B1100LB-13 Schottky Diode 100V 2A SMB Equivalent & Substitute Parts

Part Overview

The B1100LB-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 100V DC reverse voltage and 2A average rectified current in a surface mount SMB (DO-214AA) package. This component is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. The part operates across a junction temperature range of -65°C to 175°C and exhibits fast recovery characteristics suitable for high-frequency switching applications.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	750 mV @ 1 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	500	µA @ 100 V
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65 to 175	°C
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution of the B1100LB-13 is determined by the following critical parameters:

Mandatory Matching Parameters:

Technology: Schottky rectifier diode
Voltage - DC Reverse (Vr) (Max): 100V minimum
Current - Average Rectified (Io): 2A minimum
Package / Case: DO-214AA (SMB) surface mount
Mounting Type: Surface Mount
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Acceptable Variation Parameters:

Voltage - Forward (Vf): Tolerance within typical Schottky forward voltage range (750–850 mV @ rated current)
Current - Reverse Leakage @ Vr: Variation acceptable within Schottky diode specifications
Operating Temperature - Junction: Minimum -55°C to maximum 125°C acceptable for most applications; extended range (-65°C to 175°C) preferred
RoHS Status: Substitutes with ROHS3 compliance are preferred due to discontinued status of original part

Substitute parts are grouped into two categories: Direct Current Rating Match (2A) and Higher Current Rating (3A–5A) for applications requiring additional current margin.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA]	Package	Temp Range [°C]	RoHS Status	Product Status
B1100LB-13	Diodes Incorporated	100	2	750 @ 1A	500 @ 100V	DO-214AA, SMB	-65 to 175	RoHS non-compliant	Discontinued
B1100LB-13-F	Diodes Incorporated	100	1	750 @ 1A	500 @ 100V	DO-214AA, SMB	-65 to 175	ROHS3 Compliant	Active
CDBB2100-G	Comchip Technology	100	2	850 @ 2A	500 @ 100V	DO-214AA, SMB	-55 to 125	ROHS3 Compliant	Active
S210	Fairchild Semiconductor	100	2	850 @ 2A	400 @ 100V	DO-214AA, SMB	-65 to 125	Not specified	Active
SK310B-LTP	Micro Commercial Co	100	3	850 @ 3A	500 @ 100V	DO-214AA, SMB	-55 to 150	ROHS3 Compliant	Active
SK510B	Taiwan Semiconductor Corporation	100	5	850 @ 5A	100 @ 100V	DO-214AA, SMB	-55 to 150	ROHS3 Compliant	Active
SS2H10-E3/52T	Vishay General Semiconductor - Diodes Division	100	2	790 @ 2A	10 @ 100V	DO-214AA, SMB	-65 to 175	ROHS3 Compliant	Active
SS2H10-E3/5BT	Vishay General Semiconductor - Diodes Division	100	2	790 @ 2A	10 @ 100V	DO-214AA, SMB	-65 to 175	ROHS3 Compliant	Active
STPS1H100U	STMicroelectronics	100	1	770 @ 1A	4 @ 100V	DO-214AA, SMB	—	ROHS3 Compliant	Active
STPS1H100UY	STMicroelectronics	100	1	770 @ 1A	4 @ 100V	DO-214AA, SMB	-40 to 175	ROHS3 Compliant	Active
STPS2H100U	STMicroelectronics	100	2	790 @ 2A	1 @ 100V	DO-214AA, SMB	—	ROHS3 Compliant	Active

Engineering Selection Recommendations

Primary Substitute (Direct Replacement):

The STPS2H100U (STMicroelectronics) is the primary equivalent for B1100LB-13. This part matches the 100V reverse voltage and 2A current rating, operates in the identical DO-214AA SMB package, and maintains fast recovery characteristics. The STPS2H100U is ROHS3 compliant and currently active in production with high inventory availability (105,200 pcs). Forward voltage specification (790 mV @ 2A) is within acceptable Schottky diode tolerance relative to the original part (750 mV @ 1A).

Secondary Substitutes (2A Current Rating):

SS2H10-E3/52T and SS2H10-E3/5BT (Vishay General Semiconductor - Diodes Division) provide equivalent 2A current handling with superior reverse leakage characteristics (10 µA @ 100V versus 500 µA @ 100V on original). Both variants maintain the extended operating temperature range (-65°C to 175°C) matching the B1100LB-13 specification. Forward voltage is 790 mV @ 2A. These parts are ROHS3 compliant and available in Cut Tape packaging.

