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Products

Products (213)

Friday, 24 February 2012 18:47

Stepper Motor Control Circuits

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Stepper Motor Control Circuits

We are proud to be a full stocking distributor for LSI/CSI. Click here to download the LSI/CSI Short form Catalog. ICs that make products better
that extend from the consumer and industrial marketplace to military and aerospace applications.

Stepper Motor Controller…. (24 Pins)
LS7290, LS7290-S, LS7290-TS
Last Update: 07/20/11
Controls Bipolar and Unipolar Stepper Motors
Full, 1/2 step modes selection
Direct interface to L298 for BiPolar motors
Enable, Step, Direction and Reset control inputs
PWM chopper circuit for step and torque control
Two peak current sense comparators with external reference input
Programmable interstep blanking delay
3 to 5.5 volt operation
 
Stepper Motor Controller…. (20 Pins; 20 Pins)
LS8297, LS8297-S, LS8297-TS NEW!
LS8297CT, LS8297CT-S, LS8297CT-TS
Low cost, low current, pin-compatible replacement for L297.
Torque Ripple Compensated half-steps – LS8297CT
Controls two-phase Bipolar and four-phase Unipolar motors
Interface to four AND Gates driving four N-Channel MOSFET's for Unipolar motors
Normal/wave drive
PWM chopper circuit for current control
Two over current sense comparators with external references input
All inputs and outputs TTL/CMOS compatible (TTL for 5V operation)
Supply current < 400uA
Supply voltage: 4.75 to 7V
 
Stepper Motor Controller…. (24 Pins)
LS8397, LS8397-S, LS8397-TS NEW!
Low cost, low current, pin-compatible replacement for L297.

L297 operating modes with added functions:

  • Selectable Torque Ripple Compensation MODE
  • Selectable Holding Torque MODE

 

Other features same as LS8297
Tuesday, 19 May 2020 22:05

Strip Connectors

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Amphenol Canada -Strip Connectorsalt

Strip Connectors

 
The Amphenol microminiature connector series offers proven military spec performance and reliability in rectangular and stripline micro connectors. Microminiature connectors are available in rectangular D, strip, and custom card edge configurations, with contacts on .050 (1.27) centers. Inserts in micro-d miniature connectors with signal and coax/power contacts are also available.

The Amphenol microminiature contact system employs a precision stamped and formed pin contact recessed within the plug insulator. The socket contact is a precision fabricated tube. Pin and socket contacts are epoxy retained in high-grade thermoplastic insulators. The contact system has proven reliability, exceeding the performance specifications of MIL-DTL-83513. Terminations are available in a broad range including solder cup, terminated to wire harness, vertical and right angle PCB. Plastic and metal shell versions are available, in a broad range of shell finishes. A broad range of mounting hardware is available (jackscrews, posts, guide pins) as well as straight and angled back-shells.

FEATURES AND BENEFITS

  • One piece insulator: Polyphenylene sulfide (Ryton)
  • Contacts (1-30 positions): Copper alloy, gold plate
  • A guide pin (optional, one or both ends): 300 series stainless steel
  • Wide selection of wire sizes, types, and color finish.
  • Coupling feature: Friction
  • Contact spacing: .050" (1.27) centres
DOWNLOAD MICRO CATALOG
Thursday, 15 December 2011 23:21

Surface Mount Resistor Networks

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Surface Mount Resistor Networks

High-Reliability products for Military / Aerospace/ Communicatuion / OEM Applications

JEDEC PACKAGES

Size Code

Length

Width

Thickness

I/O Count

Watts Per Resistor*

Watts Per Package

Max Voltage

SJCA

.300

.300

0.030

16

0.05-0.10

0.08

50

SJCB

.350

.350

0.030

20

0.05-0.10

1.0

50

SLAMDIP PACKAGES

Size Code

Length

Width

Thickness

I/O Count

Watts Per Resistor*

Watts Per Package

Max Voltage

SD15

.150

.410

0.030

16

0.05-0.10

0.8

50

SD20

.200

.410

0.030

16

0.05-0.10

0.8

50

Nominal measurements are in inches.

Wednesday, 12 December 2012 17:12

Survey Thank You

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Thank you!

Thank you for participating in our customer satisfaction survey.

Your feedback will help us identify areas of improvement for our company.

 

Sinccerely,

Gemini Electronics
Sales & Marketing Team

Wednesday, 17 August 2011 20:08

Testing and Screening Mil-Spec Component

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Testing and Screening

Mil-Spec Components

 

We offer a broad spectrum of value added testing services. We partner with several independent test labs. Our value added testing and screening capabilities are being utilized more frequently. Some of the reasons for this include :

 

  • Obsolescence of mil spec devices.
  • Customer drawing requirements specify selected parameters.
  • Re-screening requirements
  • Concern over influx of counterfeit parts from China

 

Here are examples of the testing services we offer:

 

  • Group A & B
  • Basic electricals
  • Burn in
  • Bond Pull and Die Shear
  • Full blown MIL screening or re-screening to JANTX and 883 Level*
  • Steam Aging and Solderability Test Stations
  • Solder Tinning & Lead Cleaning
  • PIND (Particle Impact Noise Detection)
  • Constant Acceleration (Centrifuge)
  • Marking and Resistance to Solvent Test
  • Optical Microscope Systems for Internal Visual Inspection (Failure Analysis)-SEM
  • Hermeticity Seal Detection (Fine and Gross)
  • Pressurization System for Gross (Fluorocarbon) and Fine (Helium)
  • Leak Detection


*Note: All screening of semiconductors to military specifications is performed at a DSCC- VQC NILL-STD 883 certified lab. In addition to semiconductors we also offer testing on relays for their basica electrical performance and cable assmblies to ensure continuity, insulation resistance, and dielectric breakdown.

