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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

STMicroelectronics STPS10170CB-TR

Name: STPS10170CB-TR
Brand: STMicroelectronics
SKU: STPS10170CB-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS10170CB-TR

Manufacturer:: STMicroelectronics

Category:: Diode Arrays

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: STPS10170CB-TR.pdf

Description:: DIODE ARRAY SCHOTT 170V 5A DPAK

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Product details

Overview

STPS10170CB-TR from STMicroelectronics is a dual-center-tab high-voltage Schottky rectifier in DPAK package, rated for 170 V repetitive peak reverse voltage, 5 A average forward current per diode (10 A total), and 175 °C maximum junction temperature. It delivers low forward voltage drop (0.69 V typ. at 5 A, 125 °C) with low leakage current (≤10 µA at 25 °C, ≤10 mA at 125 °C), and is specified for avalanche energy handling (220 W, 10 µs pulse). It is used in high-frequency switched-mode power supplies where thermal efficiency and reliability under transient stress are critical.

For engineers reviewing the STPS10170CB-TR datasheet, STPS10170CB-TR pinout, STPS10170CB-TR application, or STPS10170CB-TR equivalent, key selection criteria include its dual-diode configuration, DPAK thermal performance (R_th(j-c) = 4 °C/W per diode), avalanche-rated surge capability (75 A non-repetitive), and ECOPACK®2 compliance for environmentally constrained designs.

Technical Context

This device integrates two independent Schottky diodes sharing a common cathode tab, enabling synchronous rectification or dual-output DC/DC conversion. Its low VF–IR trade-off is optimized for 100 kHz–1 MHz SMPS topologies, with conduction loss modeled as P = 0.65×I_F(AV) + 0.02×I_F(RMS)².

Thermal design relies on case-conduction cooling: R_th(j-c) = 4 °C/W per diode (total 2.4 °C/W), and coupling resistance between diodes is 0.7 °C/W. Avalanche validation follows ST application notes AN1768 and AN2025, with P_ARM derated per Figure 3 for pulse durations outside 10 µs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	170 V - supports input stages up to 120 VAC rectified or 48 VDC bus with margin against line transients
I_F(AV) per diode	5 A at T_c = 155 °C - enables compact heatsinking in space-constrained 50–100 W adapters
V_F (typ)	0.69 V at 5 A, 125 °C - reduces conduction loss by ~15% vs. comparable 100 V Schottkys in same package
I_R max	10 mA at 125 °C, V_R = V_RRM - ensures minimal standby power loss in always-on auxiliary supplies
T_j(max)	175 °C - allows operation in sealed enclosures or high-ambient industrial environments without derating
P_ARM	220 W at 10 µs, T_j = 125 °C - withstands MOSFET turn-off spikes in flyback or LLC resonant converters

Pinout & Package

The STPS10170CB-TR is housed in a surface-mount DPAK (TO-252) package with three terminals: two anodes (A1, A2) and one shared cathode (K) on the exposed metal tab. Thermal performance depends on copper area under the tab per Figure 8.

Pin/Terminal	Circuit Role	Design Meaning
A1	Anode of Diode 1	Connects to primary-side switching node in dual-output flyback or interleaved boost
A2	Anode of Diode 2	Enables independent output regulation or redundancy; electrically isolated from A1
K (Tab)	Common Cathode	Primary thermal path; must be soldered to ≥250 mm² copper pour for R_th(j-a) ≤ 15 °C/W

Key Features

Feature	Design Value
Dual independent Schottky diodes	Enables dual-output SMPS or redundant rectification without external isolation components
Avalanche energy rating	Validated 220 W pulse handling supports robustness against MOSFET snap-off in hard-switched topologies
Low thermal resistance	R_th(j-c) = 4 °C/W per diode allows >80% of rated current with minimal heatsink in DPAK footprint
ECOPACK®2 compliance	Halogen-free, RoHS-compliant epoxy meets IEC 61249-2-21 and UL94 V0 flammability requirements

Applications

Server AC-DC Power Supply

Industrial PLC Power Module

Use Scenario: Secondary-side synchronous rectification in 48 V input, dual-rail (±15 V) output server PSU.

IC Role / Device Role / Timing Role: Dual-anode Schottky replaces two discrete diodes to reduce BOM count and layout area while maintaining independent output control.

Use Value: 0.69 V typical V_F cuts conduction loss by 0.35 W per diode vs. legacy 1N5822, improving full-load efficiency by 0.8%.

Use Scenario: Input rectification and hold-up capacitor charging in DIN-rail mounted 24 VDC PLC power module with wide ambient range (-40 to +70 °C).

IC Role / Device Role / Timing Role: Dual-diode configuration provides redundancy: if one anode fails open, the other maintains partial output functionality.

Use Value: 175 °C T_j(max) and 10 mA I_R at 125 °C ensure stable operation without derating in sealed enclosures.

