How is quality control handled?

We perform 100% inspection on finished products, including visual and functional checks, guided by 97 QA/QC inspectors.

What is the center frequency of this filter?

The center frequency is 621MHz with a bandwidth of 30MHz (606-636MHz).

Where is the nearest shipping port?

The nearest port for shipping is Shanghai Port.

HDF621E-F11 4PIN Saw Filter used for Wireless Microphone 621MHz

Name: HDF621E-F11 4PIN Saw Filter used for Wireless Microphone 621MHz
Brand: Shoulder Electronics Corporation Limited
SKU: 791555482

Jiangsu, ChinaShoulder Electronics Corporation Limited

US$0.50

1,000-9,999,999 Pieces

US$0.20

10,000,000+ Pieces

Sample price:US$0.50/piece.Request sample

Product profile

Customization

Available

Type

SAW Filter

Transfer Function

Band Pass

Model NO.

HDF621E-F11

Certification

RoHS, ISO, TS16949

Part Number

HDF621E-F11

Center Frequency

621MHz

Band Width

30(606-636)

Size

F11 4PIN

Transport Package

Carton

Specification

basing on data sheet

Trademark

Origin

China

HS Code

854190000

Production Capacity

500kk/Year

Key features

OEM and ODM Services: Full customization, minor customization, and flexible customization from samples or designs available.

RoHS and ISO Certified: Meets RoHS, ISO, and TS16949 standards for quality and environmental compliance.

Low Insertion Loss: Designed for small loss with clear bandwidth division for optimal signal performance.

Competitive Pricing: Favorable price point for high-quality SAW filters with complete series options.

100% Quality Inspection: All finished products undergo visual and functional inspection by 97 dedicated QA/QC inspectors.

Established Manufacturer: Operating since 1999 with 565 employees and 3 production lines in a 38,822 sqm facility.

Global Market Reach: Serving North America, Europe, East Asia, and domestic markets for over 20 years.

High Repeat Buyer Rate: 80% to 100% repeat buyer rate indicating high customer satisfaction and product reliability.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceCooperated with Fortune 500Years of Export Experience

Shoulder Electronics Corporation Limited

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 20 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤24h

AI-Powered supplier vetting

SummarySHOULDER is an electronic-components manufacturer focused on SAW filters, duplexers, and resonators for mobile, telecommunications, automotive, navigation, and related applications. It reports ISO9001/TS16949 and ISO14001 certification, documented quality and complaint-handling procedures, finished-product inspection instructions, and substantial R&D capabilities including patents, software copyrights, recent product development, 3D design, and multiple engineering tools. It provides OEM, ODM, and flexible customization services, has inventory capability, overseas agents or branches, export experience of 20 years, and one-month lead times in both peak and off-season periods. Identified limitations include no available SDK, no overseas warehouse or showroom, and no valid manufacturing-capacity contract with affiliated subcontractors. Customer-specific cases are not sufficiently documented.

Supplier typeThe supplier is a manufacturer and processor of electronic components and assemblies, specifically SAW filters, SAW duplexers, and SAW resonators. Its stated applications span mobile phones, navigation, telecommunications equipment, automotive electronics, and home automation, indicating a specialized electronic-component manufacturing profile.

CertificationsThe company description states that SHOULDER has been certified to ISO9001/TS16949 and ISO14001 for many years. These explicitly stated certifications support a positive assessment, although no certificate numbers, validity dates, or issuing bodies are provided.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions and customer complaints, and it reports overseas agents or branches, inventory capability, defined quotation and payment terms, and one-month lead times in both seasons. However, it has no overseas warehouse or showroom, so the evidence supports procedural and service responsiveness rather than comprehensive local infrastructure.

R&D capabilityInnovation evidence includes a strong R&D team, technical patents and software copyrights, new products developed during the past year, 3D design services, R&D audit documentation, and use of AutoCAD, Pro/E, and SolidWorks. The lack of an available SDK is a stated limitation, but the broader evidence supports strong product and engineering innovation capability.

Production capacityThe supplier manufactures electronic components, has controlled finished-product inspection instructions, inventory capability, one-month stated lead times in peak and off-season periods, and long export experience. A real limitation is that no valid contract exists between the factory and affiliated subcontractors, which weakens documented subcontracting-capacity assurance.

Customization capabilityThe supplier explicitly provides OEM and ODM services and supports customization from samples, designs, full customization, minor customization, and flexible customization. It also provides 3D software design services, directly supporting a broad customization offering.