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Taiwan Semiconductor Corporation ES1BLH
- Part No.:
- ES1BLH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-219AB
- Datasheet:
-
ES1BLH.pdf
- Description:
- DIODE GEN PURP 100V 1A SUB SMA
- Quantity:
- Payment:
- Shipping:
Inventory:24,717
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Product details
Overview
ES1BLH from Taiwan Semiconductor is a 1A, 100V super fast surface-mount rectifier diode with glass passivated junction, 35 ns reverse recovery time, and 0.95 V forward voltage at 1 A - used in automotive DC-DC converters and freewheeling paths.
For engineers reviewing the ES1BLH datasheet, ES1BLH pinout, ES1BLH application, or ES1BLH equivalent, key selection criteria include repetitive peak reverse voltage (100 V), thermal resistance (35 °C/W junction-to-lead), AEC-Q101 qualification, moisture sensitivity level 1, and Sub SMA package compatibility with automated placement.
Technical Context
The ES1BLH is a single-die, unidirectional silicon rectifier optimized for high-efficiency switching power supplies. Its super fast recovery (trr ≤ 35 ns) and low VF (0.95 V @ 1 A, 25°C) reduce switching losses and conduction losses simultaneously.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements and features matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. The Sub SMA package supports high-density PCB layouts with UL 94V-0 molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse voltage the device blocks without breakdown; defines usable input voltage range in flyback or buck topologies |
| IF | 1 A continuous - average forward current rating at TA = 75°C; determines thermal derating in compact enclosures |
| trr | 35 ns - measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables operation up to ~3 MHz in snubber-free designs |
| VF | 0.95 V @ 1 A, 25°C - low conduction loss improves efficiency in 12 V automotive systems and LED drivers |
| RθJL | 35 °C/W - junction-to-lead thermal resistance; allows direct heatsinking via PCB copper pour under cathode pad |
| IR | 5 µA @ 100 V, 25°C - low leakage preserves standby power in always-on modules |
Pinout & Package
Package: Sub SMA - surface-mount, low-profile (max height 1.2 mm), cathode-indicated by band, matte tin-plated leads, UL 94V-0 molded compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point during forward conduction | Connected to switch node or inductive source; must withstand IFSM = 30 A surge |
| Cathode | Output current exit point during forward conduction | Typically tied to ground or output rail; serves as primary thermal path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive temperature cycling, humidity bias, and mechanical shock - suitable for under-hood ECUs |
| Glass passivated junction | Enhances long-term reliability against moisture ingress and surface contamination in harsh environments |
| Moisture sensitivity level 1 | No bake requirement before reflow; compatible with standard SMT assembly lines without dry pack handling |
| Low profile Sub SMA | 1.2 mm max height enables use in space-constrained lighting modules and ADAS sensor housings |
Applications
| Automotive DC-DC Converters | LED Headlamp Drivers |
|---|---|
Use Scenario: Step-down conversion from 12 V battery to 5 V/3.3 V for infotainment and body control modules. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck regulators. Use Value: 35 ns trr minimizes reverse recovery loss; 0.95 V VF reduces conduction loss at 1 A load, improving thermal margin. | Use Scenario: Constant-current LED driver for adaptive front lighting systems (AFS). IC Role / Device Role / Timing Role: Snubber diode across MOSFET switches to clamp inductive spikes. Use Value: 100 V VRRM safely absorbs transients up to ISO 7637-2 Pulse 5a; glass passivation ensures stability over 15-year vehicle life. |
| Engine Control Unit Power Rails | Start-Stop System Auxiliary Supplies |
Use Scenario: Input rectification and hold-up in 5 V microcontroller power rails exposed to load dump events. IC Role / Device Role / Timing Role: Primary rectifier in linear post-regulator or LDO input stage. Use Value: AEC-Q101 qualification and -55°C to +150°C TJ range ensure operation during cold cranking and hot soak conditions. | Use Scenario: Auxiliary 3.3 V supply for CAN transceivers and sensors during engine-off battery-saver mode. IC Role / Device Role / Timing Role: Reverse polarity protection and back-bias blocking diode. Use Value: 5 µA IR at 25°C limits quiescent current drain; Sub SMA footprint fits tight BOM space in junction box modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR110T3G | Same 1 A / 100 V rating; trr = 50 ns (slower); VF = 0.93 V; TO-277 package (larger footprint) | Not AEC-Q101 qualified; higher RθJA (100 °C/W); unsuitable for under-hood deployment | Select when cost is prioritized over automotive qualification and board space is not constrained. |
| Vishay VS-ES1BHM3/5BT | Identical Sub SMA package; AEC-Q101 qualified; trr = 35 ns; VF = 0.97 V; IR = 10 µA @ 100 V | Higher leakage may impact ultra-low-power sleep modes in telematics units | Preferred drop-in alternative where Vishay sourcing preference or dual-sourcing strategy applies. |
Compared with MUR110T3G and VS-ES1BHM3/5BT, the ES1BLH offers best-in-class thermal resistance (35 °C/W vs. ≥65 °C/W), enabling higher ambient operation in sealed ECU housings without forced airflow.
