ATV50C151JB-HF Equivalent & Substitute Parts

Part Overview

The ATV50C151JB-HF is a Transient Voltage Suppressor (TVS) diode manufactured by Comchip Technology, designed for surface mount applications in DO-214AB (SMC) packaging. This component provides transient voltage protection with a 150V reverse standoff voltage and 243V maximum clamping voltage. The part is actively produced and qualified to AEC-Q101 automotive standards, making it suitable for automotive and industrial protection circuits. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to supply constraints, design flexibility, or application-specific requirements.

Substiute Parts

ATV50C151JB-HF

Comchip TechnologyIn Stock: 854ATV50C151JB-HF Datasheet

Current PartRFQ

5.0SMDJ150CA-T7

LittelfuseIn Stock: 20825.0SMDJ150CA-T7 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATV50C151JB-HF is permissible when the following electrical and mechanical parameters match:

• Voltage - Reverse Standoff (Typ): 150V
• Voltage - Breakdown (Min): 167V
• Voltage - Clamping (Max) @ Ipp: 243V
• Current - Peak Pulse (10/1000µs): 20.6A
• Power - Peak Pulse: 5000W
• Package / Case: DO-214AB (SMC or equivalent variant)
• Bidirectional Channels: 1
• Type: Zener
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1

The substitute part 5.0SMDJ150CA-T7 from Littelfuse meets all these criteria and is therefore electrically and mechanically interchangeable with the ATV50C151JB-HF in circuit applications requiring 150V TVS protection.

Parameter Comparison

Engineering Selection Recommendations

Both the ATV50C151JB-HF and 5.0SMDJ150CA-T7 are active production components with ROHS3 compliance and AEC-Q101 qualification (Comchip part). The Littelfuse substitute extends the operating temperature range to -65°C, providing additional margin in low-temperature environments. Both parts carry MSL 1 rating, indicating unlimited shelf life under standard storage conditions. Selection between these parts should be based on availability, lead time, and supplier preference, as electrical and mechanical performance are equivalent for circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can the 5.0SMDJ150CA-T7 be used as a direct replacement for the ATV50C151JB-HF?

A: Yes. Both parts share identical electrical specifications (150V standoff, 243V clamping, 20.6A peak pulse current, 5000W peak power) and are packaged in DO-214AB surface mount variants. The Littelfuse part offers an extended lower operating temperature limit (-65°C vs. -55°C), making it suitable for all applications where the Comchip part is specified.

Q: Are there package compatibility concerns between DO-214AB (SMC) and DO-214AB (SMCJ)?

A: No. Both designations refer to the same physical DO-214AB package footprint used for surface mount applications. The SMCJ designation is Littelfuse's internal package classification and does not affect PCB layout, reflow soldering, or mechanical fit.

Q: What is the significance of the MSL 1 rating?

A: MSL 1 indicates unlimited moisture sensitivity, meaning the component does not require special moisture control during storage or handling. Standard warehouse conditions are acceptable without desiccant packing or time-limited shelf life restrictions.

Q: Do both parts meet automotive qualification standards?

A: The ATV50C151JB-HF carries AEC-Q101 qualification. The 5.0SMDJ150CA-T7 specifications provided do not explicitly list AEC-Q101 qualification in the input data. Verification of automotive qualification status for the Littelfuse part should be confirmed through the manufacturer's datasheet if automotive application is required.

Q: What are the key parameters that determine substitutability?

A: Substitutability is determined by matching: reverse standoff voltage (150V), breakdown voltage (167V minimum), clamping voltage (243V maximum), peak pulse current (20.6A), peak pulse power (5000W), package type (DO-214AB), channel configuration (1 bidirectional), and compliance ratings (ROHS3, MSL 1). All these parameters are identical between the two parts.