1
1:1
1:1:1
1:1
1:1:1
1:1
1:1:1
2:1
2:1:1
2:1
2:1:1
2:1
2:1:1
5:1
5:1:1
PRIMARY
INDUCTANCE
(mH-MIN.)
0.006
.25
.25
1:0
1.0
5.0
5.0
20.0
20.0
1:0
1.0
5.0
5.0
20:0
20:0
20:0
20:0
PRIMARY
ET CONSTANT
(V µ SEC MIN.)
—
45
45
90
90
180
180
360
360
90
90
180
180
360
360
360
360
LEAKAGE
INDUCTANCE
(µ H MAX.)
0.1
5
5
20
20
45
45
45
75
40
60
40
45
200
200
200
200
DCR
PRI.
½
MAX
—
1.0
1:0
2:0
2.0
3:0
3.0
5.0
3.0
2.0
2.0
3.0
3.0
5.0
3.0
5.0
5.0
DCR
SEC.
½
MAX.
—
1.0
1:0
2:0
2.0
3:0
3.0
5.0
3.0
1.0
1.0
2.0
2.0
3.0
2.0
2.0
2.0
DCR
TER.
½
MAX.
—
N/A
1:0
N/A
2.0
N/A
3.0
N/A
3.0
N/A
1.0
N/A
2.0
N/A
2.0
N/A
2.0
Ciw
(pf MAX.)
4
20
20
30
30
30
30
50
50
30
30
30
30
75
75
50
50
SCHEMATIC PKG.
STYLE
STYLE
C
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
SCHEMATIC A
(PINS 3 & 4 REMOVED)
1
5
6
SCHEMATIC C
T1
8
PKG. STYLE 1
.75 MAX.
PKG. STYLE 2
1
2
PRI.
SEC.
0.400 MAX.
.80
MAX.
.640
SCHEMATIC B
PRI.
SEC.
TER.
2
5
6
4
3
7
.50
MAX.
0.260 MAX.
0.150 MIN.
.100
.50
1
2
1
3
5
4
6
8
5
.60
.30
0.500
4
0.300
.020 DIA.
( 8 PLCS)
.200
( 4 PLCS)
1
2
3
T2
6
4
5
.90
MAX.
www.bhelectronics.com
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