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Taiwan Semiconductor Corporation ESH1BH
- Part No.:
- ESH1BH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
ESH1BH.pdf
- Description:
- 15NS, 1A, 100V, ULTRA FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
ESH1BH from Taiwan Semiconductor is a 1A, 100V ultra-fast surface-mount rectifier diode in DO-214AC (SMA) package, featuring 15 ns reverse recovery time, 0.9 V forward voltage at 1 A, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or snubber diode in high-frequency DC/DC converters and car lighting systems.
For engineers reviewing the ESH1BH datasheet, ESH1BH pinout, ESH1BH application, or ESH1BH equivalent, key selection criteria include its 100 V repetitive peak reverse voltage, 30 A surge rating, -55°C to +175°C junction temperature range, and moisture sensitivity level 1 compliance for automated SMT assembly.
Technical Context
The ESH1BH is a single-die, glass-passivated silicon PN junction rectifier optimized for ultra-fast switching. Its 15 ns trr and low 0.9 V VF at 1 A enable high-efficiency operation in 100–500 kHz DC/DC topologies where reverse recovery losses must be minimized.
Designed for automotive environments, the ESH1BH meets AEC-Q101 stress test requirements and features matte tin-plated leads compliant with J-STD-002 solderability, JESD201 Class 2 whisker resistance, and UL 94V-0 molding compound - all verified under TA = 25°C unless otherwise specified.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum non-repetitive reverse voltage the device blocks without breakdown; defines safe operating limit in snubber or freewheeling circuits. |
| IF | 1 A continuous - Average forward current rating at TA = 25°C; derates linearly above 25°C per Fig.1. |
| trr | 15 ns - Measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables use in >300 kHz switching applications with minimal switching loss. |
| VF | 0.9 V max at IF = 1 A, TJ = 25°C - Low conduction loss improves power stage efficiency in compact DC/DC designs. |
| IFSM | 30 A - Peak non-repetitive surge current capability (8.3 ms half-sine); supports inrush and fault-current handling in automotive modules. |
| TJ max | +175°C - Maximum junction temperature; allows operation in under-hood environments with minimal thermal derating. |
| RθJA | 85°C/W - Junction-to-ambient thermal resistance on standard FR-4 PCB; informs heatsinking requirements for sustained 1 A load. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, low-profile plastic case with cathode band polarity marking. Weight: 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); requires adequate copper area for thermal dissipation. |
| Cathode | Forward current exit / reverse voltage blocking terminal | Marked by visible band; connects to higher-potential rail (e.g., output capacitor positive); critical for correct orientation in automated placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements - enables use in engine control, lighting, and ADAS modules without additional qualification. |
| Glass passivated junction | Enhances long-term reliability and humidity resistance versus epoxy-passivated alternatives; reduces risk of parametric drift in humid under-hood conditions. |
| Moisture sensitivity level 1 | No bake preconditioning required before reflow; compatible with standard SMT lines without floor-life management overhead. |
| Ultra-fast 15 ns trr | Minimizes reverse recovery charge (Qrr) and associated switching losses in high-frequency converters, improving system efficiency over standard fast recovery diodes. |
| DO-214AC (SMA) package | Industry-standard footprint with 2.5 mm lead spacing; supports pick-and-place compatibility and IPC-7351-compliant pad layout per datasheet Fig.5. |
Applications
| DC/DC Converter | Automotive Lighting |
|---|---|
Use Scenario: High-frequency synchronous buck converter in 12 V automotive subsystems (e.g., infotainment power supply). IC Role / Device Role / Timing Role: Freewheeling diode replacing body diode of low-side MOSFET to reduce conduction loss and improve light-load efficiency. Use Value: 15 ns trr and 0.9 V VF minimize switching and conduction losses, enabling >92% efficiency at 300 kHz switching frequency. | Use Scenario: LED headlamp driver with PWM dimming and transient protection. IC Role / Device Role / Timing Role: Snubber diode across inductive ballast or relay coil to suppress voltage spikes during turn-off. Use Value: 100 V VRRM and 30 A IFSM withstand load dump transients up to ISO 7637-2 Pulse 5a, ensuring robustness in 24 V commercial vehicle systems. |
| Snubber Circuit | Freewheeling Application |
Use Scenario: RCD snubber network in flyback transformer primary side for EMI reduction and MOSFET voltage clamping. IC Role / Device Role / Timing Role: Fast-recovery clamp diode that conducts only during leakage inductance energy transfer phase. Use Value: Low Qrr and 15 ns trr ensure precise timing alignment with MOSFET turn-off edge, preventing voltage overshoot beyond 100 V rating. | Use Scenario: Inductive load driver (e.g., solenoid, fuel injector) in engine control unit. IC Role / Device Role / Timing Role: Freewheeling path for stored magnetic energy when drive transistor turns off. Use Value: Glass passivation and -55°C to +175°C TJ range maintain stable VF and leakage across full automotive ambient range, avoiding thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR110E | Same DO-214AC package, 100 V VRRM, but 25 ns trr (vs. 15 ns) and 1.15 V VF at 1 A. | Higher VF increases conduction loss; longer trr limits usable frequency to ≤200 kHz in high-efficiency designs. | Select when cost priority outweighs 15 ns speed advantage and 0.25 V VF reduction. |
| Vishay VS-1EH01-M3/5AT | DO-214AC, 100 V, 15 ns trr, but AEC-Q101 not claimed; TJ max = +150°C (vs. +175°C). | Lacks automotive qualification; unsuitable for under-hood applications requiring AEC-Q101 compliance. | Acceptable for industrial DC/DC where extended temperature range and automotive qualification are not required. |
Compared with MUR110E and VS-1EH01-M3/5AT, the ESH1BH delivers superior high-frequency performance due to its 15 ns trr and lower VF, while its AEC-Q101 rating and +175°C TJ max uniquely support demanding automotive under-hood deployments without thermal or qualification compromise.
