S5MBHR5G Equivalent & Substitute Parts

Part Overview

The S5MBHR5G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 1000 V DC reverse voltage and 5 A average rectified current in a DO-214AA (SMB) surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

The S5MBHR5G operates across a junction temperature range of -55°C to 150°C and meets automotive qualification standards (AEC-Q101). Its standard recovery speed (>500ns) and forward voltage of 1.1 V @ 5 A establish the baseline performance characteristics for substitute evaluation.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	5	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 5 A	V
Speed	Standard Recovery >500ns	-
Current - Reverse Leakage @ Vr	10	µA @ 1000 V
Operating Temperature - Junction	-55 to 150	°C
Package / Case	DO-214AA, SMB	-
Mounting Type	Surface Mount	-
Grade	Automotive	-
Qualification	AEC-Q101	-

Substitute Part Grouping Explanation

Substitute parts for the S5MBHR5G are evaluated based on the following critical parameters:

Voltage Rating: All substitutes must maintain the 1000 V DC reverse voltage specification to ensure equivalent electrical isolation and safety margins.

Current Rating: The S5MBHR5G is rated for 5 A average rectified current. Substitutes with lower current ratings (1.5 A, 2 A, 3 A) are listed as partial substitutes where circuit design permits operation at reduced current capacity. Substitutes with equal or higher current ratings provide direct replacement capability.

Package Compatibility: The DO-214AA (SMB) surface mount package is the primary form factor. Substitutes in alternative packages (SMA, SOD-214AC) are identified separately due to different PCB footprints and assembly requirements.

Recovery Speed: The S5MBHR5G operates with standard recovery characteristics (>500ns). Substitutes with fast recovery (≤500ns) or ultrafast recovery (75 ns) are functionally compatible but exhibit different switching behavior and may alter circuit performance in high-frequency applications.

Forward Voltage: The S5MBHR5G specifies 1.1 V @ 5 A. Substitutes with forward voltages ranging from 1.1 V to 1.7 V are listed; higher forward voltages result in increased power dissipation.

Temperature Range: The S5MBHR5G operates from -55°C to 150°C. Substitutes with identical or extended temperature ranges maintain thermal compatibility.

Compliance & Qualification: The S5MBHR5G carries AEC-Q101 automotive qualification. All listed substitutes maintain ROHS3 compliance and REACH unaffected status.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	Speed	Package	Temp Range [°C]	Status
S5MBHR5G	Taiwan Semiconductor	1000	5	1.1 @ 5A	Standard >500ns	DO-214AA (SMB)	-55 to 150	Discontinued
CGRB207-G	Comchip Technology	1000	2	1.1 @ 2A	Standard >500ns	DO-214AA (SMB)	-40 to 150	Active
CFRB207-G	Comchip Technology	1000	2	1.3 @ 2A	Fast ≤500ns	DO-214AA (SMB)	-40 to 150	Active
CGRB307-G	Comchip Technology	1000	3	1.1 @ 3A	Standard >500ns	DO-214AA (SMB)	-40 to 150	Active
CURB207-G	Comchip Technology	1000	2	1.7 @ 2A	Fast ≤500ns, 75ns trr	DO-214AA (SMB)	-40 to 150	Active
ER3MB-TP	Micro Commercial Co	1000	3	1.7 @ 3A	Fast ≤500ns, 75ns trr	DO-214AA (SMB)	-55 to 150	Active
RS2M-13-F	Diodes Incorporated	1000	1.5	1.3 @ 1.5A	Fast ≤500ns, 500ns trr	DO-214AA (SMB)	-65 to 150	Active
RS2MA-13-F	Diodes Incorporated	1000	1.5	1.3 @ 1.5A	Fast ≤500ns, 500ns trr	DO-214AC (SMA)	-65 to 150	Active
S2M	MDD	1000	2	1.15 @ 2A	Standard	SOD-214AC (SMA)	-55 to 150	Active
S2M-13-F	Diodes Incorporated	1000	1.5	1.15 @ 1.5A	Standard >500ns	DO-214AA (SMB)	-65 to 150	Active
S2M-LTP	Micro Commercial Co	1000	2	1.15 @ 2A	Fast ≤500ns	DO-214AA (SMB)	-55 to 150	Active

Engineering Selection Recommendations

Direct Package Substitutes (DO-214AA SMB)

Parts maintaining the DO-214AA (SMB) package footprint are preferred for direct PCB replacement without layout modification:

CGRB307-G (Comchip Technology) provides the closest electrical match with 3 A current rating, 1000 V reverse voltage, and standard recovery speed matching the S5MBHR5G recovery characteristics. Operating temperature range extends to -40°C minimum (versus -55°C for the original part). This part is active with 38,451 units in stock.

ER3MB-TP (Micro Commercial Co) offers 3 A current rating with identical -55°C to 150°C temperature range. Fast recovery characteristics (75 ns) differ from the original standard recovery specification. This part is active with 11,827 units in stock.

