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MA28W-B from PANASONIC

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MA28W-B

Manufacturer: PANASONIC

Silicon epitaxial planar type variable resistor

Partnumber Manufacturer Quantity Availability
MA28W-B,MA28WB PANASONIC 11300 In Stock

Description and Introduction

Silicon epitaxial planar type variable resistor The MA28W-B is a component manufactured by Panasonic. Below are the factual specifications, descriptions, and features based on available knowledge:  

### **Specifications:**  
- **Manufacturer:** Panasonic  
- **Part Number:** MA28W-B  
- **Type:** Relay  
- **Contact Form:** 2 Form C (DPDT - Double Pole Double Throw)  
- **Contact Rating:** 28V DC, 2A  
- **Coil Voltage:** 5V DC  
- **Coil Resistance:** 70Ω ±10%  
- **Operate Time:** 3ms max  
- **Release Time:** 1ms max  
- **Insulation Resistance:** 100MΩ min (at 500V DC)  
- **Dielectric Strength:** 500V AC (between coil and contacts)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Weight:** Approx. 1.5g  

### **Descriptions:**  
- The MA28W-B is a compact, high-performance relay designed for low-power switching applications.  
- It features gold-plated contacts for improved reliability and low contact resistance.  
- Suitable for use in telecommunications, industrial control, and automotive applications.  

### **Features:**  
- **Compact Size:** Small footprint for space-constrained applications.  
- **High Sensitivity:** Low power consumption due to efficient coil design.  
- **Gold-Plated Contacts:** Ensures stable performance and long life.  
- **Sealed Construction:** Provides resistance to dust and environmental contaminants.  
- **High-Speed Switching:** Fast operate and release times for precision applications.  

For exact details, always refer to the official Panasonic datasheet.

Application Scenarios & Design Considerations

Silicon epitaxial planar type variable resistor

Alternative Part Number

  • DB2J31000L --: Schottky barrier diode in a similar small surface-mount package with comparable forward current and low forward voltage, suitable as a direct functional replacement.
  • RB751S-40 --: Small-signal Schottky diode with low forward voltage drop and fast switching, widely used as an alternative to Panasonic MA-series diodes in similar applications.
  • BAT54 --: Common small-signal Schottky diode with similar current rating and low forward voltage, available in SOT-23 and other small packages for general-purpose replacement.

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