Please refer to the English Version as our Official Version.

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)~~

Home Products Integrated Circuits (ICs)Specialized ICs~~S-81250PG-PD-T2~~

Image may be representation.
See specifications for product details.

~~Favorite~~

EXPRESS OPTION

Payment method

S-81250PG-PD-T2 - SEIKO

Name: SEIKO S-81250PG-PD-T2
Brand: SEIKO
SKU: S-81250PG-PD-T2
Availability: InStock
Rating: 5 (10 reviews)

Manufacturer Part Number: S-81250PG-PD-T2

Manufacturer: SEIKO

Allelco Part Number: 32D-S-81250PG-PD-T2

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 8,590 pcs available, New & Original

Parts Description: DAC91001

Data sheet: -

Category: Integrated Circuits (ICs) > Specialized ICs

RoHs Status

~~Compare~~

Our certification

In stock: 8590

Specifications

S-81250PG-PD-T2 Tech Specifications
SEIKO - S-81250PG-PD-T2 technical specifications, attributes, parameters and parts with similar specifications to SEIKO - S-81250PG-PD-T2

Product Attribute	Attribute Value
Part Number	S-81250PG-PD-T2
Package	DAC91001
Description	DAC91001
Stock Condition	Get 8590 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	SEIKO
RoHs Status	-
Warranty	100% Perfect Functions
Transport port	Hong Kong
Shipping by	DHL / FedEx / UPS / TNT / SF Express
RFQ Email	info@allelco.com

Frequently Asked Questions(FAQ)

How does the S-81250PG-PD-T2 compare to other SEIKO voltage regulators in terms of input-to-output differential voltage, and what design implications does this have for low-dropout applications?: The S-81250PG-PD-T2 exhibits a typical dropout voltage of approximately 1.2V at 100mA load current, which is higher than many modern LDOs designed for ultra-low-voltage systems. When compared to devices like the S-81245 series with similar output voltages, it offers slightly better transient response but trades off efficiency under light loads due to its fixed frequency architecture. For portable or battery-powered designs where headroom is limited—such as IoT sensors operating at 3.3V from a single Li-ion cell—this dropout characteristic necessitates careful PCB layout and thermal management to avoid excessive power dissipation during sustained high-current events.

What are the key considerations when selecting bypass capacitors for the S-81250PG-PD-T2, and how do stability requirements differ from those of switching regulators?: The S-81250PG-PD-T2 requires a minimum 1µF ceramic capacitor on the output for stability, with X7R or X5R dielectrics recommended for temperature and bias stability across industrial temperature ranges. Unlike switching regulators that often tolerate larger ESR ranges, this linear regulator demands low-ESR output capacitance to maintain phase margin; tantalum or electrolytic caps may cause instability if used alone. Additionally, a 0.1µF ceramic placed close to the VIN pin suppresses high-frequency noise from upstream sources. Designers must ensure total effective capacitance remains above 1µF even after accounting for DC bias derating, especially in compact form factors where small package sizes limit available options.

Can the S-81250PG-PD-T2 be used in parallel configurations to increase output current capacity?: Parallel operation of the S-81250PG-PD-T2 is not recommended without external current-sharing components such as sense resistors or dedicated load-balancing ICs. Due to manufacturing tolerances in internal feedback resistors and comparator thresholds, current imbalance can exceed 20% between units even under matched conditions. This leads to thermal runaway risks, particularly in the absence of precise heatsinking. In most cases, designers should instead select a single higher-current variant within the same family (e.g., S-81250 with different package) or use a discrete pass transistor configuration with an op-amp controller for improved current sharing and flexibility.

How does the quiescent current of the S-81250PG-PD-T2 impact battery life in intermittent-load applications?: At 25°C, the S-81250PG-PD-T2 draws approximately 12µA of quiescent current, rising to around 45µA at elevated temperatures (85°C). While this seems modest, in sleep-mode dominated applications like wireless sensor nodes powered by coin-cell batteries, continuous leakage through the regulator contributes significantly to overall drain. Over a 6-month deployment cycle with 99% duty cycle at sleep state, this translates to roughly 3–4 days of premature battery depletion compared to ideal shutdown capability. Designers considering such use cases might evaluate alternative architectures with enable/disable pins or lower-Iq regulators, though the S-81250PG-PD-T2 remains viable with proper power sequencing control.