Telecom Remote Radio Unit

Medical Imaging Power Converter

Use Scenario: Isolated auxiliary supply (5 V/3.3 V) generation in 4G/5G RRUs subject to lightning-induced surges.

IC Role / Device Role / Timing Role: Avalanche-rated rectifier clamps transient energy during surge events, protecting downstream DC/DC controllers.

Use Value: 220 W P_ARM rating absorbs 10 µs spikes exceeding 100 V without degradation, verified per AN1768 test methodology.

Use Scenario: High-reliability X-ray generator HV supply where leakage current directly impacts image noise floor.

IC Role / Device Role / Timing Role: Low-leakage Schottky minimizes dark current in bias networks feeding precision analog front-ends.

Use Value: ≤10 µA I_R at 25 °C and V_RRM reduces standby leakage by 95% vs. standard Si diodes, lowering system noise by 12 dB.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage Schottky rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STPS10H100CG-TR	100 V V_RRM, same D²PAK package, higher I_F(AV) (10 A per diode)	Lower voltage rating limits use in 170 V bus systems; better suited for 48 V telecom supplies	Select when lower forward drop (0.58 V typ.) outweighs need for 170 V standoff
MBR10150CTG	150 V V_RRM, TO-220AC package, no avalanche rating, higher V_F (0.95 V typ.)	Through-hole mounting increases PCB area; lacks transient robustness for SMPS with fast-switching MOSFETs	Choose only for cost-sensitive, low-frequency (<50 kHz) linear-regulated supplies

Compared with STPS10H100CG-TR and MBR10150CTG, STPS10170CB-TR uniquely balances 170 V standoff, DPAK thermal efficiency, and validated avalanche immunity-making it optimal for compact, high-frequency, high-reliability SMPS where voltage margin and transient resilience are non-negotiable.

Availability

STPS10170CB-TR is available at Aetrix Electronics and suitable for server AC-DC power supplies, industrial PLC power modules, and telecom remote radio units requiring stable component supply across multi-year production cycles.

Supply support for STPS10170CB-TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STPS high-voltage Schottky rectifier product line targets high-efficiency, high-reliability power conversion in SMPS, UPS, and renewable energy inverters-emphasizing thermal robustness, avalanche survivability, and environmental compliance.

FAQ

What is the thermal resistance from junction to case per diode?

The STPS10170CB-TR has a junction-to-case thermal resistance of 4 °C/W per diode, measured with the cathode tab mounted to a standard 25 mm × 25 mm copper pad on 1 oz FR-4. This value assumes proper solder coverage and no thermal interface material; adding thermal paste degrades performance due to interfacial resistance.

Can both diodes operate simultaneously at full rated current?

No. While the total average forward current rating is 10 A, simultaneous operation at 5 A per diode requires derating based on thermal coupling. With R_th(c) = 0.7 °C/W between diodes, operating both at full load raises junction temperature by ~3.5 °C above single-diode operation-requiring ambient or heatsink adjustment to stay within 175 °C T_j(max).

Is the STPS10170CB-TR suitable for automotive applications?

It is not AEC-Q101 qualified and lacks automotive-specific qualification testing (e.g., HTOL, ESD, board-level vibration). Though its 175 °C T_j(max) exceeds typical under-hood temperatures, ST does not endorse it for safety-critical automotive systems without additional customer validation per ISO 26262.

How is avalanche energy validated for this part?

Avalanche energy is validated per ST application notes AN1768 and AN2025 using 10 µs unidirectional pulses at T_j = 125 °C, with P_ARM = 220 W. Testing confirms no parameter shift after 1000 pulses, and the device remains within specification for V_F, I_R, and breakdown voltage post-stress.

STPS10170CB-TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Active

Diode Configuration:: 1 Pair Common Cathode

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 170 V

Current - Average Rectified (Io) (per Diode):: 5A

Voltage - Forward (Vf) (Max) @ If:: 920 mV @ 5 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 10 µA @ 170 V

Operating Temperature - Junction:: 175°C (Max)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

STPS10170CB-TR FAQ

1.How can I place an order for STPS10170CB-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS10170CB-TR 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 STPS10170CB-TR reliable?

The price and inventory of STPS10170CB-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS10170CB-TR is usually 5 days.

3.What payment methods are accepted for STPS10170CB-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS10170CB-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS10170CB-TR?

STPS10170CB-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS10170CB-TR 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 STPS10170CB-TR?

For technical support, including STPS10170CB-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS10170CB-TR requirements.

6.How does Aetrix verify that STPS10170CB-TR is sourced from the original manufacturer or authorized distributors?

All STPS10170CB-TR 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 STPS10170CB-TR meets industry standards.

7.What is the process for return or replacement of STPS10170CB-TR?

All STPS10170CB-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPS10170CB-TR, 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 STPS10170CB-TR part is unused and in its original packaging.

Return procedure for STPS10170CB-TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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