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

Vishay General Semiconductor - Diodes Division S4PGHM3_A/I

Name: S4PGHM3_A/I
Brand: Vishay General Semiconductor - Diodes Division
SKU: S4PGHM3_A/I
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S4PGHM3_A/I

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Diodes

Package:: TO-277, 3-PowerDFN

Datasheet:: S4PGHM3_A/I.pdf

Description:: DIODE GEN PURP 400V 4A TO277A

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Product details

Overview

S4PGHM3_A/I from Vishay General Semiconductor is a high-current-density, glass-passivated surface-mount rectifier diode in the eSMP® series, rated for 4.0 A average forward current and 400 V maximum repetitive peak reverse voltage, with 100 A surge capability and low 0.860 V forward voltage at 4 A - used in automotive DC/DC converters, industrial power supplies, and telecom rectification.

For engineers reviewing the S4PGHM3_A/I datasheet, S4PGHM3_A/I pinout, S4PGHM3_A/I application, or S4PGHM3_A/I equivalent, this page delivers verified package mapping (SMPC/TO-277A), thermal resistance (R_θJA = 60 °C/W), junction capacitance (30 pF), reverse recovery time (2.5 μs), and AEC-Q101 qualification status for automotive-grade design validation.

Technical Context

This device is a single-die, planar, glass-passivated silicon junction rectifier optimized for high-efficiency, space-constrained power conversion. Its SMPC (TO-277A) package enables automated placement and supports MSL Level 1 reflow up to 260 °C peak.

It operates across -55 °C to +150 °C junction temperature range, exhibits 10 μA max reverse leakage at 25 °C, and delivers stable forward conduction with VF = 0.860 V at IF = 4 A and TJ = 125 °C - critical for thermal management in high-duty-cycle applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - supports input rectification in 24 V–48 V industrial and automotive systems without derating.
I_F(AV)	4.0 A - continuous DC output capability for mid-power SMPS and freewheeling paths.
I_FSM	100 A - withstands short-duration inrush and fault currents in converter primary-side protection.
V_F @ 4 A	0.860 V - reduces conduction loss and improves efficiency in high-current, low-voltage rails.
t_rr	2.5 μs - enables operation in 100 kHz–500 kHz switching topologies with minimal switching loss.
R_θJA	60 °C/W - requires ≤ 1 oz. copper pad layout for thermal compliance at full load in ambient ≤ 70 °C.
C_J	30 pF @ 4 V - limits capacitive coupling noise in high-frequency gate-drive or sensing circuits.

Pinout & Package

Package: SMPC (TO-277A), ultra-low-profile surface-mount case with matte tin-plated leads, UL 94 V-0 molding compound, and JESD 201 Class 2 whisker resistance (HM3 suffix).

Pin/Terminal	Circuit Role	Design Meaning
Anode 1	Forward current entry point	Connected to positive input rail; dual-anode configuration allows parallel mounting or shared cathode topology.
Anode 2	Forward current entry point	Electrically tied to Anode 1 internally; provides mechanical stability and thermal symmetry in PCB layout.
Cathode (K)	Forward current exit / reverse blocking terminal	Marked with band; serves as common output node for rectified DC; must be routed with low-inductance path.

Key Features

Feature	Design Value
Low profile (1.1 mm typical height)	Enables stacking under heat sinks or integration into ultra-thin power modules without mechanical interference.
Glass passivated junction	Provides robust moisture and contamination resistance for long-term reliability in humid or chemically aggressive environments.
AEC-Q101 qualified (HM3 suffix)	Validated for automotive powertrain and body electronics per stress test requirements including HTGB, HTRB, and TCT.
MSL Level 1 (260 °C peak)	Supports standard lead-free reflow without pre-baking, reducing manufacturing complexity and cost.
Halogen-free & RoHS-compliant	Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green electronics.

