摘要
This application note lists vender transformers that meet the specifications required for use with Maxim Single-Chip Transceivers (SCTs) and Line Interface Units (LIUs). Recommended transformers are made based on the following transformer specifications: turns ratio, primary inductance, leakage inductance, interwinding capacitance, and DC resistance for both 5V and 3.3V operation. Actual results are dependant on the integrity of the PCB design and other termination circuitry and should be verified by the customer.
Introduction
This application note applies to the following products:
| T1/E1 LIUs | T1 SCTs | E1 SCTs | T1/E1 SCTs | T1/E1 Ethernet/Serial TDM | T3/E3 LIUs | T3/E3 SCTs |
| DS2148 | DS2151 | DS2153 | DS2156 | DS33R11 | DS3150 | DS3170 |
| DS21348 | DS2152 | DS2154 | DS2155 | DS33R41 | DS3151 | DS3171 |
| DS21Q48 | DS21352 | DS21354 | DS21Q55 | DS3152 | DS3172 | |
| DS21Q348 | DS21552 | DS21554 | DS21455 | DS3153 | DS3173 | |
| DS21448 | DS21Q552 | DS21Q554 | DS21458 | DS3154 | DS3174 | |
| DS2149 | DS21Q352 | DS21Q354 | DS26502 | DS3251 | DS3181 | |
| DS21349 | DS2196 | DS21Q59 | DS26503 | DS3252 | DS3182 | |
| DS26303 | DS21Q58 | DS26504 | DS3253 | DS3183 | ||
| DS26324 | DS21Q50 | DS26518 | DS3254 | DS3184 | ||
| DS26334 | DS26519 | DS32504 | ||||
| DS26521 | DS32506 | |||||
| DS26522 | DS32508 | |||||
| DS26524 | DS32512 | |||||
| DS26528 |
Table 1 shows the specifications for our 5V devices and Table 2 shows the specifications for our 3.3V devices. The specifications for selecting an appropriate transformer are given in the data sheets for each device and repeated below for simplicity. Table 3 lists the transformer part numbers from multiple vendors and matches them with the parts listed above.
Table 1. Transformer Specifications for 5V Operation
| Specification | Recommended Value |
| Turns Ratio, 5V Applications | 1:1 (RX) and 1:15 or 1:1.36 (TX) ±5% |
| Primary Inductance | 600µH minimum |
| Leakage Inductance | 1.0µH maximum |
| Interwinding Capacitance | 40pF maximum |
| Primary (Device Side) | 1.2Ω maximum |
| Secondary | 1.2Ω maximum |
| Primary (Device Side) | 1.2Ω maximum |
| Secondary | 1.2Ω maximum |
Table 2. Transformer Specifications for 3.3V Operation
| Specification | Recommended Value |
| Turns Ratio, 3.3V Applications | 1:1 (RX) and 1:2 (TX) ±2% |
| Primary Inductance | 600µH minimum |
| Leakage Inductance | 1.0µH maximum |
| Interwinding Capacitance | 40pF maximum |
| Primary (Device Side) | 1.0Ω maximum |
| Secondary | 2.0Ω maximum |
| Primary (Device Side) | 1.5Ω maximum |
| Secondary | 1.2Ω maximum |
Table 3. Transformer Part Information
| Vendor | Part | Turns Ratio | No. of Ports |
Package Type | No. of Pins |
Temp Range |
Hierarchy | Maxim Device |
| Pulse | PE-65388 | 1:1.15CT | TX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 |
| PE-65586 | 1:1.36CT | TX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 | |
| PE-65351 | 1:2CT | TX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 | |
| PE-64936 | 1CT:1 | RX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 | |
| PE-65565 | 1:1.15CT and 1:2CT | 1 | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| TX1315 | 1CT:1CT | RX only | Surface Mount | 6 | -40°C to +85°C |
T1/E1 | DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 | |
| TX1320 | 1CT:1.36CT | TX Only | Surface Mount | 6 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 | |
| TX1277 | 1CT:1CT and 1CT:2CT | 1 | Surface Mount | 14 | -40°C to +85°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59, DS33R11, DS33R41 | |
