Request Quote
(Ships tomorrow)
CD214B-T45CALF Equivalent & Substitute Parts
Part Overview
The CD214B-T45CALF is a 45V Transient Voltage Suppressor (TVS) diode manufactured by Bourns Inc., rated for 72.7V clamping voltage and 8.3A peak pulse current in a surface mount SMB (DO-214AA) package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part is ROHS3 compliant and suitable for general-purpose transient voltage suppression applications across industrial and commercial electronics.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 45 | V |
| Voltage - Breakdown (Min) | 50 | V |
| Voltage - Clamping (Max) @ Ipp | 72.7 | V |
| Current - Peak Pulse (10/1000µs) | 8.3 | A |
| Power - Peak Pulse | 600 | W |
| Operating Temperature Range | -55 to 150 | °C (TJ) |
| Package / Case | DO-214AA, SMB | — |
| Bidirectional Channels | 1 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the CD214B-T45CALF are classified into two categories based on electrical parameter alignment:
Direct Equivalents (Identical Electrical Specifications): Parts that match all critical electrical parameters: 45V reverse standoff voltage, 50V minimum breakdown voltage, 72.7V maximum clamping voltage, and 8.3A peak pulse current. These parts maintain identical functional performance and are interchangeable at the circuit level.
Similar Alternatives (Comparable Voltage Ratings): Parts with voltage ratings within the general 40V to 47.8V standoff range and comparable clamping voltages (64.5V to 77V). These parts operate in the same application space but with slightly different voltage thresholds. Selection depends on circuit tolerance requirements and specific transient protection needs.
Key Parameters for Substitution Determination:
- Voltage - Reverse Standoff (Typ): 40V to 47.8V acceptable range
- Voltage - Clamping (Max) @ Ipp: 64.5V to 77V acceptable range
- Current - Peak Pulse (10/1000µs): 7.9A to 9.3A acceptable range
- Package / Case: DO-214AA, SMB (mandatory match)
- Mounting Type: Surface Mount (mandatory match)
Parameter Comparison
| Part Number | Manufacturer | Standoff Voltage (V) | Breakdown Min (V) | Clamping Max (V) | Peak Pulse Current (A) | Operating Temp (°C) | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| CD214B-T45CALF | Bourns Inc. | 45 | 50 | 72.7 | 8.3 | -55 to 150 | Obsolete | ROHS3 Compliant |
| SMBJ45CA | MDD | 45 | 50 | 72.7 | 8.3 | -50 to 150 | Active | ROHS3 Compliant |
| TV06B450JB-HF | Comchip Technology | 45 | 50 | 72.7 | 8.25 | Not specified | Active | ROHS3 Compliant |
| SMBJ45CA-TP | Micro Commercial Co | 45 | 50 | 72.7 | 8.3 | -55 to 175 | Active | ROHS3 Compliant |
| SMBJ43CA | MDD | 43 | 47.8 | 69.4 | 8.7 | -50 to 150 | Active | ROHS3 Compliant |
| SMBJ43CA-TP | Micro Commercial Co | 43 | 47.8 | 69.4 | 8.6 | -55 to 175 | Active | ROHS3 Compliant |
| TPSMB56CA | Littelfuse Inc. | 47.8 | 53.2 | 77 | 7.9 | -65 to 175 | Active | ROHS3 Compliant |
| SMBJ40CA | MDD | 40 | 44.4 | 64.5 | 9.3 | -50 to 150 | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For Direct Replacement (Identical Electrical Performance):
SMBJ45CA (MDD) and SMBJ45CA-TP (Micro Commercial Co) are direct electrical equivalents with identical 45V standoff, 50V breakdown, and 72.7V clamping specifications. Both are active products with ROHS3 compliance. SMBJ45CA-TP offers extended operating temperature range (-55 to 175°C) compared to the original part's -55 to 150°C specification, providing additional thermal margin. TV06B450JB-HF (Comchip Technology) matches electrical specifications with 8.25A peak pulse current, within acceptable tolerance of the original 8.3A rating.
For Applications Tolerant of Lower Voltage Thresholds:
SMBJ43CA and SMBJ43CA-TP operate at 43V standoff with 69.4V clamping voltage, suitable for circuits where slightly lower protection thresholds are acceptable. SMBJ43CA-TP provides the widest operating temperature range (-55 to 175°C) among all substitutes.
For Applications Requiring Higher Voltage Margin:
TPSMB56CA (Littelfuse Inc.) operates at 47.8V standoff with 77V clamping voltage and includes AEC-Q101 automotive qualification. This part is appropriate for applications requiring higher transient voltage tolerance and automotive-grade reliability.
For Lower Voltage Protection:
SMBJ40CA operates at 40V standoff with 64.5V clamping voltage and 9.3A peak pulse current, suitable for circuits requiring lower protection thresholds.
All substitute parts maintain DO-214AA (SMB) package compatibility, surface mount configuration, 600W peak pulse power rating, and ROHS3 compliance with MSL 1 (Unlimited) moisture sensitivity.
Frequently Asked Questions (FAQ)
Q: Can SMBJ45CA directly replace CD214B-T45CALF?
A: Yes. SMBJ45CA matches all critical electrical parameters: 45V standoff voltage, 50V breakdown voltage, 72.7V clamping voltage, and 8.3A peak pulse current. Both use DO-214AA (SMB) surface mount packaging. SMBJ45CA is an active product, addressing the obsolescence of the original part.
Q: What is the difference between SMBJ45CA and SMBJ45CA-TP?
A: Both parts have identical electrical specifications. SMBJ45CA-TP is supplied in Tape & Reel (TR) packaging and offers an extended operating temperature range of -55 to 175°C compared to SMBJ45CA's -50 to 150°C. Select SMBJ45CA-TP for applications requiring higher temperature operation or tape-and-reel format for automated assembly.
Q: Can I use SMBJ43CA instead of CD214B-T45CALF?
A: SMBJ43CA is a similar alternative with 43V standoff and 69.4V clamping voltage, approximately 2V lower than the original part. This substitution is valid only if your circuit design tolerates lower protection thresholds. Verify that transient voltages in your application do not exceed 69.4V clamping specification.
Q: What makes TPSMB56CA different from other substitutes?
A: TPSMB56CA operates at 47.8V standoff with 77V clamping voltage, providing higher voltage margin than the original part. It includes AEC-Q101 automotive qualification and operates across -65 to 175°C, making it suitable for automotive and high-reliability applications requiring enhanced transient protection.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the environmental compliance of the original CD214B-T45CALF.
Q: Does package type affect substitution?
A: All substitute parts use DO-214AA (SMB) surface mount packaging, maintaining mechanical and electrical compatibility. Packaging format differences (bulk vs. Tape & Reel) do not affect circuit performance but may influence assembly process requirements.
Q: What is the acceptable tolerance range for peak pulse current?
A: The original part specifies 8.3A peak pulse current. Substitute parts with 7.9A to 9.3A peak pulse current are acceptable, as this range maintains comparable transient suppression capability within the 600W peak pulse power rating.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts