Isolated Flyback Transformers

  • Range of physical sizes, inductance and current values, turns ratios and isolation voltages.
  • Designed for use with many Linear Technology applications.
  • Some designed to meet medical isolation and/or intrinsic safety construction requirements.
  • Variations of the following examples quickly available from BH Electronics.

400 to 4,000 VAC

BH PART NUMBER PACKAGE STYLE SCHE-MATIC TURNS RATIO ISOLATION VOLTAGE LOC (uH) INDUCTANCE L (uH) at RATED I (ADC) LEAKAGE L (uH) DCR PRI (Ohms) DCR SEC (Ohms) LINEAR TECH APPS
L16-0017 1 1 1:1 1,500 VAC 13.1 10.4 @ 2.10 0.35 0.76 0.76 LT3663fb
L16-1320 1 1 1:1 1500 VAC 20.9 16.7 @ 1.69 0.5 1.2 1.2 LT3573
L16-1323 1 1 1:1 1,500 VAC 28.1 22.5 @ 1.46 0.37 1.3 1.3 LT3573
L16-1328 1 1 1:1 1,500 VAC 42.3 33.8 @ 1.19 0.4 1.54 1.54 LT3573
L11-1317 2 1 1:1 1,500 VAC 24.8 19.8 @ 1.22 0.95 0.4 0.4 LT3573
L11-0059 2 1 3:1 500 VDC 20.1 16.1 @ 2.50 0.78 0.265 0.026 LT3573
L11-0060 2 1 1:1 1,500 VAC 15.8 12.7 @ 1.52 0.25 0.14 0.14 LT3663fb
L11-0066 2 1 4:1 3,000 VAC 167 139 @ 0.50 3 2.094 0.857 TBD1
L11-0067 2 1 4:1 1,500 VAC 230 178 @ 0.41 2.16 1.31 0.15 LT8300
L10-0111 3 1 1:2 1,000 VAC 150 141 @ 1.10 1.29 0.64 2.94 LTM2892
L10-0112 3 1 4:1 1,500 VAC 230 183 @ 0.91 3.38 1.45 0.126 LT8300
L10-0114 3 1 1:4 1,000 VAC 200 160 @ 1.00 1.27 0.96 17.73 LT8300
L10-0115 3 1 4:1 1,500 VAC 500 400 @ 0.70 10 2 0.9 LT8300
L10-0116 3 1 6:1 1,500 VAC 500 400 @ 0.70 7.32 2 0.059 LT8300
L10-0118 3 1 3:1 1,500 VAC 33.9 27.1 @ 2.37 0.65 0.146 0.017 LT3573
L10-1317 3 1 1:1 3,000 VAC 13.6 10.9 @ 4.20 0.25 0.182 0.182 LT3575
L10-1019 3 1 1:1 500 VDC 18.3 14.6 @ 3.20 0.25 0.078 0.078 LT3573
L10-1319 3 1 1:1 3,000 VAC 18.3 14.6 @ 3.20 0.22 0.24 0.24 LT3573
L10-1022 3 1 1:1 500 VDC 29.6 23.6 @ 2.50 0.3 0.118 0.118 LT3574
L10-1322 3 1 1:1 3,000 VAC 29.6 23.6 @ 2.50 0.3 0.266 0.266 LT3574
L10-0108 3 1 3:1 3,000 VAC 27.5 22.0 @ 2.50 1.2 0.15 0.04 LT3573
L10-01102 3 1 1:1 4,000 VAC 24.8 19.8 @ 1.22 0.35 1.76 1.76 LT3574
L00-3126 4 2 1:6 1,600 VAC 80 0.60A 0.38 0.155 9.43 LT3574
L00-3181 5 3 4:1:1:1 1,500 VAC 300 240uH NOM @ 0.50A 2 0.693 0.236 LT3511
L00-3250 7 See Print 1:0.34:0.34 1500 VAC 222 170 @0.50 8.0 1.6 0.64 - 0.45 LT3752EFE, LT8311EFE, DEMO1994A
  1. Can be modified to meet UL/IEC 60601-1 medical isolation requirements for creepage and clearance
  2. See BH website, www.bhelectronics.com, for latest information on Isolated Flyback Transformers.

Qtr-Pak™

Isolated Flyback Transformer Series

3,000VAC isolated flyback transformers can be made from this family with LOC values of the L10-1004 to L101048 on a “quick turn” basis. Part numbers will be listed as L10-13xx for higher isolation versions of the standard L10-10xx QTR-Paks. To compare these parts see the following typical examples:

PART NUMBER LOC Isolation Typ. LOC @ Biased Max Current DCR (per winding)
L10-10191 18.25 100VDC 14.6uH @ 3.24ADC .090 Ohms
L10-13192 18.25 1,500VAC 14.6uH @ 3.24ADC .240 Ohms
  1. Tested to 100VDC; 500VDC NOM.
  2. If higher isolation is needed in this structure, contact BH Electronics.

8th-Pak™

Isolated Flyback Transformer Series

1,500VAC isolated flyback transformers can be made from this family with LOC values of L11-1006 to L11-1027 on a “quick turn” basis. Part numbers will be listed as L11-13xx for higher isolation versions of the standard L11-10xx 8th-Paks. To compare these parts see the following typical examples:

PART NUMBER LOC Isolation Typ. LOC @ Biased Max Current DCR (per winding)
L11-10171 24.8 100VDC 19.8uH @ 1.22ADC .180 Ohms
L11-13172 24.8 1,500VAC 19.8uH @ 1.22ADC .400 Ohms
  1. Tested to 100VDC, 400VAC NOM.
  2. If higher isolation is needed in this structure, contact BH Electronics.

Mini-Pak™

Isolated Flyback Transformer Series

1,500VAC isolated flyback transformers can be made from this family with LOC values of L16-1000 to L16-1028 on a “quick turn” basis. Part numbers will be listed as L16-13xx for higher isolation versions of standard L16-10xx Mini-Paks. To compare these parts see the following typical examples:

PART NUMBER LOC Isolation Typ. LOC @ Biased Max Current DCR (per winding)
L16-1023 28.1 100VDC1 22.5uH @ 1.46ADC .676 Ohms
L16-1323 28.1 1,500VAC2 22.5uH @ 1.46ADC 1.300 Ohms
  1. Tested to 100VDC, 400VAC NOM.
  2. If higher isolation is needed in this structure, contact BH Electronics.

ul/ieC isolation transformers or other structures

Isolated Flyback Transformer Series

BH Electronics is a specialist in the design and manufacture of isolation transformers compliant with Agency Specifications including UL / IEC 60601-1 and UL 2601 (Medical), UL / IEC 61010-1 (Laboratory Equipment), UL / IEC 60950 and UL 1950 (Information Technology). Contact BH Electronics to discuss your application.

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