ATV30C850JB-HF Equivalent & Substitute Parts

Part Overview

The ATV30C850JB-HF is a Transient Voltage Suppressor (TVS) diode manufactured by Comchip Technology, designed for surface mount applications in the DO-214AB (SMC) package. This component provides bidirectional transient voltage suppression with a reverse standoff voltage of 85V and peak pulse power handling of 3000W. The part is actively produced and maintains automotive-grade qualification under AEC-Q101 standards. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and access to alternative inventory sources while maintaining identical electrical and mechanical performance.

Substiute Parts

ATV30C850JB-HF

Comchip TechnologyIn Stock: 1073ATV30C850JB-HF Datasheet

Current PartRFQ

SMDJ85CA

Alpha & Omega Semiconductor Inc.In Stock: 1534SMDJ85CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ATV30C850JB-HF are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

• Voltage - Reverse Standoff (Typ): 85V
• Voltage - Breakdown (Min): 94.4V
• Voltage - Clamping (Max) @ Ipp: 137V
• Current - Peak Pulse (10/1000µs): 21.9A
• Power - Peak Pulse: 3000W (3kW)
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Type: Zener, Bidirectional (1 Channel)

The SMDJ85CA from Alpha & Omega Semiconductor Inc. meets all specified electrical parameters and mechanical requirements, qualifying it as a direct substitute for the ATV30C850JB-HF in applications requiring identical transient voltage suppression performance.

Parameter Comparison

Engineering Selection Recommendations

Both the ATV30C850JB-HF and SMDJ85CA are active production components with identical electrical specifications and mechanical compatibility. Selection between these parts should be based on:

• Inventory availability and lead time requirements
• Supply chain preferences and established vendor relationships
• Compliance certifications: Both parts are ROHS3 compliant and REACH unaffected
• Manufacturing qualification: ATV30C850JB-HF carries AEC-Q101 automotive qualification; SMDJ85CA does not specify automotive qualification in the provided data
• Cost and procurement terms from respective suppliers

For applications requiring automotive-grade qualification, the ATV30C850JB-HF maintains explicit AEC-Q101 certification. For general-purpose applications, the SMDJ85CA provides equivalent electrical performance with identical package and thermal characteristics.

Frequently Asked Questions (FAQ)

Q: Can SMDJ85CA be used as a direct replacement for ATV30C850JB-HF in automotive applications?

A: Both parts share identical electrical parameters and package specifications. However, the ATV30C850JB-HF carries explicit AEC-Q101 automotive qualification. For automotive applications requiring documented qualification, verify that SMDJ85CA meets your specific qualification requirements before substitution.

Q: Are the DO-214AB packages from both manufacturers physically identical?

A: Both parts use the DO-214AB (SMC) package. Physical dimensions and PCB footprints are standardized for this package type, ensuring mechanical compatibility in surface mount applications.

Q: What is the significance of the 85V reverse standoff voltage specification?

A: The 85V reverse standoff voltage indicates the maximum continuous voltage the TVS diode can withstand without conducting. This parameter, combined with the 94.4V minimum breakdown voltage and 137V maximum clamping voltage, defines the transient suppression window for circuit protection.

Q: Do both parts have identical thermal performance?

A: Both parts operate across the same temperature range (-55°C ~ 150°C junction temperature) and share identical peak pulse power ratings (3000W). Thermal performance is equivalent for both components.

Q: What is the difference between the base product numbers ATV30C850 and SMDJ85?

A: Base product numbers identify the core device family. The suffix designations (JB-HF for Comchip, CA for Alpha & Omega) indicate specific voltage ratings and packaging configurations within each manufacturer's product line. Both base numbers represent 85V TVS diodes in equivalent packages.