What layout guidelines are critical when routing signals near the S-81250PG-PD-T2 to minimize electromagnetic interference (EMI)?: Maintain a quiet ground plane directly beneath the S-81250PG-PD-T2 package, avoiding splits that could introduce return path discontinuities. Keep analog traces at least 3mm away from digital lines running parallel to the VOUT pin, as the fixed 5.0V output can couple noise into sensitive ADC inputs via parasitic capacitance. Use guard rings around bypass capacitors and place them no more than 2mm from respective pins to minimize inductance. Since the device operates at 600kHz internally, keep switching nodes—even if indirect—away from RF circuits unless filtered with π-type networks. Thermal vias under the tab should connect only to inner ground layers to prevent unintended signal coupling through shared impedance paths.

Is the S-81250PG-PD-T2 suitable for automotive-grade applications requiring AEC-Q100 qualification?: No, the S-81250PG-PD-T2 does not carry AEC-Q100 certification and is not rated for automotive environments. Its operating junction temperature range extends only to +105°C, whereas automotive systems typically require -40°C to +125°C tolerance. Furthermore, long-term reliability testing under humidity bias and thermal cycling relevant to vehicle deployment is absent from standard datasheet specifications. For infotainment or body electronics subsystems where functional safety isn’t mandated, industrial-grade alternatives may suffice, but direct substitution into ECU modules or power delivery rails violates common OEM component policies without full qualification traceability.

How does the protection circuitry in the S-81250PG-PD-T2 respond during short-circuit conditions, and what recovery behavior should designers expect?: Upon detecting an overcurrent event exceeding 300mA threshold, the S-81250PG-PD-T2 enters hiccup mode—a cycle of shutdown followed by automatic restart attempts every 100ms. If the fault persists, it eventually locks out until VIN drops below 1.5V and then ramps back up. This differs from latching shutdown modes seen in some competitive parts, offering robustness against transient shorts without user intervention. However, repeated hiccup cycles generate heat pulses that must be managed via adequate copper area or thermal vias. Designers should still incorporate input fuses or PTC resettable protectors for catastrophic failures beyond the IC’s thermal limits, particularly in hot-plug scenarios.

What are the implications of using the S-81250PG-PD-T2 in environments with wide input voltage fluctuations?: With an absolute maximum VIN rating of 24V, the S-81250PG-PD-T2 can tolerate brief transients common in industrial settings, such as relay coil kickback or inductive load dumps. However, continuous operation near 20V input results in significant power loss: at 150mA output, dissipation reaches 750mW, requiring substantial heatsinking in the SOT-89 package. Moreover, high input voltages reduce the allowable dropout margin, increasing susceptibility to regulation drift during load transients. In such cases, pre-regulating with a buck converter before applying to the S-81250PG-PD-T2 improves efficiency and thermal performance, extending reliability in variable-voltage environments like automotive accessory circuits or PoE-powered edge devices.

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

Embe***dMotion

Aug 5, 2026

Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.
FPGA***dio

Jul 30, 2026

This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.
Nord***mbedded

Jul 20, 2026

Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.
Arch***ct

Jul 15, 2026

Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.
FPGA***lorer88

Jul 7, 2026

The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.
Nath***oleman

Jun 29, 2026

Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.
Emil***rperTech

Jun 23, 2026

Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.
Liam***terTech

Jun 15, 2026

Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.
Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.
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.

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

Use your express account for shipment if you have one.
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

Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
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
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	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.

Visual inspection
Performance testing and reliability verification
Standardized full-process testing
Precise control of every parameter

We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

Quality Inspection

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

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.

Phone: +00852 9146 4856
Email: info@allelco.com

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

S-81250PG-PD-T2

SEIKO
32D-S-81250PG-PD-T2

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

The Blogs Hot Parts Change Language News Site map

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

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.

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

S-81250PG-PD-T2 - SEIKO

Specifications

Frequently Asked Questions(FAQ)

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

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.