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Taiwan Semiconductor Corporation ESH1DMH
- Part No.:
- ESH1DMH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
ESH1DMH.pdf
- Description:
- DIODE GEN PURP 200V 1A MICRO SMA
- Quantity:
- Payment:
- Shipping:
Inventory:5,853
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Product details
Overview
ESH1DMH from Taiwan Semiconductor is a 1A, 200V ultra-fast surface-mount rectifier in Micro SMA package, featuring 25 ns reverse recovery time, 1.50 V max forward voltage at 1 A, and AEC-Q101 qualification for automotive use in DC-DC converters and freewheeling circuits.
For engineers reviewing the ESH1DMH datasheet, ESH1DMH pinout, ESH1DMH application, or ESH1DMH equivalent, key selection factors include its ultra-fast trr (≤25 ns), low-profile height (0.68 mm), JESD201 Class 2 whisker resistance, and suitability for high-frequency snubber and car lighting systems requiring robust thermal performance (RθJA = 92°C/W).
Technical Context
The ESH1DMH is a single-die, unidirectional silicon rectifier optimized for high-frequency switching applications. Its ultra-fast recovery (trr ≤25 ns) minimizes switching loss during turn-off, while the 1.50 V max VF at 1 A supports efficient conduction in compact power stages.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing and J-STD-020 moisture sensitivity level 1. The Micro SMA package enables automated placement and delivers RθJL = 40°C/W for effective lead-to-junction heat transfer under pulsed load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage; defines safe blocking capability in DC-DC flyback or snubber circuits |
| IF | 1 A continuous - Rated average forward current; supports sustained operation in automotive lighting drivers |
| trr | ≤25 ns - Ultra-fast reverse recovery; reduces switching loss and EMI in >100 kHz converters |
| VF (max) | 1.50 V @ 1 A, 25°C - Low conduction loss; improves efficiency in space-constrained 12 V automotive systems |
| RθJA | 92°C/W - Junction-to-ambient thermal resistance; informs heatsinking requirements on standard FR-4 PCBs |
| Junction Temp | –55°C to +150°C - Extended operating range enables under-hood deployment without derating |
| Moisture Sensitivity | Level 1 (J-STD-020) - No bake required before reflow; simplifies SMT assembly flow |
Pinout & Package
Package: Micro SMA - Surface-mount, single-anode/cathode configuration with cathode band marking; 0.68 mm typical height, 0.006 g weight, UL 94V-0 molding compound, matte tin-plated leads.
| 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 energy return path in snubber networks |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements (HTOL, TC, HAST, etc.) |
| Ultra-fast trr ≤25 ns | Enables clean turn-off in 200–500 kHz DC-DC topologies, reducing voltage overshoot and gate drive stress |
| Micro SMA package | 0.68 mm profile allows stacking in ultra-thin modules; compatible with standard 0.5 mm pitch SMT pick-and-place |
| JESD201 Class 2 whisker resistance | Ensures long-term solder joint integrity in vibration-prone automotive environments |
| Halogen-free (IEC 61249-2-21) | Meets automotive OEM environmental compliance mandates without compromising thermal or mechanical performance |
Applications
| DC-DC Converter | Automotive Lighting |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12 V/48 V bidirectional DC-DC converters for mild hybrid systems. IC Role / Device Role / Timing Role: Freewheeling rectifier handling 1 A continuous current with minimal voltage drop and fast recovery. Use Value: 1.50 V max VF and 25 ns trr reduce conduction + switching losses, improving system efficiency by ≥1.2% at 250 kHz. | Use Scenario: LED driver output stage in adaptive front-lighting systems (AFS) with PWM dimming. IC Role / Device Role / Timing Role: Reverse-polarity protection and flyback energy clamp during MOSFET turn-off. Use Value: AEC-Q101 qualification and –55°C to +150°C operation ensure reliability across cold cranking and engine bay thermal cycles. |
| Snubber Network | Freewheeling Diode |
Use Scenario: RCD snubber across primary-side MOSFETs in automotive OBC (on-board charger) PFC stages. IC Role / Device Role / Timing Role: Fast clamping of voltage spikes during MOSFET turn-off using low-capacitance (CJ = 3 pF) junction. Use Value: 3 pF CJ and 25 ns trr minimize snubber power dissipation and preserve timing accuracy in 65–100 kHz operation. | Use Scenario: Inductive load flyback path in 12 V body control modules (BCM) driving solenoids or relays. IC Role / Device Role / Timing Role: Unidirectional current path absorbing stored inductive energy during switch deactivation. Use Value: 15 A IFSM withstands surge currents from 100 mH loads, preventing catastrophic failure during repeated actuation. |
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 = 22 ns (slightly faster); VF = 1.30 V max; DO-214AC package (larger than Micro SMA) | Higher thermal mass suits higher ambient temp designs; less suitable for ultra-thin modules | Prefer when board space allows larger footprint and marginally faster recovery is critical |
| MBR120ESF | Schottky construction; VF = 0.52 V typ but VRRM = 20 V only; not rated for 200 V blocking | Not interchangeable in 200 V applications; limited to ≤24 V systems | Select only for low-VF, low-voltage (<24 V) freewheeling where reverse leakage tolerance permits |
Compared with STTH1R02FL and MBR120ESF, the ESH1DMH uniquely balances AEC-Q101 qualification, Micro SMA form factor, and 200 V/25 ns performance-making it the only choice for space-constrained, high-reliability automotive 200 V rectification where both size and qualification are non-negotiable.
