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SMBJ7.0CA-M3/52 Equivalent & Substitute Parts
Part Overview
The SMBJ7.0CA-M3/52 is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface-mount component operates in the TransZorb® series and is designed for general-purpose transient voltage suppression applications. The device features a 7V reverse standoff voltage with 12V maximum clamping voltage at peak pulse current, housed in a DO-214AA (SMB) package format supplied on Tape & Reel (TR).
The part is currently Active in product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the TVS diode category.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 7 | V |
| Voltage - Breakdown (Min) | 7.78 | V |
| Voltage - Clamping (Max) @ Ipp | 12 | V |
| Current - Peak Pulse (10/1000µs) | 50 | A |
| Power - Peak Pulse | 600 | W |
| Bidirectional Channels | 1 | — |
| Operating Temperature Range | -55 to 150 | °C (TJ) |
| Package / Case | DO-214AA, SMB | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution eligibility for the SMBJ7.0CA-M3/52 is determined by the following critical electrical and mechanical parameters:
Primary Matching Criteria:
- Voltage - Reverse Standoff (Typ): 7V
- Voltage - Clamping (Max) @ Ipp: 12V (±tolerance acceptable)
- Current - Peak Pulse (10/1000µs): 50A (±tolerance acceptable)
- Power - Peak Pulse: 600W
- Package / Case: DO-214AA, SMB
- Mounting Type: Surface Mount
- Bidirectional Channels: 1
Secondary Compatibility Factors:
- Operating Temperature Range: -55°C to 150°C minimum
- RoHS3 Compliance
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
All identified substitute parts maintain electrical equivalence within standard manufacturing tolerances and are mechanically compatible with the original part's footprint and mounting requirements.
Parameter Comparison
| Part Number | Manufacturer | Voltage Standoff (V) | Voltage Clamp (V) | Peak Pulse Current (A) | Power Peak Pulse (W) | Temp Range (°C) | Package | Packaging Type | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| SMBJ7.0CA-M3/52 | Vishay General Semiconductor | 7 | 12 | 50 | 600 | -55 to 150 | DO-214AA, SMB | Tape & Reel (TR) | ROHS3 |
| SMBJ7.0CD-M3/H | Vishay General Semiconductor | 7 | 11.8 | 50.8 | 600 | -55 to 150 | DO-214AA, SMB | Tape & Reel (TR) | ROHS3 |
| SMBJ7.0CA-E3/52 | Vishay General Semiconductor | 7 | 12 | 50 | 600 | -55 to 150 | DO-214AA, SMB | Cut Tape (CT) | ROHS3 |
| SMBJ7.0CA | MDD | 7 | 12 | 50 | 600 | -50 to 150 | DO-214AA, SMB | Tape & Reel (TR) | ROHS3 |
| SMBJ7.0CA-13-F | Diodes Incorporated | 7 | 12 | 50 | 600 | -55 to 150 | DO-214AA, SMB | Tape & Reel (TR) | ROHS3 |
| SMBJ7.0CA-TP | Micro Commercial Co | 7 | 12 | 50 | 600 | -55 to 175 | DO-214AA, SMB | Tape & Reel (TR) | ROHS3 |
| SMBJ7V0CA | Taiwan Semiconductor Corporation | 7 | 12 | 50 | 600 | -55 to 150 | DO-214AA, SMB | Tape & Reel (TR) | ROHS3 |
Engineering Selection Recommendations
Primary Recommendation: SMBJ7.0CA-E3/52 (Vishay General Semiconductor) is the manufacturer-recommended equivalent. This part maintains identical electrical specifications to the original SMBJ7.0CA-M3/52, with the primary difference being Cut Tape (CT) packaging instead of Tape & Reel (TR). Both are ROHS3 compliant with unlimited moisture sensitivity rating.
Direct Electrical Equivalents (Identical Specifications):
- SMBJ7.0CA-13-F (Diodes Incorporated)
- SMBJ7.0CA-TP (Micro Commercial Co)
- SMBJ7V0CA (Taiwan Semiconductor Corporation)
- SMBJ7.0CA (MDD)
All listed parts share the same 7V standoff voltage, 12V clamping voltage, 50A peak pulse current, and 600W peak pulse power rating. All are ROHS3 compliant and operate within the required temperature range.
Near-Equivalent Alternative: SMBJ7.0CD-M3/H (Vishay General Semiconductor) provides a slight variation with 11.8V clamping voltage and 50.8A peak pulse current. This part remains within acceptable tolerance ranges for general-purpose TVS applications and maintains all compliance certifications.
Temperature Range Consideration: SMBJ7.0CA-TP extends the upper operating temperature to 175°C (versus 150°C standard), providing enhanced thermal performance for high-temperature environments while maintaining all other electrical parameters.
Packaging Consideration: SMBJ7.0CA (MDD) operates at a minimum temperature of -50°C (versus -55°C standard). This represents a narrower lower temperature range and should be evaluated against application requirements.
Frequently Asked Questions (FAQ)
Q: Can SMBJ7.0CD-M3/H be used as a direct replacement for SMBJ7.0CA-M3/52?
A: SMBJ7.0CD-M3/H is functionally compatible with minor electrical variations. The clamping voltage is 11.8V (versus 12V) and peak pulse current is 50.8A (versus 50A). These differences fall within standard manufacturing tolerances for TVS diodes and do not prevent substitution in general-purpose applications. Both parts share identical standoff voltage (7V), power rating (600W), package format (DO-214AA, SMB), and compliance certifications.
Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?
A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) packaging provides components on tape segments cut to specific lengths, typically for lower-volume orders or manual assembly. Electrically and mechanically, both packaging formats contain identical components. SMBJ7.0CA-E3/52 is the Cut Tape variant of the original part.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All identified substitute parts carry ROHS3 compliance certification and unlimited moisture sensitivity rating (MSL 1), matching the original SMBJ7.0CA-M3/52 specifications.
Q: Which substitute part offers the widest operating temperature range?
A: SMBJ7.0CA-TP (Micro Commercial Co) extends the upper operating temperature to 175°C, compared to the standard 150°C maximum. This part maintains all other electrical specifications identical to the original component.
Q: Can I substitute SMBJ7.0CA (MDD) if my application requires -55°C operation?
A: SMBJ7.0CA (MDD) specifies a minimum operating temperature of -50°C, which does not meet the -55°C requirement of the original part. For applications requiring -55°C operation, select from: SMBJ7.0CD-M3/H, SMBJ7.0CA-E3/52, SMBJ7.0CA-13-F, SMBJ7.0CA-TP, or SMBJ7V0CA.
Q: Are there inventory differences between substitute parts?
A: Yes. Inventory levels vary by part number and supplier. SMBJ7V0CA (Taiwan Semiconductor Corporation) shows the highest inventory at 27,018 pieces. SMBJ7.0CA-13-F (Diodes Incorporated) shows 9,200 pieces. SMBJ7.0CA-E3/52 (Vishay) shows 1,500 pieces. Inventory availability should be confirmed with your component supplier for procurement planning.
Q: What determines whether a part can substitute for SMBJ7.0CA-M3/52?
A: Substitution is determined by matching the following parameters: 7V reverse standoff voltage, 12V maximum clamping voltage (±tolerance), 50A peak pulse current (±tolerance), 600W peak pulse power, DO-214AA/SMB package format, surface-mount configuration, single bidirectional channel, and ROHS3 compliance. Operating temperature range must meet or exceed -55°C to 150°C.
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