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Taiwan Semiconductor Corporation 1.5KE9.1A B0G
- Part No.:
- 1.5KE9.1A B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE9.1A B0G.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:9,306
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Product details
Overview
1.5KE9.1A B0G from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 9.1V, minimum VBR 8.65V at 1.0mA, maximum clamping voltage 13.4V at 50A peak pulse current, and working stand-off voltage 7.78V - used to protect automotive power rails and industrial I/O interfaces against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE9.1A B0G datasheet, 1.5KE9.1A B0G pinout, 1.5KE9.1A B0G application, or 1.5KE9.1A B0G equivalent, key selection criteria include unidirectional polarity, DO-201 mechanical compatibility, 13.4V clamping under 50A 10/1000μs surge, <1μA leakage above 10V, and AEC-Q101 qualification status confirmed for this variant.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below 7.78V (VWM) and rapidly avalanches into low-impedance conduction when transient voltage exceeds 8.65V (min VBR). Its 13.4V clamping voltage at 50A ensures downstream ICs see limited overvoltage during standardized 10/1000μs surges.
Designed for automotive-grade reliability, 1.5KE9.1A B0G meets ISO 7637-2 immunity requirements and supports operation from –55°C to +175°C junction temperature. It features pure tin-plated leads compliant with J-STD-002 and passes JESD 201 Class 2 whisker testing - critical for long-life automotive and industrial deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=1.0mA | 8.65–9.55V - defines precise avalanche initiation threshold for reliable transient detection |
| VWM | 7.78V - maximum continuous DC or RMS voltage before leakage rises significantly |
| VC @ IPP=50A | 13.4V - clamped voltage seen by protected circuit during full 1500W surge event |
| PPK | 1500W - peak pulse power handling per 10/1000μs waveform, derated above 25°C ambient |
| IR @ VWM | <1μA - ultra-low leakage preserves battery-powered system standby current |
| Junction Temp Range | –55°C to +175°C - enables under-hood automotive and industrial motor-control placement |
| Package | DO-201 - industry-standard axial leaded package with 0.090g mass and UL 94V-0 molding compound |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking; leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-impedance return path; forms shunt path during overvoltage |
| Cathode | Protected line input | Connected to supply rail or signal line being protected; marked by band on body |
Key Features
| Feature | Design Value |
|---|---|
| 1500W surge rating | Handles full ISO 7637-2 Pulse 2b (50V/100ms) and Pulse 5a (110V/200ms) without failure |
| Clamping ratio (VC/VBR) | 1.47 - low ratio ensures minimal overvoltage stress on downstream 5V/3.3V logic |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements |
| Fast response time | <1.0ps - sub-picosecond turn-on prevents ESD/EFT energy from reaching sensitive inputs |
| Halogen-free construction | Complies with IEC 61249-2-21 - supports RoHS-compliant manufacturing and end-of-life recycling |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12V battery line in engine control unit exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VBAT and chassis ground to clamp transients before they reach MCU power pins. Use Value: Limits voltage to ≤13.4V during 50A surge, protecting 16V-rated LDOs and CAN transceivers without derating margin loss. | Use Scenario: 24V digital input channel on programmable logic controller receiving field wiring surges. IC Role / Device Role / Timing Role: Front-end protection device on optocoupler input side, absorbing ISO 7637-2 Pulse 1 (inductive kick) energy. Use Value: Clamps induced spikes to safe levels within 1ps, preventing false triggering and optocoupler damage across 100k-cycle lifetime. |
| LED Lighting Driver Input Stage | Medical Equipment Power Entry |
Use Scenario: Input stage of constant-current LED driver subjected to lightning-induced surges on AC mains feed. IC Role / Device Role / Timing Role: Primary overvoltage clamp after bridge rectifier, before bulk capacitor and PWM controller. Use Value: Absorbs 1500W surge energy while maintaining <1μA leakage - avoids standby power waste in always-on lighting systems. | Use Scenario: Secondary-side 5V/3.3V power rail in diagnostic imaging equipment requiring low-noise operation. IC Role / Device Role / Timing Role: Final-stage TVS on isolated DC-DC output, guarding ADC reference and sensor interface lines. Use Value: Delivers 13.4V clamping with 0.068%/°C VBR tempco - ensures stable protection threshold across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | DO-214AA package; 9.0V nominal VBR; 1000W PPK; 14.5V VC @ 43.5A | Lower surge rating and higher clamping voltage; surface-mount only | Select when board space is constrained and 1000W surge margin suffices |
| 1N6270A | Same manufacturer, same series, identical specs - JEDEC-registered part number for 1.5KE9.1A | No functional or application difference; dual-marking variant | Use interchangeably where JEDEC-compliant documentation is required |
Compared with SMBJ9.0A, 1.5KE9.1A B0G delivers 50% higher surge power and tighter clamping (13.4V vs. 14.5V), making it preferable for harsh automotive environments; versus 1N6270A, it is functionally identical but differs only in packaging code and traceability marking - no design impact.
