My Inquiry
My Account
Taiwan Semiconductor Corporation SMA6J20AHR3G
- Part No.:
- SMA6J20AHR3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J20AHR3G.pdf
- Description:
- TVS DIODE 20VWM 31.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,885
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA6J20AHR3G from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a 20V working standoff voltage, 22.2–24.5V breakdown range at 1mA, and 31.4V maximum clamping voltage at 19.1A peak pulse current; designed for automotive and industrial DC/DC converter protection against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMA6J20AHR3G datasheet, SMA6J20AHR3G pinout, SMA6J20AHR3G application, or SMA6J20AHR3G equivalent, key selection criteria include clamping performance under 10/1000μs waveform, DO-214AC package compatibility with automated SMT lines, junction temperature rating up to +175°C, and compliance with RoHS and halogen-free standards per IEC 61249-2-21.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-1ps response time and stable clamping across repeated surge events. Its single-die DO-214AC configuration supports reverse-biased operation with cathode band polarity marking and meets JESD201 Class 2 whisker resistance.
The device operates within –55°C to +175°C junction temperature range and delivers 600W peak pulse power (10/1000μs), with steady-state power dissipation rated at 4W and 50A non-repetitive forward surge capability (8.3ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR @ IT=1mA | 22.2–24.5 V - Verified breakdown threshold ensuring reliable turn-on during overvoltage |
| VC @ IPPM=19.1A | 31.4 V - Clamped voltage seen by protected circuit under full 600W surge condition |
| PPPM | 600 W - Peak pulse power handling per 10/1000μs waveform per ISO 7637-2 |
| TJ max | +175 °C - Enables use in high-temperature engine bay or industrial power supply environments |
| Package | DO-214AC (SMA) - Standardized surface-mount outline compatible with JEDEC MS-013AC footprint |
| Moisture Sensitivity | Level 1 (J-STD-020) - No dry-pack or bake requirement prior to reflow soldering |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, cathode indicated by band, weight ≈0.060g, UL 94V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to system ground or low-side reference in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 24V rail); conducts during overvoltage to shunt energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| Clamping ratio (VC/VBR) | ≤1.41 - Ensures low overvoltage stress on downstream ICs during transient events |
| Response time | <1.0 ps - Fast enough to protect sensitive logic and communication interfaces before damage occurs |
| ISO 7637-2 compliance | Pulse 1/2a/2b/3a/3b - Validated for automotive load dump and inductive switching immunity testing |
| Halogen-free construction | Per IEC 61249-2-21 - Supports environmental compliance and safer thermal decomposition in fire scenarios |
| Automated placement support | Low-profile DO-214AC body - Compatible with standard pick-and-place equipment and reflow profiles |
Applications
| Automotive Power Distribution | Industrial DC/DC Converters |
|---|---|
Use Scenario: Protection of 24V battery-fed ECUs against load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 20V. Use Value: Limits voltage to ≤31.4V during 600W pulses, preventing MOSFET gate oxide rupture and MCU brownout. | Use Scenario: Input rail protection in isolated 48V-to-12V industrial DC/DC modules exposed to switching noise and coupling. IC Role / Device Role / Timing Role: Standoff clamp on primary-side input, activated only during >22.2V excursions. Use Value: Maintains system uptime by absorbing repetitive 10/1000μs surges without degradation up to TJ = +175°C. |
| LED Driver Power Stages | Telecom Power Feeds |
Use Scenario: Overvoltage suppression on constant-current LED driver inputs subjected to inductive kickback from relay control. IC Role / Device Role / Timing Role: Reverse-biased TVS across input capacitor to clamp flyback spikes. Use Value: Prevents premature LED string failure by limiting transient voltage to safe levels below driver IC absolute max ratings. | Use Scenario: Secondary-side protection on -48V telecom power feeds vulnerable to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Cathode tied to -48V rail, anode to ground-clamps negative-going transients to ≤31.4V magnitude. Use Value: Enables robust field deployment without additional series impedance or filtering complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J20AHE3/61 | Same electrical specs; differing tape-and-reel packaging (7,500 vs. 3,000 pcs/reel) and date code format | No functional difference; identical DO-214AC mechanical fit and thermal performance | Select based on distributor inventory and assembly line reel size requirements |
| SMC6J20A | Higher power rating (1500W), larger DO-214AB (SMB) package, 33.2V clamping at 45.5A | Used where higher surge margin is required and PCB space allows larger footprint | Choose SMA6J20AHR3G when board area is constrained and 600W rating suffices |
Compared with SMA6J20AHE3/61, SMA6J20AHR3G offers identical protection performance in the same DO-214AC package but with optimized reel quantity for high-volume SMT lines; versus SMC6J20A, it trades surge capacity for compactness-critical in dense automotive module layouts.
