CD214B-T85ALF Equivalent & Substitute Parts

Part Overview

The CD214B-T85ALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., classified as an 85V reverse standoff, 137V clamping device in SMB (DO-214AA) surface mount packaging. This component is designated as obsolete, making identification of functionally equivalent alternatives essential for design continuity and procurement planning. Substitute parts must maintain electrical performance within the specified voltage and current parameters while meeting the same environmental and compliance requirements.

Substiute Parts

CD214B-T85ALF

Bourns Inc.In Stock: 763CD214B-T85ALF Datasheet

Current PartRFQ

SMBJ85A

MeritekIn Stock: 2164SMBJ85A Datasheet

DirectRFQ

SMBJ85A

MeritekIn Stock: 2164SMBJ85A Datasheet

DirectRFQ

SMBJ85A

MeritekIn Stock: 2164SMBJ85A Datasheet

DirectRFQ

SMBJ85A-HRA

Littelfuse Inc.In Stock: 750SMBJ85A-HRA Datasheet

SimilarRFQ

SMBJ90A-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1114SMBJ90A-M3/52 Datasheet

SimilarRFQ

TV06B850J-G

Comchip TechnologyIn Stock: 842TV06B850J-G Datasheet

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TV06B850J-HF

Comchip TechnologyIn Stock: 1015TV06B850J-HF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD214B-T85ALF is determined by strict alignment with the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 85V
• Voltage - Clamping (Max) @ Ipp: 137V
• Current - Peak Pulse (10/1000µs): 4.4A nominal (tolerance range 4.38A–4.4A acceptable)
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional (1 channel)

Compliance Requirements:

• RoHS3 Compliant
• MSL 1 (Unlimited)
• ECCN: EAR99
• HTSUS: 8541.10.0080

Parts meeting all electrical parameters and packaging specifications are classified as direct substitutes. Parts with voltage ratings differing from the 85V standoff specification are classified as similar alternatives and require circuit-level evaluation.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (85V Standoff, 137V Clamping):

SMBJ85A (Meritek), SMBJ85A-HRA (Littelfuse), TV06B850J-G (Comchip), and TV06B850J-HF (Comchip) are electrically equivalent to the CD214B-T85ALF within specified tolerances. All are active products with ROHS3 compliance and MSL 1 rating. Peak pulse current ratings range from 4.38A to 4.4A, within acceptable tolerance. These parts are direct pin-compatible replacements in DO-214AA (SMB) packaging.

Similar Alternative (90V Standoff, 146V Clamping):

SMBJ90A-M3/52 (Vishay) operates at a higher voltage rating (90V standoff, 146V clamping) with reduced peak pulse current (4.1A). This part is suitable only where the higher voltage rating does not conflict with circuit design specifications. The 5V increase in standoff voltage and 9V increase in clamping voltage represent a departure from the original CD214B-T85ALF electrical profile and require circuit-level validation.

Compliance & Availability:

All substitute parts meet ROHS3 compliance, MSL 1 moisture sensitivity, and ECCN EAR99 export classification. Active product status ensures ongoing availability and supply chain continuity compared to the obsolete CD214B-T85ALF.

Frequently Asked Questions (FAQ)

Q: Can SMBJ85A (Meritek) be used as a direct replacement for CD214B-T85ALF?

A: Yes. SMBJ85A matches the CD214B-T85ALF in voltage ratings (85V standoff, 137V clamping), peak pulse current (4.38A vs. 4.4A), power dissipation (600W), and DO-214AA (SMB) packaging. Both are ROHS3 compliant with MSL 1 rating. The part is active and in stock.

Q: What is the difference between the Littelfuse SMBJ85A-HRA and Comchip TV06B850J-G?

A: Both parts are electrically equivalent with 85V standoff and 137V clamping ratings. SMBJ85A-HRA specifies an operating temperature range of -65°C to 150°C (TJ), while TV06B850J-G does not specify operating temperature limits in the provided data. Both are packaged in DO-214AA (SMB) and are ROHS3 compliant.

Q: Why is SMBJ90A-M3/52 listed as a similar alternative rather than a direct substitute?

A: SMBJ90A-M3/52 operates at 90V reverse standoff and 146V clamping voltage, compared to the 85V standoff and 137V clamping of the CD214B-T85ALF. The 5V and 9V increases in voltage ratings represent a departure from the original electrical specification. This part is suitable only if circuit design permits the higher voltage rating. Peak pulse current is also reduced to 4.1A.

Q: Are all substitute parts available in the same packaging?

A: Yes. All listed substitute parts use DO-214AA (SMB) surface mount packaging, identical to the CD214B-T85ALF. Tape & Reel (TR) packaging is available for Littelfuse SMBJ85A-HRA, Vishay SMBJ90A-M3/52, Comchip TV06B850J-G, and TV06B850J-HF.

Q: What compliance certifications apply to these TVS diodes?

A: All parts are ROHS3 compliant, MSL 1 (Unlimited moisture sensitivity), ECCN EAR99, and HTSUS 8541.10.0080. Meritek SMBJ85A is REACH Unaffected; all other parts are REACH Unaffected or not specified.

Q: Can I use SMBJ85A-HRA with an extended operating temperature range of -65°C instead of -55°C?

A: SMBJ85A-HRA specifies -65°C to 150°C (TJ) operating temperature, compared to the CD214B-T85ALF specification of -55°C to 150°C (TJ). The extended lower temperature limit of SMBJ85A-HRA provides additional margin for low-temperature applications. Verify that your circuit design requirements align with this specification.