My Inquiry
My Account
Taiwan Semiconductor Corporation ES1BALH
- Part No.:
- ES1BALH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
ES1BALH.pdf
- Description:
- 35NS, 1A, 100V, SUPER FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:14,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ES1BALH from Taiwan Semiconductor is a 1A, 100V super fast surface-mount rectifier diode in a Thin SMA package, featuring 35ns reverse recovery time, 0.85V forward voltage at 1.0A/25°C, and AEC-Q101 qualification for automotive use. It serves as a freewheeling or snubber diode in DC/DC converters where low conduction loss and fast switching are required.
For engineers reviewing the ES1BALH datasheet, ES1BALH pinout, ES1BALH application, or ES1BALH equivalent, key selection criteria include its 100V VRRM, 30A IFSM surge rating, -55°C to +150°C operating junction temperature, glass-passivated junction, and J-STD-020 Level 1 moisture sensitivity.
Technical Context
The ES1BALH is a single-die, unidirectional silicon rectifier optimized for high-frequency switching applications. Its 35ns reverse recovery time and 18pF junction capacitance at 1MHz/4V enable efficient operation in 100–500kHz DC/DC topologies.
Thermal performance is defined by RθJL = 28°C/W and RθJA = 67°C/W on a 5mm × 5mm Cu pad PCB. The device uses a glass-passivated chip junction and matte tin-plated leads compliant with J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse voltage before breakdown; sets usable input voltage range in buck or flyback designs |
| IF | 1 A - Continuous forward current rating; defines steady-state power handling in freewheeling paths |
| trr | 35 ns - Reverse recovery time; enables high-frequency switching with minimal switching loss and EMI |
| VF @ 1A, 25°C | 0.85 V - Forward voltage drop; determines conduction loss (0.85W at 1A) and thermal load |
| IFSM | 30 A - Non-repetitive surge current (8.3ms half-sine); supports inrush and transient overload tolerance |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood automotive environments |
| CJ | 18 pF - Junction capacitance at 1MHz/4V; impacts high-frequency impedance and snubber tuning |
Pinout & Package
Package: Thin SMA (DO-214AC), surface-mount, low-profile, cathode indicated by band. Weight: 0.029g. Meets UL 94V-0, JESD201 Class 2 whisker resistance, and J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); must handle full IF and IFSM |
| Cathode | Forward current exit / reverse blocking terminal | Connected to higher-potential rail (e.g., output capacitor positive); polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and UHAST - suitable for under-hood ECUs |
| Glass-passivated junction | Enhances long-term stability and humidity resistance vs. epoxy-passivated alternatives |
| Low profile Thin SMA package | Enables compact board layout and compatibility with automated SMT placement equipment |
| Level 1 moisture sensitivity | No bake requirement prior to reflow; simplifies manufacturing and reduces process risk |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS directives for environmentally constrained applications |
Applications
| Automotive Power Supplies | Industrial DC/DC Converters |
|---|---|
Use Scenario: 12V-to-5V buck converter in engine control unit (ECU) with 250kHz switching frequency. IC Role / Device Role / Timing Role: Freewheeling diode providing current path during high-side MOSFET off-time. Use Value: 35ns trr minimizes reverse recovery loss and improves efficiency over standard FRDs; AEC-Q101 ensures lifetime reliability. | Use Scenario: Isolated flyback auxiliary supply in PLC power module operating at 100–300kHz. IC Role / Device Role / Timing Role: Output rectifier converting transformer secondary AC to regulated DC. Use Value: 0.85V VF at 1A reduces conduction loss; 150°C TJmax supports operation near heat-generating logic ICs. |
| Snubber Networks | High-Frequency SMPS |
Use Scenario: RCD snubber across MOSFET drain-source in 48V telecom DC/DC brick. IC Role / Device Role / Timing Role: Fast recovery clamp diode absorbing turn-off voltage spikes. Use Value: 35ns trr and 100V VRRM ensure rapid clamping without oscillation or secondary breakdown. | Use Scenario: Synchronous rectification assist diode in multi-phase VRM for server CPU power delivery. IC Role / Device Role / Timing Role: Backup or dead-time conduction path when synchronous FET is off. Use Value: Low CJ (18pF) limits capacitive coupling noise; Thin SMA footprint fits tight layout constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor ES1B | VRRM = 100V, trr = 35ns, VF = 0.85V @ 1A, same Thin SMA package but not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial only | Select ES1B only if AEC-Q101 is not required and cost is prioritized |
| Vishay VS-1EWH01-M3/5AT | VRRM = 100V, trr = 25ns, VF = 0.92V @ 1A, SMA package, AEC-Q101 qualified | 25ns faster recovery but higher VF; slightly larger thermal resistance (RθJA = 75°C/W) | Choose for ultra-fast switching priority where 0.07V higher VF is acceptable |
Compared with ES1B and VS-1EWH01-M3/5AT, the ES1BALH uniquely balances AEC-Q101 compliance, 35ns recovery, and 0.85V forward drop in a standardized Thin SMA footprint-making it optimal for cost-sensitive, thermally constrained automotive DC/DC designs requiring proven qualification.
