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JS1-9V
Panasonic Electric Works
RELAY GEN PURPOSE SPDT 10A 9V
2311 Pcs New Original In Stock
General Purpose Relay SPDT (1 Form C) 9VDC Coil Through Hole
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Minimum 1
Minimum 1
5.0 / 5.0
- (40 Ratings)
JS1-9V
Product Overview
8009842
DiGi Electronics Part Number
JS1-9V-DGManufacturer
Panasonic Electric Works
JS1-9V
Description
RELAY GEN PURPOSE SPDT 10A 9VInventory
2311 Pcs New Original In Stock
General Purpose Relay SPDT (1 Form C) 9VDC Coil Through Hole
Quantity
Minimum 1
Minimum 1
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JS1-9V Technical Specifications
Category
Power Relays, Over 2 Amps
Packaging
-
Series
JS
Product Status
Obsolete
Mounting Type
Through Hole
Coil Voltage
9VDC
Contact Form
SPDT (1 Form C)
Contact Rating (Current)
10 A
Switching Voltage
250VAC, 100VDC - Max
Coil Current
40 mA
Coil Type
Non Latching
Features
-
Termination Style
PC Pin
Seal Rating
Sealed - Fully
Coil Insulation
-
Must Operate Voltage
6.3 VDC
Must Release Voltage
0.9 VDC
Operate Time
10 ms
Release Time
10 ms
Operating Temperature
-40°C ~ 70°C
Contact Material
Silver Alloy
Relay Type
General Purpose
Coil Resistance
225 Ohms
Base Product Number
-
Datasheet & Documents
Datasheets
Download JS1-9V Product Specification (PDF)
HTML Datasheet
JS1-9V-DG
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8536.41.0020
Additional Information
Other Names
255-1708-NDR
Q3587709
255-1708
Standard Package
100
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
Packaging was comprehensive; it arrived in perfect condition and works great.
December 02, 2025
The team’s friendly attitude made resolving issues a pleasant experience.
December 02, 2025
Affordable prices with a strong eco-friendly stance—highly commendable.
December 02, 2025
Their team’s professionalism after the sale makes working with them a pleasure.
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Frequently Asked Questions (FAQ)
Can the JS1-9V be used in high-vibration industrial environments, and how does its fully sealed construction impact long-term reliability in such conditions?
Yes, the JS1-9V's fully sealed construction helps protect internal contacts from dust, moisture, and contaminants, making it suitable for harsh industrial environments with vibration. However, while the sealing enhances durability, mechanical shock resistance should be verified in high-vibration applications—consider adding damping mounts or conformal coating on the PCB. Monitor for contact resistance changes over time due to micro-arcing under load, especially near the 10A switching limit. Designers should also confirm that the 225 Ohm coil can maintain pull-in force at the minimum operate voltage (6.3VDC) under brownout conditions common in industrial settings.
Is the JS1-9V a viable replacement for the obsolete J1071CS9VDC.36, and what are the key design-in risks when making this substitution?
The JS1-9V can serve as a functional replacement for the J1071CS9VDC.36 given similar coil voltage (9VDC), SPDT configuration, and 10A current rating. However, differences in physical footprint and pinout must be verified—JS1-9V uses a standard through-hole pin configuration, but board layout compatibility is not guaranteed. Additionally, coil inductance and operate time (10ms) may affect timing in sensitive control circuits. Always validate with actual load testing, especially for DC switching up to 100VDC where contact arcing could differ due to silver alloy contact material. Confirm that the must-release voltage (0.9VDC) won’t cause unintended drop-out in systems with slow power decay.
What are the main risks when switching inductive loads like motors or solenoids with the JS1-9V, and how can contact life be maximized?
Switching inductive loads with the JS1-9V introduces risks of contact welding and erosion due to arcing at turn-off. The relay is rated for 100VDC resistive loads, but inductive loads generate voltage spikes exceeding this. To mitigate failure, always use a flyback diode across DC coils or an RC snubber at the JS1-9V's contact terminals. Consider derating contact current by 50% (i.e., use ≤5A) for motor starting or solenoid control. Avoid using the normally open (NO) and common (COM) contacts without proper arc suppression, and monitor contact resistance during prototype testing to detect early wear.
How does the JS1-9V perform in automotive applications with fluctuating battery voltage, and is 6.3V minimum operate voltage sufficient for reliable startup?
The JS1-9V's 6.3V must-operate threshold may pose risks in automotive environments where cold cranking can drop battery voltage below 7V. At 6.3V minimum, the relay might not pull in reliably during engine start, especially with added voltage drop across long harnesses. Designers should ensure the actual coil supply reaches at least 7V under worst-case conditions. Use a local bypass capacitor near the coil pins to maintain pull-in during dips. Consider a voltage supervisor or solid-state pre-driver circuit to guarantee clean actuation. While operating temperature (-40°C to 70°C) suits automotive needs, prolonged exposure above 60°C may degrade coil insulation over time.
What are the PCB layout and thermal considerations when using multiple JS1-9V relays in close proximity on a through-hole design?
When placing multiple JS1-9V relays close together, maintain adequate spacing to prevent magnetic coupling between coils, which could cause crosstalk or unintended operation. Keep sensitive signal traces away from relay terminals and use ground planes to shield noise. Ensure PCB holes are properly sized for the pin terminations to avoid stress cracks. Thermally, each JS1-9V dissipates about 360mW (9V × 40mA), so clusters of relays can create hot spots—add thermal relief pads and consider forced airflow in enclosed systems. Verify that the board material (e.g., FR-4) can handle cumulative heat, especially near the 70°C max operating temperature, to avoid long-term degradation of solder joints or insulation.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
JS1-9V CAD Models
Panasonic Electric Works JS1-9V PCB symbols & footprints
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