B1100B-13 Schottky Diode 100V 1A SMB Equivalent & Substitute Parts

Part Overview

The B1100B-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 100V reverse voltage and 1A average rectified current in a surface mount SMB (DO-214AA) package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity. Equivalent parts maintain identical electrical specifications and package form factors, while substitute parts offer compatible performance within the same application class with potential variations in secondary parameters.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	790 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500	µA @ 100 V
Capacitance @ Vr, F	80	pF @ 4V, 1MHz
Mounting Type	Surface Mount	—
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-65 to 150	°C
Technology	Schottky	—

Substitute Part Grouping Explanation

Substitution of the B1100B-13 is determined by the following critical parameters:

Primary Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 100V
Current - Average Rectified (Io): 1A minimum
Technology: Schottky
Mounting Type: Surface Mount
Package / Case: DO-214AA (SMB) or compatible form factor

Secondary Compatibility Factors:

Voltage - Forward (Vf) (Max) @ If: ≤ 850 mV @ rated current
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: ≤ 500 µA @ 100V
Operating Temperature - Junction: Minimum -40°C, Maximum ≥ 150°C
RoHS Compliance: ROHS3 Compliant preferred for new designs
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts are grouped into three categories: parametric equivalents (identical electrical specifications, same package), direct manufacturer alternatives (compatible electrical performance, same package, different manufacturer), and manufacturer-recommended substitutes (compatible performance with potential current or package variations).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA]	Package	Product Status	RoHS Status
B1100B-13	Diodes Incorporated	100	1	790 @ 1A	500 @ 100V	DO-214AA, SMB	Obsolete	Non-compliant
B1100B-13-F	Diodes Incorporated	100	1	790 @ 1A	500 @ 100V	DO-214AA, SMB	Active	ROHS3 Compliant
B1100BQ-13-F	Diodes Incorporated	100	1	790 @ 1A	500 @ 100V	DO-214AA, SMB	Active	ROHS3 Compliant
CMSH1-100 BK PBFREE	Central Semiconductor Corp	100	1	850 @ 1A	500 @ 100V	DO-214AA, SMB	Active	ROHS3 Compliant
CMSH1-100 TR13 PBFREE	Central Semiconductor Corp	100	1	850 @ 1A	500 @ 100V	DO-214AC, SMA	Active	ROHS3 Compliant
CDBB1100-G	Comchip Technology	100	1	850 @ 1A	500 @ 100V	DO-214AA, SMB	Active	ROHS3 Compliant
SK310B-LTP	Micro Commercial Co	100	3	850 @ 3A	500 @ 100V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS1H100U	STMicroelectronics	100	1	770 @ 1A	4 @ 100V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS1H100UY	STMicroelectronics	100	1	770 @ 1A	4 @ 100V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS2H100U	STMicroelectronics	100	2	790 @ 2A	1 @ 100V	DO-214AA, SMB	Active	ROHS3 Compliant
STPS2H100UY	STMicroelectronics	100	2	790 @ 2A	1 @ 100V	DO-214AA, SMB	Active	ROHS3 Compliant

Engineering Selection Recommendations

Parametric Equivalents (Direct Replacement):

B1100B-13-F and B1100BQ-13-F are parametric equivalents of the obsolete B1100B-13, maintaining identical electrical specifications (100V, 1A, 790 mV forward voltage). Both are manufactured by Diodes Incorporated and packaged in DO-214AA SMB form factor. B1100B-13-F is the standard production equivalent with ROHS3 compliance and unlimited moisture sensitivity. B1100BQ-13-F includes automotive-grade qualification (AEC-Q101) for applications requiring automotive reliability standards. Both parts are active and suitable for direct substitution in new designs.

Direct Manufacturer Alternatives (Same Package, Compatible Performance):

CMSH1-100 BK PBFREE (Central Semiconductor Corp, Bulk packaging) and CMSH1-100 TR13 PBFREE (Central Semiconductor Corp, Tape & Reel packaging) provide compatible 100V/1A Schottky performance. Forward voltage is specified at 850 mV maximum, which is within acceptable tolerance for most applications. CMSH1-100 BK PBFREE maintains SMB package compatibility. CMSH1-100 TR13 PBFREE uses SMA package (DO-214AC), which is physically smaller and requires PCB layout adjustment. Both are ROHS3 compliant and active.

CDBB1100-G (Comchip Technology) is a manufacturer-recommended substitute offering 100V/1A Schottky performance in DO-214AA SMB package with 850 mV forward voltage specification. ROHS3 compliant and active status support new design integration.

