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Vishay General Semiconductor - Diodes Division 1N6288A-E3/51
- Part No.:
- 1N6288A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6288A-E3/51.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,358
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Product details
Overview
1N6288A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of sensitive electronics. It features a 51 V breakdown voltage (VBR = 48.5–53.6 V at 1.0 mA), 43.6 V maximum standoff voltage (VWM), 70.1 V clamping voltage (VC) at 21.4 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used in DC power rail and signal line protection for industrial motor drives and automotive ECUs.
For engineers reviewing the 1N6288A-E3/51 datasheet, 1N6288A-E3/51 pinout, 1N6288A-E3/51 application, or 1N6288A-E3/51 equivalent, this part delivers verified transient suppression performance in high-reliability unidirectional configurations with RoHS-compliant matte tin-plated leads, JEDEC 1.5KE package, and AEC-Q101 qualification availability (HE3 variant).
Technical Context
This device operates as a silicon avalanche diode optimized for fast-response clamping of transient overvoltages. Its glass-passivated junction enables stable breakdown behavior, low incremental surge resistance (confirmed by VC – VBR ≤ 21.6 V at rated IPPM), and thermal stability up to TJ = 175 °C. The unidirectional polarity is marked by a cathode band on the epoxy body.
It complies with UL 94 V-0 flammability standards and supports soldering per J-STD-002 and JESD 22-B102. The 1.5KE case style provides mechanical robustness for through-hole mounting, with RθJA = 75 °C/W and RθJL = 15.4 °C/W enabling effective thermal management in constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 48.5 V / 53.6 V at 1.0 mA - defines precise clamping onset threshold for reliable overvoltage detection |
| VWM | 43.6 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 70.1 V at 21.4 A - limits downstream component stress during 10/1000 µs transients |
| PPPM | 1500 W - sustains single-pulse surges without degradation under standard lightning-surge test conditions |
| IFSM | 200 A (8.3 ms half-sine) - withstands high-energy inrush events in power supply input stages |
| TJ range | –55 °C to +175 °C - supports operation in under-hood automotive and industrial ambient environments |
| Package | JEDEC 1.5KE - standardized axial-leaded through-hole package with 0.375" lead length for mechanical reliability |
Pinout & Package
1N6288A-E3/51 uses the JEDEC 1.5KE axial-leaded package: molded epoxy body over passivated junction, UL 94 V-0 compliant, matte tin-plated leads. Cathode is marked by a color band on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side return path | Enables bidirectional clamping only when paired with complementary device; not used alone for bidirectional protection |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., +12 V rail or signal trace) | Reverse-biased during normal operation; avalanches into conduction when VLINE > VBR, shunting surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5%) and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial equipment interfaces |
| Clamping ratio (VC/VBR) ≈ 1.45 | Minimizes voltage overshoot during transients - critical for protecting 5 V or 3.3 V logic interfaces downstream |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, enabling use in high-reliability commercial and automotive applications |
| Low leakage (< 1.0 µA @ VWM) | Prevents standby power loss and false triggering in always-on sensor or communication circuits |
Applications
| Automotive Power Distribution | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Protection of 12 V battery-fed control circuits against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary unidirectional TVS placed between fused +12 V rail and ground, clamping spikes within nanoseconds. Use Value: Limits voltage excursion to ≤70.1 V during 100 A/100 ms load dump events, preventing damage to MCU power regulators and CAN transceivers. |
Use Scenario: Input protection for 24 V digital input channels exposed to field wiring in factory automation systems. IC Role / Device Role / Timing Role: Standoff clamp on dry-contact or PNP-sourced inputs, absorbing inductive kickback from solenoid drivers. Use Value: Withstands repetitive 1500 W surges while maintaining <1 µA leakage at 24 V nominal, ensuring noise-free logic level detection. |
| DC Motor Drive Control Boards | Telecom Power Supply Front-Ends |
Use Scenario: Snubbing voltage spikes generated during MOSFET switching in H-bridge motor controllers. IC Role / Device Role / Timing Role: Unidirectional TVS across DC bus rails (+VDD to GND), triggered only during overvoltage faults. Use Value: Clamps 10/1000 µs transients to 70.1 V before gate drivers or bootstrap capacitors experience overstress. |