| PE-68882 | 1CT:1.15CT and 1CT:1CT | 1 | Surface Mount | 14 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| PE-64952 | 1:2CT and 1:1.36 | 1 | Through Hole | 14 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS2148, DS21Q48, DS21552, DS21Q552, DS21554, DS21Q554 | |
| PE-64953 | 1:2CT and 1:2CT | 1 | Through Hole | 14 | 0°C to +70°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| PE-65865 | 1:1.15CT and 1CT:2CT | 1 | Surface Mount | 16 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| T1076 | 1:1.15CT and 1CT:2CT | 1 | Surface Mount | 16 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| T1136 | 1CT:1CT and 1CT:1.36CT | 1 | Surface Mount | 16 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS2148, DS21Q48, DS21552, DS21Q552, DS21554, DS21Q554 | |
| PE-68678 | 1CT:1CT and 1CT:2CT | 1 | Surface Mount | 16 | 0°C to +70°C |
T1/E1 | DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 | |
| PE-68877 | 1CT:1CT and 1CT:2CT | 1 | Surface Mount | 12 | -40°C to +85°C |
T1/E1 | DS33R11, DS33R41 | |
| T1094 | 1CT:1CT and 1CT:2CT | 1 | Surface Mount | 16 | -40°C to +85°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| TX1099 | 1CT:1:0.8 and 1CT:1:0.8 | 1 | Surface Mount | 16 | -40°C to +85°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21348, DS21Q348, DS21448, DS26502, DS26503, DS26504, DS26521, DS26522, DS33R11 | |
| TX1467 | 1CT:1:1 and 1CT:1:1 | 1 | Surface Mount | 16 | -40°C to +85°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| TX1473 | 1:2 and 1:1 | 4 | Surface Mount | 32 | -40°C to +85°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| T1068 | 1:2CT and 1:1CT | 4 | Surface Mount | 40 | 0°C to +70°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| TX1475 | 1CT:1CT and 1CT:2CT | 4 | Surface Mount | 32 | -40°C to +85°C |
T1/E1 | DS26324, DS26334, DS26518, DS26519, DS26524, DS26528 | |
| T1114 | 1CT:1CT and 1CT:2CT | 4 | Surface Mount | 40 | -40°C to +85°C |
T1/E1 | DS26303 | |
| T1108 | 1:2CT and 1:1CT | 4 | Surface Mount | 40 | -40°C to +85°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| TX1292 | 1:1.36 and 1:1 | 4 | Surface Mount | 40 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS2148, DS21Q48, DS21552, DS21Q552, DS21554, DS21Q554 | |
| PE-65968 | 1:2CT | RX or TX | Surface Mount | 6 | 0°C to +70°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184, DS3251, DS3252, DS3253, DS3254 | |
| PE-65969 | 1:2CT | RX or TX | Through Hole | 6 | 0°C to +70°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154, DS3170, DS3171, DS3172, DS3173, DS3174, DS3181, DS3182, DS3183, DS3184 | |
| T3002 | 1:2CT | RX or TX | Surface Mount | 6 | -40°C to +85°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 | |
| T3012 | 1:2CT | RX or TX | Surface Mount | 6 | -40°C to +85°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 | |
| T3021 | 1:2CT and 1:2CT | 1 | Surface Mount | 16 | -40°C to +85°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 | |
| T3047 | 1:1 | 4 | Surface Mount | 32 | -40°C to +85°C |
T3/E3 | DS32501, DS32502, DS32503, DS32504, DS32512 | |
| T3049 | 1:2 | 4 | Surface Mount | 32 | -40°C to +85°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154, DS3170, DS3171, DS3172, DS3173, DS3174, DS3181, DS3182, DS3183, DS3184 | |
| HALO Electronics | TG38-1505A | 1:1.15CT | TX only | Through Hole | 6 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 |
| TD70-1205A | 1:1.36CT | TX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| TD15-1205A | 1:2CT | TX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 | |
| TD02-1205A | 1CT:1 | RX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 | |
| TG04-1505NS | 1CT:1CT | RX only | Surface Mount | 6 | -40°C to +85°C |
