Key facts
- Brand
- Epcos
- Model
- B59
- Industry
- Industrial
- Documents
- 3
- Languages
- EN · DE
- Last added
- 2012-06-12
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EPCOS Telecom B59*** PTC Thermistors Datasheet
This document is a technical datasheet for EPCOS Telecom B59*** series PTC (Positive Temperature Coefficient) thermistors designed for use in MDF (Main Distribution Frame) applications. The components are leaded disks intended for overcurrent protection in telecom equipment, such as switching systems and customer premises equipment.
The datasheet details the product's compliance with ITU-T standards K20, K21, and K45 regarding lightning surges and power induction. It provides specific electrical specifications, dimensional drawings for both kinked and straight lead options, and a list of ordering codes corresponding to various resistance values and matched pairs.
Epcos B59 specifications
| Rated voltage VR | 60 VDC |
|---|---|
| Max. switching voltage Vemax | 265 VAC |
| Tolerance of Ra ARR | +/- 20 % |
| Operating temperature range (Vv =0) | - 25/+125 °C |
| Operating temperature range (V=230V) | 0/+60 °C |
All Epcos B59 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the rated voltage for these thermistors?
The rated voltage is 60 VDC.
What is the maximum switching voltage?
The maximum switching voltage is 265 VAC.
What are the applications for these PTC thermistors?
They are used for overcurrent protection in telecom equipment, including switching systems and customer premises equipment.
From: EPCOS B59*** PTC Thermistors for Telecom MDF Applications Datasheet
Are these thermistors suitable for continuous mains connection?
Yes, they are suitable for continuous connection to mains voltages of 110/230 VAC when in a tripped (high ohmic) condition.
From: EPCOS B59*** PTC Thermistors for Telecom MDF Applications Datasheet
What is the maximum switching voltage for kinked leads?
The maximum switching voltage for kinked leads is 265 VAC.
From: EPCOS Telecom B59*** Line Card Applications Leaded Disks B 10** B 11** B 16** C 10**
What are the dimensions of the B 1610 kinked lead type?
The B 1610 kinked lead measures 10.2 mm (bmax) × 13.1 mm (hmax) × 5.0 mm (smax).
From: EPCOS Telecom B59*** Line Card Applications Leaded Disks B 10** B 11** B 16** C 10**