Friday, 02 December 2011 23:43

Thick Film Jumpers

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Thick Film Jumpers

High-Reliability products for Military / Aerospace/ Communicatuion / OEM Applications

 

For circuts with a small number of crossovers, a jumper chip can be more economical than printing a dielectric layer and crossover conductor or using a thru-hole. Thick film jumpers are available in five sizes, all with wraparound terminations and glass passivation on a portion of the top surface.  The CP chip type has platinum/silver terminations for conductive epoxy bonding, and the CPX type has pretinned nickle barrier terminations for solder applications.  PLEASE CONTACT US FOR PRICE AND DELIVERY!

Size Code
Length
Width
Thickness
Maximum
Resistance
Download
Available
0502
.050
.025
.015

.2ohm

jump.pdf
0703
.075
.030
.015

.2ohm

jump.pdf
0705
.075
.050
.015

.2ohm

jump.pdf

1003

.100

.025

.015

.2ohm

jump.pdf
1206
.125
.065
.015

.2ohm

jump.pdf
Nominal measurements are in inches.
Thursday, 15 December 2011 22:17

Thin Film High-Frequency Resistors

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Thin Film High-Frequency Resistors

High-Reliability products for Military / Aerospace/ Communicatuion / OEM Applications

 

Type A Termination
Solder Bump
Size Code
Length
Width
Thickness
Power
Rating
Download
Available
0202
.022
.20
.010

25mw

pdf
0302
.032
.022
.015

40mw

pdf
0303
.032
.030
.010

50mw

pdf
0402
.042
.022
.015

50mw

pdf
0404
.042
.038
.015

75mw

pdf
0502
.052
.025
.015

50mw

pdf
0505
.052
.048
.015

125mw

pdf
0603
.062
.032
.015

100mw

pdf
0705
.077
.048
.015

200mw

pdf
1005
.102
.250
.015

200mw

-
1010
.101
.095
.040

500mw

pdf
1206
.126
.061
.025

300mw

pdf

Nominal measurements are in inches.

 

Thursday, 15 December 2011 22:09

Thin Film on Silicon Resistors

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Thin Film on Silicon Resistors

High-Reliability products for Military / Aerospace/ Communicatuion / OEM Applications

 

Low Value
Mid Range Value
High Value
Center Tap
Size Code
Length
Width
Thickness
Bond Pad
Power Rating (mW)
Voltage Rating (V)
Download Available
0202
.020
.020
.010
.005
100
100
0303
.030
.030
.010
.005
250
100
0404
.040
.040
.010
.005
350
100
0505
.050
.050
.010
.005
500
100
Nominal measurements are in inches.

 

Thursday, 15 December 2011 22:40

Thin Film Power Moisture Resistors

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Thin Film Power Moisture Resistors

High-Reliability products for Military / Aerospace/ Communicatuion / OEM Applications

 

Size Code
Length
Width
Thickness
Max. Voltage
Max. Power
0502
.050
.025
.015
40V

20mW

0505
.050
.050
.015
40V

50mW

0705
.075
.050
.015
50V

100mW

1005
.100
.050
.015
40V

100mW

1206
.125
.065
.015
100V

250mW

1505
.150
.050
.015
40V

150mW

2208

.225

.075

.025

40V

225mW

1010

.100

.100

.015

40V

500mW

2010
.200
.100
.025
150V

800mW

2512
.250
.125
.025
200V

1000mW

Nominal measurements are in inches.

 

Monday, 06 May 2013 21:25

Through Hole, RNC 90

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Metal Foil Resistors - Through Hole, RNC 90

Wilbrecht LEDCO, inc' metal foil resistors are constructed to reliably meet the tightest temperature coefficients and resistance tolerances while providing long term stability in high reliability applications.

We offer a TCR of ± 2.5 ppm/°C over the range - 55°C to +125°C and resistance tolerances to 0.005%. Our resistors have less than a 0.2% resistance change over 10,000 hours at rated temperatures and power.

The resistor's unique two-wire lead construction abates mechanical stresses and provides increased protection against vibration in military and aerospace applications. All production is documented to QPL standards.

Series Descriptions
Series WA and WB

These commercial grade metal foil resistors provide extreme stability for A/D circuits.

Series WQ and WT

These close tolerance metal foil resistors are approved for MIL-PRF-55182/RNC90 (R Level)

Series WN

The WN Series is qualified to the NASA S-311-P-813 specification.

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