T1/E1 | DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 | |
| TG15-1505NS | 1CT:2CT | TX only | Surface Mount | 6 | -40°C to +85°C |
T1/E1 | DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 | |
| TG38-1505NS | 1:1.15CT | TX only | Surface Mount | 6 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| TG70-1505NS | 1:1.36CT | TX only | Surface Mount | 6 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| TD63-1505D | 1:1.15CT and 1:2CT | 1 | Through Hole | 14 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| TG63-1505N1 | 1:1.15CT and 1CT:2CT | 1 | Surface Mount | 16 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| TG35-1505N1 | 1CT:1.15CT and 1CT:1CT | 1 | Surface Mount | 16 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| TGSP-1467N1 | 1CT:1:1 and 1CT:1:1 | 1 | Surface Mount | 16 | -40°C to +85°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| TG28-1505N1 | 1CT:1CT and 1CT:1.36C | 1 | Surface Mount | 16 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 | |
| TG74-1205N1 | 1CT:1CT and 1CT:2CT | 1 | Surface Mount | 16 | 0°C to +70°C |
T1/E1 | DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 | |
| TG83-S006NU | 1:2 and 1:1 | 4 | Surface Mount | 32 | -40°C to +85°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| TG74-1205N1 | 1CT:1CT and 1CT:2CT | 1 | Surface Mount | 16 | 0°C to +70°C |
T1/E1 | DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 | |
| TG07-0206NS | 1:2CT | TX or RX only | Surface Mount | 6 | 0°C to +70°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154 | |
| TD07-0206NE | 1:2CT | TX or RX only | Through Hole | 6 | 0°C to +70°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154 | |
| TG07-0356NS | 1:2CT | TX or RX only | Surface Mount | 6 | 0°C to +70°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154 | |
| TG07-0406N1 | 1:2CT and 1:2CT | 1 | Surface Mount | 16 | -40°C to +85°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154 | |
| TG05-0206NU | 1:2 | 4 | Surface Mount | 32 | -40°C to +85°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154 | |
| Bel | S553-3855-02 | 1:1.15CT and 1CT:2CT | 1 | Surface Mount | 16 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 |
| S553-0013-02 | 1:2CT and 1:1.36 | 1 | Surface Mount | 16 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS2148, DS21Q48, DS21552, DS21Q552, DS21554, DS21Q554 | |
| S553-0013-01 | 1CT:2CT and 1:1 | 1 | Surface Mount | 16 | 0°C to +70°C |
T1/E1 | DS21352, DS21354, DS2148, DS2155, DS2196, DS21Q352, DS21Q354, DS21Q48 | |
| S554-3184-01 | 1:2CT | 1 | Surface Mount | 6 | 0°C to +70°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 | |
| 0554-3184-01 | 1:2CT | 1 | Through Hole | 6 | 0°C to +70°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 | |
| S553-6500-H5 | 1CT:1:1 and 1CT:1:1 | 4 | Surface Mount | 32 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21554, DS21Q552, DS21Q554 | |
| S554-6500-21 | 1:2 | 4 | Surface Mount | 32 | -40°C to +85°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 | |
| S553-6500-C8 | 1:2 and 1:1 | 4 | Surface Mount | 32 | -40°C to +85°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| 0553-0013-RC | 1:1.15CT | TX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| 0553-0013-BC | 1CT:1 | RX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 | |
| 0553-0013-1J | 1:2CT and 1:2CT | 1 | Through Hole | 14 | 0°C to +70°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| 0553-0013-2J | 1:2CT and 1:1.36 | 1 | Through Hole | 14 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS2148, DS21Q48, DS21552, DS21Q552, DS21554, DS21Q554 | |
