SMF16A-M3-18 Equivalent & Substitute Parts

Part Overview

The SMF16A-M3-18 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for general-purpose transient voltage suppression applications, featuring a 16V reverse standoff voltage and 26V maximum clamping voltage. The device is housed in a DO-219AB (SMF) surface mount package and is currently in active production status. Equivalent and substitute parts are identified when identical electrical performance parameters are maintained across alternative packaging formats or manufacturer sources while preserving the core functional specifications.

Substiute Parts

SMF16A-M3-18

Vishay General Semiconductor - Diodes DivisionIn Stock: 1059SMF16A-M3-18 Datasheet

Current PartRFQ

SMF16A-TP

Micro Commercial CoIn Stock: 2252SMF16A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMF16A-M3-18 are qualified based on electrical parameter equivalence across the following criteria:

Voltage specifications must match exactly: 16V reverse standoff voltage, 17.8V minimum breakdown voltage, and 26V maximum clamping voltage at peak pulse current.

Current and power ratings must be identical: 7.7A peak pulse current (10/1000µs) and 200W peak pulse power.

Operating temperature range must encompass or equal the original specification: -65°C to 175°C.

Type classification must remain Zener diode with single unidirectional channel configuration.

Compliance certifications must maintain ROHS3 compliance and MSL Level 1 rating.

Packaging format may differ (DO-219AB versus SOD-123F) provided the component is surface mount and suitable for the intended application footprint.

The SMF16A-TP qualifies as a manufacturer-recommended substitute based on these electrical equivalencies, despite the package format change from DO-219AB to SOD-123FL.

Parameter Comparison

Engineering Selection Recommendations

Both the SMF16A-M3-18 and SMF16A-TP maintain active production status and full ROHS3 compliance with MSL Level 1 rating, ensuring long-term availability and environmental regulatory adherence.

Selection between these parts is determined by PCB layout constraints and footprint requirements. The SMF16A-M3-18 utilizes the DO-219AB package, while the SMF16A-TP uses the SOD-123F package. These packages have different physical dimensions and land patterns; therefore, footprint compatibility must be verified before substitution.

Electrical performance is functionally equivalent across all specified parameters. Both devices are qualified for general-purpose transient voltage suppression applications with identical voltage clamping and current handling characteristics.

Inventory availability may influence selection. The SMF16A-M3-18 has 1003 pieces in stock, while the SMF16A-TP has 2200 pieces available.

Frequently Asked Questions (FAQ)

Q: Can the SMF16A-TP be used as a direct replacement for the SMF16A-M3-18?

A: Electrical substitution is valid based on identical voltage, current, and power specifications. However, package format differs (DO-219AB versus SOD-123F), requiring PCB footprint verification before implementation.

Q: What are the key electrical parameters that define substitution eligibility?

A: The critical parameters are: 16V reverse standoff voltage, 17.8V minimum breakdown voltage, 26V maximum clamping voltage, 7.7A peak pulse current, and 200W peak pulse power. Any substitute must match these values exactly.

Q: Are there compliance or certification differences between these parts?

A: Both parts maintain identical ROHS3 compliance status and MSL Level 1 rating. No compliance differentiation exists.

Q: What is the significance of the package format difference?

A: The DO-219AB (SMF) and SOD-123F (SOD-123FL) packages have different physical dimensions, lead configurations, and PCB land patterns. The selected package must match the circuit board design. Substitution requires layout compatibility verification.

Q: Can capacitance specifications affect substitution decisions?

A: The SMF16A-M3-18 specifies 343pF capacitance at 1MHz. The SMF16A-TP does not provide this parameter in the available data. If capacitance is a critical design parameter, this difference must be evaluated against application requirements.

Q: What temperature range applies to each part?

A: Both parts operate across -65°C to 175°C. The SMF16A-M3-18 specifies this as junction temperature (TJ), while the SMF16A-TP specifies ambient temperature (TA). This distinction reflects different measurement methodologies but does not affect functional equivalence.