CD214B-T170CALF Equivalent & Substitute Parts

Part Overview

The CD214B-T170CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface mount applications. This component features a 170V reverse standoff voltage with 275V maximum clamping voltage and 2.2A peak pulse current capability in a DO-214AA (SMB) package. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements.

Substiute Parts

CD214B-T170CALF

Bourns Inc.In Stock: 1018CD214B-T170CALF Datasheet

Current PartRFQ

SMBJ170CA

MeritekIn Stock: 20308SMBJ170CA Datasheet

DirectRFQ

SMBJ170CA

MeritekIn Stock: 20308SMBJ170CA Datasheet

DirectRFQ

SMBJ170CA

MeritekIn Stock: 20308SMBJ170CA Datasheet

DirectRFQ

SMBJ170CA-HR

Littelfuse Inc.In Stock: 4244SMBJ170CA-HR Datasheet

SimilarRFQ

SMBJ170CA-TP

Micro Commercial CoIn Stock: 4071SMBJ170CA-TP Datasheet

SimilarRFQ

SMBJ170CA-TR

STMicroelectronicsIn Stock: 15383SMBJ170CA-TR Datasheet

SimilarRFQ

TV06B171JB-HF

Comchip TechnologyIn Stock: 1136TV06B171JB-HF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CD214B-T170CALF is determined by strict electrical and mechanical parameter matching:

Critical Parameters for Substitution:

• Voltage - Reverse Standoff: 170V (±tolerance)
• Voltage - Breakdown (Min): 189V
• Voltage - Clamping (Max) @ Ipp: 275V
• Current - Peak Pulse (10/1000µs): 2.2A or equivalent
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB)
• Bidirectional Channels: 1
• Type: Zener

All identified substitute parts maintain these core electrical specifications within the allowed parameter ranges. Packaging variants (tape & reel, cut tape, digi-reel) represent different distribution formats of electrically identical components and do not affect functional substitution.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are active products with ROHS3 compliance and MSL Level 1 rating, meeting current regulatory requirements. Selection among substitutes should be based on:

Availability and Lead Time: SMBJ170CA (Meritek) offers the highest inventory level at 20,240 units. SMBJ170CA-TR (STMicroelectronics) provides 15,292 units with established supply chain presence. SMBJ170CA-HR (Littelfuse) and SMBJ170CA-TP (Micro Commercial Co) offer 4,195 and 4,001 units respectively.

Temperature Range Considerations: SMBJ170CA-TP (Micro Commercial Co) extends to -55°C ~ 175°C, providing the widest operating range. SMBJ170CA-HR (Littelfuse) operates to -65°C minimum, offering lower temperature capability. Standard substitutes operate within -55°C ~ 150°C.

Packaging Format: All parts are available in DO-214AA (SMB) surface mount package. Tape & Reel and Cut Tape variants are distribution formats only and do not affect electrical performance or PCB compatibility.

Current Rating Tolerance: SMBJ170CA (Meritek) and TV06B171JB-HF (Comchip) specify 2.18A peak pulse current, which remains within acceptable tolerance for 2.2A-rated applications. Remaining substitutes maintain the full 2.2A specification.

Frequently Asked Questions (FAQ)

Q: Can I use SMBJ170CA (Meritek) as a direct replacement for CD214B-T170CALF?

A: Yes. Both parts share identical voltage specifications (170V standoff, 189V breakdown minimum, 275V clamping maximum), power rating (600W), package format (DO-214AA/SMB), and compliance certifications. The 2.18A vs. 2.2A peak pulse current difference is within acceptable tolerance for general-purpose TVS applications.

Q: What is the difference between SMBJ170CA-HR, SMBJ170CA-TP, and SMBJ170CA-TR?

A: These are electrically identical parts from different manufacturers (Littelfuse, Micro Commercial Co, and STMicroelectronics respectively) with identical electrical specifications. The suffix designations indicate packaging format (HR, TP, TR) and manufacturer-specific product lines. Selection should be based on availability, lead time, and supply chain preference.

Q: Does the operating temperature range affect substitution compatibility?

A: Operating temperature range does not prevent substitution if your application operates within the specified range of the substitute part. If your circuit operates below -55°C, SMBJ170CA-HR (Littelfuse, -65°C minimum) is required. If operation extends above 150°C, SMBJ170CA-TP (Micro Commercial Co, 175°C maximum) is necessary. For standard -55°C to 150°C operation, all substitutes are compatible.

Q: Are tape & reel and cut tape versions electrically different?

A: No. Packaging format designations (Tape & Reel, Cut Tape, Digi-Reel) represent distribution and handling methods only. The electrical specifications, performance characteristics, and PCB compatibility remain identical. Selection between formats depends on assembly equipment and procurement requirements.

Q: Why is the CD214B-T170CALF obsolete?

A: The CD214B-T170CALF is listed as obsolete by Bourns Inc. Active substitute parts from multiple manufacturers provide equivalent electrical performance with current product status, ensuring long-term availability and supply chain continuity.

Q: Can I mix different substitute manufacturers in the same production run?

A: Yes. All substitute parts meet identical electrical specifications, RoHS3 compliance, and MSL Level 1 requirements. Cross-manufacturer substitution is electrically and mechanically compatible. Verify procurement and quality documentation requirements with your supply chain management process.