About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsIntegrated Circuits (ICs)Specialized ICsS3B-XH-SM4-TB
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

S3B-XH-SM4-TB - JST

Manufacturer Part Number
S3B-XH-SM4-TB
Manufacturer
JST
Allelco Part Number
32D-S3B-XH-SM4-TB
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
11,680 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
Compare
Our certification
In stock: 11680

Required fields are indicated by an asterisk (*)
Please send RFQ, we will respond immediately.

Quantity

Specifications

S3B-XH-SM4-TB Tech Specifications
JST - S3B-XH-SM4-TB technical specifications, attributes, parameters and parts with similar specifications to JST - S3B-XH-SM4-TB

Product Attribute Attribute Value
Part Number S3B-XH-SM4-TB
Package DAC91001
Description DAC91001
Stock Condition Get 11680 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer JST
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Parts Introduction

Manufacturer Part Number

S3B-XH-SM4-TB

Manufacturer

jst

Introduction

This is a 3-position, 1-row, shrouded, surface mount, right-angle header with male pin contacts. It is part of the XH series and designed for board-to-cable/wire connections. The product features solder retention for secure and reliable connections.

Product Features and Performance

3 positions, 1 row

Shrouded design with 4-wall protection

Surface mount, right-angle orientation

Male pin contacts

50mm (0.098") pitch

Solder termination

Detent lock for secure mating

Operating temperature range: -25°C to 85°C

Current rating: 3A

Voltage rating: 250V

UL94 V-0 flammability rating

Product Advantages

Secure and reliable connections with solder retention feature

Shrouded design provides protection for the contacts

Right-angle orientation allows for flexible cable/wire routing

Surface mount for easy PCB integration

Key Reasons to Choose This Product

Robust and reliable performance for your board-to-cable/wire connectivity needs

Compact and space-saving design with surface mount configuration

Comprehensive safety and quality features for reliable operation

Compatibility with a wide range of applications

Quality and Safety Features

UL94 V-0 flammability rating for fire safety

Tin-plated copper alloy contacts for corrosion resistance

Polyamide (PA6T) and nylon 6T insulation materials

Compatibility

This header connector is compatible with a variety of cable/wire assemblies and can be used in various electronic and electrical applications.

Application Areas

Consumer electronics

Industrial equipment

Automotive electronics

Telecommunications equipment

Medical devices

Product Lifecycle

The S3B-XH-SM4-TB is an active product, and there are no plans for discontinuation at this time. JST offers a range of equivalent and alternative connector models within the XH series to meet different application requirements. If you need further assistance, please contact our sales team through our website.

Frequently Asked Questions(FAQ)

