SA170A B0G Equivalent & Substitute Parts

Part Overview

The SA170A B0G is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation, designed for general-purpose overvoltage protection applications. This component features a 170V reverse standoff voltage with a 275V maximum clamping voltage and is housed in a DO-204AC (DO-15) axial through-hole package. The SA170A B0G is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives to maintain design continuity and procurement flexibility.

Substiute Parts

SA170A B0G

Taiwan Semiconductor CorporationIn Stock: 1226SA170A B0G Datasheet

Current PartRFQ

SA170A A0G

Taiwan Semiconductor CorporationIn Stock: 1128SA170A A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SA170A B0G is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 170V
• Voltage - Breakdown (Min): 189V
• Voltage - Clamping (Max) @ Ipp: 275V
• Current - Peak Pulse (10/1000µs): 100mA
• Power - Peak Pulse: 500W
• Type: Zener
• Unidirectional Channels: 1

Mechanical Equivalence Criteria:

• Package / Case: DO-204AC, DO-15, Axial
• Mounting Type: Through Hole

Compliance Equivalence Criteria:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected
• Operating Temperature Range: -55°C ~ 175°C (TJ)

Parts meeting all these parameters are classified as direct substitutes. The SA170A A0G satisfies all substitution criteria and is identified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The SA170A A0G is a direct functional equivalent to the SA170A B0G and is suitable for replacement in all applications where the original part was specified. Both components are manufactured by Taiwan Semiconductor Corporation and share identical electrical ratings, mechanical packaging, and compliance certifications.

The primary distinction between these parts is product status: the SA170A B0G is discontinued at DiGi Electronics, while the SA170A A0G maintains active product status. This difference in availability makes the SA170A A0G the preferred selection for new procurement and ongoing production requirements.

Both parts satisfy ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for applications subject to environmental and hazardous substance restrictions. The identical operating temperature range of -55°C to 175°C (TJ) confirms thermal performance equivalence across all specified operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the SA170A A0G be used as a direct replacement for the SA170A B0G?

A: Yes. The SA170A A0G is a direct substitute. Both parts share identical electrical specifications (170V reverse standoff, 275V clamping voltage, 100mA peak pulse current, 500W peak pulse power), mechanical packaging (DO-204AC/DO-15 axial through-hole), and compliance certifications (ROHS3, REACH unaffected). No circuit modifications or design changes are required.

Q: What is the difference between the SA170A B0G and SA170A A0G?

A: The only documented difference is product status. The SA170A B0G is discontinued at DiGi Electronics, while the SA170A A0G is active. All electrical, mechanical, and compliance parameters are identical.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the DO-204AC (DO-15) axial through-hole package with identical mechanical dimensions and lead configuration. Direct PCB substitution is possible without layout modifications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SA170A B0G and SA170A A0G are ROHS3 compliant and REACH unaffected, meeting identical environmental and regulatory requirements.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the identical temperature range of -55°C to 175°C (TJ), ensuring equivalent thermal performance in all specified applications.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. The SA170A A0G can be substituted for the SA170A B0G in any existing design without circuit modifications, PCB layout changes, or performance degradation.