S2M-LTP (Micro Commercial Co) provides 2 A current rating in DO-214AA package with -55°C to 150°C temperature range. Fast recovery speed differs from the original standard recovery. This part is active with 2,606 units in stock.

Lower Current Rating Substitutes (DO-214AA SMB)

CGRB207-G (Comchip Technology) and CFRB207-G (Comchip Technology) both provide 2 A current rating with 1000 V reverse voltage in DO-214AA package. CGRB207-G maintains standard recovery speed and 1.1 V forward voltage. CFRB207-G offers fast recovery with 1.3 V forward voltage. Both are active with high inventory availability (1,089 and 4,800 units respectively).

S2M-13-F (Diodes Incorporated) provides 1.5 A current rating with standard recovery speed and 1.15 V forward voltage in DO-214AA package. Operating temperature range extends to -65°C. This part is active with 20,300 units in stock.

RS2M-13-F (Diodes Incorporated) provides 1.5 A current rating with fast recovery speed and 1.3 V forward voltage in DO-214AA package. Operating temperature range extends to -65°C. This part is active with 20,250 units in stock.

Alternative Package Substitutes

RS2MA-13-F (Diodes Incorporated) provides 1.5 A current rating in DO-214AC (SMA) package with fast recovery characteristics. This part requires PCB footprint modification and is active with 765,400 units in stock.

S2M (MDD) provides 2 A current rating in SOD-214AC (SMA) package. This part requires PCB footprint modification and is active with 325,963 units in stock.

Compliance Status

All listed substitutes maintain ROHS3 compliance and REACH unaffected status consistent with the S5MBHR5G. The original part carries AEC-Q101 automotive qualification; substitute parts do not explicitly list this qualification in the provided data.

Frequently Asked Questions (FAQ)

Q: Can CGRB307-G directly replace S5MBHR5G in all applications?

A: CGRB307-G maintains identical voltage rating (1000 V) and package (DO-214AA SMB) with matching standard recovery speed. However, current rating is 3 A versus 5 A for the original part. Direct replacement is suitable only where circuit design operates at or below 3 A average rectified current. Operating temperature minimum is -40°C versus -55°C for the original part.

Q: What is the impact of fast recovery versus standard recovery speed?

A: The S5MBHR5G operates with standard recovery (>500ns). Substitutes with fast recovery (≤500ns) or ultrafast recovery (75 ns) exhibit reduced reverse recovery time, resulting in lower reverse recovery charge and reduced switching losses. In high-frequency switching applications, fast recovery characteristics may improve efficiency. In low-frequency or linear applications, recovery speed difference has minimal impact on circuit performance.

Q: Why are lower current rating parts listed as substitutes?

A: Parts with 2 A or 3 A ratings are listed because they maintain the 1000 V voltage specification and DO-214AA package compatibility. These substitutes are applicable where circuit design permits operation at reduced current capacity. Circuit analysis is required to confirm that peak and average rectified currents remain within the substitute part's rating.

Q: Can SMA package parts (RS2MA-13-F, S2M) replace the SMB package original?

A: SMA package parts (DO-214AC) have different PCB footprints than SMB package parts (DO-214AA). Physical replacement requires PCB layout modification. Electrical specifications remain compatible (1000 V reverse voltage, 1000 V rectifier diode function). SMA package substitution is suitable only where PCB redesign is feasible.

Q: How does forward voltage variation affect circuit performance?

A: The S5MBHR5G specifies 1.1 V forward voltage @ 5 A. Substitutes range from 1.1 V to 1.7 V. Higher forward voltage results in increased power dissipation (P = Vf × I). In high-current applications, forward voltage difference becomes significant. For example, at 2 A, a 0.6 V difference (1.1 V versus 1.7 V) results in 1.2 W additional dissipation. Thermal analysis is required where forward voltage differs substantially.

Q: What is the significance of operating temperature range differences?

A: The S5MBHR5G operates from -55°C to 150°C. Substitutes with -40°C minimum (CGRB207-G, CFRB207-G, CGRB307-G, CURB207-G) have a 15°C narrower low-temperature range. Substitutes with -65°C minimum (RS2M-13-F, RS2MA-13-F, S2M-13-F) extend the low-temperature capability. Temperature range selection depends on application environment and thermal design margins.

Q: Are all listed substitutes automotive-qualified?

A: The S5MBHR5G carries AEC-Q101 automotive qualification. The provided data does not explicitly confirm AEC-Q101 qualification for substitute parts. Applications requiring automotive qualification should verify qualification status with manufacturers before design implementation.

Q: What inventory considerations apply to substitute selection?

A: Substitute parts show varying inventory levels: CGRB307-G (38,451 units), CURB207-G (46,532 units), S2M (325,963 units), and RS2MA-13-F (765,400 units) offer high availability. Parts with lower inventory (S2M-LTP: 2,606 units, CGRB207-G: 1,089 units) may present supply constraints for high-volume production. Long-term availability should be confirmed with suppliers for production commitments.

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