Use Scenario: Secondary-side transient suppression on +48 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Final-stage overvoltage guard before DC-DC converters, complementing upstream MOVs and filters. Use Value: Provides sub-nanosecond response and precise 43.6 V standoff, avoiding nuisance tripping while blocking lightning-induced surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | DO-214AA (SMB) surface-mount package; same VBR (48.5–53.6 V), lower PPPM = 600 W | Used where board space is constrained and reflow assembly is preferred over through-hole | Select SMBJ51A for compact designs requiring automated placement; verify thermal relief and trace width for 600 W dissipation |
| 1.5KE51A | Identical electrical specs and 1.5KE package; differs only in ordering suffix (E3/51 vs. E3/54); same RoHS/commercial grade | No functional difference - interchangeable in all 1N6288A-E3/51 applications with identical layout and sourcing | 1.5KE51A is a direct form-fit-function replacement; no design change required if lead time or packaging preference favors that variant |
Compared with SMBJ51A, 1N6288A-E3/51 offers 2.5× higher surge power handling and proven axial-leaded mechanical robustness for high-vibration environments; compared with 1.5KE51A, it shares identical performance but differs only in tape-and-reel packaging configuration (51 vs. 54), making them functionally indistinguishable in circuit operation.
Availability
1N6288A-E3/51 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O hardening, and telecom power front-end surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1N6288A-E3/51 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1N6288A-E3/51 belongs to Vishay's TRANSZORB® TVS family - engineered specifically for robust, millisecond-scale transient suppression in harsh electromagnetic environments where failure is not an option.
FAQ
What is the breakdown voltage tolerance of the 1N6288A-E3/51?
The 1N6288A-E3/51 has a specified breakdown voltage range of 48.5 V to 53.6 V at 1.0 mA test current, representing a ±5% tolerance around the nominal 51 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports predictable system-level surge margin analysis in designs using the 1N6288A-E3/51.
Is the 1N6288A-E3/51 suitable for bidirectional transient protection?
No - the 1N6288A-E3/51 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the 1N6288CA variant (or 1.5KE51CA). Using the 1N6288A-E3/51 in reverse-biased configurations risks permanent damage due to lack of symmetrical avalanche capability.
What is the maximum clamping voltage of the 1N6288A-E3/51 under surge conditions?
The 1N6288A-E3/51 clamps to a maximum of 70.1 V when subjected to its rated 21.4 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case transient events involving the 1N6288A-E3/51.
Does the 1N6288A-E3/51 meet AEC-Q101 qualification?
The base 1N6288A-E3/51 is a commercial-grade part. However, the AEC-Q101 qualified version is available as 1N6288AHE3_B (or 1.5KE51AHE3_B), which shares identical electrical characteristics but undergoes additional stress testing for automotive under-hood applications. Always verify the HE3 suffix when automotive qualification is required for the 1N6288A-E3/51 design-in.
What is the thermal resistance of the 1N6288A-E3/51 package?
The 1N6288A-E3/51 in its JEDEC 1.5KE package has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and a junction-to-lead resistance (RθJL) of 15.4 °C/W. These values assume standard PCB mounting with 0.375" (9.5 mm) lead length and inform heatsinking requirements when operating near its 6.5 W steady-state power dissipation limit.
1N6288A-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 21.4A
- 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:
- 1.5KE
1N6288A-E3/51 FAQ
1.How can I place an order for 1N6288A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6288A-E3/51 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 1N6288A-E3/51 reliable?
The price and inventory of 1N6288A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6288A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1N6288A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6288A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6288A-E3/51?
1N6288A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6288A-E3/51 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 1N6288A-E3/51?
For technical support, including 1N6288A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6288A-E3/51 requirements.
6.How does Aetrix verify that 1N6288A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6288A-E3/51 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 1N6288A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1N6288A-E3/51?
All 1N6288A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6288A-E3/51, 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 1N6288A-E3/51 part is unused and in its original packaging.
Return procedure for 1N6288A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6288A-E3/51 Tags
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