CB1AF-24V Equivalent & Substitute Parts

Part Overview

The CB1AF-24V is an automotive SPST relay manufactured by Panasonic Electric Works, designed for 24VDC coil operation with a 20A contact rating. This non-latching relay features sealed construction with flux protection and is qualified for operating temperatures from -40°C to 85°C. The part maintains active product status with RoHS compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate qualified alternatives.

Substiute Parts

CB1AF-24V

Panasonic Electric WorksIn Stock: 1161CB1AF-24V Datasheet

Current PartRFQ

1393303-9

TE Connectivity AMP ConnectorsIn Stock: 14901393303-9 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CB1AF-24V is determined by the following critical parameters:

• Contact form must be SPST-NO (1 Form A)
• Contact rating must be 20A minimum
• Coil voltage must be 24VDC
• Coil current must be within 74-76 mA range
• Coil power must be 1.8W
• Coil resistance must be 320-324 Ohms
• Switching voltage must be 28VDC nominal
• Must operate voltage must be 14VDC or higher
• Must release voltage must be 2.4VDC or lower
• Mounting type must be socketable
• RoHS compliance required
• MSL rating must be 1 (Unlimited)

The substitute part 1393303-9 meets these core electrical and mechanical criteria, enabling direct functional equivalence in 24VDC automotive relay applications.

Parameter Comparison

Engineering Selection Recommendations

Both the CB1AF-24V and 1393303-9 maintain active product status and full RoHS compliance. The CB1AF-24V is the primary specification part. The 1393303-9 qualifies as a functional equivalent based on matching contact form, current rating, coil voltage, coil power, and switching voltage parameters.

Selection between these parts should account for the following documented differences: the 1393303-9 operates across an extended temperature range (-40°C to 125°C versus -40°C to 85°C), exhibits faster switching response times (7ms operate, 2ms release versus 15ms each), and features a different quick-connect termination size (0.110" versus 0.250"). The 1393303-9 also specifies a higher must-release voltage (3.2VDC versus 2.4VDC). These differences are within acceptable substitution parameters for automotive relay applications but require verification against specific circuit design requirements.

Frequently Asked Questions (FAQ)

Q: Can the 1393303-9 directly replace the CB1AF-24V in existing designs?

A: The 1393303-9 meets the core electrical specifications for substitution: identical contact form (SPST-NO), contact rating (20A), coil voltage (24VDC), and coil power (1.8W). However, the different quick-connect termination size (0.110" versus 0.250") requires socket compatibility verification. Faster switching times and extended temperature range are additional characteristics that must be evaluated against circuit requirements.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution eligibility is determined by contact form (SPST-NO), contact current rating (20A), coil voltage (24VDC), coil power (1.8W), and mounting type (socketable). Both parts meet these criteria. Secondary parameters including switching response times, temperature range, and termination connector size must be evaluated for specific application compatibility.

Q: Are there packaging or inventory considerations?

A: Both parts are available in bulk packaging with active inventory status. The CB1AF-24V has 1150 pieces in stock; the 1393303-9 has 1435 pieces in stock. Packaging format is identical for both parts.

Q: How do the operating temperature ranges differ?

A: The CB1AF-24V operates from -40°C to 85°C. The 1393303-9 extends this range to -40°C to 125°C. Applications requiring operation above 85°C must use the 1393303-9; applications limited to 85°C or below can use either part.

Q: What is the significance of the different quick-connect termination sizes?

A: The CB1AF-24V uses 0.250" (6.3mm) quick-connect terminals; the 1393303-9 uses 0.110" (2.8mm) terminals. These are mechanically incompatible. Socket or connector compatibility must be verified before substitution.