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B Series Totally Depleted Silicon Surface Barrier Radiation Detector

Main Application
Particle identification, telescopes of detectors, any type of ΔE measurements. In addition to ΔE/Δx experiments, the uniformly high field of B Series detectors makes them the best choice for rise-time discrimination or for precision timing experiments. These detectors are also useful in any experiment where an A Series detectors is used; B Series detectors are preferable if radiation damage is likely.

  • Literature +

  • Mounting Arrangements +


    Mount must be specified when ordering.

    A      This is a "ring mount"; i.e., the silicon wafer is offered on its ring without output connectors. This infrequently used arrangement is available on special request.

    T      Microdot on the side of the can; without adjustable screws. (Open back.)

    Dimensions are given in millimeters.

    § Built into a Microdot connector only.

    For detectors 1500 or 2000 μm deep, add 1.5 mm to the Y dimension.


    Detector Size (mm2)
    W (Nominal)    		 Type A  Type T§ Transmission Mount
    X Y  X Y Z
     050  8.0 15.2 3.7
    		 19.4 7.9 9.9
     150  13.8 22.0 3.7
    		 26.1 7.9 9.9
     300  19.5 27.1 3.7
    		 31.6 7.9 9.9
     450 23.9 30.5 3.7
    		 34.8 7.9 9.9
     Tolerance ±0.5 ±0.3
    		 ±0.3
    		 ±0.3
    		 ±0.3
    		 ±0.3

  • Ordering Information +


    Mount must be specified when ordering.

    Supplied with T Mount unless otherwise specified.

    * All standard totally depleted detectors are cut off-axis from the parent crystal at a specific angle that will minimize ion channeling. Supplied in T Mount unless specified otherwise by appropriate letter prefix. Other areas and depths available on special order.

    ** First three digits of Model No. indicate total system resolution FWHM for 241Am, 5.486-MeV alphas, using standard ORTEC electronics and 0.5-µs shaping time constants. Beta resolution approximated by pulser width FWHM.

    § Requires special order.

    NOTE: Alpha Suite Compatible Detectors: ULTRA-AS and Low-Background R Series detectors in B-mount are guaranteed compatible with the Alpha Suite products (DUO, MEGA, ARIA, ENSEMBLE).  All other detectors require an approved special for compatibility and warranted specifications.


    Active Area (mm2)
    		 Guaranteed Maximum Resolution** (keV) Depletion Depth 150 µm
    Range 125-175 µm    		 Depletion Depth 200 µm
    Range 176-225 µm         		 Depletion Depth 250 µm
    Range 226-275 µm     
    α β Model No. Model No.  Model No. 
    50 15
    16    		 6
    7    		 B-015-050-150
    B-016-050-150
    		 B-015-050-200
    B-016-050-200    		 B-015-050-250
    B-016-050-250
    150 17
    18    		 9
    10    		 B-017-150-150
    B-018-150-150
    		 B-017-150-200
    B-018-150-200    		 B-017-150-250
    B-018-150-250
    300 19
    20    		 12
    15    		 B-019-300-150
    B-020-300-150
    		 B-019-300-200
    B-020-300-200    		 B-019-300-250
    B-020-300-250
    450 23
    24    		 17
    19    		 B-023-450-150
    B-024-450-150
    		 B-023-450-200
    B-024-450-200    		 B-023-450-250
    B-024-450-250


    Active Area (mm2)
    		 Guaranteed Maximum Resolution** (keV) Depletion Depth 300 µm
    Range 276-350 µm    		 Depletion Depth 400 µm
    Range 351-450 µm     
    α β Model No. Model No. 
    50 15
    16    		 6
    7    		 B-015-050-300
    B-016-050-300    		 B-015-050-400
    B-016-050-400
    150 17
    18    		 9
    10    		 B-017-150-300
    B-018-150-300    		 B-017-150-400
    B-018-150-400
    300 19
    20    		 12
    15    		 B-019-300-300
    B-020-300-300    		 B-019-300-400
    B-020-300-400
    450 23
    24    		 17
    19    		 B-023-450-300
    B-024-450-300    		 B-023-450-400
    B-024-450-400


    Active Area (mm2)
    		 Guaranteed Maximum Resolution** (keV) Depletion Depth 500 µm
    Range 451-550 µm    		 Depletion Depth 700 µm
    Range 650-750 µm         		 Depletion Depth 1000 µm
    Range 950-1050 µm     
    α β Model No. Model No.  Model No. 
    50 15
    16    		 8
    9    		 B-015-050-500
    B-016-050-500    		 B-015-050-700
    B-016-050-700    		 B-015-050-1000
    B-016-050-1000
    150 17
    18    		 9
    10    		 B-017-150-500
    B-018-150-500    		 B-017-150-700
    B-018-150-700    		 B-017-150-1000
    B-018-150-1000
    300 19
    20    		 13
    14    		 B-019-300-500
    B-020-300-500    		 B-019-300-700
    B-020-300-700    		 B-019-300-1000
    B-020-300-1000
    450 21
    23    		 16
    18    		 B-021-450-500
    B-023-450-500    		 B-021-450-700
    B-023-450-700    		 B-021-450-1000
    B-023-450-1000


    Active Area (mm2)
    		 Guaranteed Maximum Resolution** (keV) Depletion Depth 1500 µm§
    Range 1450-1550 µm
    α β Model No.
    50 17
    19    		 12
    14    		 B-017-050-1500
    B-019-050-1500
    150 19
    21    		 14
    16    		 B-019-150-1500
    B-021-150-1500
    300 21 16 B-021-300-1500
    450 24 19 B-024-450-1500


    Active Area (mm2)
    		 Guaranteed Maximum Resolution** (keV) Depletion Depth 2000 µm§
    Range 1950-2050 µm
    α β Model No.
    50 18 13 B-018-050-2000
    150 20 15 B-020-150-2000
    300 23 18 B-023-300-2000
    450 26 21 B-026-450-2000