CDBB2100-G (Comchip Technology) and S210 (Fairchild Semiconductor) are functionally equivalent 2A alternatives with 100V rating and DO-214AA packaging. Both are active products with ROHS3 compliance (CDBB2100-G) or active status (S210). Operating temperature ranges are reduced to -55°C to 125°C (CDBB2100-G) and -65°C to 125°C (S210) relative to the original part.

Higher Current Alternatives (Current Margin Applications):

SK310B-LTP (Micro Commercial Co) provides 3A current rating in identical packaging with 100V reverse voltage. This part is suitable for applications requiring additional current margin while maintaining the same voltage class and package footprint. ROHS3 compliant and active.

SK510B (Taiwan Semiconductor Corporation) provides 5A current rating for applications requiring substantial current margin. This part exhibits the lowest reverse leakage (100 µA @ 100V) among all substitutes and is ROHS3 compliant.

Reduced Current Alternative:

B1100LB-13-F (Diodes Incorporated) is a 1A variant from the same manufacturer base product line (B1100). This part is suitable only for applications where 1A current is sufficient. It is ROHS3 compliant and active in production.

Frequently Asked Questions (FAQ)

Q: Can STPS2H100U directly replace B1100LB-13 without circuit modification?

A: Yes. STPS2H100U matches the critical electrical parameters: 100V reverse voltage, 2A average rectified current, fast recovery characteristics, and DO-214AA SMB package. Forward voltage difference (790 mV versus 750 mV @ 1A) is within typical Schottky diode tolerance and does not require circuit redesign for standard rectification applications.

Q: What is the difference between SS2H10-E3/52T and SS2H10-E3/5BT?

A: Both parts are electrically identical 100V 2A Schottky diodes with matching electrical specifications. The difference is in packaging configuration: SS2H10-E3/52T is supplied in Cut Tape (CT) format, while SS2H10-E3/5BT is also Cut Tape. Consult supplier documentation for specific reel and tape specifications if automated assembly requirements are critical.

Q: Why would I select a 3A or 5A rated diode instead of a 2A equivalent?

A: Higher current-rated diodes (SK310B-LTP at 3A, SK510B at 5A) provide design margin for applications with variable or peak current conditions. These parts maintain the same 100V voltage rating and DO-214AA package, allowing direct footprint compatibility while reducing thermal stress and extending component life in current-limited applications.

Q: Is the B1100LB-13-F (1A variant) a suitable substitute?

A: B1100LB-13-F is suitable only if the application current requirement is 1A or less. The original B1100LB-13 is rated for 2A; using a 1A part in a 2A application will cause thermal overstress and potential failure. B1100LB-13-F is not a general replacement for B1100LB-13.

Q: What is the significance of RoHS compliance in selecting a substitute?

A: The original B1100LB-13 is RoHS non-compliant. Most active substitutes (STPS2H100U, SS2H10 variants, SK310B-LTP, SK510B) are ROHS3 compliant. For new designs or applications subject to RoHS regulations, ROHS3-compliant substitutes are required. For legacy system repairs, non-compliant parts may be acceptable depending on application jurisdiction and customer requirements.

Q: How do reverse leakage specifications affect diode selection?

A: Reverse leakage current (specified at maximum reverse voltage) indicates the quality of the diode junction. Lower reverse leakage (SS2H10 at 10 µA, STPS2H100U at 1 µA) is preferable for precision analog circuits, low-power applications, and high-impedance circuits. Higher reverse leakage (B1100LB-13 at 500 µA, CDBB2100-G at 500 µA) is acceptable for standard power rectification. Select based on circuit sensitivity to leakage current.

Q: Are all substitute parts available in the same SMB package?

A: Yes. All substitute parts listed are specified for DO-214AA (SMB) surface mount package. This ensures mechanical and electrical compatibility with existing PCB layouts and assembly processes. Verify supplier device package designation matches DO-214AA or SMB before procurement.

Q: What is the operating temperature range consideration for B1100LB-13 substitutes?

A: The original B1100LB-13 operates from -65°C to 175°C. Substitutes with matching or extended ranges (SS2H10 variants: -65°C to 175°C; STPS1H100UY: -40°C to 175°C) are preferred for wide-temperature applications. Substitutes with reduced ranges (CDBB2100-G: -55°C to 125°C; SK310B-LTP: -55°C to 150°C) are acceptable for standard industrial temperature environments but not for extended low-temperature or high-temperature applications.

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