| T2099S | 1CT:1CT and 1CT:1.36CT | 1 | Surface Mount | 16 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS2148, DS21Q48, DS21552, DS21Q552, DS21554, DS21Q554 | |
| T2006 | 1:1.15CT | TX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| T2007 | 1:1.36CT | TX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 | |
| T2028S | 1:1.15CT and 1CT:2CT | 1 | Surface Mount | 16 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| T0034 | 1:2CT | TX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 | |
| S553-6500-76 | 1CT:1CT and 1CT:2CT | 1 | Surface Mount | 16 | 0°C to +70°C |
T1/E1 | DS2196, DS21348, DS21Q348, DS21448, DS21352, DS21Q352, DS21354, DS21Q354 | |
| S553-6500-E6 | 1CT:1CT and 1CT:2CT | 1 | Surface Mount | 16 | -40°C to +85°C |
T1/E1 | DS21348, DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| S553-6500-H6 | 1CT:1:0.8 and 1CT:1:0.8 | 1 | Surface Mount | 32 | -40°C to +85°C |
T1/E1 | DS21348, DS21Q348, DS21448, DS2155, DS2156 | |
| Coev | PT-311 | 1:1.36CT | TX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 |
| PT-311ET | 1:1.36CT | TX only | Through Hole | 6 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS21Q552, DS21554, DS21Q554 | |
| PT-306 | 1:2CT | TX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| PT-306ET | 1:2CT | TX only | Through Hole | 6 | -40°C to +85°C |
T1/E1 | DS2155, DS2156, DS21Q55, DS21455, DS21458, DS21Q50, DS21Q58, DS21Q59 | |
| PT-312 | 1CT:1 | RX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 | |
| PT-312ET | 1CT:1 | RX only | Through Hole | 6 | -40°C to +85°C |
T1/E1 | DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 | |
| PT-323 | 1:1 | RX only | Through Hole | 6 | 0°C to +70°C |
T1/E1 | DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 | |
| PT-323ET | 1:1 | RX only | Through Hole | 6 | -40°C to +85°C |
T1/E1 | DS2196, DS2151, DS2152, DS2153, DS2154, DS21348, DS21Q348, DS21448, DS2148, DS21Q48, DS21352, DS21Q352, DS21354, DS21Q354, DS21552, DS2121Q552, DS21554, DS21Q554 | |
| SMD601-05 | 1:1.15CT and 1CT:2CT | 1 | Surface Mount | 16 | 0°C to +70°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| SMD601-05ET | 1:1.15CT and 1CT:2CT | 1 | Surface Mount | 16 | -40°C to +85°C |
T1/E1 | DS2151, DS2152, DS2153, DS2154, DS21552, DS21Q552, DS21554, DS21Q554 | |
| SMD606-05 | 1CT:1CT and 1CT:2CT | 1 | Surface Mount | 16 | 0°C to +70°C |
T1/E1 | DS21352, DS21354 | |
| SMD606-05ET | 1CT:1CT and 1CT:2CT | 1 | Surface Mount | 16 | -40°C to +85°C |
T1/E1 | DS21352, DS21354 | |
| SM01-T304M | 1:2CT | 1 | Surface Mount | 6 | -40°C to +85°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 | |
| MGBBT-00019 | 1:2 | 4 | Surface Mount | 32 | -40°C to +85°C |
T3/E3 | DS3150, DS3151, DS3152, DS3153, DS3154, DS3181, DS3182, DS3183, DS3184 |
T1/E1 and T3/E3 Transformer Selection Information
If you have further questions on T1/E1 or T3/E3 transformer selection for our devices, please contact the Telecommunication Applications support team. For more information about specific transformers, please consult the manufacturers using the information listed below.
Vendor List
| Address | Phone | Fax | Website |
| Pulse Engineering Inc. 12220 World Trade Drive San Diego, CA 92128 |
858-674-8100 | 858-674-8262 | www.pulseeng.com |
| HALO Electronics Inc. 1861 Landings Drive Mountain View, CA 94043 |
650-903-3800 | 650-903-9300 | www.haloelectronics.com |
| Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 |
201-432-0463 | 201-432-9542 | www.belfuse.com |
| Coev Magnetics (Tyco) 3003 9th Avenue SW Watertown, SD 57201 |
605-886-3326 | 605-884-3640 | www.coev.net |
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