My Inquiry
My Account
Taiwan Semiconductor Corporation SMA6J12AHR3G
- Part No.:
- SMA6J12AHR3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J12AHR3G.pdf
- Description:
- TVS DIODE 12VWM 18.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,015
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA6J12AHR3G from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a 12V working standoff voltage (VWM), 13.3–14.7V breakdown voltage (VBR), and 18.8V maximum clamping voltage (VC) at 31.9A peak pulse current, designed for surge protection in DC/DC converters and power adapters.
For engineers reviewing the SMA6J12AHR3G datasheet, SMA6J12AHR3G pinout, SMA6J12AHR3G application, or SMA6J12AHR3G equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, DO-214AC (SMA) package compatibility, and 175°C junction temperature rating for automotive and industrial power rail protection.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-1.0ps response time and stable clamping during fast transients. Its single-die DO-214AC configuration supports automated placement and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements.
The device operates across –55°C to +175°C junction temperature range and delivers 600W peak pulse power (10/1000μs waveform) with 1.0μA max reverse leakage at 12V, enabling robust protection of 12V automotive and industrial power rails against ESD, load dump, and inductive switching events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 13.3 V / 14.7 V - Breakdown occurs within this range at 1 mA test current |
| VC @ IPPM | 18.8 V - Clamps to ≤18.8 V at 31.9 A peak pulse current (10/1000μs) |
| PPPM | 600 W - Peak pulse power handling per ISO 7637-2-compliant transient |
| TJ max | +175 °C - Enables operation in under-hood automotive and high-temp industrial environments |
| IR @ VWM | 1.0 μA - Low leakage preserves efficiency in always-on 12V monitoring circuits |
| Package | DO-214AC (SMA) - Standardized surface-mount footprint compatible with IPC-7351B land patterns |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads; polarity indicated by cathode band; weight ≈ 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return rail) during normal operation |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 12V input); conducts only during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term reliability and stable VBR drift under thermal cycling and humidity stress |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load disconnect), Pulse 2a/2b (battery interruption), and Pulse 3a/3b (switching noise) |
| Fast response time | <1.0 ps enables suppression before sensitive downstream ICs experience overstress |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally compliant manufacturing |
| J-STD-020 Level 1 | Zero bake requirement prior to reflow - supports standard SMT assembly without moisture mitigation |
Applications
| Automotive Power Rail Protection | Industrial DC/DC Converter Input |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and system input filter. Use Value: Clamps to 18.8V at 31.9A, limiting stress on upstream fuse and downstream LDOs while surviving repeated ISO 7637-2 pulses. | Use Scenario: Safeguarding isolated DC/DC converter primary-side input from flyback-induced spikes. IC Role / Device Role / Timing Role: Transient shunt connected across input capacitor terminals. Use Value: Sub-1.0ps response ensures clamping initiates before transformer leakage energy damages MOSFET gate oxide. |
| LED Driver Power Stage | USB-C PD Adapter Secondary Side |
Use Scenario: Suppressing inductive kickback from constant-current LED string switching. IC Role / Device Role / Timing Role: TVS mounted across LED anode-cathode or driver output terminals. Use Value: 600W peak power rating absorbs repetitive 10/1000μs surges generated by PWM dimming without degradation. | Use Scenario: Protecting secondary-side synchronous rectifiers and controllers in 65W+ USB-C PD adapters. IC Role / Device Role / Timing Role: Reverse-biased clamp on output rail to absorb reflected transients from cable hot-plug events. Use Value: 1.0μA leakage at 12V minimizes standby power loss while maintaining fast clamping for IEC/UL 62368-1 surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J12A | Same electrical specs and DO-214AC package; R3G suffix denotes tape-and-reel packaging per 7,500 units | No functional difference - identical surge performance and thermal rating | Select SMA6J12AHR3G when requiring green compound (halogen-free) and RoHS-compliant assembly |
| SMB6J12A | Higher 1000W PPPM rating; larger DO-214AA (SMB) package; 20.9V VC @ 43.3A | Better suited for higher-energy transients but requires PCB layout change due to 4.6mm × 3.6mm vs. 4.3mm × 2.6mm footprint | Choose SMB6J12A only if system-level testing confirms need for >600W clamping margin and board space permits larger package |
Compared with SMA6J12A (non-R3G variant), SMA6J12AHR3G adds halogen-free construction and green molding compound without altering electrical behavior; versus SMB6J12A, it trades peak power headroom for smaller footprint and tighter clamping voltage - critical for space-constrained 12V automotive modules.
