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SMCJ6.5CA-M3/9AT Equivalent & Substitute Parts
Part Overview
The SMCJ6.5CA-M3/9AT is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 6.5V reverse standoff voltage class and provides transient protection for general-purpose applications. The part is active in production status and widely used in circuit protection applications where temporary voltage spikes must be clamped to safe levels. Equivalent and substitute parts are identified based on matching electrical performance characteristics and mechanical compatibility within the DO-214AB (SMC) package family.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 6.5V |
| Voltage - Breakdown (Min) | 7.22V |
| Voltage - Clamping (Max) @ Ipp | 11.2V |
| Current - Peak Pulse (10/1000µs) | 133.9A |
| Power - Peak Pulse | 1500W |
| Package / Case | DO-214AB, SMC |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| Type | Zener |
| Bidirectional Channels | 1 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the SMCJ6.5CA-M3/9AT are classified into two functional groups based on peak pulse current and power dissipation capacity:
Group 1: Direct Electrical Equivalents (1500W Class) These parts maintain identical voltage specifications (6.5V reverse standoff, 7.22V breakdown minimum, 11.2V clamping maximum) and peak pulse current of 133.9A with 1500W peak pulse power. They are interchangeable in applications where the original 1500W power rating is specified. Parts in this group include SMCJ6.5CA-E3/57T, SMCJ6.5CA-E3/9AT, SMCJ6.5CA-13-F, and SMCJ6V5CA.
Group 2: Higher Power Alternatives (3000W Class) These parts maintain identical voltage specifications but provide doubled peak pulse current (267.9A) and doubled peak pulse power (3000W). They are suitable for applications requiring enhanced transient energy absorption. Parts in this group include SMDJ6.5CA, SMLJ6.5CA, and SMLJ6.5CA-TP. These parts are not direct replacements but are compatible alternatives when higher energy dissipation is required.
Key Substitution Parameters:
- Voltage - Reverse Standoff: 6.5V (all parts)
- Voltage - Clamping (Max) @ Ipp: 11.2V (all parts)
- Package / Case: DO-214AB, SMC (all parts)
- Mounting Type: Surface Mount (all parts)
- RoHS Status: ROHS3 Compliant (all parts)
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff | Voltage - Breakdown (Min) | Voltage - Clamping (Max) | Current - Peak Pulse | Power - Peak Pulse | Operating Temperature | Package | Inventory |
|---|---|---|---|---|---|---|---|---|---|
| SMCJ6.5CA-M3/9AT | Vishay | 6.5V | 7.22V | 11.2V | 133.9A | 1500W | -55°C ~ 150°C | DO-214AB (SMC) | 908 Pcs |
| SMCJ6.5CA-E3/57T | Vishay | 6.5V | 7.22V | 11.2V | 133.9A | 1500W | -55°C ~ 150°C | DO-214AB (SMCJ) | 34300 Pcs |
| SMCJ6.5CA-E3/9AT | Vishay | 6.5V | 7.22V | 11.2V | 133.9A | 1500W | -55°C ~ 150°C | DO-214AB (SMCJ) | 4242 Pcs |
| SMCJ6.5CA-13-F | Diodes Incorporated | 6.5V | 7.22V | 11.2V | 133.9A | 1500W | -55°C ~ 150°C | DO-214AB (SMC) | 29300 Pcs |
| SMCJ6V5CA | Taiwan Semiconductor Corporation | 6.5V | 7.22V | 11.2V | 133.9A | 1500W | Not specified | DO-214AB (SMC) | 12400 Pcs |
| SMCJ6.5CA-TP | Micro Commercial Co | 6.5V | 7.2V | 11.2V | 134A | 1500W | -55°C ~ 175°C | DO-214AB (SMC) | 3354 Pcs |
| SMDJ6.5CA | Alpha & Omega Semiconductor Inc. | 6.5V | 7.22V | 11.2V | 267.9A | 3000W | -55°C ~ 150°C | DO-214AB | 61300 Pcs |
| SMLJ6.5CA | Bourns Inc. | 6.5V | 7.22V | 11.2V | 267.9A | 3000W | -55°C ~ 150°C | DO-214AB (SMC) | 1952 Pcs |
| SMLJ6.5CA-TP | Micro Commercial Co | 6.5V | 7.22V | 11.2V | 267.9A | 3000W | -55°C ~ 175°C | DO-214AB (SMC) | 6071 Pcs |
Engineering Selection Recommendations
For Direct Replacement (1500W Class): SMCJ6.5CA-E3/57T from Vishay offers the highest inventory availability (34300 pcs) with identical electrical specifications and operating temperature range. SMCJ6.5CA-13-F from Diodes Incorporated provides an alternative from a different manufacturer with equivalent performance and substantial stock (29300 pcs). Both maintain ROHS3 compliance and MSL 1 rating.
