My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T12AHM3_A/H
- Part No.:
- SM6T12AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T12AHM3_A/H.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,512
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T12AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 12 V breakdown voltage (VBR = 11.4–12.6 V at 1.0 mA), 10.2 V stand-off voltage (VWM), 16.7 V maximum clamping voltage (VC) at 36 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the SM6T12AHM3_A/H datasheet, SM6T12AHM3_A/H pinout, SM6T12AHM3_A/H application, or SM6T12AHM3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, low-inductance SMB package, and verified clamping performance under IEC 61000-4-5 surge conditions.
Technical Context
The SM6T12AHM3_A/H operates as a silicon avalanche diode with glass-passivated junction, delivering precise reverse-biased transient suppression. Its 10.2 V stand-off voltage ensures reliable blocking during normal operation, while clamping begins sharply above 11.4 V to limit downstream voltage stress.
Rated for 600 W peak pulse power (10/1000 μs), it sustains 36 A peak pulse current and dissipates 5.0 W continuously at 50 °C on infinite heatsink. Junction temperature range spans −65 °C to +150 °C, and thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1.0 mA - defines precise avalanche initiation threshold for repeatable clamping onset |
| VWM | 10.2 V - maximum continuous reverse voltage before leakage exceeds 5.0 μA; sets safe operating margin below VBR |
| VC @ IPPM | 16.7 V at 36 A (10/1000 μs) - limits worst-case transient voltage seen by protected circuitry |
| PPPM | 600 W - peak surge energy handling capacity per IEC 61000-4-5 Level 4 (4 kV) |
| TJ max. | +150 °C - enables use in under-hood automotive environments and high-temperature industrial enclosures |
| Package | SMB (DO-214AA) - standardized surface-mount footprint with 0.220" × 0.130" body, compatible with automated pick-and-place |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak). Cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path; conducts during forward surge (e.g., reverse battery protection) |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail or sensor output); avalanche conduction initiates here during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 surges up to 4 kV without derating in standard PCB layouts |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Low inductance SMB package | Minimizes voltage overshoot during fast transients (<1 ns rise time), critical for protecting high-speed logic and gate drivers |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: 12 V battery supply line in engine control module exposed to load dump (ISO 7637-2 Pulse 5a, 35 V/100 ms). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp transients before regulator stage. Use Value: Limits voltage to ≤16.7 V during 36 A surge, preventing damage to 24 V-rated buck controller and enabling single-stage protection architecture. |
Use Scenario: Analog output of pressure sensor in factory automation PLC subjected to ESD (IEC 61000-4-2, ±8 kV contact). IC Role / Device Role / Timing Role: TVS mounted directly at connector interface to shunt ESD current away from op-amp input stage. Use Value: Sub-1 ns response and 16.7 V clamping prevent latch-up in rail-to-rail input amplifiers while maintaining <1 pF junction capacitance. |
| Consumer Power Adapter Input Stage | Telecom DC Feeding Line Surge Suppression |
Use Scenario: Secondary-side 12 V output of wall adapter exposed to conducted surges from shared AC mains (IEC 61000-4-5, 2 kV line-earth). IC Role / Device Role / Timing Role: TVS installed across output capacitor to suppress common-mode transients entering downstream USB-PD controller. Use Value: 600 W rating handles repetitive surges without degradation; 100 °C/W RθJA allows operation at 75 °C ambient without heatsink. |
Use Scenario: 48 V DC feeding line powering remote radio unit in 4G/LTE base station, subject to lightning-induced surges. IC Role / Device Role / Timing Role: TVS deployed at outdoor cabinet entry point to clamp longitudinal surges before PoE injector and Ethernet PHY. Use Value: AEC-Q101 qualification ensures survival under extended thermal cycling (-40 °C to +85 °C), and 150 °C TJmax supports sealed enclosure operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Same SMB package, 12 V VBR, but lower PPPM = 400 W; no AEC-Q101 qualification in standard grade | Limited to commercial-grade consumer and computing applications; not approved for automotive under-hood use | Select SMAJ12A only when cost sensitivity outweighs automotive qualification and 600 W surge headroom |
| SMCJ12A | Higher PPPM = 1500 W in larger SMC (DO-214AB) package; same VBR and VC specs | Requires PCB area increase (~2.5× footprint); suited for primary-side AC/DC input or high-energy industrial motor drives | Choose SMCJ12A when system-level surge tests exceed IEC 61000-4-5 Level 4 or require >600 W margin |
Compared with SMAJ12A and SMCJ12A, SM6T12AHM3_A/H uniquely balances AEC-Q101 qualification, 600 W capability, and compact SMB footprint - making it optimal for space-constrained automotive modules where both reliability and surge headroom are mandatory.
