BZX584B27 Equivalent & Substitute Parts

Part Overview

The BZX584B27 is an active-status Zener diode manufactured by Taiwan Semiconductor Corporation, designed for surface mount applications in the SOD-523F package. This 27 V, 150 mW Zener diode with ±2% tolerance serves voltage regulation and protection functions in electronic circuits. Substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support alternative packaging or sourcing requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

BZX584B27

Taiwan Semiconductor CorporationIn Stock: 907BZX584B27 Datasheet

Current PartRFQ

BZX584B27 RSG

Taiwan Semiconductor CorporationIn Stock: 9070BZX584B27 RSG Datasheet

Parametric EquivalentRFQ

BZX584B27HE3-TP

Micro Commercial CoIn Stock: 17063BZX584B27HE3-TP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BZX584B27 are qualified based on matching the following critical parameters:

• Voltage - Zener (Nominal): 27 V
• Tolerance: ±2%
• Power - Maximum: 150 mW
• Impedance (Maximum): 80 Ohms
• Current - Reverse Leakage @ Vr: 100 nA @ 18.9 V
• Voltage - Forward (Maximum) @ If: 900 mV @ 10 mA
• Operating Temperature Range: -55°C to 150°C (TJ)
• Mounting Type: Surface Mount
• Package / Case: SC-79, SOD-523

All identified substitutes maintain identical electrical performance specifications and thermal operating range. Packaging format variations (Tape & Reel versus Cut Tape & Digi-Reel) do not affect functional compatibility. Manufacturer differences and optional automotive qualification do not alter core electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

All three parts—BZX584B27, BZX584B27 RSG, and BZX584B27HE3-TP—are active-status components with identical electrical specifications and thermal operating ranges. Selection between these parts is determined by supply chain availability, packaging format requirements, and optional automotive qualification.

BZX584B27 (Taiwan Semiconductor Corporation, Tape & Reel): Primary specification reference. ROHS3 compliant and REACH unaffected. Suitable for standard industrial applications.

BZX584B27 RSG (Taiwan Semiconductor Corporation, Cut Tape & Digi-Reel): Parametric equivalent with alternative packaging format. Identical electrical performance. Higher inventory availability. Moisture Sensitivity Level 1 (Unlimited). Suitable for applications requiring cut tape or Digi-Reel format.

BZX584B27HE3-TP (Micro Commercial Co, Tape & Reel): Parametric equivalent with automotive-grade qualification (AEC-Q101). Identical electrical performance. Highest inventory availability. Suitable for automotive applications or designs requiring AEC-Q101 certification.

All parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for industrial and consumer electronics applications.

Frequently Asked Questions (FAQ)

Q: Can BZX584B27 RSG be used as a direct replacement for BZX584B27?

A: Yes. Both parts share identical electrical specifications: 27 V nominal Zener voltage, ±2% tolerance, 150 mW maximum power, 80 Ohms maximum impedance, and -55°C to 150°C operating temperature range. The difference is packaging format: BZX584B27 RSG uses Cut Tape & Digi-Reel format instead of Tape & Reel. Both are surface mount SOD-523 packages with identical pin configuration and footprint.

Q: What is the difference between BZX584B27HE3-TP and the other substitutes?

A: BZX584B27HE3-TP is manufactured by Micro Commercial Co and carries AEC-Q101 automotive qualification. Electrically, it is identical to BZX584B27 and BZX584B27 RSG. The automotive qualification makes it suitable for automotive applications where AEC-Q101 certification is required. All other electrical and thermal parameters are equivalent.

Q: Are there any compatibility issues with different packaging formats?

A: No. BZX584B27 (Tape & Reel) and BZX584B27 RSG (Cut Tape & Digi-Reel) use the same SOD-523 surface mount package with identical footprint and pin configuration. Packaging format differences affect only handling and supply chain logistics, not electrical performance or PCB assembly compatibility.

Q: Do all three parts meet RoHS and REACH compliance?

A: Yes. All three parts—BZX584B27, BZX584B27 RSG, and BZX584B27HE3-TP—are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for industrial and consumer electronics applications.

Q: Which part should be selected for automotive applications?

A: BZX584B27HE3-TP is qualified for automotive use with AEC-Q101 certification. If automotive qualification is not required, any of the three parts can be used based on packaging format and supply availability.

Q: Are the electrical characteristics identical across all three parts?

A: Yes. All three parts have identical Zener voltage (27 V), tolerance (±2%), maximum power (150 mW), impedance (80 Ohms), reverse leakage current (100 nA @ 18.9 V), forward voltage (900 mV @ 10 mA), and operating temperature range (-55°C to 150°C). Substitution is based on complete electrical equivalence.