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Taiwan Semiconductor Corporation ESH1DFSH
- Part No.:
- ESH1DFSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
ESH1DFSH.pdf
- Description:
- 25NS, 1A, 200V, ULTRA FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:14,000
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Product details
Overview
ESH1DFSH from Taiwan Semiconductor is a 1 A, 200 V ultra-fast surface-mount rectifier diode in SOD-128 package, featuring 25 ns reverse recovery time, 0.84 V forward voltage at 1 A/25°C, and AEC-Q101 qualification for automotive switching mode converters and freewheeling applications.
For engineers reviewing the ESH1DFSH datasheet, ESH1DFSH pinout, ESH1DFSH application, or ESH1DFSH equivalent, key selection criteria include ultra-fast recovery (trr ≤ 25 ns), junction temperature range (–55°C to +175°C), thermal resistance (RθJL = 18°C/W), and SOD-128 mechanical compatibility with automated placement.
Technical Context
The ESH1DFSH is a single-die, glass-passivated silicon PN junction rectifier optimized for high-frequency operation. Its ultra-fast recovery (trr ≤ 25 ns) and low forward voltage (VF = 0.84 V @ 1 A, 25°C) minimize switching losses in automotive SMPS and inverters.
Designed for AEC-Q101 compliance, it supports continuous operation up to TJ = 175°C and features moisture sensitivity level 1 (J-STD-020), halogen-free construction (IEC 61249-2-21), and RoHS compliance - all verified per Taiwan Semiconductor's C2103 specification revision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - maximum repetitive reverse voltage; enables use in 12 V/24 V automotive systems with ≥2× safety margin |
| IF | 1 A continuous forward current - supports compact power stage designs without forced cooling |
| trr | 25 ns max - ensures minimal reverse recovery loss in >100 kHz switching topologies |
| VF | 0.84 V @ 1 A, 25°C - reduces conduction loss vs. standard fast rectifiers (typically >1.1 V) |
| RθJL | 18 °C/W - enables efficient heat transfer to PCB copper pad, critical for high-reliability automotive mounting |
| IFSM | 60 A @ 8.3 ms - withstands typical inrush and fault currents in DC-DC converter outputs |
| CJ | 15 pF @ 4 V - low junction capacitance minimizes capacitive switching noise and EMI generation |
Pinout & Package
SOD-128 surface-mount package: low-profile, molded plastic case meeting UL 94V-0; cathode indicated by band; matte tin-plated leads compliant with J-STD-002 solderability; weight ≈ 0.027 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck freewheel path) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to output rail or higher-potential node; blocks 200 V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and UHAST - required for under-hood power modules |
| Glass passivated junction | Enhances long-term stability of reverse leakage (IR ≤ 5 µA @ 25°C) and prevents surface degradation in humid environments |
| Ultra-fast trr ≤ 25 ns | Reduces turn-off energy loss and diode-induced voltage spikes in synchronous rectifier replacement scenarios |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; compatible with standard SMT assembly lines without special handling |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports green manufacturing and end-of-life compliance |
Applications
| Automotive DC-DC Converters | High-Frequency Freewheeling |
|---|---|
Use Scenario: Step-down conversion in 12 V/48 V dual-battery automotive systems with switching frequencies >200 kHz. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck topology, conducting during low-side FET off-time. Use Value: 25 ns trr and 0.84 V VF reduce power loss by ~18% versus standard fast rectifiers at 1 A, improving thermal margin. | Use Scenario: Inductive load flyback protection in EPS (Electric Power Steering) motor drivers. IC Role / Device Role / Timing Role: Unidirectional current path clamping back-EMF during PWM turn-off transitions. Use Value: AEC-Q101 qualification and 175°C TJMAX ensure robustness against transient thermal stress during repeated motor stall events. |
| On-Board Charger (OBC) Auxiliary Supplies | Industrial SMPS Output Rectification |
Use Scenario: Isolated auxiliary supply rectification in EV on-board chargers operating at 100–300 kHz. IC Role / Device Role / Timing Role: Secondary-side output rectifier delivering bias power to gate drivers and controllers. Use Value: Low RθJL (18°C/W) and SOD-128 footprint enable direct thermal coupling to 5 mm × 5 mm Cu pad, sustaining 1 A continuously at 85°C ambient. | Use Scenario: Output rectification in industrial 24 V/48 V telecom and PLC power supplies. IC Role / Device Role / Timing Role: Primary output diode in non-synchronous flyback or forward converters. Use Value: 200 V VRRM provides sufficient derating for 100 VAC-derived rails with line surge tolerance; 60 A IFSM handles startup surges without failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R02FL | Same 1 A / 200 V rating; trr = 30 ns (5 ns slower); VF = 0.92 V @ 1 A; TO-277A package (larger footprint) | Higher thermal resistance (RθJA ≈ 90°C/W) limits power density in space-constrained layouts | Prefer ESH1DFSH where SOD-128 footprint and lower VF are critical for thermal management |
| ES1D-E3/54 | 1 A / 200 V; trr = 35 ns; VF = 0.95 V @ 1 A; same SOD-128 package; no AEC-Q101 qualification | Lacks automotive qualification and has higher leakage (IR = 10 µA @ 25°C vs. 5 µA) | Select ESH1DFSH for automotive or high-reliability industrial use requiring AEC-Q101 and tighter IR spec |
Compared with STTH1R02FL and ES1D-E3/54, the ESH1DFSH delivers superior thermal performance (RθJL = 18°C/W), faster recovery (25 ns), lower forward drop, and automotive qualification - making it optimal for high-density, high-reliability 1 A rectification where SOD-128 fit and AEC-Q101 compliance are mandatory.