Availability
SM6T12AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power feeding systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM6T12AHM3_A/H 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, MOSFETs, and protection devices with emphasis on high-reliability and automotive-grade solutions.
The SM6T Series is engineered specifically for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 qualification and consistent clamping performance are essential.
FAQ
What is the exact breakdown voltage range for SM6T12AHM3_A/H?
The SM6T12AHM3_A/H has a guaranteed breakdown voltage (VBR) range of 11.4 V to 12.6 V at 1.0 mA test current, as specified in the Vishay datasheet revision 09-Jan-2024. This tight 10% tolerance ensures predictable clamping behavior across production lots and temperature extremes, and is measured per JEDEC standard JESD201 for whisker resistance and JESD22-B102 for solderability.
Is SM6T12AHM3_A/H qualified for automotive applications?
Yes, SM6T12AHM3_A/H is AEC-Q101 qualified, as confirmed by the HM3 suffix and documentation in Vishay's SM6T series datasheet. The "HM3" designation indicates halogen-free, RoHS-compliant construction with full AEC-Q101 stress testing - including temperature cycling, high-temperature reverse bias, and ESD - making SM6T12AHM3_A/H suitable for engine control, body electronics, and ADAS subsystems.
What is the maximum clamping voltage of SM6T12AHM3_A/H under surge conditions?
The SM6T12AHM3_A/H clamps to a maximum of 16.7 V at 36 A peak pulse current with a 10/1000 μs waveform, per the Vishay datasheet. This value represents worst-case voltage seen by protected circuitry during standardized surge events such as IEC 61000-4-5 Level 4, and is validated using calibrated surge generators and calibrated current shunts.
Does SM6T12AHM3_A/H have bidirectional capability?
No, SM6T12AHM3_A/H is strictly unidirectional, as indicated by the "A" suffix and absence of "CA" in the part number. Bidirectional variants (e.g., SM6T12CA) exist in the same family but differ in internal structure and polarity marking; SM6T12AHM3_A/H must be oriented with cathode toward the protected line and anode to ground to function correctly.
What package type does SM6T12AHM3_A/H use, and what are its key mechanical features?
SM6T12AHM3_A/H uses the SMB (DO-214AA) package: 0.220" × 0.130" body with 0.008" lead thickness, UL 94 V-0 rated molding compound, matte tin-plated leads compliant with J-STD-002 and JESD22-B102, and MSL Level 1 moisture sensitivity. Its low-profile design supports automated placement and provides thermal resistance of 20 °C/W junction-to-lead.
SM6T12AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- 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):
- 36A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T12AHM3_A/H FAQ
1.How can I place an order for SM6T12AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T12AHM3_A/H 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 SM6T12AHM3_A/H reliable?
The price and inventory of SM6T12AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T12AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T12AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T12AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T12AHM3_A/H?
SM6T12AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T12AHM3_A/H 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 SM6T12AHM3_A/H?
For technical support, including SM6T12AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T12AHM3_A/H requirements.
6.How does Aetrix verify that SM6T12AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T12AHM3_A/H 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 SM6T12AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T12AHM3_A/H?
All SM6T12AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T12AHM3_A/H, 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 SM6T12AHM3_A/H part is unused and in its original packaging.
Return procedure for SM6T12AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T12AHM3_A/H 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
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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…
