My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC120AHM3/H
- Part No.:
- 1.5SMC120AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC120AHM3/H.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,005
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC120AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 120 V breakdown voltage (VBR min = 114 V, max = 126 V), 102 V stand-off voltage (VWM), 165 V maximum clamping voltage (VC) at 9.1 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients in automotive and industrial systems.
For engineers reviewing the 1.5SMC120AHM3/H datasheet, 1.5SMC120AHM3/H pinout, 1.5SMC120AHM3/H application, or 1.5SMC120AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant HM3 suffix, SMC (DO-214AB) package with cathode band polarity marking, and verified clamping performance under repetitive surge conditions up to 150 °C junction temperature.
Technical Context
The 1.5SMC120AHM3/H operates as a unidirectional avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to limit transient overvoltages before sensitive downstream circuitry is stressed. Its thermal design supports operation up to 150 °C junction temperature, with RθJA = 75 °C/W and RθJL = 15 °C/W enabling effective heat dissipation on standard PCB copper pads.
It is rated for 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and exhibits a temperature coefficient of VBR of +0.107 %/°C - ensuring predictable voltage threshold drift across operating temperature ranges. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 114 V / 126 V at 1 mA test current - defines precise avalanche onset range for reliable triggering without premature conduction. |
| VWM | 102 V - maximum continuous reverse working voltage; ensures stable operation below clamping threshold during normal system operation. |
| VC @ IPPM | 165 V at 9.1 A peak pulse current - actual worst-case clamped voltage seen by protected circuit during 10/1000 µs surge event. |
| PPPM | 1500 W - peak pulse power handling capacity with 0.01 % duty cycle, enabling protection against high-energy transients like ISO 7637-2 Pulse 5a. |
| IFSM | 200 A - single half-sine surge current rating (8.3 ms), supporting robustness against motor-switching or load-dump events. |
| TJ max | +150 °C - maximum junction temperature, allowing deployment in under-hood automotive or high-ambient industrial environments. |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 0.305" × 0.320" footprint, compatible with automated pick-and-place and reflow processes. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance return plane; forms current loop with cathode during clamping. |
| Cathode | Avalanche voltage reference / clamping node | Marked with band; connected to protected line (e.g., 12 V rail or CAN bus); conducts when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics, with extended temperature and life testing. |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance requirements for global OEM supply chains without compromising surge robustness. |
| 1500 W peak pulse power (10/1000 µs) | Enables protection against high-energy transients such as ISO 16750-2 load dump or IEC 61000-4-5 surge events. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving margin for 3.3 V/5 V logic-level interface protection. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow profiles without moisture-related failure risk during manufacturing. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V power distribution networks in vehicle ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges before DC-DC converters or microcontrollers. Use Value: Clamps to 165 V at 9.1 A, limiting stress on downstream 36 V-rated regulators and meeting ISO 7637-2 Pulse 5a immunity requirements. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC modules from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS mounted directly at connector entry point to shunt fast transients before signal conditioning op-amps or ADC inputs. Use Value: Sub-1 ns response time and 102 V VWM ensure no interference with 0–10 V or 4–20 mA sensor signals during normal operation. |
| Telecom Line Surge Suppression | Consumer Power Adapter Input Protection |
|
Use Scenario: Safeguarding PoE-powered Ethernet ports and base station RF front-end bias lines against lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on DC bias feed lines, coordinated with gas discharge tubes for multi-stage protection. Use Value: 1500 W PPPM and 165 V VC provide first-line energy absorption before secondary protection stages activate. |
Use Scenario: Overvoltage protection on AC-DC adapter primary-side rectifier outputs and secondary-side 12 V/19 V rails. IC Role / Device Role / Timing Role: Unidirectional TVS placed across bulk capacitor to absorb turn-on spikes and transformer leakage energy. Use Value: 200 A IFSM rating withstands repeated inrush events; VWM = 102 V avoids conduction during nominal 12 V output regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A-E3/52 | Lower PPPM (600 W), same VBR range (114–126 V), SMB package (smaller footprint, higher RθJA = 85 °C/W). | Not AEC-Q101 qualified; suitable for commercial-grade consumer or computing applications only. | Select when board space is constrained and surge energy is limited to <600 W (e.g., USB-C PD port protection). |
| 1.5KE120A | Through-hole DO-201 package, identical electrical specs but larger size and manual assembly requirement; no AEC-Q101 or halogen-free certification. | Limited to legacy industrial designs where SMT is not feasible or rework tolerance is prioritized over density. | Choose only for prototyping or repair scenarios requiring through-hole compatibility and no automotive qualification needs. |
Compared with SMBJ120A-E3/52 and 1.5KE120A, the 1.5SMC120AHM3/H delivers higher surge robustness (1500 W vs. 600 W or 1500 W with inferior thermal performance), automotive qualification, and halogen-free compliance - making it the preferred choice for production-grade automotive and industrial power rail protection where reliability and regulatory alignment are critical.
