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ORTEC 142PC

Bild: ORTEC

ORTEC (AMETEK)

ORTEC 142PC

Preamplifier

Charge-sensitive preamplifier designed specifically for proportional counters.

Nominal sensitivity
4 V/pC1
Dynamic input capacitance
1000 pF1
Guaranteed noise
<340 rms electrons at 0 pF; <485 at 100 pF1
Rise time; +0.5 V into 93 Ω
25 ns at 0 pF; 150 ns at 100 pF1
Datasheet

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

Overview

Key features

  • Nominal sensitivity: 4 V/pC
  • Dynamic input capacitance: 1000 pF
  • Guaranteed noise: <340 rms electrons at 0 pF; <485 at 100 pF

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.

Performance

Guaranteed noise<340 rms electrons at 0 pF; <485 at 100 pF1
Integral nonlinearity≤±0.05%; 0–±7 V open circuit or ±3.5 V into 93 Ω1

Electronics & signal

Dynamic input capacitance1000 pF1
Detector bias isolation±3000 V1
Open loop gain≥40,0001
Output impedance93 Ω per output1

Connectivity & interface

Input and bias connectorsSHV1
Energy and timing outputBNC; identical signals1

Power & battery

Nominal sensitivity4 V/pC1

General

Rise time; +0.5 V into 93 Ω25 ns at 0 pF; 150 ns at 100 pF1

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

Documents

PDF142 Preamplifier (142PC brochure)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. 1
    142 Preamplifier (142PC brochure)
    Publisher: ORTEC (AMETEK)Datasheet p. 1, Specifications – Performance; p. 1, table 'Noise' (Typical / Guaranteed); p. 1, Outputs (ENERGY AND TIMING); p. 1, Connectors … Checked 2026-10-16
ORTEC 276L
ORTEC

ORTEC 276L

Low-power PMT base with preamplifier

PMT compatibility
10-stage, 14-pin; TRW 3B14 socket (JEDEC B14-38); directly compatible with many integrated NaI-PMT assemblies
Conversion gain
Nominally 5 µV/eV with a 2 × 2 in NaI(Tl) crystal and PMT gain of 10⁶
Weight
0.65 kg net
14 referenced values
ORTEC 269
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ORTEC 269

PMT base for 14- and 12-stage, 20-pin photomultipliers

PMT compatibility
14- or 12-stage, 20-pin socket (JEDEC B20-102), including Hamamatsu R1250; Philips XP2020, XP2020Q, XP2040, XP2040Q, XP2041, XP2041Q, XP2212B, XP2230B, XP2233B, XP2262B; EMI 9813K
Weight
0.63 kg net
6 referenced values
ORTEC 266
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ORTEC 266

PMT base for 10-stage, 14-pin photomultipliers

PMT compatibility
10-stage, 14-pin; TRW 3B14 socket (JEDEC B14-38)
Weight
0.37 kg net
6 referenced values
ORTEC 265A
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ORTEC 265A

PMT base for 12-stage, 21-pin photomultipliers, for fast timing

PMT compatibility
12-stage, standard 21-pin sockets, including Hamamatsu R329, R1332, R1333 and Burle 8575, 8850, C31000M
Weight
0.63 kg net
6 referenced values
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Send inquiryContact
Oscar ÅgerstamFounder & CEO
+46 (0)793-04 51 91 oscar@ndec.se +46 (0)793-12 32 48 (customer service)