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Vishay General Semiconductor - Diodes Division 1N6273A-E3/51
- Part No.:
- 1N6273A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6273A-E3/51.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,176
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Product details
Overview
1N6273A-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 12.6 V maximum breakdown voltage (VBR), 10.2 V working peak reverse voltage (VWM), 16.7 V clamping voltage at 89.8 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across –55 °C to +175 °C junction temperature range - deployed in automotive power line surge suppression and industrial sensor interface protection.
For engineers reviewing the 1N6273A-E3/51 datasheet, 1N6273A-E3/51 pinout, 1N6273A-E3/51 application, or 1N6273A-E3/51 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, bidirectional/unidirectional polarity context, thermal resistance data, and real-world design guidance for transient immunity validation in 12 V rail systems.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast clamping response (<1 ns) under high-energy transients. Its 1500 W peak pulse power rating is defined per 10/1000 µs waveform with 0.01 % duty cycle, and it exhibits low incremental surge resistance enabling effective voltage limiting during ESD and lightning-induced surges.
It supports robust reliability with solder dip tolerance up to 275 °C for 10 s (JESD 22-B106), matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and RoHS-compliant epoxy molding meeting UL 94 V-0 flammability rating - all packaged in the industry-standard Case Style 1.5KE axial lead configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V - ensures reliable conduction onset above normal 12 V rail operating range while avoiding false triggering |
| VWM | 10.2 V - maximum steady-state reverse voltage before leakage exceeds 5 µA, compatible with 12 V nominal systems |
| VC @ IPPM | 16.7 V - clamped voltage at 89.8 A peak pulse current, limiting downstream IC stress during ISO 7637-2 Pulse 1/2a events |
| PPPM | 1500 W - peak transient energy absorption capacity for 1 ms pulses, sufficient for automotive load dump mitigation |
| IPPM | 89.8 A - maximum non-repetitive surge current capability under 10/1000 µs waveform, validated per Fig. 1 & 3 |
| TJ Range | –55 °C to +175 °C - extended junction temperature operation enables under-hood automotive deployment without derating |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, critical for PCB layout heat dissipation planning in sealed enclosures |
Pinout & Package
Package: JEDEC Case Style 1.5KE - molded epoxy axial-leaded package with cathode band marking; dimensions: 5.3 mm diameter × 9.5 mm lead length (0.210" × 0.375"); UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or low-impedance return path when used in unidirectional clamp configuration |
| Cathode (banded end) | Current exit point in forward bias; high-impedance terminal in reverse standby | Connected to protected line (e.g., 12 V supply rail); clamps to ~16.7 V during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Supports compliance with ISO 7637-2 Pulse 5a (load dump) for 12 V vehicle systems without external series impedance |
| Fast response time <1 ns | Clamps transients before sensitive logic or analog circuitry sustains damage - faster than MOVs or polymer-based protectors |
| Low incremental surge resistance | Minimizes voltage overshoot during rapid di/dt events, improving clamping precision for MOSFET gate protection |
| RoHS-compliant, matte tin-plated leads | Ensures solderability per J-STD-002 and eliminates whisker risk (JESD 201 Class 1A) for high-reliability industrial assembly |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump transients (ISO 7637-2 Pulse 5a) and alternator switching spikes. IC Role / Device Role / Timing Role: Primary shunt clamping device placed directly across input rail, conducting only during overvoltage events. Use Value: Limits rail voltage to ≤16.7 V during 89.8 A surges, preventing damage to downstream DC-DC converters and microcontrollers. | Use Scenario: Safeguarding 4–20 mA current loop transmitters and analog sensor front-ends from induced surges on field wiring. IC Role / Device Role / Timing Role: Unidirectional TVS connected between signal line and ground, absorbing common-mode transients before they reach op-amp inputs. Use Value: Maintains signal integrity by clamping induced voltages within ±16.7 V, preserving 12-bit ADC accuracy and preventing latch-up in instrumentation amplifiers. |
| Telecom Power Supply Input | Consumer Appliance Motor Control |
Use Scenario: Secondary overvoltage protection on AC/DC adapter outputs feeding PoE-powered devices or base station backhaul modules. IC Role / Device Role / Timing Role: Standby clamping element across regulated 12 V or 24 V output, activated only during surge events exceeding VWM. Use Value: Provides fail-safe backup to primary crowbar circuits, ensuring no single-point failure compromises system-level surge immunity. | Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Reverse-biased across motor terminals to clamp inductive kickback during PWM switching transitions. Use Value: Reduces EMI emissions by limiting dv/dt of flyback spikes to <1 V/ns, easing EMC filter requirements and extending MOSFET lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | Surface-mount SMB package (vs. axial 1.5KE); same VWM = 12 V, VC = 19.9 V @ 75.4 A, PPPM = 600 W | Limited to lower-energy transients; requires PCB space optimization and reflow-compatible layout | Select for compact designs where board area is constrained and peak surge energy does not exceed 600 W |
| 1.5KE12A | Same die, identical electrical specs, but standard commercial-grade packaging (no E3 suffix); RoHS-compliant, non-whisker-tested leads | Not qualified to JESD 201 Class 1A; unsuitable for high-reliability automotive or aerospace programs requiring whisker mitigation | Select for cost-sensitive industrial controls where full AEC-Q101 qualification is not mandated |
Compared with SMBJ12A, 1N6273A-E3/51 delivers 2.5× higher peak pulse power and axial through-hole mounting for mechanical robustness; compared with 1.5KE12A, it adds JESD 201 Class 1A whisker resistance and tighter process control for mission-critical deployments.