Availability
ES1BALH is available at Aetrix Electronics and suitable for automotive power supplies, industrial DC/DC converters, snubber networks, and high-frequency SMPS requiring stable component supply and AEC-Q101 assurance.
Supply support for ES1BALH 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 ES1BALH belongs to TSC's ES1xALH super fast rectifier family, designed specifically for high-efficiency, high-reliability switching power conversion in space-constrained and thermally demanding environments.
FAQ
What is the maximum junction temperature rating for ES1BALH?
The ES1BALH has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official datasheet. This rating enables reliable operation in under-hood automotive environments and near heat-generating components. Derating curves confirm 1A continuous current is sustainable up to 125°C ambient when mounted on a 5mm × 5mm copper pad. Exceeding +150°C risks permanent parametric shift or failure.
Is ES1BALH pin-compatible with other devices in the ES1xALH series?
Yes, all ES1xALH variants-including ES1BALH, ES1DALH, ES1GALH, and ES1JALH-share identical Thin SMA package dimensions, pinout, and solder pad layout. The only differences are VRRM (100V to 600V), forward voltage, and junction capacitance. No PCB redesign is needed when upgrading voltage rating within the series, provided thermal and electrical margins remain valid.
Does ES1BALH require baking before reflow soldering?
No, ES1BALH has a J-STD-020 moisture sensitivity level (MSL) of Level 1, meaning it is not moisture-sensitive and does not require dry-packaging or pre-reflow baking. It can be stored indefinitely at ambient conditions and placed directly into standard lead-free reflow profiles without preconditioning-reducing manufacturing complexity and floor-life concerns.
What is the reverse recovery time (trr) of ES1BALH and how is it measured?
The ES1BALH reverse recovery time is 35ns, measured under conditions of IF = 0.5A, IR = 1.0A, and Irr = 0.25A per the datasheet's Electrical Specifications table. This value reflects the time required for minority carriers to clear after forward conduction, directly impacting switching loss and EMI in high-frequency converters. It is validated using standardized pulse test waveforms.
Can ES1BALH be used as a direct replacement for standard FR107 diodes?
No-ES1BALH is not a direct replacement for FR107. While both are 1A, 1000V-rated rectifiers, FR107 is a general-purpose fast recovery diode (trr ≈ 500ns) in DO-41 package, whereas ES1BALH is a super fast rectifier (trr = 35ns) in Thin SMA. Voltage rating mismatch (100V vs. 1000V) and package incompatibility make substitution unsafe without circuit validation.
ES1BALH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- 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:
- 950 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 100 V
- Capacitance @ Vr, F:
- 18pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
ES1BALH FAQ
1.How can I place an order for ES1BALH through Aetrix?
Please submit a Request for Quotation (RFQ) for ES1BALH 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 ES1BALH reliable?
The price and inventory of ES1BALH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES1BALH is usually 5 days.
3.What payment methods are accepted for ES1BALH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES1BALH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ES1BALH?
ES1BALH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ES1BALH 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 ES1BALH?
For technical support, including ES1BALH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES1BALH requirements.
6.How does Aetrix verify that ES1BALH is sourced from the original manufacturer or authorized distributors?
All ES1BALH 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 ES1BALH meets industry standards.
7.What is the process for return or replacement of ES1BALH?
All ES1BALH units undergo pre-shipment inspection (PSI). If there is an issue with ES1BALH, 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 ES1BALH part is unused and in its original packaging.
Return procedure for ES1BALH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ES1BALH Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
