SMBJ5.0C Equivalent & Substitute Parts

Part Overview

The SMBJ5.0C is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., rated for 5V reverse standoff voltage with a 9.66V maximum clamping voltage at peak pulse current. This component is classified as Obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The SMBJ5.0C operates across a temperature range of -65°C to 150°C and is housed in a DO-214AA (SMB) surface mount package, suitable for general-purpose transient voltage suppression applications.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	5	V
Voltage - Breakdown (Min)	6.03	V
Voltage - Clamping (Max) @ Ipp	9.66	V
Current - Peak Pulse (10/1000µs)	65.3	A
Power - Peak Pulse	600	W
Operating Temperature Range	-65°C to 150°C	TJ
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Type	Zener	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ5.0C are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Reverse Standoff: 5V (nominal)
Voltage - Breakdown (Min): 6.03V to 6.4V range
Voltage - Clamping (Max) @ Ipp: 9.2V to 9.66V range
Current - Peak Pulse (10/1000µs): 65.2A to 68A range
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB (surface mount)
Mounting Type: Surface Mount
Type: Zener (bidirectional, single channel)

All identified substitute parts maintain compatibility within these electrical specifications and the same physical package footprint. Variations in clamping voltage (9.2V vs. 9.66V) and peak pulse current (65.2A to 68A) remain within acceptable tolerance ranges for general-purpose transient suppression applications.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Breakdown Min (V)	Voltage - Clamping Max @ Ipp (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Operating Temp (°C)	Package	Product Status
SMBJ5.0C	Littelfuse Inc.	5	6.03	9.66	65.3	600	-65 to 150	DO-214AA, SMB	Obsolete
SMBJ5.0CA	MDD	5	6.4	9.2	65.3	600	-65 to 150	DO-214AA, SMB	Active
SMBJ5.0CA-13-F	Diodes Incorporated	5	6.4	9.2	65.2	600	-55 to 150	DO-214AA, SMB	Active
SMBJ5.0CA-E3/5B	Vishay General Semiconductor - Diodes Division	5	6.4	9.2	65.2	600	-55 to 150	DO-214AA, SMB	Active
SMBJ5.0CA-TP	Micro Commercial Co	5	6.4	9.2	65.2	600	-55 to 175	DO-214AA, SMB	Active
SMBJ5.0CA-TR	STMicroelectronics	5	6.4	9.2	68	600	-55 to 150	DO-214AA, SMB	Active
SMBJ5V0CA	Taiwan Semiconductor Corporation	5	6.4	9.2	65.2	600	-55 to 150	DO-214AA, SMB	Active
TV06B5V0JB-G	Comchip Technology	5	6.4	9.2	65.22	600	Not specified	DO-214AA, SMB	Active

Engineering Selection Recommendations

All substitute parts listed are Active status components, eliminating obsolescence risk associated with the original SMBJ5.0C. Selection should prioritize parts with the following attributes:

Compliance & Certification: All substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), matching the original part's environmental qualifications.

Temperature Range Consideration: The original SMBJ5.0C operates from -65°C to 150°C. Most substitute parts operate from -55°C to 150°C, representing a narrower lower temperature bound. The SMBJ5.0CA-TP extends to -55°C to 175°C, providing enhanced high-temperature performance if required by application constraints.

Electrical Performance: Substitute parts exhibit clamping voltages of 9.2V (compared to 9.66V in the original) and peak pulse currents ranging from 65.2A to 68A (compared to 65.3A). These variations remain within acceptable tolerance for general-purpose transient suppression and do not compromise circuit protection functionality.

Packaging & Availability: All substitute parts are supplied in DO-214AA (SMB) surface mount packages with identical footprints, enabling direct PCB layout compatibility. Multiple manufacturers provide active inventory, ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can SMBJ5.0CA directly replace SMBJ5.0C in existing designs?

A: Yes. Both parts share identical reverse standoff voltage (5V), peak pulse power (600W), and surface mount package (DO-214AA, SMB). The clamping voltage difference (9.2V vs. 9.66V) and peak pulse current variation (65.3A vs. 65.2A) fall within acceptable operating margins for general-purpose transient suppression circuits.

Q: What is the significance of the clamping voltage difference between SMBJ5.0C (9.66V) and substitute parts (9.2V)?

A: The clamping voltage represents the maximum voltage across the TVS diode during peak pulse current. The 0.46V difference is within typical component tolerance and does not materially affect circuit protection performance in general-purpose applications. Circuit designers should verify clamping voltage specifications against specific application voltage thresholds.

Q: Are there temperature range limitations when substituting SMBJ5.0C?

A: The original SMBJ5.0C operates from -65°C to 150°C. Most substitute parts operate from -55°C to 150°C, representing a 10°C reduction in minimum operating temperature. Applications requiring operation below -55°C should retain the original part or specify alternative components. The SMBJ5.0CA-TP extends to -55°C to 175°C for enhanced high-temperature applications.

Q: Do all substitute parts use identical DO-214AA (SMB) packaging?

A: Yes. All substitute parts are housed in DO-214AA (SMB) surface mount packages with identical footprints and pin configurations, enabling direct PCB layout compatibility without redesign.

Q: What is the difference between SMBJ5.0CA variants (SMBJ5.0CA-13-F, SMBJ5.0CA-E3/5B, SMBJ5.0CA-TP, SMBJ5.0CA-TR)?

A: These designations represent manufacturer-specific packaging and tape configurations (Tape & Reel, Cut Tape, Digi-Reel). Electrical specifications remain consistent across variants. Selection depends on procurement and assembly requirements rather than electrical performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), matching environmental and regulatory requirements of the original SMBJ5.0C.

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