My Inquiry
My Account
Skyworks Solutions Inc. SKY87604-12
- Part No.:
- SKY87604-12
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Electrical, Specialty Fuses
- Package:
- Module
- Datasheet:
-
SKY87604-12.pdf
- Description:
- OVERMOLDED 250MA FUSE FOR GAS ME
- Quantity:
- Payment:
- Shipping:
Inventory:300
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SKY87604-12 from Skyworks Solutions is a fast-acting, over-molded fuse rated at 250 mA, operating from –40 °C to +125 °C, UL 60079-11 compliant, and housed in a 3.0 mm × 3.0 mm, 4-lead MCM package. It delivers high I²t for robust inrush current handling and is designed for gas meter modules where safety-critical overcurrent protection is required.
For engineers reviewing the SKY87604-12 datasheet, SKY87604-12 pinout, SKY87604-12 application, or SKY87604-12 equivalent, key selection criteria include its certified clearance compliance, lead-free RoHS/Halogen-free construction, 250 mA trip rating, and suitability for high-reliability industrial metering environments with stringent thermal and safety requirements.
Technical Context
The SKY87604-12 implements a fast-acting fuse element fully encapsulated in non-metallic over-mold material ≥0.5 mm thick, satisfying UL 60079-11 clearance mandates. Its dual-terminal configuration (Terminals 1 and 2 repeated across four pins) enables symmetrical PCB layout and low-inductance current path routing.
Designed as a surface-mount, Pb-free MCM device, it supports both leaded and lead-free reflow/wave soldering processes and maintains stable performance across –40 °C to +125 °C ambient, making it suitable for sealed, long-life industrial enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Ampere Rating | 250 mA nominal hold current - defines maximum continuous current before thermal trip under specified conditions. |
| Operating Temperature | –40 °C to +125 °C - ensures reliable operation in outdoor gas meter housings exposed to wide ambient swings. |
| UL Compliance | UL 60079-11 certified - guarantees ≥0.5 mm non-metallic encapsulation thickness around fuse element for intrinsic safety. |
| Package Dimensions | 3.0 mm × 3.0 mm MCM - enables ultra-compact placement in space-constrained meter PCBs without compromising creepage/clearance. |
| Lead Finish | 100% lead-free, RoHS & Halogen-free - meets global environmental regulations and supports Pb-free assembly without contamination risk. |
| I²t Value | High I²t - allows tolerance of brief high-inrush currents (e.g., during solenoid or sensor power-up) without nuisance tripping. |
Pinout & Package
SKY87604-12 uses a 4-lead, 3.0 mm × 3.0 mm molded chip module (MCM) package, moisture sensitivity level 3 (MSL3), rated for 260 °C reflow per IPC/JEDEC J-STD-020C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Terminal 1 (Input/Output) | Electrically identical to Pin 4; provides redundant connection point for one side of fuse element. |
| Pin 2 | Terminal 2 (Input/Output) | Electrically identical to Pin 3; provides redundant connection point for opposite side of fuse element. |
| Pin 3 | Terminal 2 (Input/Output) | Parallel-connected to Pin 2 for enhanced current-handling and lower effective contact resistance. |
| Pin 4 | Terminal 1 (Input/Output) | Parallel-connected to Pin 1 to improve mechanical robustness and reduce trace inductance in high-di/dt applications. |
Key Features
| Feature | Design Value |
|---|---|
| Over-molded construction | ≥0.5 mm non-metallic encapsulation ensures UL 60079-11 compliance and eliminates need for external insulation barriers. |
| Dual-terminal symmetry | Pins 1+4 and Pins 2+3 are internally shorted - simplifies PCB layout and reduces parasitic inductance in safety-critical paths. |
| High I²t rating | Enables reliable operation during transient inrush events common in gas valve actuation and sensor bias circuits. |
| Extended temperature range | –40 °C to +125 °C operation supports deployment in unheated outdoor meter installations across global climates. |
Applications
| Gas Meter Protection | Industrial Flow Sensor Power |
|---|---|