Availability
1.5SMC120AHM3/H is available at Aetrix Electronics and suitable for automotive ECU power management, industrial sensor interface protection, telecom line surge suppression, and consumer power adapter input protection requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC120AHM3/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, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade components.
The 1.5SMC Series was developed specifically for surface-mount transient suppression in demanding environments - combining high-power surge handling, AEC-Q101 qualification, and halogen-free packaging for next-generation automotive and industrial electronics.
FAQ
What is the clamping voltage of the 1.5SMC120AHM3/H under a 10/1000 µs surge?
The 1.5SMC120AHM3/H has a maximum clamping voltage (VC) of 165 V at 9.1 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and represents the worst-case voltage imposed on the protected circuit during full-rated surge conditions. The 1.5SMC120AHM3/H maintains this clamping performance across its specified operating temperature range.
Is the 1.5SMC120AHM3/H AEC-Q101 qualified?
Yes, the 1.5SMC120AHM3/H is AEC-Q101 qualified. The "HM3" suffix denotes halogen-free, RoHS-compliant construction with full AEC-Q101 stress testing - including temperature cycling, humidity bias, and high-temperature operating life - validating its suitability for automotive applications such as engine control, body electronics, and ADAS power domains.
What does the "H" in 1.5SMC120AHM3/H indicate?
The "H" in 1.5SMC120AHM3/H specifies the tape-and-reel packaging option: 7-inch diameter reel with 850 units per reel (ordering code /H). This is distinct from "I", which denotes a 13-inch reel with 3500 units. The "HM3" portion confirms halogen-free, RoHS-compliant, AEC-Q101-qualified construction, while "120A" identifies the 120 V nominal breakdown variant within the 1.5SMC family.
How does the 1.5SMC120AHM3/H differ from bidirectional variants like 1.5SMC120CA?
The 1.5SMC120AHM3/H is unidirectional and features a cathode band for polarity-sensitive placement, whereas 1.5SMC120CA is bidirectional with no polarity marking and symmetric clamping in both directions. Electrically, the 1.5SMC120AHM3/H has VWM = 102 V and VC = 165 V, while 1.5SMC120CA has lower VWM (≈94 V) and higher VC (≈175 V) due to dual-junction architecture - making the 1.5SMC120AHM3/H preferable for DC rail protection where polarity is fixed.
What is the thermal resistance of the 1.5SMC120AHM3/H?
The 1.5SMC120AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads resistance (RθJL) of 15 °C/W, measured on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad layout per datasheet Figure 2. These values enable reliable operation up to +150 °C junction temperature when mounted per Vishay's mechanical guidelines.
1.5SMC120AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 9.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC120AHM3/H FAQ
1.How can I place an order for 1.5SMC120AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC120AHM3/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 1.5SMC120AHM3/H reliable?
The price and inventory of 1.5SMC120AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC120AHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC120AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC120AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC120AHM3/H?
1.5SMC120AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC120AHM3/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 1.5SMC120AHM3/H?
For technical support, including 1.5SMC120AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC120AHM3/H requirements.
6.How does Aetrix verify that 1.5SMC120AHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC120AHM3/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 1.5SMC120AHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC120AHM3/H?
All 1.5SMC120AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC120AHM3/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 1.5SMC120AHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC120AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC120AHM3/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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
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 …
