SPB05B-12 Equivalent & Substitute Parts Reference

Part Overview

The MEAN WELL USA Inc. SPB05B-12 is an isolated module DC-DC converter, rated for 5W output at 12V and 417mA, with an input voltage range of 18V to 36V. The product is now designated as obsolete. The need to identify alternative models is driven by lifecycle status and ongoing supply requirements. Substitute DC-DC converters must match electrical and mechanical parameters relevant to performance, application compatibility, and mounting.

Key Parameters

Manufacturer Part Number	Manufacturer	Description	Series	Product Status	Type	Number of Outputs	Voltage - Input (Min)	Voltage - Input (Max)	Voltage - Output 1	Current - Output (Max)	Power (Watts)	Voltage - Isolation	Applications	Features	Operating Temperature	Efficiency	Mounting Type	Package / Case	Size / Dimension	Control Features	RoHS Status	Moisture Sensitivity Level (MSL)	ECCN	HTSUS
SPB05B-12	MEAN WELL USA Inc.	DC DC CONVERTER 12V 5W	SPB05 (5W)	Obsolete	Isolated Module	1	18V	36V	12V	417mA	5W	1.5 kV	ITE (Commercial)	Remote On/Off, OCP, SCP	-40°C ~ 80°C (With Derating)	85%	Through Hole	8-SIP Module, 7 Leads	0.86" L x 0.36" W x 0.44" H (21.8mm x 9.2mm x 11.1mm)	Enable, Active Low	ROHS3 Compliant	1 (Unlimited)	EAR99	8504.40.9580
ITZ0948S12	XP Power	DC DC CONVERTER 12V 9W	ITZ (9W)	Active	Isolated Module	1	18V	75V	12V	750mA	9W	1.5 kV	ITE (Commercial)	Remote On/Off, SCP	-40°C ~ 85°C (With Derating)	89%	Through Hole	8-SIP Module	0.86" L x 0.38" W x 0.44" H (21.9mm x 9.6mm x 11.2mm)	Enable, Active Low	ROHS3 Compliant	1 (Unlimited)	EAR99	8504.40.9580

Substitute Part Grouping Explanation

Substitute part selection is based on direct matching of the following parameters:

Output voltage: 12V
Input voltage range covering 18V minimum and at least 36V maximum
Output configuration: 1 output
Isolation voltage: 1.5 kV
Package style: 8-SIP Module, through-hole mounting
Application: ITE (Commercial)
Compliance: ROHS3 and MSL 1 (Unlimited)
Control features: Enable, Active Low

Electrical performance, mechanical footprint, and regulatory status determine substitution eligibility.

Parameter Comparison

Parameter	SPB05B-12	ITZ0948S12
Manufacturer	MEAN WELL USA Inc.	XP Power
Product Status	Obsolete	Active
Type	Isolated Module	Isolated Module
Number of Outputs	1	1
Voltage - Input (Min)	18V	18V
Voltage - Input (Max)	36V	75V
Voltage - Output 1	12V	12V
Current - Output (Max)	417mA	750mA
Voltage - Isolation	1.5 kV	1.5 kV
Applications	ITE (Commercial)	ITE (Commercial)
Features	Remote On/Off, OCP, SCP	Remote On/Off, SCP
Operating Temperature	-40°C ~ 80°C (With Derating)	-40°C ~ 85°C (With Derating)
Efficiency	85%	89%
Mounting Type	Through Hole	Through Hole
Package / Case	8-SIP Module, 7 Leads	8-SIP Module
Size / Dimension	0.86" L x 0.36" W x 0.44" H (21.8mm x 9.2mm x 11.1mm)	0.86" L x 0.38" W x 0.44" H (21.9mm x 9.6mm x 11.2mm)
Control Features	Enable, Active Low	Enable, Active Low
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8504.40.9580	8504.40.9580

Engineering Selection Recommendations

SPB05B-12 is obsolete. ITZ0948S12 is active, ROHS3 compliant, with MSL 1 (Unlimited) and EAR99 ECCN. Both meet supply chain and regulatory requirements for ITE (Commercial) applications and identical mounting type. Parameter alignment supports substitution.

Frequently Asked Questions (FAQ)

Q1: What are the critical compatibility parameters for substituting SPB05B-12?
A1: Output voltage, input voltage range, output current, isolation voltage, package type, mounting method, application class, features, control interface, and compliance status.

Q2: Are the control features the same between SPB05B-12 and ITZ0948S12?
A2: Both have Enable, Active Low control features.

Q3: Is the mechanical package compatible?
A3: Both use the 8-SIP module with similar dimensions and through-hole mounting.

Q4: Is there any difference in compliance status and inventory handling?
A4: Both are ROHS3 compliant and have Moisture Sensitivity Level 1 (Unlimited).

Q5: What is the thermal performance comparison?
A5: SPB05B-12 operates from -40°C to 80°C (with derating), ITZ0948S12 from -40°C to 85°C (with derating).

Q6: Can the substitute ITZ0948S12 be used in the same applications as SPB05B-12?
A6: Both are suitable for ITE (Commercial) applications with matching isolation voltage and output characteristics.

Q7: How does the output power and current differ?
A7: ITZ0948S12 provides higher maximum output power (9W) and output current (750mA) compared to SPB05B-12 (5W, 417mA).

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