Applications

Automotive DC/DC Converters	Industrial AC/DC Power Supplies
Use Scenario: Step-down conversion from 48 V battery to 12 V auxiliary rail in ADAS ECUs. IC Role / Device Role / Timing Role: Output rectifier in synchronous buck secondary side, handling continuous 3.5 A load with transient surges. Use Value: Low V_F (0.860 V) minimizes power loss and thermal rise in confined ECU enclosures.	Use Scenario: Input bridge rectification in 100 W industrial SMPS for PLC I/O modules. IC Role / Device Role / Timing Role: Single-phase full-wave rectifier replacing discrete diode pairs to reduce BOM count and footprint. Use Value: 400 V V_RRM and 100 A I_FSM ensure margin against line transients and startup surges.
Telecom Rectifier Modules	Freewheeling Diodes in Motor Drives
Use Scenario: Secondary-side rectification in 48 V telecom rectifier bricks delivering 5–10 A to server PSUs. IC Role / Device Role / Timing Role: High-density rectifier operating at 200–300 kHz switching frequency with tight thermal constraints. Use Value: 2.5 μs t_rr and 30 pF C_J suppress switching noise and reduce EMI filter burden.	Use Scenario: Freewheeling path for 24 V brushed DC motor control in factory automation actuators. IC Role / Device Role / Timing Role: Clamp diode across inductive load, conducting during PWM off-time to recirculate current. Use Value: 150 °C max junction temperature and -55 °C min storage rating support wide ambient deployment.

Automotive DC/DC Converters

Industrial AC/DC Power Supplies

Use Scenario: Step-down conversion from 48 V battery to 12 V auxiliary rail in ADAS ECUs.

IC Role / Device Role / Timing Role: Output rectifier in synchronous buck secondary side, handling continuous 3.5 A load with transient surges.

Use Value: Low V_F (0.860 V) minimizes power loss and thermal rise in confined ECU enclosures.

Use Scenario: Input bridge rectification in 100 W industrial SMPS for PLC I/O modules.

IC Role / Device Role / Timing Role: Single-phase full-wave rectifier replacing discrete diode pairs to reduce BOM count and footprint.

Use Value: 400 V V_RRM and 100 A I_FSM ensure margin against line transients and startup surges.

Telecom Rectifier Modules

Freewheeling Diodes in Motor Drives

Use Scenario: Secondary-side rectification in 48 V telecom rectifier bricks delivering 5–10 A to server PSUs.

IC Role / Device Role / Timing Role: High-density rectifier operating at 200–300 kHz switching frequency with tight thermal constraints.

Use Value: 2.5 μs t_rr and 30 pF C_J suppress switching noise and reduce EMI filter burden.

Use Scenario: Freewheeling path for 24 V brushed DC motor control in factory automation actuators.

IC Role / Device Role / Timing Role: Clamp diode across inductive load, conducting during PWM off-time to recirculate current.

Use Value: 150 °C max junction temperature and -55 °C min storage rating support wide ambient deployment.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay S4PG-M3/86A	Commercial grade (non-AEC-Q101), same V_RRM/I_F(AV)/package, but JESD 201 Class 1A whisker rating.	Lacks automotive qualification; suitable only for consumer or industrial non-safety-critical use.	Select when AEC-Q101 is not required and cost sensitivity outweighs qualification needs.
ON Semiconductor MUR440G	Ultrafast recovery (t_rr ≈ 50 ns), TO-220AC package, higher V_F (1.25 V @ 4 A), no AEC-Q101.	Better high-frequency performance but larger footprint and higher conduction loss; not automotive-qualified.	Prefer for >1 MHz switching where trr dominates loss, but avoid if space or automotive compliance is mandatory.

Compared with S4PGHM3_A/I, S4PG-M3/86A offers identical electrical specs without automotive qualification, while MUR440G trades lower trr for higher VF and larger package - making S4PGHM3_A/I optimal for space-constrained, thermally demanding automotive and industrial rectification where AEC-Q101 and low profile are essential.

Availability

S4PGHM3_A/I is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial AC/DC power supplies, and telecom rectifier modules requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101-compliant sourcing.

