SS110 R3G Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS110 R3G is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers. Substitute parts must maintain electrical performance within the same voltage and current classifications while accommodating different package options and thermal specifications.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	800 mV @ 1 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Mounting Type	Surface Mount	—
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SS110 R3G are classified into two categories based on electrical and mechanical compatibility:

Category 1: Direct Package Equivalents (DO-214AC / SMA) These parts maintain the identical DO-214AC (SMA) package footprint and are pin-compatible with the original SS110 R3G. They satisfy the same PCB layout requirements and do not require design modifications.

Category 2: Alternative Package Options (DO-214AA / SMB, DO-221AC / SMAF) These parts provide equivalent electrical performance at 100 V / 1 A ratings but utilize different surface mount packages. Selection requires PCB layout accommodation for the alternative package geometry.

Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 100 V (exact match required)
Current - Average Rectified (Io): 1 A minimum (higher ratings acceptable for derating applications)
Technology: Schottky (fast recovery rectifier)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Parameter Comparison

Part Number	Manufacturer	Package	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Ir @ Vr [µA]	Tj (Min-Max) [°C]	Product Status
SS110 R3G	Taiwan Semiconductor	DO-214AC (SMA)	100	1	800 @ 1A	100 @ 100V	-55 to 150	Discontinued
B1100-13-F	Diodes Incorporated	DO-214AC (SMA)	100	1	790 @ 1A	500 @ 100V	-65 to 150	Active
ACDBA1100-HF	Comchip Technology	DO-214AC (SMA)	100	1	850 @ 1A	200 @ 100V	-55 to 150	Active
CDBA1100-HF	Comchip Technology	DO-214AC (SMA)	100	1	810 @ 1A	500 @ 100V	-50 to 150	Active
B1100Q-13-F	Diodes Incorporated	DO-214AC (SMA)	100	1	790 @ 1A	—	-65 to 155	Active
B1100LB-13-F	Diodes Incorporated	DO-214AA (SMB)	100	1	750 @ 1A	500 @ 100V	-65 to 175	Active
B1100B-13-F	Diodes Incorporated	DO-214AA (SMB)	100	1	790 @ 1A	500 @ 100V	-65 to 150	Active
B2100A-13-F	Diodes Incorporated	DO-214AC (SMA)	100	2	790 @ 2A	10 @ 100V	-65 to 125	Active
B2100AF-13	Diodes Incorporated	DO-221AC (SMAF)	100	2	790 @ 2A	10 @ 100V	-55 to 150	Active
CDBA2100-HF	Comchip Technology	DO-214AC (SMA)	100	2	810 @ 2A	500 @ 100V	-50 to 150	Active
CDBA3100-HF	Comchip Technology	DO-214AC (SMA)	100	3	810 @ 3A	500 @ 100V	-50 to 150	Active

Engineering Selection Recommendations

For Direct Package Replacement (DO-214AC / SMA):

Select B1100-13-F (Diodes Incorporated) for applications requiring identical PCB footprint compatibility. This part is active in production, ROHS3 compliant, and provides forward voltage performance within 10 mV of the original SS110 R3G at 1 A rating. Extended junction temperature range (-65°C to 150°C) accommodates wider thermal environments.

Select ACDBA1100-HF (Comchip Technology) for automotive-grade applications requiring AEC-Q101 qualification. This part maintains the original operating temperature range (-55°C to 150°C) and provides intermediate reverse leakage characteristics (200 µA @ 100 V).

Select CDBA1100-HF (Comchip Technology) as an alternative active source with comparable electrical performance. Forward voltage is 10 mV higher than the original specification; operating temperature minimum is -50°C.

Select B1100Q-13-F (Diodes Incorporated) for automotive applications requiring AEC-Q101 qualification with extended upper junction temperature limit (155°C).

For Alternative Package Options:

Select B1100LB-13-F (Diodes Incorporated, DO-214AA / SMB) when PCB layout accommodates the larger SMB package footprint. This part offers the lowest forward voltage (750 mV @ 1 A) and widest operating temperature range (-65°C to 175°C).

Select B1100B-13-F (Diodes Incorporated, DO-214AA / SMB) as an alternative SMB package option with performance characteristics matching B1100-13-F.

For Higher Current Derating:

Select B2100A-13-F or CDBA2100-HF (2 A rating) when circuit design permits use of higher-rated components for thermal margin or reliability enhancement. These parts maintain 100 V reverse voltage rating and are available in DO-214AC (SMA) package.

Select CDBA3100-HF (3 A rating) for maximum current derating capability in the DO-214AC (SMA) package.

All recommended substitutes are ROHS3 compliant, MSL 1 (Unlimited), and carry EAR99 ECCN classification matching the original part.

Frequently Asked Questions (FAQ)

Q: Can B1100-13-F directly replace SS110 R3G without PCB modification?

A: Yes. Both parts use the DO-214AC (SMA) package with identical pin configuration and footprint. No PCB layout changes are required. Electrical performance is equivalent within specified tolerances.

Q: What is the difference between DO-214AC (SMA) and DO-214AA (SMB) packages?

A: DO-214AC (SMA) is a smaller surface mount package; DO-214AA (SMB) is larger with greater current-carrying capability and thermal dissipation. SMB packages require different PCB pad geometry and cannot be substituted without layout redesign.

Q: Why do some substitute parts have higher reverse leakage current (Ir)?

A: Reverse leakage current varies by manufacturer process and temperature. The SS110 R3G specifies 100 µA @ 100 V; most active substitutes specify 500 µA @ 100 V. Both values are within acceptable Schottky diode specifications and do not affect circuit functionality in typical rectifier applications.

Q: Is ACDBA1100-HF suitable for automotive applications?

A: Yes. ACDBA1100-HF carries AEC-Q101 qualification and is designated as automotive-grade. It is suitable for automotive rectifier applications requiring qualified component status.

Q: Can I use B2100A-13-F (2 A rating) in place of SS110 R3G (1 A rating)?

A: Yes, for derating applications. The 2 A part operates at lower junction temperature when carrying 1 A load, extending component life. However, PCB layout must accommodate the different package if using alternative package types. Verify circuit design permits the higher current rating.

Q: What is the temperature range difference between SS110 R3G and B1100-13-F?

A: SS110 R3G operates -55°C to 150°C; B1100-13-F operates -65°C to 150°C. B1100-13-F provides extended low-temperature capability. Both maintain the same upper temperature limit.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts listed carry ROHS3 Compliant status, matching the original SS110 R3G specification.

Q: What packaging options are available for 100 V / 1 A Schottky diodes?

A: Active substitutes are available in three package types: DO-214AC (SMA), DO-214AA (SMB), and DO-221AC (SMAF). Package selection depends on PCB layout requirements and thermal dissipation needs. SMA is the smallest; SMB and SMAF provide larger thermal pads.

Q: How do forward voltage specifications affect circuit performance?

A: Forward voltage (Vf) determines voltage drop across the diode during conduction. SS110 R3G specifies 800 mV @ 1 A; substitutes range from 750 mV to 850 mV. Differences of ±50 mV are typical across manufacturers and do not significantly affect rectifier circuit operation in most applications.

Q: Can CDBA3100-HF (3 A rating) be used in a 1 A circuit?

A: Yes. The 3 A part operates well below its rated current in a 1 A application, resulting in lower junction temperature and extended reliability. Verify PCB layout accommodates the DO-214AC (SMA) package if switching from the original part.

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