For Extended Temperature Operation: SMCJ6.5CA-TP and SMLJ6.5CA-TP from Micro Commercial Co extend the upper operating temperature to 175°C compared to the standard 150°C. Selection depends on whether the 1500W or 3000W power class is required for the application.
For Higher Energy Dissipation: SMDJ6.5CA from Alpha & Omega Semiconductor Inc. and SMLJ6.5CA from Bourns Inc. provide doubled peak pulse current and power ratings (267.9A, 3000W). These are suitable only when circuit design requires enhanced transient energy absorption beyond the 1500W specification.
Compliance Considerations: All substitute parts maintain ROHS3 compliance. SMLJ6.5CA carries REACH Affected status, while all other parts are REACH Unaffected. MSL 1 rating is consistent across all parts except SMCJ6V5CA, where MSL is not specified.
Frequently Asked Questions (FAQ)
Q: Can SMCJ6.5CA-E3/57T be used as a direct replacement for SMCJ6.5CA-M3/9AT? A: Yes. Both parts share identical voltage specifications (6.5V reverse standoff, 7.22V breakdown, 11.2V clamping), peak pulse current (133.9A), power rating (1500W), operating temperature range (-55°C to 150°C), and DO-214AB SMC package. The difference is in tape reel configuration and manufacturer tape specifications, which do not affect electrical performance.
Q: What is the difference between the 1500W and 3000W part groups? A: The 1500W group (SMCJ series) handles 133.9A peak pulse current, while the 3000W group (SMDJ and SMLJ series) handles 267.9A peak pulse current. Both maintain identical voltage clamping characteristics. Selection depends on the transient energy that must be absorbed in the application. Higher power ratings provide greater margin for severe transient events.
Q: Is SMCJ6V5CA from Taiwan Semiconductor Corporation a suitable substitute? A: SMCJ6V5CA matches all critical electrical parameters and package specifications. However, the operating temperature range is not specified in available data. Verification of temperature performance is necessary before selection for temperature-critical applications.
Q: Can I use SMLJ6.5CA-TP in place of SMCJ6.5CA-M3/9AT? A: SMLJ6.5CA-TP is electrically compatible but provides doubled power dissipation (3000W vs 1500W). It is suitable only if the circuit design can accommodate the higher power rating or if enhanced transient protection is required. The extended operating temperature range (-55°C to 175°C) is an additional benefit for high-temperature environments.
Q: Are all substitute parts in the same DO-214AB package? A: Yes. All substitute parts use the DO-214AB (SMC) surface mount package, ensuring mechanical and footprint compatibility. Tape reel configurations may vary (designated by suffixes such as -E3/57T, -TP, -13-F), but these affect only handling and assembly processes, not component performance.
Q: What is the significance of the MSL 1 rating? A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture bake requirements. All substitute parts carry MSL 1 except SMCJ6V5CA, where MSL is not specified. This ensures long-term storage compatibility without special handling procedures.
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