Use Scenario: Installed in the main power rail of ultrasonic or diaphragm gas meters to protect against short-circuit faults in solenoid valves or PCB traces. IC Role / Device Role / Timing Role: Primary overcurrent protection device - fails open under fault to isolate hazardous energy and maintain intrinsic safety. Use Value: UL 60079-11 certification and over-molded design eliminate need for additional creepage spacing or potting, reducing BOM and assembly cost. | Use Scenario: Protecting 24 V DC supply lines feeding MEMS-based flow sensors in smart utility infrastructure. IC Role / Device Role / Timing Role: Fast-acting current limiter - responds within milliseconds to prevent damage to sensitive analog front-end circuitry during wiring faults. Use Value: High I²t withstand allows normal sensor startup surges while reliably interrupting sustained overloads, improving field reliability. |
| Smart Utility Module Backup | Explosion-Proof Interface Protection |
Use Scenario: Secondary protection on battery-backed real-time clock or RF transceiver rails in AMI (Advanced Metering Infrastructure) modules. IC Role / Device Role / Timing Role: Low-profile, thermally stable fuse - maintains integrity during extended battery discharge cycles and temperature cycling. Use Value: 3.0 mm × 3.0 mm MCM footprint saves board space versus traditional axial or radial fuses, enabling denser module integration. | Use Scenario: Input-side protection for isolated RS-485 or CAN interfaces in hazardous-area-rated gas monitoring nodes. IC Role / Device Role / Timing Role: Intrinsically safe current-limiting element - prevents ignition-capable energy transfer into classified zones per IECEx/ATEX requirements. Use Value: Certified over-mold clearance satisfies zone 0/1 barrier requirements without requiring external spark gaps or Zener diode networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overcurrent protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse 0ZCM250-2P | 250 mA PTC resettable fuse; polymer-based, positive temperature coefficient; higher trip resistance and slower response than SKY87604-12. | Used where auto-recovery after fault is preferred; not UL 60079-11 certified for intrinsic safety in explosive atmospheres. | Select only if automatic reset is required and intrinsic safety certification is not mandated. |
| Bourns MF-MSMF250 | 250 mA surface-mount PPTC; similar footprint but lacks UL 60079-11 clearance compliance and has lower I²t rating. | Suitable for general-purpose industrial electronics; not validated for gas metering or hazardous-area use. | Choose when cost is prioritized over certified safety compliance and high inrush tolerance. |
Compared with Littelfuse 0ZCM250-2P and Bourns MF-MSMF250, the SKY87604-12 uniquely combines UL 60079-11 certification, high I²t, and over-molded construction - making it the only option qualified for intrinsic safety in gas meter modules without supplemental barrier components.
Availability
SKY87604-12 is available at Aetrix Electronics and suitable for gas meter modules, industrial flow sensor power rails, and explosion-proof interface protection requiring stable component supply, long-term lifecycle support, and certified intrinsic safety compliance.
Supply support for SKY87604-12 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Skyworks Solutions is a global provider of analog and mixed-signal semiconductors, specializing in RF, timing, and protection solutions for wireless, automotive, and industrial markets.
The SKY87604 family was developed specifically for certified overcurrent protection in hazardous-area metering systems, emphasizing UL 60079-11 compliance, thermal stability, and compact MCM packaging.
FAQ
What is the trip current and hold current specification for SKY87604-12?
The SKY87604-12 is rated for a nominal hold current of 250 mA - meaning it carries this current continuously without interruption under standard test conditions. Its trip current is not a fixed value but depends on time and overcurrent magnitude; it is a fast-acting fuse with high I²t, allowing brief inrush surges while opening rapidly under sustained overload. Full trip characteristics are defined in the official SKY87604-12 datasheet curves.
Does SKY87604-12 meet UL 60079-11 for use in hazardous locations?