Supply support for S4PGHM3_A/I 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

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.

The eSMP® series - including S4PGHM3_A/I - was engineered for high-current-density, low-profile surface-mount rectification in automotive, industrial, and telecom power systems where thermal performance, AEC-Q101 compliance, and automated assembly are critical.

FAQ

What is the maximum junction temperature rating for S4PGHM3_A/I?

The S4PGHM3_A/I has a maximum junction temperature (T_J) of +150 °C, enabling reliable operation in high-ambient environments such as engine bay-mounted power modules or enclosed industrial controllers. This rating is validated per AEC-Q101 stress testing and supported by its R_θJA of 60 °C/W under standard PCB layout conditions. Derating curves in the Vishay datasheet (Document #89032) confirm usable current capacity down to -55 °C storage temperature.

Is S4PGHM3_A/I pin-compatible with other devices in the S4P family?

Yes, S4PGHM3_A/I shares the SMPC (TO-277A) package and identical 3-terminal pinout (Anode 1, Anode 2, Cathode) with all S4P-series variants (S4PB through S4PM). This allows direct substitution across voltage ratings (100 V to 1000 V) without PCB changes - provided thermal and electrical margins are verified for the specific V_RRM and I_F(AV) requirements of S4PGHM3_A/I.

Does S4PGHM3_A/I meet automotive qualification standards?

Yes, S4PGHM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's datasheet #89032. It undergoes rigorous stress testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT) to ensure reliability in automotive powertrain and body electronics applications.

What is the reverse recovery time (t_rr) of S4PGHM3_A/I, and how does it affect switching performance?

The S4PGHM3_A/I has a typical reverse recovery time (t_rr) of 2.5 μs under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions. This value supports efficient operation in switching power supplies up to ~500 kHz, minimizing turn-off losses and reducing EMI generation compared to standard recovery diodes. For higher-frequency designs (>1 MHz), ultrafast alternatives like MUR440G may be considered - though with trade-offs in VF and package size.

How does the glass passivation in S4PGHM3_A/I improve long-term reliability?

The glass passivation layer on the S4PGHM3_A/I's silicon die provides superior protection against moisture ingress, ionic contamination, and mechanical stress versus polymer-passivated diodes. This enhances long-term parameter stability - especially reverse leakage (IR ≤ 10 μA at 25 °C) and breakdown voltage consistency - in humid, high-vibration, or chemically exposed environments such as automotive under-hood or outdoor telecom installations.

S4PGHM3_A/I Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: eSMP®

Package/Case:: TO-277, 3-PowerDFN

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 400 V

Current - Average Rectified (Io):: 4A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 4 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 2.5 µs

Current - Reverse Leakage @ Vr:: 10 µA @ 400 V

Capacitance @ Vr, F:: 30pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-277A (SMPC)

Operating Temperature - Junction:: -55°C ~ 150°C

S4PGHM3_A/I FAQ

1.How can I place an order for S4PGHM3_A/I through Aetrix?

Please submit a Request for Quotation (RFQ) for S4PGHM3_A/I 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 S4PGHM3_A/I reliable?

The price and inventory of S4PGHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S4PGHM3_A/I is usually 5 days.

3.What payment methods are accepted for S4PGHM3_A/I?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S4PGHM3_A/I transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S4PGHM3_A/I?

S4PGHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S4PGHM3_A/I 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 S4PGHM3_A/I?

For technical support, including S4PGHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S4PGHM3_A/I requirements.

6.How does Aetrix verify that S4PGHM3_A/I is sourced from the original manufacturer or authorized distributors?

All S4PGHM3_A/I 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 S4PGHM3_A/I meets industry standards.

7.What is the process for return or replacement of S4PGHM3_A/I?

All S4PGHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with S4PGHM3_A/I, 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 S4PGHM3_A/I part is unused and in its original packaging.

Return procedure for S4PGHM3_A/I:

1.Submit a request within 90 days.

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

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