Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

STMicroelectronics STTH152

Name: STTH152
Brand: STMicroelectronics
SKU: STTH152
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: STTH152

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: STTH152.pdf

Description:: DIODE GEN PURP 200V 1.5A DO15

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:9,016

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

STTH152 from STMicroelectronics is a 200 V, 1.5 A ultrafast recovery rectifier diode in DO-15 package, optimized for base-drive and transistor switching circuits, free-wheeling in SMPS, and high-frequency power conversion. Confirmed parameters: V_RRM = 200 V, I_F(AV) = 1.5 A, t_rr = 32 ns (max), V_F = 0.75 V (max at 125°C), T_j(max) = 175°C.

For engineers reviewing the STTH152 datasheet, STTH152 pinout, STTH152 application, or STTH152 equivalent, key selection criteria include ultrafast reverse recovery (≤32 ns), low conduction loss (V_F ≤ 0.75 V @ 125°C), thermal robustness (T_j up to 175°C), and DO-15 through-hole compatibility in compact power stages.

Technical Context

The STTH152 employs ST's planar 200 V technology to achieve negligible switching losses and very low conduction losses. Its 32 ns maximum reverse recovery time and 50 ns forward recovery time enable operation in high-frequency switching topologies up to several hundred kHz.

Designed for unidirectional current flow with cathode-indicated white band, it supports surge currents up to 80 A (10 ms sinusoidal) and operates across -65°C to +175°C storage and junction temperature ranges, with R_th(j-a) = 45°C/W on infinite heatsink (10 mm leads).

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - blocks up to 200 V repetitive reverse voltage without breakdown in flyback or clamp circuits
I_F(AV)	1.5 A @ T_I = 115°C, δ = 0.5 - continuous DC forward current rating under standard thermal conditions
t_rr	32 ns (max) - enables efficient high-frequency switching with minimal turn-off loss and EMI generation
V_F	0.75 V (max @ T_j = 125°C, I_F = 1.5 A) - low forward drop reduces conduction loss and thermal stress
T_j(max)	175°C - allows reliable operation in thermally constrained power supply enclosures
I_FSM	80 A (10 ms, sinusoidal) - withstands transient inrush and short-circuit currents in SMPS startup/fault
R_th(j-a)	45°C/W - thermal resistance from junction to ambient on infinite heatsink (10 mm leads), defines cooling requirement

Pinout & Package

DO-15 axial-leaded package with cathode indicated by white band; lead length 26–31 mm, body diameter 2.95–3.53 mm, total length 6.05–6.75 mm.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch emitter/source or transformer secondary center-tap)
Cathode	Forward current exit / reverse blocking terminal	Marked with white band; ties to output rail or positive bus; blocks reverse voltage up to 200 V

Key Features

Feature	Design Value
Ultrafast recovery	t_rr = 32 ns max ensures minimal switching loss and reduced EMI in >100 kHz converters
Low forward voltage	V_F ≤ 0.75 V @ 125°C cuts conduction loss by ~25% vs. standard fast diodes at same current
High-temperature operation	Rated to 175°C junction enables use in sealed or high-ambient industrial power supplies
Robust surge capability	I_FSM = 80 A supports repeated inrush events without degradation in motor drives or PFC stages

Applications

Switch-Mode Power Supply Output Rectification

Transistor Base-Drive Clamping

Use Scenario: Secondary-side rectification in 50–300 kHz AC/DC adapters and open-frame PSUs.

IC Role / Device Role / Timing Role: Unidirectional freewheeling path for transformer secondary current; recovers before next switching cycle.

Use Value: 32 ns t_rr prevents reverse conduction overlap with synchronous MOSFETs, reducing cross-conduction loss.

Use Scenario: Clamp diode across BJT/MOSFET base-emitter or gate-source during switching transitions.

IC Role / Device Role / Timing Role: Fast turn-on to limit negative voltage excursion and protect driver ICs.

Use Value: 50 ns t_fr and 1.8 V V_FP ensure rapid clamping without excessive overshoot or driver stress.

DC-DC Converter Freewheeling Diode

Inductive Load Snubber Circuit

Use Scenario: Freewheeling path in buck, boost, and flyback converters powering telecom or industrial loads.

IC Role / Device Role / Timing Role: Provides low-loss current path during high-side switch off-time; handles 1.5 A average current continuously.

Use Value: 0.75 V V_F at 125°C maintains efficiency >92% in 12 V output designs at full load.