Availability
ESH1BH is available at Aetrix Electronics and suitable for automotive lighting, DC/DC converter, and snubber applications requiring stable component supply, AEC-Q101 compliance, and consistent DO-214AC (SMA) packaging.
Supply support for ESH1BH 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, specializing in power devices, rectifiers, and protection components.
The ESH1BH belongs to TSC's AEC-Q101-qualified ultra-fast rectifier product line, engineered specifically for high-reliability automotive power conversion and transient suppression where speed, thermal robustness, and process consistency are critical.
FAQ
What is the maximum repetitive peak reverse voltage rating for ESH1BH?
The ESH1BH has a maximum repetitive peak reverse voltage (VRRM) of 100 V, as confirmed in the Absolute Maximum Ratings table. This rating defines the highest reverse voltage the diode can block continuously without breakdown under normal operating conditions. Exceeding 100 V risks avalanche failure. The ESH1BH is part of a family where ESH1CH and ESH1DH offer 150 V and 200 V ratings respectively, but ESH1BH itself is strictly rated at 100 V.
Is ESH1BH qualified for automotive applications?
Yes, the ESH1BH is explicitly AEC-Q101 qualified per the manufacturer's documentation, confirming it has passed stress tests for temperature cycling, high-temperature operating life, and mechanical shock required for automotive electronics. This qualification, combined with its -55°C to +175°C junction temperature range and moisture sensitivity level 1, makes ESH1BH suitable for under-hood and safety-critical automotive subsystems such as lighting and engine control modules.
What is the reverse recovery time (trr) of ESH1BH and how is it measured?
The reverse recovery time (trr) of ESH1BH is 15 ns maximum, measured under the conditions IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, as specified in the Electrical Specifications table. This value reflects the time required for the diode to transition from forward conduction to reverse blocking state. The ESH1BH's 15 ns trr is validated using the test circuit shown in Figure 6 of the datasheet and enables efficient operation in high-frequency switching applications where fast recovery minimizes switching losses.
Does ESH1BH have a halogen-free construction?
Yes, the ESH1BH uses halogen-free molding compound in accordance with IEC 61249-2-21, as stated in the FEATURES section. This ensures compliance with environmental regulations and eliminates brominated flame retardants commonly found in legacy packaging materials. The halogen-free status applies to the entire device, including encapsulant and leadframe, and is verified per standardized material testing protocols used by Taiwan Semiconductor.
What is the thermal resistance from junction to ambient (RθJA) for ESH1BH?
The junction-to-ambient thermal resistance (RθJA) for ESH1BH is 85°C/W, measured on a standard FR-4 printed circuit board with minimum copper pad area, as listed in the Thermal Performance table. This value guides thermal design by indicating how much temperature rise occurs per watt of power dissipated. For example, at 1 A forward current and 0.9 V forward drop, the ESH1BH dissipates 0.9 W, resulting in ~76.5°C rise above ambient - a critical input for ensuring TJ remains within the -55°C to +175°C limit.
ESH1BH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 15 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 100 V
- Capacitance @ Vr, F:
- 16pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 175°C
ESH1BH FAQ
1.How can I place an order for ESH1BH through Aetrix?
Please submit a Request for Quotation (RFQ) for ESH1BH 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 ESH1BH reliable?
The price and inventory of ESH1BH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESH1BH is usually 5 days.
3.What payment methods are accepted for ESH1BH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESH1BH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESH1BH?
ESH1BH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESH1BH 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 ESH1BH?
For technical support, including ESH1BH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESH1BH requirements.
6.How does Aetrix verify that ESH1BH is sourced from the original manufacturer or authorized distributors?
All ESH1BH 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 ESH1BH meets industry standards.
7.What is the process for return or replacement of ESH1BH?
All ESH1BH units undergo pre-shipment inspection (PSI). If there is an issue with ESH1BH, 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 ESH1BH part is unused and in its original packaging.
Return procedure for ESH1BH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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