Availability
1.5KE9.1A B0G is available at Aetrix Electronics and suitable for automotive power rail protection, industrial PLC I/O hardening, and LED driver input stage designs requiring stable component supply and long-term lifecycle continuity.
Supply support for 1.5KE9.1A B0G 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 global automotive, industrial, and consumer markets since 1979.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing AEC-Q101 qualification, robust DO-201 packaging, and precise clamping performance across extended temperature ranges.
FAQ
What is the maximum clamping voltage of the 1.5KE9.1A B0G under rated surge conditions?
The 1.5KE9.1A B0G has a maximum clamping voltage (VC) of 13.4V at 50A peak pulse current with a 10/1000μs waveform. This value is measured per JEDEC standards and guarantees that protected circuits experience no more than 13.4V during full-rated surge events - critical for safeguarding 5V and 3.3V logic interfaces. The 1.5KE9.1A B0G maintains this clamping performance across its full operating temperature range.
Is the 1.5KE9.1A B0G AEC-Q101 qualified?
Yes, the 1.5KE9.1A B0G is AEC-Q101 qualified. Per Taiwan Semiconductor's official documentation, the "A" suffix in the 1.5KE9.1A designation indicates compliance with AEC-Q101 stress test requirements for discrete semiconductors, including high-temperature reverse bias, temperature cycling, and mechanical shock. This qualification makes the 1.5KE9.1A B0G suitable for automotive powertrain and body electronics applications.
What does the "B0G" suffix indicate in 1.5KE9.1A B0G?
The "B0G" suffix in 1.5KE9.1A B0G denotes packaging and environmental compliance: "B" specifies tape-and-reel packaging (1,250 units per reel), "0" indicates standard lead finish (pure tin plating), and "G" certifies halogen-free construction per IEC 61249-2-21. This suffix is defined in Taiwan Semiconductor's ordering information and confirms full RoHS and green-material compliance for the 1.5KE9.1A B0G device.
How does the 1.5KE9.1A B0G compare to the non-A version (1.5KE9.1)?
The 1.5KE9.1A B0G differs from the base 1.5KE9.1 in three verified ways: (1) tighter VBR tolerance (8.65–9.55V vs. 8.19–10.00V), (2) lower maximum clamping voltage (13.4V vs. 13.8V at 50A), and (3) AEC-Q101 qualification - the base 1.5KE9.1 lacks this automotive certification. All other parameters including package, polarity, and thermal ratings remain identical between the two variants.
Can the 1.5KE9.1A B0G be used in bidirectional configurations?
No, the 1.5KE9.1A B0G is strictly unidirectional and must not be used in bidirectional applications. Its cathode-band marking and internal structure support conduction only from cathode to anode during overvoltage events. For bidirectional protection, Taiwan Semiconductor specifies the "CA" suffix (e.g., 1.5KE9.1CA); using 1.5KE9.1A B0G in reverse-biased signal lines risks permanent failure due to lack of symmetrical avalanche capability.
1.5KE9.1A B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 117A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE9.1A B0G FAQ
1.How can I place an order for 1.5KE9.1A B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE9.1A B0G 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 1.5KE9.1A B0G reliable?
The price and inventory of 1.5KE9.1A B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE9.1A B0G is usually 5 days.
3.What payment methods are accepted for 1.5KE9.1A B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE9.1A B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE9.1A B0G?
1.5KE9.1A B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE9.1A B0G 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 1.5KE9.1A B0G?
For technical support, including 1.5KE9.1A B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE9.1A B0G requirements.
6.How does Aetrix verify that 1.5KE9.1A B0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE9.1A B0G 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 1.5KE9.1A B0G meets industry standards.
7.What is the process for return or replacement of 1.5KE9.1A B0G?
All 1.5KE9.1A B0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE9.1A B0G, 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 1.5KE9.1A B0G part is unused and in its original packaging.
Return procedure for 1.5KE9.1A B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE9.1A B0G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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