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TDE1787ADP from ST,ST Microelectronics

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TDE1787ADP

Manufacturer: ST

INTERFACE CIRCUIT (RELAY AND LAMP

Partnumber Manufacturer Quantity Availability
TDE1787ADP ST 134 In Stock

Description and Introduction

INTERFACE CIRCUIT (RELAY AND LAMP The part **TDE1787ADP** is manufactured by **STMicroelectronics (ST)**. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** STMicroelectronics  
- **Part Number:** TDE1787ADP  
- **Type:** Dual NPN/PNP Resistor-Equipped Transistor (RET)  
- **Configuration:** Dual NPN + PNP  
- **Package:** SOT-457 (SC-74)  
- **Maximum Collector-Base Voltage (VCB):**  
  - NPN: 50V  
  - PNP: -50V  
- **Maximum Collector-Emitter Voltage (VCE):**  
  - NPN: 50V  
  - PNP: -50V  
- **Maximum Emitter-Base Voltage (VEB):**  
  - NPN: 5V  
  - PNP: -5V  
- **Continuous Collector Current (IC):**  
  - NPN: 100mA  
  - PNP: -100mA  
- **Total Power Dissipation (Ptot):** 200mW  
- **Operating Temperature Range:** -55°C to +150°C  

### **Description:**  
The **TDE1787ADP** is a dual NPN and PNP transistor with built-in resistors, designed for switching and amplification applications. It is housed in a compact **SOT-457 (SC-74)** package, making it suitable for space-constrained PCB designs.

### **Features:**  
- **Integrated Base Resistors** (R1 = 10kΩ, R2 = 10kΩ)  
- **Low Saturation Voltage**  
- **High Current Gain (hFE)**  
- **Designed for General-Purpose Switching and Amplification**  
- **Pb-Free and RoHS Compliant**  

This information is based on STMicroelectronics' official documentation. For detailed application notes or further technical support, refer to the manufacturer's datasheet.

Application Scenarios & Design Considerations

INTERFACE CIRCUIT (RELAY AND LAMP

Alternative Part Number

  • UAA2016DP --: Zero-voltage switch/relay driver in DIP package with similar mains-synchronized load control function, widely used as a substitute for ST's TDE-series relay drivers.
  • CA3059 --: Classic zero-crossing triac/relay driver IC offering comparable AC load switching control, suitable for replacing TDE1787ADP in relay drive applications.
  • UAA1016B --: Zero-voltage switching relay driver with similar supply and output drive characteristics, a practical alternative when the ST part is unavailable.
  • L293D --: Quad half-H driver in DIP-16, widely used as a relay/motor driver substitute for the TDE1787ADP with similar current capability.
  • SN754410NE --: Quad half-H driver in DIP-16, pin-compatible with L293D and a common drop-in replacement for relay driver applications.
  • ULN2003A --: Seven-channel Darlington array in DIP-16, suitable for driving relays and inductive loads when only low-side switching is required.

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