Availability
SMA6J12AHR3G is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC/DC converters, and LED lighting drivers requiring stable component supply with full traceability and lifecycle management.
Supply support for SMA6J12AHR3G 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, specializing in power management, protection, and signal conditioning devices.
The SMA6JxxA series targets cost-sensitive, high-reliability transient suppression in automotive and industrial power systems, emphasizing AEC-Q101 readiness, ISO 7637-2 compliance, and automated SMT manufacturability.
FAQ
What is the maximum clamping voltage of SMA6J12AHR3G at its rated peak pulse current?
The SMA6J12AHR3G has a maximum clamping voltage (VC) of 18.8 V when subjected to its rated peak pulse current of 31.9 A under the standard 10/1000μs waveform. This value is guaranteed across the operating temperature range and ensures downstream components see limited overvoltage stress during transient events.
Does SMA6J12AHR3G meet automotive qualification standards?
SMA6J12AHR3G is not AEC-Q101 qualified per official TSC documentation, but it meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transient immunity and operates from –55°C to +175°C. Customers requiring formal AEC-Q101 certification should verify with TSC's latest qualification reports before deployment in safety-critical vehicle systems.
What does the "HR3G" suffix indicate in SMA6J12AHR3G?
The "HR3G" suffix in SMA6J12AHR3G specifies halogen-free green compound (per IEC 61249-2-21), tape-and-reel packaging (7,500 units per reel), and RoHS compliance. It distinguishes this variant from non-halogen-free or bulk-packaged versions of the same electrical specification.
Can SMA6J12AHR3G be used in bidirectional protection configurations?
No - SMA6J12AHR3G is a unidirectional TVS diode intended for DC line protection where polarity is fixed. For bidirectional AC or floating-rail applications, a dedicated bidirectional part such as SMA6J12CA must be selected, as SMA6J12AHR3G lacks symmetrical clamping capability.
What is the steady-state power dissipation rating for SMA6J12AHR3G?
The SMA6J12AHR3G has a steady-state power dissipation (PD) rating of 4 W at TA = 25°C. This value applies only to continuous DC or low-frequency reverse-bias conditions - the device is not intended for sustained power dissipation and relies on transient pulse ratings (e.g., 600W at 10/1000μs) for its primary protection function.
SMA6J12AHR3G 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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 18.8V
- Current - Peak Pulse (10/1000µs):
- 31.9A
- 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)
SMA6J12AHR3G FAQ
1.How can I place an order for SMA6J12AHR3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J12AHR3G 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 SMA6J12AHR3G reliable?
The price and inventory of SMA6J12AHR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J12AHR3G is usually 5 days.
3.What payment methods are accepted for SMA6J12AHR3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J12AHR3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J12AHR3G?
SMA6J12AHR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J12AHR3G 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 SMA6J12AHR3G?
For technical support, including SMA6J12AHR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J12AHR3G requirements.
6.How does Aetrix verify that SMA6J12AHR3G is sourced from the original manufacturer or authorized distributors?
All SMA6J12AHR3G 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 SMA6J12AHR3G meets industry standards.
7.What is the process for return or replacement of SMA6J12AHR3G?
All SMA6J12AHR3G units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J12AHR3G, 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 SMA6J12AHR3G part is unused and in its original packaging.
Return procedure for SMA6J12AHR3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J12AHR3G 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…