Availability
ESH1DFSH is available at Aetrix Electronics and suitable for automotive DC-DC converters, high-frequency freewheeling circuits, and industrial SMPS output rectification requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ESH1DFSH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving automotive, industrial, and consumer markets since 1979.
The ESH1DFSH belongs to TSC's AEC-Q101-qualified ultra-fast rectifier family, engineered specifically for high-efficiency, high-reliability power conversion in automotive electrification and industrial switching power supplies.
FAQ
What is the maximum junction temperature rating for the ESH1DFSH?
The ESH1DFSH has a maximum junction temperature (TJMAX) of +175°C, validated per its AEC-Q101 qualification and absolute maximum ratings table. This allows reliable operation in under-hood automotive environments and high-ambient industrial settings. The ESH1DFSH maintains specified electrical performance across its full –55°C to +175°C junction range, with forward voltage decreasing and reverse leakage increasing predictably per datasheet curves.
Is the ESH1DFSH pin-compatible with other SOD-128 rectifiers like ES1D or STTH1R02FL?
The ESH1DFSH uses the standard SOD-128 package with anode and cathode terminals in fixed positions per JEDEC MO-290, making it mechanically compatible with other SOD-128 rectifiers. However, STTH1R02FL uses TO-277A (not SOD-128), so only ES1D-family parts share the same footprint. Electrical differences - including trr, VF, and qualification - require validation before substitution. The ESH1DFSH itself is not guaranteed as a drop-in replacement for any other part.
Does the ESH1DFSH meet automotive reliability standards?
Yes, the ESH1DFSH is explicitly qualified to AEC-Q101 for stress testing including HTGB, H3TRB, TC, and UHAST. It also meets J-STD-020 moisture sensitivity level 1 and JESD201 Class 2 whisker resistance. These qualifications are documented in Taiwan Semiconductor's C2103 specification revision and confirmed on official distributor pages. The ESH1DFSH is intended for automotive powertrain and chassis applications where such certification is mandatory.
What is the reverse recovery time (trr) specification for the ESH1DFSH?
The ESH1DFSH has a maximum reverse recovery time (trr) of 25 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions per its electrical specifications table. This ultra-fast recovery enables high-frequency operation (>200 kHz) with minimal switching loss and reduced EMI. The trr remains stable across temperature - 25 ns max at 25°C and 125°C - ensuring consistent performance in thermally demanding applications.
How is thermal performance characterized for the ESH1DFSH in PCB layout?
Taiwan Semiconductor characterizes the ESH1DFSH's thermal performance on a standardized 5 mm × 5 mm copper pad test board: RθJL = 18°C/W (junction-to-lead), RθJC = 14°C/W (junction-to-case), and RθJA = 72°C/W (junction-to-ambient). For production layouts, designers should replicate the recommended SOD-128 pad dimensions and use internal/external copper planes to approach the 18°C/W lead-path thermal resistance. The ESH1DFSH's low RθJL makes it especially effective when mounted directly to thick copper layers.
ESH1DFSH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-128
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 940 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 175°C
ESH1DFSH FAQ
1.How can I place an order for ESH1DFSH through Aetrix?
Please submit a Request for Quotation (RFQ) for ESH1DFSH 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 ESH1DFSH reliable?
The price and inventory of ESH1DFSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESH1DFSH is usually 5 days.
3.What payment methods are accepted for ESH1DFSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESH1DFSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESH1DFSH?
ESH1DFSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESH1DFSH 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 ESH1DFSH?
For technical support, including ESH1DFSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESH1DFSH requirements.
6.How does Aetrix verify that ESH1DFSH is sourced from the original manufacturer or authorized distributors?
All ESH1DFSH 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 ESH1DFSH meets industry standards.
7.What is the process for return or replacement of ESH1DFSH?
All ESH1DFSH units undergo pre-shipment inspection (PSI). If there is an issue with ESH1DFSH, 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 ESH1DFSH part is unused and in its original packaging.
Return procedure for ESH1DFSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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