SMB10J20A-E3/5B Equivalent & Substitute Parts

Part Overview

The SMB10J20A-E3/5B is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates in the TransZorb® series and is designed for general-purpose transient voltage suppression applications. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified to address inventory availability, lead time requirements, or specific packaging preferences while maintaining electrical and mechanical compatibility.

Substiute Parts

SMB10J20A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 812SMB10J20A-E3/5B Datasheet

Current PartRFQ

SMBJ20A

Good-Ark SemiconductorIn Stock: 38643SMBJ20A Datasheet

MFR RecommendedRFQ

SMBJ20A

Good-Ark SemiconductorIn Stock: 38643SMBJ20A Datasheet

MFR RecommendedRFQ

SMBJ20A

Good-Ark SemiconductorIn Stock: 38643SMBJ20A Datasheet

MFR RecommendedRFQ

SMBJ20A-TP

Micro Commercial CoIn Stock: 3850SMBJ20A-TP Datasheet

MFR RecommendedRFQ

SMBJ20A-TR

STMicroelectronicsIn Stock: 2880SMBJ20A-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMB10J20A-E3/5B is determined by strict alignment of the following critical electrical and mechanical parameters:

Mandatory Matching Parameters:

• Voltage - Reverse Standoff (Typ): 20V
• Voltage - Breakdown (Min): 22.2V
• Voltage - Clamping (Max) @ Ipp: 32.4V
• Package / Case: DO-214AA (SMB)
• Type: Zener, Unidirectional
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

• Current - Peak Pulse (10/1000µs): 18.5A to 30.9A (substitute parts may have lower peak pulse current ratings)
• Power - Peak Pulse: 600W to 1000W (substitute parts may have lower power ratings)
• Operating Temperature Range: -55°C to 150°C or -55°C to 175°C (extended upper limit acceptable)
• Packaging Format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel®

All identified substitute parts maintain identical voltage specifications and package form factor, ensuring direct functional compatibility in circuit applications. Variations in peak pulse current and power dissipation ratings reflect different manufacturer designs within the same voltage class and package standard.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Selection among these alternatives should be based on the following criteria:

Primary Consideration - Peak Pulse Current Rating: The SMB10J20A-E3/5B provides 30.9A peak pulse current capability. Substitute parts (SMBJ20A variants) offer 18.5A to 19.4A peak pulse current. Selection of a substitute part is appropriate only when the application circuit does not require the full 30.9A transient suppression capacity. If the design margin requires the higher current rating, the original SMB10J20A-E3/5B must be retained.

Secondary Consideration - Operating Temperature Range: The SMBJ20A-TP (Micro Commercial Co) extends the upper operating temperature limit to 175°C, compared to 150°C for other variants. This extended range is beneficial for applications in elevated ambient or high-power dissipation environments.

Packaging and Availability: All substitute parts are available in standard surface-mount packaging formats (Tape & Reel or Cut Tape & Digi-Reel®). Selection may be driven by inventory availability, lead time, or preferred supplier relationships.

Frequently Asked Questions (FAQ)

Q: Can SMBJ20A parts directly replace SMB10J20A-E3/5B in all applications?

A: Direct replacement is valid only when the application circuit operates within the lower peak pulse current specification of 18.5A to 19.4A. If transient events exceed this threshold, the original part's 30.9A rating is required. Voltage specifications and package form factor are identical across all variants.

Q: What is the difference between the packaging options (Tape & Reel vs. Cut Tape & Digi-Reel®)?

A: Both packaging formats are suitable for automated surface-mount assembly. Tape & Reel (TR) is standard for high-volume production. Cut Tape (CT) & Digi-Reel® offers flexibility for lower-volume or mixed-component orders. Electrical performance is identical regardless of packaging format.

Q: Why do substitute parts have lower power ratings (600W vs. 1000W)?

A: The power rating reflects the manufacturer's design and thermal management approach. Lower power ratings indicate more conservative thermal specifications. Substitute parts remain suitable for general-purpose transient suppression applications where peak pulse current does not exceed 19.4A.

Q: Is the extended temperature range of SMBJ20A-TP (175°C) a requirement for my application?

A: The extended range is beneficial only if your circuit operates above 150°C junction temperature. For standard industrial and commercial applications operating within -55°C to 150°C, all variants are functionally equivalent.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 compliance certification and unlimited moisture sensitivity rating (MSL 1), matching the original SMB10J20A-E3/5B specifications.

Q: Can I mix different substitute part manufacturers in the same production batch?

A: Yes. All substitute parts meet identical electrical specifications (voltage, clamping, package) and compliance requirements. Mixing manufacturers is acceptable from an engineering standpoint, though design documentation should reflect the approved part list.