Availability
ESH1DMH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter design, and snubber circuit implementation requiring stable component supply and full traceability.
Supply support for ESH1DMH 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 ESH1DMH belongs to TSC's AEC-Q101-qualified ultra-fast rectifier product line, engineered specifically for high-frequency power conversion in harsh automotive environments where reliability, miniaturization, and thermal resilience are mandatory.
FAQ
What is the maximum junction temperature rating for the ESH1DMH?
The ESH1DMH has a maximum junction temperature (TJ) rating of +150°C, with an operational range from –55°C to +150°C. This rating is validated per AEC-Q101 test conditions and supports under-hood deployment in automotive applications. Thermal design must respect RθJA = 92°C/W to avoid exceeding this limit under full-load conditions. The ESH1DMH maintains specified electrical parameters within this full temperature span.
Is the ESH1DMH pin-compatible with other Micro SMA rectifiers?
The ESH1DMH uses standard Micro SMA mechanical dimensions and polarity marking (cathode band), ensuring physical compatibility with other Micro SMA diodes. However, electrical characteristics-including VF, trr, and IFSM-are specific to the ESH1DMH. Substitution requires verification against target circuit timing and loss budgets. The ESH1DMH is not guaranteed to be functionally interchangeable without design validation.
Does the ESH1DMH meet RoHS and halogen-free requirements?
Yes, the ESH1DMH is RoHS compliant and halogen-free per IEC 61249-2-21. These certifications are confirmed in the official Taiwan Semiconductor datasheet (Version B2110) and verified through material declarations. The device contains no brominated flame retardants or chlorine-based compounds above threshold limits, satisfying global automotive OEM environmental specifications. The ESH1DMH documentation explicitly states both compliance statements.
What is the reverse recovery time (trr) specification for the ESH1DMH?
The ESH1DMH has a maximum reverse recovery time (trr) of 25 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is guaranteed across the full operating temperature range and is critical for minimizing switching loss in high-frequency DC-DC converters. The ESH1DMH datasheet provides characteristic curves confirming trr stability up to 125°C junction temperature.
Can the ESH1DMH be used in non-automotive applications?
Yes, the ESH1DMH is qualified for automotive use (AEC-Q101), but its electrical and thermal specs-1 A/200 V rating, 25 ns trr, and Micro SMA package-are equally applicable in industrial DC-DC supplies, telecom power modules, and LED drivers. Its robustness enhances reliability in any high-reliability, high-frequency rectification role. Designers may leverage the ESH1DMH's automotive-grade margin even outside automotive contexts.
ESH1DMH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 2-SMD, Flat Leads
- 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:
- 1.5 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 200 V
- Capacitance @ Vr, F:
- 3pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Micro SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
ESH1DMH FAQ
1.How can I place an order for ESH1DMH through Aetrix?
Please submit a Request for Quotation (RFQ) for ESH1DMH 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 ESH1DMH reliable?
The price and inventory of ESH1DMH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESH1DMH is usually 5 days.
3.What payment methods are accepted for ESH1DMH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESH1DMH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESH1DMH?
ESH1DMH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESH1DMH 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 ESH1DMH?
For technical support, including ESH1DMH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESH1DMH requirements.
6.How does Aetrix verify that ESH1DMH is sourced from the original manufacturer or authorized distributors?
All ESH1DMH 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 ESH1DMH meets industry standards.
7.What is the process for return or replacement of ESH1DMH?
All ESH1DMH units undergo pre-shipment inspection (PSI). If there is an issue with ESH1DMH, 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 ESH1DMH part is unused and in its original packaging.
Return procedure for ESH1DMH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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