Availability
ES1BLH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED headlamp drivers, and engine control unit power rails requiring stable component supply across multi-year production cycles.
Supply support for ES1BLH 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 ES1xLH series is part of TSC's AEC-Q101-qualified rectifier platform, engineered specifically for high-reliability automotive power conversion where fast recovery, low VF, and robust thermal performance are critical.
FAQ
What is the maximum junction temperature rating for the ES1BLH?
The ES1BLH has a maximum junction temperature (TJ MAX) of +150°C, verified per AEC-Q101 thermal cycling tests. This rating allows reliable operation in under-hood environments where ambient temperatures reach 125°C, provided PCB thermal design maintains junction-to-lead resistance at or below 35 °C/W. The ES1BLH datasheet specifies derating curves down to zero current at 150°C ambient.
Is the ES1BLH suitable for use in automotive start-stop systems?
Yes, the ES1BLH is explicitly qualified to AEC-Q101 and rated for -55°C to +150°C operation, making it suitable for start-stop system auxiliary supplies. Its 100 V VRRM withstands ISO 7637-2 load dump transients, and its 5 µA reverse leakage at 25°C minimizes battery drain during extended engine-off periods - key requirements for ES1BLH deployment in junction box modules.
What does the marking code 'EBL' on the ES1BLH indicate?
The marking code 'EBL' laser-etched on the ES1BLH case identifies it as the 100 V variant within the ES1xLH family (A=50 V, B=100 V, C=150 V, etc.). This code is standardized per TSC's ordering documentation and matches the 'ES1BLH' orderable part number. It appears adjacent to the green compound indicator (G) and date code on the Sub SMA package top surface.
How does the ES1BLH's thermal performance compare to standard SMA rectifiers?
The ES1BLH achieves 35 °C/W junction-to-lead thermal resistance - significantly lower than typical SMA-packaged rectifiers (≥60 °C/W) due to optimized die attach and leadframe design. This enables higher sustained current in thermally constrained layouts. For example, at 1 A and 75°C ambient, the ES1BLH junction stays ~45°C cooler than a generic SMA rectifier with RθJL = 65 °C/W, directly extending lifetime in automotive applications.
Can the ES1BLH replace the ES1ALH in an existing design?
Yes, the ES1BLH is a direct replacement for ES1ALH in most cases: both share identical Sub SMA package, pinout, thermal characteristics, and AEC-Q101 qualification. The only functional difference is VRRM - 100 V for ES1BLH versus 50 V for ES1ALH - so replacement is safe only if the circuit's maximum reverse voltage remains below 100 V. No PCB or layout changes are required for ES1BLH substitution.
ES1BLH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-219AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 100 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Sub SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
ES1BLH FAQ
1.How can I place an order for ES1BLH through Aetrix?
Please submit a Request for Quotation (RFQ) for ES1BLH 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 ES1BLH reliable?
The price and inventory of ES1BLH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES1BLH is usually 5 days.
3.What payment methods are accepted for ES1BLH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES1BLH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ES1BLH?
ES1BLH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ES1BLH 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 ES1BLH?
For technical support, including ES1BLH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES1BLH requirements.
6.How does Aetrix verify that ES1BLH is sourced from the original manufacturer or authorized distributors?
All ES1BLH 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 ES1BLH meets industry standards.
7.What is the process for return or replacement of ES1BLH?
All ES1BLH units undergo pre-shipment inspection (PSI). If there is an issue with ES1BLH, 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 ES1BLH part is unused and in its original packaging.
Return procedure for ES1BLH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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