Availability
SMA6J20AHR3G is available at Aetrix Electronics and suitable for automotive ECU design, industrial DC/DC converter development, and LED lighting power stage protection requiring stable component supply and full traceability.
Supply support for SMA6J20AHR3G 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 SMA6JxxA series is part of TSC's transient protection portfolio, engineered specifically for high-reliability, high-temperature surface-mount surge suppression in automotive and harsh-environment power systems.
FAQ
What is the clamping voltage of SMA6J20AHR3G at its rated peak pulse current?
The SMA6J20AHR3G has a maximum clamping voltage (VC) of 31.4 V when subjected to its rated peak pulse current of 19.1 A under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and ensures predictable overvoltage limiting for downstream components in protected circuits. The SMA6J20AHR3G maintains this clamping performance across its specified operating temperature range.
Is SMA6J20AHR3G compliant with automotive transient immunity standards?
Yes, SMA6J20AHR3G meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for automotive electronic control units and body electronics subject to battery line disturbances. Its 600W peak pulse power rating and fast sub-1ps response align with OEM-level surge immunity validation protocols. The SMA6J20AHR3G is widely deployed in 12V/24V vehicle subsystems requiring certified transient protection.
What is the maximum operating junction temperature for SMA6J20AHR3G?
The SMA6J20AHR3G supports a junction temperature range of –55°C to +175°C, enabling reliable operation in under-hood automotive environments and high-temperature industrial enclosures. This rating is validated per absolute maximum specifications and confirmed through thermal derating curves in the official datasheet. The SMA6J20AHR3G retains full clamping functionality across this full range without parameter shift or reliability degradation.
Does SMA6J20AHR3G have halogen-free and RoHS-compliant construction?
Yes, SMA6J20AHR3G is both RoHS compliant and halogen-free per IEC 61249-2-21, using molding compounds and plating materials that exclude brominated flame retardants and chlorine-based additives. This ensures environmentally responsible manufacturing and safer thermal decomposition behavior during end-of-life processing. The SMA6J20AHR3G carries full compliance documentation for export and regulatory submissions.
What package type does SMA6J20AHR3G use, and is it compatible with standard SMT processes?
SMA6J20AHR3G uses the DO-214AC (SMA) surface-mount package with matte tin-plated leads, fully compatible with J-STD-002 solderability standards and JESD201 Class 2 whisker resistance. Its low-profile design supports automated placement and standard lead-free reflow profiles. The SMA6J20AHR3G's moisture sensitivity level is rated at Level 1 per J-STD-020, eliminating pre-bake requirements.
SMA6J20AHR3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- SMA6J
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 31.4V
- Current - Peak Pulse (10/1000µs):
- 19.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA6J20AHR3G FAQ
1.How can I place an order for SMA6J20AHR3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J20AHR3G 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 SMA6J20AHR3G reliable?
The price and inventory of SMA6J20AHR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J20AHR3G is usually 5 days.
3.What payment methods are accepted for SMA6J20AHR3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J20AHR3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J20AHR3G?
SMA6J20AHR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J20AHR3G 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 SMA6J20AHR3G?
For technical support, including SMA6J20AHR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J20AHR3G requirements.
6.How does Aetrix verify that SMA6J20AHR3G is sourced from the original manufacturer or authorized distributors?
All SMA6J20AHR3G 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 SMA6J20AHR3G meets industry standards.
7.What is the process for return or replacement of SMA6J20AHR3G?
All SMA6J20AHR3G units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J20AHR3G, 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 SMA6J20AHR3G part is unused and in its original packaging.
Return procedure for SMA6J20AHR3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J20AHR3G Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
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…