Availability
1N6273A-E3/51 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom power supply surge immunity requiring stable component supply, traceable lot history, and long-term lifecycle support.
Supply support for 1N6273A-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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive-grade qualification.
The 1N6273A-E3/51 belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the breakdown voltage tolerance for the 1N6273A-E3/51?
The 1N6273A-E3/51 has a specified breakdown voltage range of 11.4 V to 12.6 V at 1.0 mA test current (IT), corresponding to a ±5 % tolerance about the nominal 12 V rating. This tight VBR window ensures predictable turn-on behavior in 12 V system protection without premature conduction during normal operation. The 1N6273A-E3/51 maintains this specification across its full operating temperature range.
Is the 1N6273A-E3/51 suitable for automotive applications?
Yes, the 1N6273A-E3/51 is widely used in automotive applications including engine control units, body electronics, and infotainment power supplies. While the base 1N6273A-E3/51 is commercial grade, its construction - glass-passivated junction, 175 °C max junction temperature, and 1500 W pulse rating - meets core requirements for ISO 7637-2 transient immunity. For AEC-Q101 qualification, specify the HE3 variant (e.g., 1.5KE12AHE3_B).
What is the clamping voltage of the 1N6273A-E3/51 at its rated peak pulse current?
The 1N6273A-E3/51 clamps to a maximum of 16.7 V at its rated peak pulse current of 89.8 A, measured using the standard 10/1000 µs double-exponential waveform. This clamping level is guaranteed across the full operating temperature range and defines the maximum voltage imposed on protected circuitry during worst-case surge events. The 1N6273A-E3/51 achieves this with low dynamic impedance, minimizing overshoot.
Does the 1N6273A-E3/51 have bidirectional capability?
No, the 1N6273A-E3/51 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., 1.5KE12CA). The 1N6273A-E3/51 conducts only in reverse breakdown mode when the cathode is positive relative to the anode; forward conduction follows standard silicon diode characteristics with VF ≈ 3.5 V at 100 A.
What package type does the 1N6273A-E3/51 use, and what are its key mechanical features?
The 1N6273A-E3/51 uses the JEDEC-standard Case Style 1.5KE axial-leaded package: 5.3 mm diameter × 9.5 mm lead length, molded epoxy body with UL 94 V-0 flammability rating. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards, and the E3 suffix confirms JESD 201 Class 1A whisker resistance - critical for high-reliability industrial and automotive assembly.
1N6273A-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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 89.8A
- 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
1N6273A-E3/51 FAQ
1.How can I place an order for 1N6273A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6273A-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 1N6273A-E3/51 reliable?
The price and inventory of 1N6273A-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 1N6273A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1N6273A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6273A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6273A-E3/51?
1N6273A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6273A-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 1N6273A-E3/51?
For technical support, including 1N6273A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6273A-E3/51 requirements.
6.How does Aetrix verify that 1N6273A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6273A-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 1N6273A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1N6273A-E3/51?
All 1N6273A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6273A-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 1N6273A-E3/51 part is unused and in its original packaging.
Return procedure for 1N6273A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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