34221 overview
34221 is a component documented by Pulse A Technitrol Comp. The PDF description identifies it as "ISDN S-Interface Transformers." This guide condenses the most useful engineering information from the available PDF so that designers and sourcing teams can identify the checks that still need confirmation in the original document.
Datasheet snapshot
- Manufacturer: Pulse A Technitrol Comp...
- Part number: 34221
- Category: Interface
- Datasheet length: 7 Pages
Specifications and operating details
The following points were extracted from the PDF text. Check the associated conditions, notes and limits in the complete document before using a value in a design.
- Longitudinal Balance for Transformers - The 10kHz to 300kHz: 60dB minimum 300kHz to 1MHz: Minimum value decreasing 20dB/decade. (continued on next page) IC XMIT Sec : Pri RCV High Freq Choke IC RCV XMIT Low Freq Choke Low Freq Choke High F.
- Common Mode Chokes - The “high frequency” 4-wire A high inductance “low frequency” common mode Surge Voltage Capability for Transformers and Longitudinal Voltage Peak: 2,400V 10/700 μsec Metallic Voltage Peak: 800V 10/560 μsec 6.
- These are nominally 120V or 200V maximum at 20 to 60Hz, limited by 1500W resistive or 400 to 600W inductive limiting.
- Surface Mount, Dual, 2000Vrms Out HP-8751A Network Analyzer RB A VT EL ISM-1 Pri Sec Terminating Resistor ISM-1 = Wandel and Goltermann Signal Balance Ratio Bridge **Figure 2.
- Longitudinal Balance Test Circuit** T604.F (05/12) pulseelectronics.com ISDN S-Interface Transformers Designed for 4-wire links, ISDN-S/T and T1/E1/CEPT High frequency chokes for EMI reduction Low frequency chokes improve longitudinal bala.
- Typical impedance for high frequency common mode chokes based on a 100 □ system.
- Typical impedance for low frequency common mode chokes based on a 100 □ system.
Engineering review checklist
- Confirm the exact ordering code, package, pinout or terminal arrangement and document revision.
- Compare recommended operating conditions with absolute maximum ratings and retain adequate design margin.
- Validate electrical, thermal, mechanical and environmental behavior in the final application.
Always confirm values against the latest manufacturer-controlled datasheet, especially when qualifying a substitute or releasing a production BOM.
View the complete PDF and model record
Open the 34221 datasheet and model details to review the complete PDF, document pages and available product information.
Source attribution
Adapted from the PDF associated with this DigiCamel model page.
Source model URL: https://www.digicamel.com/product.php?slug=34221-pulse-a-technitrol-comp