P6SMB22CA-Q Equivalent & Substitute Parts

Part Overview

The P6SMB22CA-Q is an active-status transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for telecom applications requiring transient protection. This bidirectional zener diode operates in the 18.8V reverse standoff range with a 30.6V maximum clamping voltage and 19.9A peak pulse current capability. The component is packaged in DO-214AA (SMB) surface mount format and meets automotive-grade AEC-Q101 qualification standards.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter ranges, enabling procurement flexibility and supply chain continuity for this active product line.

Substiute Parts

P6SMB22CA-Q

Bourns Inc.In Stock: 1078P6SMB22CA-Q Datasheet

Current PartRFQ

SMBJE18CAH

Eaton - Electronics DivisionIn Stock: 3396SMBJE18CAH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB22CA-Q is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 18V to 18.8V range
• Voltage - Clamping (Max) @ Ipp: 29.2V to 30.6V range
• Current - Peak Pulse (10/1000µs): ≥19.9A
• Power - Peak Pulse: 600W minimum

Mechanical & Compliance Criteria:

• Package / Case: DO-214AA (SMB) surface mount only
• Mounting Type: Surface mount
• Operating Temperature: -55°C to 150°C (TJ) minimum
• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant
• Bidirectional Channels: 1
• Type: Zener

The SMBJE18CAH from Eaton - Electronics Division meets all substitution criteria within these parameter boundaries.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: P6SMB22CA-Q (Bourns Inc.)

The P6SMB22CA-Q is the specified component with active product status and 1000 pieces in current inventory. This part maintains full compliance with AEC-Q101 automotive qualification and ROHS3 requirements. Selection of the primary part is appropriate when supply availability and exact parameter matching are priorities.

Approved Substitute: SMBJE18CAH (Eaton - Electronics Division)

The SMBJE18CAH qualifies as a direct substitute based on equivalent electrical performance within specified parameter ranges and identical mechanical compatibility. This part demonstrates:

• Active product status
• Identical package format (DO-214AA/SMB)
• Equivalent operating temperature range (-55°C to 150°C TJ)
• Identical AEC-Q101 automotive qualification
• Identical ROHS3 compliance status
• Peak pulse current capability (20.6A) exceeding the requirement (19.9A)
• Clamping voltage (29.2V) within the acceptable range (30.6V maximum)
• Higher inventory availability (3295 pieces in stock)

Selection of SMBJE18CAH is appropriate when supply chain continuity, extended lead times, or inventory optimization require an alternative source while maintaining full functional and compliance equivalence.

Frequently Asked Questions (FAQ)

Q: Can SMBJE18CAH be used as a direct replacement for P6SMB22CA-Q in existing designs?

A: Yes. Both parts share identical package format (DO-214AA/SMB), operating temperature range (-55°C to 150°C TJ), and AEC-Q101 automotive qualification. Electrical parameters fall within compatible ranges: reverse standoff voltage (18V vs. 18.8V), clamping voltage (29.2V vs. 30.6V), and peak pulse current (20.6A vs. 19.9A). No circuit redesign is required.

Q: What are the key electrical differences between these parts?

A: The SMBJE18CAH operates at a slightly lower reverse standoff voltage (18V vs. 18.8V) and clamping voltage (29.2V vs. 30.6V), while providing higher peak pulse current capability (20.6A vs. 19.9A). Both parts deliver 600W peak pulse power. These differences remain within acceptable substitution tolerances for telecom transient protection applications.

Q: Are both parts compliant with automotive and environmental standards?

A: Yes. Both P6SMB22CA-Q and SMBJE18CAH carry AEC-Q101 automotive qualification, ROHS3 compliance, and REACH unaffected status. Moisture sensitivity level is 1 (Unlimited) for both parts, indicating no special handling requirements.

Q: What is the mechanical compatibility between these parts?

A: Both parts use identical surface mount packaging: DO-214AA (SMB) case format. PCB footprints, solder pad layouts, and mounting procedures are identical. No mechanical modifications to existing designs are necessary.

Q: Which part should be selected for new designs?

A: For new designs, either part is acceptable based on availability and supply chain strategy. The P6SMB22CA-Q (Bourns) and SMBJE18CAH (Eaton) are functionally equivalent. Selection should be based on procurement lead times, inventory levels, and supplier relationship considerations.