SMF31K2JT TE Connectivity Resistor (Resistor Moulded) In Stock

Name: SMF31K2JT
Brand: TE Connectivity
SKU: SMF31K2JT
Availability: InStock

TE Connectivity SMF31K2JT is a flame-proof surface-mount moulded resistor with 31.2 kΩ resistance in a rectangular package measuring 10.5 mm x 5 mm, RoHS compliant and suitable for high-reliability industrial and safety-critical PCB applications. Available with worldwide shipping.

ACTIVEResistorVerified Jun 2026

Package / Visual Reference

SMF31K2JTResistor Moulded

Quick Facts

Manufacturer: TE Connectivity
Package: Resistor Moulded
Pin Count: 2
Lifecycle: ACTIVE
Datasheet: SMF31K2JT Datasheet PDF
Category: Resistor
Price: From $0.1658(MOQ 1)
Temp Range: -55.0°C to 275.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of SMF31K2JT?

Flame-proof construction meets IEC 60115 safety requirements, preventing ignition propagation in fire-hazard environments such as industrial control and power supply circuits
Surface-mount rectangular package (10.5 mm x 5 mm x 5 mm) with J-tolerance (±5%) enables standard SMT reflow assembly for automated high-volume production
REACH and RoHS compliant materials ensure regulatory compliance for export to EU and global markets with no restricted substances

What is SMF31K2JT used for?

The SMF31K2JT is used in industrial power supplies, motor control circuits, and safety-rated equipment where flame-proof resistors are required to prevent fire propagation in the event of component overstress. Its surface-mount format and robust moulded construction make it suitable for high-voltage snubber networks, voltage divider circuits in 24 V and 48 V industrial control panels, and protective discharge paths in energy storage systems.

What are the specifications of SMF31K2JT?

Pbfree Code	Yes
Reach Compliance Code	Compliant
Factory Lead Time	19 Weeks, 2 Days
YTEOL	8
Additional Feature	FLAME PROOF
Construction	Rectangular
Mounting Feature	SURFACE MOUNT
Package Height	5mm
Package Length	10.5mm
Package Shape	RECTANGULAR PACKAGE
Package Style	SMT
Package Width	5.5mm
Packing Method	TR
Physical Dimension	10.5mm x 5.5mm x 5mm
Rated Power Dissipation (P)	3W
Rated Temperature	20°C
Resistance	1200Ω
Resistor Type	FIXED RESISTOR
Size Code	4122
Surface Mount	YES
Technology	METAL FILM
Temperature Coefficient	100ppm/°C
Terminal Shape	WRAPAROUND
Tolerance	5%
Working Voltage	500V
Package	Resistor Moulded

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8533.21.00.30

Where can I find the SMF31K2JT datasheet?

SMF31K2JT Datasheet Download

Official datasheet from TE Connectivity

What are equivalent replacements for SMF31K2JT?

Compatible alternatives and drop-in replacements for SMF31K2JT:

SN74LVC1G14DBVR

suggested

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

What resistance value and tolerance does the SMF31K2JT provide, and in what circuits is this value commonly used?

The SMF31K2JT has a resistance of 31.2 kΩ with J-tolerance of ±5%. This value is commonly used in voltage divider networks, pull-up/pull-down configurations for logic interfaces operating at 12 V to 48 V, and RC timing networks in industrial timer circuits where the 31.2 kΩ value combined with a capacitor of 10 nF to 100 nF sets time constants in the microsecond to millisecond range.

Why is the flame-proof construction of the SMF31K2JT important for industrial safety applications?

In industrial and commercial equipment subject to IEC 60950 or EN 60065 safety standards, resistors in high-voltage or high-power positions must not propagate flames if they fail under fault conditions. The SMF31K2JT's flame-proof moulded construction prevents the resistor body from sustaining combustion even under overload, a requirement for CE-marked or UL-listed power supplies, motor drives, and building automation controllers operating at mains voltages up to 230 V AC.

How does the SMF31K2JT package size compare to standard 0805 or 1206 chip resistors, and what mounting considerations apply?

The SMF31K2JT measures 10.5 mm long x 5 mm wide x 5 mm tall, which is substantially larger than a standard 1206 chip resistor (3.2 mm x 1.6 mm) or even a 2512 resistor (6.3 mm x 3.2 mm). This larger body accommodates higher power dissipation and provides the mass needed for flame-proof certification. PCB designers must allocate at least 12 mm x 7 mm keep-out area and verify sufficient solder pad land pattern dimensions to ensure reliable reflow attachment.

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AvailabilityIn Stock

Reference Price (USD)

From $0.1658

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
1+	$0.8500	$0.85
100+	$0.4783	$47.83
142+	$0.2550	$36.21
250+	$0.2040	$51.00
500+	$0.1785	$89.25
1000+	$0.1658	$165.80

pcs

Unit price: $0.8500 · Total: $0.85

In Stock · 24h Response · Worldwide Shipping

Direct Contact

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”

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CTO, AutoDrive Systems, Italy