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quality Power voltage regulating diode GOODWORK 1SMA4738A with built in strain relief and low leakage current factory
quality Power voltage regulating diode GOODWORK 1SMA4738A with built in strain relief and low leakage current factory

Power voltage regulating diode GOODWORK 1SMA4738A with built in strain relief and low leakage current

Key Attributes
Model Number: 1SMA4738A
Product Custom Attributes
Operating Junction Temperature Range:
-65℃~+150℃
Impedance(Zzt):
4.5Ω
Diode Configuration:
Independent
Zener Voltage(Range):
7.79V~8.67V
Pd - Power Dissipation:
500mW
Zener Voltage(Nom):
8.2V
Mfr. Part #:
1SMA4738A
Package:
SMA
Product Description

Product Overview

The 1SMA4728A THRU 1SMA4777A series are surface mount power voltage-regulating diodes designed for high-temperature soldering applications. These diodes offer fast response times, excellent clamping capability, and low leakage current, making them suitable for various voltage regulation and transient suppression applications. The low profile package and built-in strain relief contribute to their robustness and ease of integration into electronic circuits.

Product Attributes

  • Application: Surface mount
  • Soldering: High temperature guaranteed: 260 C / 10 seconds
  • Response Time: Fast, typically less than 1.0 ps from 0 volt to BV min.
  • Leakage Current: Typical IR less than 1mA above 10V
  • Clamping Capability: Excellent
  • Package: Low profile, molded plastic (DO-214AC/SMA)
  • Flame Retardant: UL 94V-0 rated epoxy
  • Lead Solderability: Per MIL-STD-202, method 208 guaranteed
  • Polarity: Color band denotes cathode end (except Bidirectional)
  • Mounting Position: Any
  • Weight: 0.063 grams

Technical Specifications

ParameterSymbol1SMA4728A THRU 1SMA4777A (DO-214AC)Unit
Maximum steady state power dissipation at TL = 75 C (Mounted on PCB with 5.0 mm x 5.0 mm copper pads attached to each terminal)Ptot1000mW
Maximum steady state power dissipation at TA = 25 C (Mounted on minimum recommended pad layout)Ptot500mW
Maximum instantaneous forward voltage at 200 mA for all types (Pulse test: 300 s pulse width, 1 % duty cycle)VF1.5V
Operating junction and storage temperature rangeTJ, TSTG-65 to +150C
Typical thermal resistance, junction to lead (Mounted on PCB with 5.0 mm x 5.0 mm copper pads attached to each terminal)JL50C/W
Typical thermal resistance, junction to ambient (Mounted on minimum recommended pad layout)JA250C/W
Reverse Zener voltage at IZTVZ3.3 to 300V
Admissible Zener Current (Max)IZM1000mA

2412061650_GOODWORK-1SMA4738A_C41399448.pdf

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