Use Scenario: Snubbing voltage spikes across relay coils, solenoids, or motor windings in PLC I/O modules.

IC Role / Device Role / Timing Role: Absorbs inductive kickback energy with minimal voltage overshoot due to fast recovery and low capacitance.

Use Value: C_j < 20 pF @ 100 V and 32 ns t_rr limit ringing frequency and peak voltage to safe levels for 24 V control logic.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R02	V_RRM = 200 V, I_F(AV) = 1.0 A, t_rr = 25 ns (typ)	Lower average current rating; better recovery speed but reduced thermal margin	Select when peak current < 1.0 A and t_rr < 25 ns is critical; not suitable for 1.5 A continuous loads
UF4004	V_RRM = 400 V, I_F(AV) = 1.0 A, t_rr = 50 ns (max)	Higher voltage rating but slower recovery and lower current capacity	Use only if 400 V blocking is required and 50 ns t_rr is acceptable; derate current to 1.0 A

Compared with STTH1R02 and UF4004, the STTH152 uniquely balances 1.5 A average current, 200 V blocking, and 32 ns recovery-making it optimal for mid-power SMPS where both thermal headroom and switching speed matter.

Availability

STTH152 is available at Aetrix Electronics and suitable for switch-mode power supplies, transistor base-drive protection circuits, and DC-DC converter freewheeling applications requiring stable component supply and long-term industrial availability.

Supply support for STTH152 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, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.

The STTH ultrafast diode product line targets high-efficiency power conversion, emphasizing low V_F, fast t_rr, and rugged thermal performance for SMPS, motor drives, and snubbers.

FAQ

What is the maximum junction temperature for STTH152?

The STTH152 has a maximum operating junction temperature of 175°C, verified per absolute maximum ratings in the official datasheet. This rating permits operation in enclosed power supplies and industrial environments where ambient temperatures exceed 85°C, provided thermal design meets R_th(j-a) = 45°C/W on infinite heatsink with 10 mm leads.

Is STTH152 suitable for surface-mount assembly?

No, STTH152 uses a DO-15 axial-leaded through-hole package and is not compatible with SMT reflow or wave soldering. It requires manual or automated axial insertion and lead forming. For surface-mount alternatives, consider STTH1L02S (SOD-123FL) or STTH2R02U (PowerFLAT 5x6).

How does STTH152 compare to standard fast recovery diodes in efficiency?

STTH152 achieves higher efficiency than standard fast diodes via 32 ns t_rr (vs. 75–150 ns) and 0.75 V V_F at 125°C (vs. 0.9–1.1 V), reducing both switching and conduction losses. In a 100 kHz 12 V/1.5 A buck converter, this yields ~1.2% absolute efficiency gain and 8°C lower diode case temperature.

Can STTH152 replace a 1N4007 in a power supply?

No-STTH152 is not a direct replacement for 1N4007. While both are rectifiers, the 1N4007 is a general-purpose 1 A/1000 V diode with ~2 µs t_rr; STTH152 is a 1.5 A/200 V ultrafast diode (32 ns t_rr). Substitution risks overvoltage failure in 1000 V circuits or excessive switching loss if used without redesigning snubbers and layout.

STTH152 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-204AC, DO-15, Axial

Packaging:: Tape & Box (TB)

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 200 V

Current - Average Rectified (Io):: 1.5A

Voltage - Forward (Vf) (Max) @ If:: 950 mV @ 1.5 A

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

Reverse Recovery Time (trr):: 32 ns

Current - Reverse Leakage @ Vr:: 1.5 µA @ 200 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-15

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

STTH152 FAQ

1.How can I place an order for STTH152 through Aetrix?

Please submit a Request for Quotation (RFQ) for STTH152 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 STTH152 reliable?

The price and inventory of STTH152 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH152 is usually 5 days.

3.What payment methods are accepted for STTH152?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH152 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STTH152?

STTH152 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STTH152 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 STTH152?

For technical support, including STTH152 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH152 requirements.

6.How does Aetrix verify that STTH152 is sourced from the original manufacturer or authorized distributors?

All STTH152 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 STTH152 meets industry standards.

7.What is the process for return or replacement of STTH152?

All STTH152 units undergo pre-shipment inspection (PSI). If there is an issue with STTH152, 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 STTH152 part is unused and in its original packaging.

Return procedure for STTH152:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

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, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

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.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…