Yes, the SKY87604-12 satisfies UL 60079-11 requirements by incorporating ≥0.5 mm of non-metallic over-molding around the fuse element, ensuring minimum clearance from external conductive materials. This certification makes SKY87604-12 suitable for intrinsic safety barriers in gas meter modules deployed in Class I, Division 1 or Zone 0/1 environments.
What is the package type and soldering compatibility of SKY87604-12?
The SKY87604-12 uses a 3.0 mm × 3.0 mm, 4-lead molded chip module (MCM) package, rated MSL3 and compatible with standard lead-free reflow profiles up to 260 °C per IPC/JEDEC J-STD-020C. It is also suitable for wave soldering and supports both leaded and lead-free assembly processes without degradation.
How does the pin configuration of SKY87604-12 simplify PCB layout?
The SKY87604-12 features a symmetrical 4-pin layout where Pins 1 and 4 are electrically connected to Terminal 1, and Pins 2 and 3 to Terminal 2. This dual-terminal redundancy lowers effective contact resistance, reduces trace inductance, and allows flexible routing - especially valuable in high-di/dt protection paths where loop area minimization is critical for electromagnetic compatibility.
Is SKY87604-12 RoHS and halogen-free compliant?
Yes, SKY87604-12 is 100% lead-free, RoHS compliant, and halogen-free per Skyworks Green™ standards (document SQ04–0074). It contains no brominated flame retardants, chlorine, fluorine, iodine, or bromine above threshold limits, meeting global environmental directives for industrial and utility-grade electronics.
SKY87604-12 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package / Case:
- Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Mounting Type:
- Surface Mount
- Fuse Type:
- -
- Current Rating (Amps):
- 250mA
- Voltage Rating - AC:
- 32 VAC
- Voltage Rating - DC:
- 63 VDC
- Response Time:
- Fast Blow
- Applications:
- Gas Meter Modules
- Features:
- -
- Class:
- -
- Approval Agency:
- UL
- Operating Temperature:
- -40°C ~ 125°C
- Breaking Capacity @ Rated Voltage:
- -
- Size / Dimension:
- 0.118" L x 0.118" W x 0.073" H (3.00mm x 3.00mm x 1.85mm)
- Grade:
- -
- Qualification:
- -
SKY87604-12 FAQ
1.How can I place an order for SKY87604-12 through Aetrix?
Please submit a Request for Quotation (RFQ) for SKY87604-12 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SKY87604-12 reliable?
The price and inventory of SKY87604-12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SKY87604-12 is usually 5 days.
3.What payment methods are accepted for SKY87604-12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SKY87604-12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SKY87604-12?
SKY87604-12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SKY87604-12 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SKY87604-12?
For technical support, including SKY87604-12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SKY87604-12 requirements.
6.How does Aetrix verify that SKY87604-12 is sourced from the original manufacturer or authorized distributors?
All SKY87604-12 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SKY87604-12 meets industry standards.
7.What is the process for return or replacement of SKY87604-12?
All SKY87604-12 units undergo pre-shipment inspection (PSI). If there is an issue with SKY87604-12, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SKY87604-12 part is unused and in its original packaging.
Return procedure for SKY87604-12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SKY87604-12 Tags
-
04611.25ER
Littelfuse Inc.
-
0461.500ER
Littelfuse Inc.
-
0461002.ER
Littelfuse Inc.
-
0308.750UR
Littelfuse Inc.
-
0159002.MR
Littelfuse Inc.
-
ITV4030L0812NR
Littelfuse Inc.
-
BK/GMT-7-1/2A
Eaton - Bussmann Electrical Division
-
0242.100UAT1
Littelfuse Inc.
-
BK/GMT-15A
Eaton - Bussmann Electrical Division
-
0242.050UAT1
Littelfuse Inc.
-
0242.200UAT1
Littelfuse Inc.
-
0242.100UR
Littelfuse Inc.
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
