ORTEC C Series

Annular partially depleted surface-barrier detectors

ORTEC C Series comprises 16 models (annular partially depleted surface-barrier detectors). The models differ in active area, depletion depth and warranted resolution, among other things – compare them in the model table.

Detector type: Annular partially depleted silicon surface barrier1

Download product sheet (PDF)All values with references – for tender documents

Specifications checked against the manufacturer’s documents on 2026-10-16

Manufacturer’s product page (opens in a new tab)

Overview

Nuclear power & nuclear technology Research & laboratories Environmental monitoring & radiation protection

Specifications

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

Detector type	Annular partially depleted silicon surface barrier1
Resolution measurement conditions	²⁴¹Am, 5.486 MeV alphas; standard ORTEC electronics; 0.5 µs shaping time constants1
Measurement and warranty temperature	21 ±1 °C2
Resolution reference geometry	Thin-window point source; distance at least 2 times the detector diameter2
Mount options per product guide	A/T (open back)3
Alpha Suite compatibility	Not guaranteed compatible; requires an approved special for compatibility and warranted specifications3
Central hole	4 mm standard; 6/8 mm or other geometry by special order1

The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.

Models

16 models in the series. Filter or scroll the table to compare.

16 / 16

Model	Total area including hole4	Guaranteed maximum alpha resolution4	Minimum depletion depth4
C-017-050-100	50 mm²	≤17 keV FWHM	≥100 µm
C-017-050-300	50 mm²	≤17 keV FWHM	≥300 µm
C-017-050-500	50 mm²	≤17 keV FWHM	≥500 µm
C-018-050-1000	50 mm²	≤18 keV FWHM	≥1000 µm
C-019-150-100	150 mm²	≤19 keV FWHM	≥100 µm
C-019-150-300	150 mm²	≤19 keV FWHM	≥300 µm
C-019-150-500	150 mm²	≤19 keV FWHM	≥500 µm
C-020-150-1000	150 mm²	≤20 keV FWHM	≥1000 µm
C-021-300-100	300 mm²	≤21 keV FWHM	≥100 µm
C-021-300-300	300 mm²	≤21 keV FWHM	≥300 µm
C-021-300-500	300 mm²	≤21 keV FWHM	≥500 µm
C-022-300-1000	300 mm²	≤22 keV FWHM	≥1000 µm
C-025-450-100	450 mm²	≤25 keV FWHM	≥100 µm
C-025-450-300	450 mm²	≤25 keV FWHM	≥300 µm
C-025-450-500	450 mm²	≤25 keV FWHM	≥500 µm
C-025-450-1000	450 mm²	≤25 keV FWHM	≥1000 µm

Documents

PDFC Series – Annular Partially Depleted Silicon Surface Barrier Detectors (brochure 020821)Datasheet · ORTEC

Sources

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

1
C Series Annular Partially Depleted Silicon Surface Barrier Radiation Detector
Publisher: ORTEC (AMETEK)Product page Page heading; Ordering Information, footnote **; Ordering Information note Checked 2026-10-16
2
Introduction to Charged-Particle Detectors
Publisher: ORTEC (AMETEK)Application note p. 8, "Test Data and General Information – Alpha Resolution"; p. 3, "Energy Resolution and Noise" Checked 2026-10-16
3
ORTEC Product Guide
Publisher: ORTEC (AMETEK)Product catalogue PDF p. 11 (printed p. 8), table "Standard Mounting Information"; PDF p. 11 (printed p. 8) "Ordering Information"; same note on the series table page Checked 2026-10-16
4
C Series – Annular Partially Depleted Silicon Surface Barrier Detectors (brochure 020821)
Publisher: ORTEC (AMETEK)Brochure p. 1, Ordering Information table, column "Total Area Including 4-mm-diam. Hole (mm²)"; p. 1, Ordering Information table, "Guaranteed Maximum Resolution (keV)**", α column; footnote **; p. 1, Ordering Information table, column "Minimum Depletion Depth 100 µm"; p. 1, Ordering Information table, column "Minimum Depletion Depth 300 µm" … Checked 2026-10-16