VS5V0BB1FST40NB Equivalent & Substitute Parts

Part Overview

The VS5V0BB1FST40NB is a Transient Voltage Suppressor (TVS) diode manufactured by Rohm Semiconductor, designed for general-purpose overvoltage protection applications. This component features a 5V reverse standoff voltage with a 9.5V maximum clamping voltage and 4.75A peak pulse current rating in an SMD0402 surface mount package. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

VS5V0BB1FST40NB

Rohm SemiconductorIn Stock: 1127VS5V0BB1FST40NB Datasheet

Current PartRFQ

TPD1E6B06DPLR

Texas InstrumentsIn Stock: 305500TPD1E6B06DPLR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VS5V0BB1FST40NB is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff: 5V (Max) — substitute must maintain identical standoff voltage
• Voltage - Breakdown (Min): 5.3V — substitute must support equivalent breakdown threshold
• Voltage - Clamping (Max) @ Ipp: substitute clamping voltage must not exceed application tolerance
• Current - Peak Pulse (8/20µs): substitute must support minimum 4.75A pulse current
• Power - Peak Pulse: substitute must handle minimum 45W dissipation
• Bidirectional Channels: 1 — single-channel configuration required
• Type: Zener — TVS diode technology classification

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount — SMD package required
• Package / Case: 01005 (0402 Metric) or equivalent footprint compatibility
• Operating Temperature Range: substitute must support -55°C ~ 150°C or equivalent thermal envelope

Compliance Requirements:

• RoHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The TPD1E6B06DPLR from Texas Instruments qualifies as a substitute based on matching the core electrical parameters (5V standoff, single-channel Zener TVS, surface mount configuration) and compliance certifications, despite differences in package footprint and clamping voltage specification.

Parameter Comparison

Engineering Selection Recommendations

The TPD1E6B06DPLR is an active product from Texas Instruments and represents the primary substitute for the obsolete VS5V0BB1FST40NB. Both components meet ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity requirements, ensuring regulatory and environmental compatibility.

The substitute maintains electrical equivalence in reverse standoff voltage (5V), peak pulse current (5A vs. 4.75A), and power dissipation capability (50W vs. 45W). The higher clamping voltage specification (14V vs. 9.5V) and extended operating temperature range of the original part (-55°C ~ 150°C vs. -40°C ~ 125°C) should be evaluated against specific application requirements.

Package footprint differences between the original SMD0402 and the substitute's 2-X2SON (0.6x0.3) configuration require PCB layout verification prior to implementation. Active product status and established supply chain availability of the TPD1E6B06DPLR support long-term design continuity.

Frequently Asked Questions (FAQ)

Q: Can the TPD1E6B06DPLR directly replace the VS5V0BB1FST40NB without PCB modifications?

A: Package footprints differ between the two components. The original uses SMD0402 (01005 Metric), while the substitute uses 2-X2SON (0.6x0.3). PCB layout modifications are required for physical mounting compatibility.

Q: What is the significance of the higher clamping voltage (14V vs. 9.5V) in the substitute?

A: The substitute's 14V maximum clamping voltage is higher than the original's 9.5V specification. Applications requiring the lower clamping voltage threshold must verify that the substitute's performance remains acceptable within circuit protection requirements.

Q: Are both components RoHS compliant?

A: Yes, both the VS5V0BB1FST40NB and TPD1E6B06DPLR are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, meeting current environmental and regulatory standards.

Q: Why is the operating temperature range different between the two parts?

A: The original part supports -55°C ~ 150°C (junction temperature), while the substitute supports -40°C ~ 125°C (ambient temperature). Applications requiring the extended low-temperature performance of the original should confirm the substitute's thermal envelope is sufficient.

Q: Is the TPD1E6B06DPLR currently available?

A: Yes, the TPD1E6B06DPLR is classified as an active product with established supply chain availability, unlike the obsolete VS5V0BB1FST40NB.