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SMBJ6.5C-E3/52 Equivalent & Substitute Parts
Part Overview
The SMBJ6.5C-E3/52 is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This bidirectional Zener diode is designed for general-purpose transient voltage suppression in surface-mount applications using the DO-214AA (SMB) package. The part operates across a temperature range of -55°C to 150°C and is RoHS3 compliant with MSL 1 rating.
The SMBJ6.5C-E3/52 is currently listed as obsolete. Equivalent substitute parts are available from multiple manufacturers with active product status, offering identical or superior electrical performance while maintaining full compatibility with the original design specifications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 6.5 | V |
| Voltage - Breakdown (Min) | 7.22 | V |
| Voltage - Clamping (Max) @ Ipp | 12.3 | V |
| Current - Peak Pulse (10/1000µs) | 48.8 | A |
| Power - Peak Pulse | 600 | W |
| Operating Temperature Range | -55 to 150 | °C |
| Package / Case | DO-214AA, SMB | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| MSL Rating | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the SMBJ6.5C-E3/52 is determined by the following critical parameters:
- Reverse standoff voltage: 6.5V (Typ)
- Breakdown voltage minimum: 7.22V
- Clamping voltage maximum: ≤12.3V @ Ipp
- Peak pulse current: ≥48.8A
- Peak pulse power: 600W
- Package: DO-214AA / SMB surface mount
- Bidirectional channels: 1
- Type: Zener diode
- RoHS3 compliance and MSL 1 rating
All substitute parts listed maintain these core electrical and mechanical specifications. Substitute parts with lower clamping voltages (11.2V) provide improved transient suppression performance while remaining functionally compatible. All substitutes are available in active production status with established supply chains.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (V) | Voltage - Clamping (Max) @ Ipp (V) | Current - Peak Pulse (A) | Operating Temperature (°C) | Product Status | Package |
|---|---|---|---|---|---|---|---|
| SMBJ6.5C-E3/52 | Vishay | 6.5 | 12.3 | 48.8 | -55 to 150 | Obsolete | DO-214AA |
| SMBJ6.5CA-E3/52 | Vishay | 6.5 | 11.2 | 53.6 | -55 to 150 | Active | DO-214AA |
| 1SMB6.5CA TR13 PBFREE | Central Semiconductor | 6.5 | 11.2 | 53.6 | -65 to 150 | Active | SMB |
| SMBJ6.5CA | EVVO Semi | 6.5 | 11.2 | 53.6 | -65 to 150 | Active | SMB |
| SMBJ6.5CA-13-F | Diodes Incorporated | 6.5 | 11.2 | 53.6 | -55 to 150 | Active | SMB |
| SMBJ6.5CA-HR | Littelfuse | 6.5 | 11.2 | 53.6 | -65 to 150 | Active | DO-214AA |
| SMBJ6.5CA-HRA | Littelfuse | 6.5 | 11.2 | 53.6 | -65 to 150 | Active | DO-214AA |
| SMBJ6.5CA-TP | Micro Commercial Co | 6.5 | 11.2 | 53.6 | -55 to 175 | Active | DO-214AA |
| SMBJ6.5CA-TR | STMicroelectronics | 6.5 | 11.2 | 56 | -55 to 150 | Active | SMB |
| SMBJ6.5CAE3/TR13 | Microchip Technology | 6.5 | 11.2 | 53.6 | -65 to 150 | Active | SMBJ |
Engineering Selection Recommendations
All listed substitute parts are RoHS3 compliant with MSL 1 rating, matching the original part's regulatory and environmental specifications. Selection should be based on:
Direct Vishay Replacement: SMBJ6.5CA-E3/52 is the manufacturer's direct successor, maintaining Vishay's TransZorb® series designation and offering improved clamping voltage performance (11.2V vs. 12.3V) with higher peak pulse current (53.6A vs. 48.8A).
Extended Temperature Range: SMBJ6.5CA-TP (Micro Commercial Co) extends the upper operating temperature to 175°C, suitable for high-temperature applications. SMBJ6.5CA (EVVO Semi), 1SMB6.5CA TR13 PBFREE (Central Semiconductor), SMBJ6.5CA-HR/HRA (Littelfuse), and SMBJ6.5CAE3/TR13 (Microchip) all support -65°C minimum temperature for enhanced cold-temperature performance.
High-Reliability Variants: Littelfuse SMBJ6.5CA-HR and SMBJ6.5CA-HRA are designated high-reliability parts with extended temperature ranges (-65°C to 150°C), suitable for demanding industrial and automotive applications.
Broad Manufacturer Availability: Multiple manufacturers (Diodes Incorporated, STMicroelectronics, EVVO Semi, Central Semiconductor, Microchip Technology) provide functionally equivalent parts with active production status and established supply chains, ensuring long-term availability and competitive pricing.
Frequently Asked Questions (FAQ)
Q: Can SMBJ6.5CA-E3/52 directly replace SMBJ6.5C-E3/52?
A: Yes. Both parts share identical reverse standoff voltage (6.5V), breakdown voltage (7.22V), and package specifications (DO-214AA). The SMBJ6.5CA-E3/52 offers superior performance with lower clamping voltage (11.2V vs. 12.3V) and higher peak pulse current (53.6A vs. 48.8A), making it a direct functional upgrade.
Q: What is the difference between clamping voltage specifications?
A: Clamping voltage is the maximum voltage across the diode during transient suppression at peak pulse current. The original part specifies 12.3V maximum clamping, while most substitutes specify 11.2V maximum. Lower clamping voltage provides tighter voltage regulation and improved transient suppression performance.
Q: Are all substitute parts available in the same DO-214AA package?
A: Most substitutes are available in DO-214AA (SMB) package. SMBJ6.5CA (EVVO Semi) and SMBJ6.5CA-TR (STMicroelectronics) are supplied in SMB package designation. SMBJ6.5CAE3/TR13 (Microchip) uses SMBJ package designation. All three package designations refer to the same physical DO-214AA form factor and are mechanically and electrically interchangeable.
Q: Which substitute offers the widest operating temperature range?
A: SMBJ6.5CA-TP (Micro Commercial Co) supports -55°C to 175°C, providing the highest upper temperature limit. For extended low-temperature performance, SMBJ6.5CA (EVVO Semi), 1SMB6.5CA TR13 PBFREE (Central Semiconductor), SMBJ6.5CA-HR/HRA (Littelfuse), and SMBJ6.5CAE3/TR13 (Microchip) all support -65°C minimum temperature.
Q: Are all substitutes RoHS3 and MSL 1 compliant?
A: Yes. All listed substitute parts are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's regulatory and environmental specifications.
Q: What is the difference between Littelfuse SMBJ6.5CA-HR and SMBJ6.5CA-HRA?
A: Both are Littelfuse high-reliability variants with identical electrical specifications (6.5V standoff, 11.2V clamping, 53.6A peak pulse) and operating temperature range (-65°C to 150°C). The designation difference reflects internal manufacturing or qualification variations. Both are functionally equivalent for circuit design purposes.
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