What are the key electrical and mechanical specifications of the S3B-XH-SM4-TB 3-position right-angle header, and how do they influence PCB layout decisions?
The S3B-XH-SM4-TB features a 2.50mm pitch, 3-position male pin configuration with a 3A current rating per contact and a 250V voltage rating, supporting robust signal and power routing in compact designs. Its right-angle surface-mount orientation enables vertical PCB stacking or space-constrained board layouts where horizontal connector placement is limited. The shrouded 4-wall design provides mechanical stability and reduces misalignment during mating, which is particularly beneficial in vibration-prone environments. With an insulation height of 6.00mm, this connector maintains adequate creepage distances for its 250V rating, aiding compliance with safety standards like UL94 V-0. Engineers should verify that trace widths and via placements accommodate the 3A current without excessive thermal buildup.
How does the S3B-XH-SM4-TB compare to through-hole equivalents in terms of assembly efficiency and long-term reliability?
Unlike through-hole headers requiring drilled holes and wave soldering, the S3B-XH-SM4-TB uses surface mount technology (SMT), enabling automated pick-and-place assembly and higher throughput in high-volume manufacturing. Its solder retention feature improves joint integrity by resisting mechanical stress during handling, which enhances reliability compared to standard through-hole parts prone to pad lifting under thermal cycling. Additionally, the right-angle form factor allows denser PCB utilization than upright through-hole connectors. However, through-hole variants may offer better mechanical support for heavy mating cycles or harsh environments, making the choice dependent on application demands rather than inherent superiority.
Can the S3B-XH-SM4-TB be used in high-temperature industrial applications, and what environmental factors should be considered beyond the stated operating range?
While rated for -25°C to 85°C, the S3B-XH-SM4-TB’s nylon 6T (PA6T) insulation material exhibits good thermal stability, but prolonged exposure near the upper limit may accelerate material aging. In high-humidity conditions, even though MSL is 1 (unlimited shelf life), moisture ingress during storage could affect tin-plated contacts if not properly handled. For applications exceeding 85°C intermittently, such as near power supplies, engineers should assess localized heating effects and consider airflow or spacing to maintain safe temperatures. The UL94 V-0 flammability rating ensures fire resistance, but system-level enclosure design must account for adjacent components with lower ratings.
What mating interface considerations apply when using the S3B-XH-SM4-TB with ribbon cables or custom flat flex connectors?
The detent lock mechanism and square-pin contact geometry ensure secure engagement with compatible female crimp housings, but compatibility with third-party flat cables depends on precise pitch alignment and tab width. Deviations greater than ±0.15mm from the 2.50mm nominal pitch can cause insertion force spikes or intermittent connections. The 4-wall shrouding offers lateral guidance but may interfere with low-profile cable assemblies lacking corresponding guide ribs. Engineers should validate mechanical clearances and simulate mating forces to prevent damage during repeated insertions, especially in field-replaceable modules.
How does the contact finish thickness of the S3B-XH-SM4-TB impact corrosion resistance and signal integrity over time?
Although the datasheet does not specify exact thickness, typical JST XH series use a minimum of 1.27µm tin plating, providing moderate oxidation protection but requiring careful handling in corrosive atmospheres. Tin’s high resistivity compared to gold makes it less suitable for high-frequency signals above 100MHz, where insertion loss increases due to surface oxide formation. For DC or low-speed digital signals (e.g., I²C, GPIO), tin performs adequately with proper cleaning during maintenance. In humid environments, tin whiskers remain a concern, though JST’s controlled plating processes minimize this risk—still, conformal coating may be advisable in mission-critical systems.
What trade-offs exist between using the S3B-XH-SM4-TB versus higher-pin-count connectors when future scalability is a concern?
Selecting a 3-position S3B-XH-SM4-TB simplifies initial routing and reduces BOM cost, but leaves minimal headroom for expansion. Adding breakout boards or additional headers introduces signal crosstalk, impedance discontinuities, and cumulative insertion losses. In contrast, a 6-position version would halve the per-contact current density at the same total power, improving thermal performance and reducing voltage drop across long traces. However, larger connectors consume more PCB real estate and may require redesign if space is constrained. The decision hinges on projected load growth and whether modular architectures can absorb incremental changes without major revision.
Is the S3B-XH-SM4-TB suitable for automotive-grade applications given its RoHS compliance and standard temperature range?
RoHS compliance and UL94 V-0 rating indicate adherence to hazardous substance regulations and flame retardancy, but automotive qualification requires stricter criteria such as AEC-Q200 validation, extended temperature cycling (-40°C to +125°C), and humidity exposure testing. The S3B-XH-SM4-TB’s -25°C to 85°C range falls short of most automotive standards, and while PA6T has excellent dimensional stability, solder joint fatigue under thermal stress remains unverified for high-reliability environments. Thus, it may serve non-automotive infotainment peripherals but should be replaced with certified alternatives like JAE MX series or TE AMPMODU for powertrain or safety-critical circuits.
How should PCB land patterns be designed to optimize reliability for the S3B-XH-SM4-TB during reflow soldering?
IPC-7351 guidelines recommend slightly oversized pads (e.g., 1.8mm x 2.8mm) to accommodate paste variation and ensure sufficient wetting area despite the small contact size. Solder mask defined pads reduce tombstoning risk, but overly tight tolerances increase misregistration errors. Given the component’s 0.15mm lead width, stencils should use laser-cut apertures with trapezoidal shapes to promote uniform deposition. Thermal reliefs must balance reflow efficiency against mechanical pull-off strength; too many spokes delay heat transfer, while too few risk delamination during mating forces. Simulation tools like Ansys Sherlock can model these interactions, but empirical testing with actual assemblies remains essential.
What is the significance of the "S" suffix in the base model S3B-XH-S, and how does it affect interchangeability among variants?
The "S" denotes surface-mount capability within the S3B-XH-S family, distinguishing it from through-hole versions (typically marked without "S"). Variants like S3B-XH-AM or S3B-XH-BM use different contact finishes or orientations, so direct substitution without verifying polarity and mounting type can cause assembly errors. While all share the same 2.50mm pitch and 3-position layout, differences in locking mechanisms or post lengths necessitate checking mating part compatibility. Always cross-reference full part numbers—not just base codes—to avoid costly rework during production transitions.
How does the S3B-XH-SM4-TB perform in terms of EMI shielding when used in noisy digital systems?
As a non-shielded header, the S3B-XH-SM4-TB offers no intrinsic EMI containment. High-speed signals routed through its contacts can act as antennas, radiating emissions or picking up noise from adjacent traces. To mitigate this, ground planes should flank signal paths, and guard traces with vias connected to ground can be implemented around sensitive lines. Shielding effectiveness increases significantly if paired with a shielded cable or housing that bridges the connector interface, creating a continuous Faraday cage. Without such measures, systems meeting FCC Class B limits may fail unless additional filtering or layout discipline is applied.
What precautions are necessary when hand-soldering the S3B-XH-SM4-TB to avoid thermal damage or joint defects?
Hand soldering requires fine-tip irons below 35W to prevent overheating PA6T insulation, which softens above 260°C. Applying flux and preheating the PCB to 100–150°C minimizes thermal shock. Excessive dwell time causes pad lifting, especially on FR4 substrates with thin copper layers. Use drag soldering or sequential pin soldering to distribute heat evenly across the three contacts. Inspect joints for insufficient wetting or bridging; the detent lock’s proximity to adjacent pins raises the risk of shorts if solder splashes occur. Automated reflow remains preferable for consistency, but skilled technicians can achieve acceptable results with proper tooling and process control.
How do the packaging options—Cut Tape (CT) and Digi-Reel®—affect procurement and inventory management for the S3B-XH-SM4-TB?
Cut tape suits low-volume prototyping where reel-fed automation isn’t feasible, offering immediate availability but potentially higher per-unit costs. Digi-Reel® enables high-speed SMT feeding and reduces manual handling, lowering labor and contamination risks during mass production. However, unused tape sections complicate inventory tracking unless managed via ERP integration. Lead times for cut tape are typically shorter, aiding rapid iterations, whereas reels ensure consistent presentation and reduce misfeeds in automated lines. Suppliers often bundle both formats, allowing phased adoption from prototype to production without changing sourcing strategy.

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
Quality Inspection Image - 01
Quality Inspection Image - 02
Quality Inspection Image - 03
Quality Inspection Image - 04

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
JST

S3B-XH-SM4-TB

JST
32D-S3B-XH-SM4-TB

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB