Request Quote
(Ships tomorrow)
CD214A-T8.5CALF Equivalent & Substitute Parts
Part Overview
The CD214A-T8.5CALF is a Transient Voltage Suppressor (TVS) diode manufactured by Bourns Inc., rated at 8.5V reverse standoff with 14.4V clamping voltage and 27.7A peak pulse current. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
TVS diodes in the DO-214AC (SMA) package serve general-purpose transient voltage suppression applications. The CD214A-T8.5CALF specifications establish the baseline electrical and mechanical parameters for identifying compatible alternatives from active manufacturers.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 8.5 | V |
| Voltage - Breakdown (Min) | 9.44 | V |
| Voltage - Clamping (Max) @ Ipp | 14.4 | V |
| Current - Peak Pulse (10/1000µs) | 27.7 | A |
| Power - Peak Pulse | 400 | W |
| Operating Temperature Range | -55 to 150 | °C (TJ) |
| Package / Case | DO-214AC, SMA | - |
| Type | Zener | - |
| Bidirectional Channels | 1 | - |
| RoHS Status | ROHS3 Compliant | - |
Substitute Part Grouping Explanation
Substitute parts are classified into two categories based on electrical parameter alignment with the CD214A-T8.5CALF:
Direct Equivalents maintain identical or near-identical electrical specifications:
- Voltage - Reverse Standoff: 8.5V
- Voltage - Clamping (Max) @ Ipp: 14.4V
- Current - Peak Pulse: 27.7–27.8A
- Power - Peak Pulse: 400W
- Package: DO-214AC (SMA)
Similar Alternatives share the same reverse standoff voltage (8.5V) and package but exhibit variations in clamping voltage, peak pulse current, or power rating. These parts are suitable when application requirements permit tolerance in transient suppression characteristics.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Operating Temperature | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| CD214A-T8.5CALF | Bourns Inc. | 8.5V | 14.4V | 27.7A | 400W | -55 to 150°C (TJ) | Obsolete | ROHS3 Compliant |
| SMAJ8.5CA | MDD | 8.5V | 14.4V | 27.8A | 400W | -50 to 150°C (TJ) | Active | ROHS3 Compliant |
| P4SMA10CA | Eaton - Electronics Division | 8.55V | 14.5V | 28.3A | 400W | -55 to 150°C (TJ) | Active | RoHS Compliant |
| SM4T10CAY | STMicroelectronics | 8.5V | 19.5V | 124A (8/20µs) | 400W | -55 to 150°C (TJ) | Active | ROHS3 Compliant |
| SMA6J8.5CA-TR | STMicroelectronics | 8.5V | 18.7V | 205A (8/20µs) | 600W | -55 to 175°C (TJ) | Active | ROHS3 Compliant |
| SMAJ7.5CA-M3/5A | Vishay General Semiconductor - Diodes Division | 7.5V | 12.9V | 31A | 400W | -55 to 150°C (TJ) | Active | ROHS3 Compliant |
| SMAJ8.0CA-M3/61 | Vishay General Semiconductor - Diodes Division | 8V | 13.6V | 29.4A | 400W | -55 to 150°C (TJ) | Active | ROHS3 Compliant |
| SMAJ8.5CA-TP | Micro Commercial Co | 8.5V | 14.4V | 27.7A | 400W | -55 to 175°C (TA) | Active | ROHS3 Compliant |
| SMAJ8.5CA-TR | STMicroelectronics | 8.5V | 19.5V | 124A (8/20µs) | 400W | -55 to 150°C (TJ) | Active | ROHS3 Compliant |
| SMAJ9.0CA-TP | Micro Commercial Co | 9V | 15.4V | 26A | 400W | -55 to 175°C (TJ) | Active | Not specified |
Engineering Selection Recommendations
Primary Substitutes (Direct Equivalents):
SMAJ8.5CA (MDD) and SMAJ8.5CA-TP (Micro Commercial Co) are direct functional equivalents. Both maintain 8.5V reverse standoff, 14.4V clamping voltage, and 27.7–27.8A peak pulse current. Both are active products with ROHS3 compliance. SMAJ8.5CA-TP offers extended operating temperature to 175°C (TA) compared to the original 150°C (TJ).
Secondary Substitutes (Compatible Alternatives):
P4SMA10CA (Eaton) provides near-equivalent performance with 8.55V standoff and 14.5V clamping, suitable for applications tolerating ±0.05V standoff variation and ±0.1V clamping variation. Operating temperature matches the original specification at -55 to 150°C.
Higher Performance Alternatives:
SMA6J8.5CA-TR (STMicroelectronics) and SMAJ8.5CA-TR (STMicroelectronics) maintain 8.5V standoff but increase clamping voltage to 18.7V and 19.5V respectively, with significantly higher peak pulse current (205A and 124A). These are suitable for applications requiring enhanced transient suppression capability. SMA6J8.5CA-TR extends operating temperature to 175°C and power rating to 600W.
Lower Voltage Alternatives:
SMAJ7.5CA-M3/5A (Vishay) and SMAJ8.0CA-M3/61 (Vishay) provide reduced standoff voltages (7.5V and 8.0V respectively) with correspondingly lower clamping voltages. These are suitable only when application requirements permit lower voltage thresholds.
Compliance Considerations:
All recommended substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. All are packaged in DO-214AC (SMA) format, ensuring mechanical compatibility.
Frequently Asked Questions (FAQ)
Q: Can SMAJ8.5CA-TP directly replace CD214A-T8.5CALF?
A: Yes. SMAJ8.5CA-TP maintains identical reverse standoff (8.5V), clamping voltage (14.4V), and peak pulse current (27.7A) specifications. Both are Zener-type, single-channel TVS diodes in DO-214AC (SMA) packaging. The primary difference is product status (active vs. obsolete) and extended operating temperature range (-55 to 175°C vs. -55 to 150°C).
Q: What is the difference between direct equivalents and similar alternatives?
A: Direct equivalents (SMAJ8.5CA, SMAJ8.5CA-TP) match all critical electrical parameters within manufacturing tolerance. Similar alternatives (P4SMA10CA, SMA6J8.5CA-TR) share the same reverse standoff voltage and package but vary in clamping voltage or peak pulse current. Selection depends on whether application requirements permit these variations.
Q: Are STMicroelectronics SMAJ8.5CA-TR and SMA6J8.5CA-TR interchangeable with the original part?
A: Both maintain 8.5V reverse standoff and DO-214AC packaging. However, clamping voltage increases to 19.5V (SMAJ8.5CA-TR) and 18.7V (SMA6J8.5CA-TR), and peak pulse current increases significantly to 124A and 205A respectively. These parts are suitable only when the application can tolerate higher clamping voltages and does not require the specific 27.7A current rating.
Q: What packaging formats are available for these substitutes?
A: All listed substitutes use DO-214AC (SMA) surface-mount packaging, matching the original CD214A-T8.5CALF. Packaging options vary by manufacturer (Tape & Reel, Cut Tape, Bulk), but the component footprint and pinout remain consistent across all alternatives.
Q: Do all substitutes meet RoHS compliance requirements?
A: Yes. All listed substitutes are ROHS3 compliant or RoHS compliant, matching the original part's environmental certification. MSL rating is 1 (Unlimited) for all parts, indicating no moisture sensitivity restrictions.
Q: Which substitute offers the best thermal performance?
A: SMA6J8.5CA-TR (STMicroelectronics) extends operating temperature to 175°C (TJ) and increases power rating to 600W, providing superior thermal performance. SMAJ8.5CA-TP (Micro Commercial Co) also reaches 175°C (TA) with standard 400W 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