myMectronic
myMectronic

A Premier B2B Part Search

DIODES INC. 1SMB5921B Surface Mount Power Zener Diode

The 1SMB5921B is a surface-mount Zener diode housed in a molded plastic package with a copper alloy lead frame featuring lead-free plating, and polarity indicated by a cathode band. Capable of dissipating up to 3W of power, it offers a standard voltage tolerance of ±5%. This environmentally friendly device is halogen and antimony-free, making it a green choice. It has an ESD rating of Class 3 (>16kV) according to the human body model, making it suitable for applications in automation, voltage regulation, and process control. Please note that market demand may lead to longer lead times and fluctuating delivery dates. The product is sold without discounts.

Authorized Distributors
Source:DigiKey
Part No:1SMB5921B
Stock:5348
Inv Date:06-11-2026
Price: Unit price: $0.75
Buy/RFQ:
Part No:1SMB5921B
Stock:0
Inv Date:06-12-2026
Price: N/A
Buy/RFQ:
Part No:1SMB5921B
Stock:0
Inv Date:06-12-2026
Price: N/A
Buy/RFQ:
Part No:1SMB5921B
Stock:0
Inv Date:06-12-2026
Price: N/A
Buy/RFQ:

DIODES INC. 1SMB5921B Surface Mount Power Zener Diode Specifications:

  • Maximum Power Dissipation: 3.0 W
  • Package: SMB
  • Case Material: Molded Plastic
  • Leadframe: Copper Alloy with Lead-Free Plating (Matte Tin)
  • Polarity: Marked by a Cathode Band
  • ESD Rating: Class 3 (>16kV)
  • Temperature Range: -65°C to +150°C
  • Operating and Storage Temperature: -65°C to +150°C
  • Flammability: UL 94V-0
  • Voltage Tolerance: ±5%
  • Environmental: Halogen- and Antimony-Free, RoHS Compliant
  • Weight: 0.096 grams
  • Dimensions (min-max): A: 3.30-3.94 mm, B: 4.06-4.57 mm, Cc: 1.96-2.21 mm, D: 0.15-0.31 mm, E: 5.00-5.59 mm, G: 0.05-0.20 mm, H: 0.76-1.52 mm, J: 2.00-2.50 mm

Buy the Buy Diodes Incorporated 3W Surface Mount Power Zener Diode Part Number 1SMB5921B Online

Purchase the Diodes Incorporated 1SMB5921B surface-mount power Zener diode online today. Designed for high power dissipation up to 3W, this environmentally friendly device features lead-free, halogen-free construction, making it ideal for automation, voltage regulation, and process control. Its rugged molded plastic case ensures durability, while the copper alloy lead frame provides excellent electrical conductivity. With a standard ±5% voltage tolerance and an ESD Class 3 rating, it guarantees reliable performance in demanding environments. Order now for fast delivery and dependable quality.

Get Diodes Incorporated 1SMB5921B today—robust for voltage regulation and environmentally friendly for reliable automation applications.

Frequently Asked Questions

Where can I buy DIODES INC. 1SMB5921B?

You can click on the BUY or RFQ button to purchase 1SMB5921B from an authorized DIODES INC. distributor.

How do I troubleshoot issues or seek technical support for part 1SMB5921B?

You can download the 1SMB5921B datasheet or visit the DIODES INC. website for support.

Who is the manufacturer of 1SMB5921B?

DIODES INC.

DIODES INC. Part List

Browse and search other DIODES INC. parts, locate datasheets and stock

Sponsored by