Higher Current Capability Substitute:

SK310B-LTP (Micro Commercial Co) provides 100V reverse voltage with 3A average rectified current in DO-214AA SMB package. This part is suitable for applications where the original 1A specification is insufficient or where design margin is required. Forward voltage is specified at 850 mV @ 3A. ROHS3 compliant and active.

STMicroelectronics Alternatives:

STPS1H100U and STPS1H100UY maintain 100V/1A specifications with improved forward voltage (770 mV @ 1A) and significantly lower reverse leakage (4 µA @ 100V versus 500 µA). Both are packaged in DO-214AA SMB. STPS1H100UY includes automotive-grade qualification. These parts offer superior leakage characteristics for low-power applications.

STPS2H100U and STPS2H100UY provide 100V/2A capability with 790 mV forward voltage and 1 µA reverse leakage. STPS2H100UY includes automotive-grade qualification. Both are suitable for applications requiring higher current capacity or improved leakage performance.

All recommended substitutes are ROHS3 compliant, active products with unlimited moisture sensitivity (MSL 1), supporting compliance requirements for new designs.

Frequently Asked Questions (FAQ)

Q: Can B1100B-13-F be used as a direct replacement for the obsolete B1100B-13?

A: Yes. B1100B-13-F is a parametric equivalent manufactured by Diodes Incorporated with identical electrical specifications (100V, 1A, 790 mV forward voltage) and DO-214AA SMB package. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant). B1100B-13-F is the recommended direct replacement for new designs and production continuity.

Q: What is the difference between B1100B-13-F and B1100BQ-13-F?

A: Both parts are parametric equivalents with identical electrical specifications and SMB packaging. B1100BQ-13-F includes automotive-grade qualification (AEC-Q101) and is designated for automotive applications requiring enhanced reliability testing and traceability. B1100B-13-F is the standard industrial-grade equivalent. Selection depends on application requirements.

Q: Can CMSH1-100 TR13 PBFREE be used instead of CMSH1-100 BK PBFREE?

A: Both parts are electrically equivalent (100V, 1A, 850 mV forward voltage) and ROHS3 compliant. The primary difference is package form factor: CMSH1-100 BK PBFREE uses DO-214AA SMB (standard size), while CMSH1-100 TR13 PBFREE uses DO-214AC SMA (smaller footprint). SMA package substitution requires PCB layout modification and is not a direct mechanical replacement.

Q: Why do some substitutes have higher forward voltage (850 mV) compared to the original B1100B-13 (790 mV)?

A: Forward voltage variation within the 100V/1A Schottky diode class is a normal manufacturing characteristic. The 850 mV specification from Central Semiconductor Corp and Comchip Technology remains within acceptable operating range for most rectification applications. For applications with strict forward voltage requirements, STPS1H100U (770 mV) or STPS2H100U (790 mV) from STMicroelectronics provide tighter specifications.

Q: What is the advantage of STPS1H100U over B1100B-13-F?

A: STPS1H100U offers improved reverse leakage performance (4 µA @ 100V versus 500 µA), lower forward voltage (770 mV @ 1A versus 790 mV), and higher maximum junction temperature (175°C versus 150°C). These characteristics make STPS1H100U suitable for low-power, low-leakage applications. Both maintain 100V/1A ratings and DO-214AA SMB packaging.

Q: Can SK310B-LTP be used in place of B1100B-13?

A: SK310B-LTP is electrically compatible with 100V reverse voltage and DO-214AA SMB packaging. However, it is rated for 3A average rectified current versus the original 1A specification. SK310B-LTP is suitable for applications where higher current capacity is required or where design margin is beneficial. It is not a direct replacement for 1A-limited circuits but is a valid upgrade path.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts are ROHS3 compliant. The original B1100B-13 is RoHS non-compliant. Substitution with any recommended part ensures compliance with RoHS3 requirements for new designs and production.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 (Unlimited) indicates that the component has no moisture sensitivity restrictions. These parts do not require special moisture-controlled storage or handling procedures and can be stored under standard industrial conditions without desiccant packaging requirements.

Q: Which substitute offers the lowest reverse leakage current?

A: STPS1H100U and STPS1H100UY offer the lowest reverse leakage at 4 µA @ 100V, compared to 500 µA for the original B1100B-13 and most other substitutes. STPS2H100U and STPS2H100UY provide intermediate leakage at 1 µA @ 100V. Lower leakage is beneficial for low-power and precision rectification applications.

Q: Is automotive qualification required for my application?

A: Automotive qualification (AEC-Q101) is required only for components used in automotive systems subject to automotive reliability and traceability standards. B1100BQ-13-F, STPS1H100UY, and STPS2H100UY include automotive qualification. Standard industrial applications can use non-automotive equivalents such as B1100B-13-F or STPS1H100U.

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