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Vishay General Semiconductor - Diodes Division SM6T100AHM3_B/I
- Part No.:
- SM6T100AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100AHM3_B/I.pdf
- Description:
- 600W,100V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,147
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Product details
Overview
SM6T100AHM3_B/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 100 V standoff voltage (VWM), 137 V clamping voltage (VC) at 4.4 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs). It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics against inductive switching transients.
For engineers reviewing the SM6T100AHM3_B/I datasheet, SM6T100AHM3_B/I pinout, SM6T100AHM3_B/I application, or SM6T100AHM3_B/I equivalent, key selection criteria include clamping performance under 10/1000 μs surge, AEC-Q101 qualification status, unidirectional polarity with cathode band marking, and SMB package thermal resistance (RθJA = 100 °C/W).
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds 100 V (VWM), it avalanches at 95–105 V (VBR), limiting transient energy to ≤137 V at 4.4 A. Its glass-passivated junction ensures stable breakdown and low leakage (<1 μA at VWM).
Designed for surface-mount automated assembly, the device meets J-STD-020 MSL Level 1 (260 °C peak reflow), features matte tin-plated leads, and is halogen-free and RoHS-compliant per HM3 suffix. It supports single-pulse surge handling up to 100 A IFSM (10 ms half-sine) and continuous power dissipation of 5.0 W at 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 95.0 / 105 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 137 V at 4.4 A - Clamped voltage during 10/1000 μs surge; determines protected circuit's maximum overvoltage stress |
| PPPM | 600 W - Peak transient power absorption capability under standardized 10/1000 μs waveform |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; governs derating above 25 °C |
| TJ max. | +150 °C - Maximum allowable junction temperature; sets upper limit for ambient + self-heating design margin |
| ID @ VWM | <1 μA - Reverse leakage at rated standoff voltage; critical for low-power sensor line protection |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, with cathode indicated by a band on the case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Load Dump and IEC 61000-4-5 surge events in automotive ECUs |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114 |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| Low inductance SMB package | Minimizes voltage overshoot during fast transients (e.g., <100 ns rise time), improving clamping fidelity |
| MSL Level 1, 260 °C peak reflow | Supports lead-free SMT assembly without popcorn cracking or delamination risk |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protecting gate drivers and high-side switches in 12 V/24 V vehicle power modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between switch drain and ground to clamp inductive kickback surges. Use Value: Limits transient voltage to ≤137 V, preventing gate oxide rupture in 100 V-rated MOSFETs while surviving 600 W pulses. | Use Scenario: Safeguarding analog input channels of PLC I/O modules connected to 4–20 mA current loops exposed to field wiring transients. IC Role / Device Role / Timing Role: Shunt protector on signal line to ground, activated only during >100 V surges. Use Value: Sub-1 μA leakage preserves loop accuracy; 137 V clamping prevents ADC saturation and front-end damage. |
| Automotive Sensor Signal Conditioning | Consumer Appliance Power Supply Input |
Use Scenario: Shielding Hall-effect and crankshaft position sensors from ESD and switching noise in engine control units. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on sensor supply rail (VCC) referenced to chassis ground. Use Value: 100 V VWM avoids false triggering during normal 12 V nominal operation; 137 V VC ensures sensor IC survival under ISO 10605 30 kV ESD. | Use Scenario: Input-stage surge suppression in AC-DC adapters for smart home devices subjected to lightning-induced surges on mains lines. IC Role / Device Role / Timing Role: Primary clamping device across bulk capacitor input, diverting 600 W transients to ground. Use Value: 600 W rating handles IEC 61000-4-5 Level 3 (2 kV line-earth) surges; SMB footprint enables compact PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100A-E3/52 | Same VWM (100 V), same SMB package, but lower PPPM (400 W) and higher VC (156 V at 3.8 A) | Lacks AEC-Q101 qualification; not rated for automotive underhood use | Select when cost sensitivity outweighs automotive qualification and higher clamping voltage is acceptable |
| SMCJ100A-H | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VWM/VC specs | Requires larger PCB area and different pad layout; better suited for high-energy industrial surges | Select when surge energy exceeds 600 W capability and board space allows SMC footprint |
Compared with SMAJ100A-E3/52, SM6T100AHM3_B/I delivers superior clamping (137 V vs. 156 V) and automotive qualification; versus SMCJ100A-H, it trades peak power for smaller size and lower thermal mass-ideal where space-constrained automotive modules demand AEC-Q101 compliance without oversized packaging.
Availability
SM6T100AHM3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drive interfaces, and consumer appliance power supplies requiring stable component supply with halogen-free, RoHS-compliant, and AEC-Q101-qualified TVS protection.
Supply support for SM6T100AHM3_B/I 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, efficiency, and application-specific optimization.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments-specifically targeting automotive, industrial, and telecom systems where robust 600 W surge handling, low clamping, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the SM6T100AHM3_B/I under a standard 10/1000 μs surge?
The SM6T100AHM3_B/I has a maximum clamping voltage (VC) of 137 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 4.4 A. This value is measured per Figure 1 in the Vishay datasheet 88385 and defines the upper voltage limit imposed on protected circuits during surge events. The SM6T100AHM3_B/I maintains this clamping performance across its specified operating temperature range.
Is the SM6T100AHM3_B/I qualified for automotive applications?
Yes, the SM6T100AHM3_B/I is AEC-Q101 qualified, as confirmed by the HM3 suffix in its ordering code. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD per JESD22 standards. The SM6T100AHM3_B/I is intended for under-hood and body-control module applications where automotive-grade reliability is required.
What does the "HM3" suffix indicate in SM6T100AHM3_B/I?
"HM3" denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes the SM6T100AHM3_B/I from commercial-grade variants (e.g., E3 or M3) and confirms compliance with automotive environmental and reliability requirements. The "B/I" portion specifies tape-and-reel packaging: 13-inch reel (I) with revision B marking, per Vishay's ordering nomenclature in document 88385.
How does the SM6T100AHM3_B/I differ from bidirectional TVS diodes like SM6T100CA?
The SM6T100AHM3_B/I is unidirectional and features a cathode band for polarity identification, enabling use in DC circuits where reverse conduction must be blocked. In contrast, SM6T100CA is bidirectional (no polarity marking) and symmetric-suitable for AC signal lines or differential buses. Their VWM, VBR, and VC values are identical, but the SM6T100AHM3_B/I cannot replace bidirectional types in AC-coupled applications without circuit redesign.
What is the thermal resistance and maximum junction temperature of the SM6T100AHM3_B/I?
The SM6T100AHM3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads, and a maximum junction temperature (TJ max.) of +150 °C. These parameters define safe operating limits: at 5.0 W steady-state power dissipation, ambient must remain ≤100 °C to avoid exceeding TJ max., per the derating curve in Figure 2 of datasheet 88385.
SM6T100AHM3_B/I 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 4.4A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SM6T100AHM3_B/I FAQ
1.How can I place an order for SM6T100AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100AHM3_B/I 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 SM6T100AHM3_B/I reliable?
The price and inventory of SM6T100AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T100AHM3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T100AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100AHM3_B/I?
SM6T100AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100AHM3_B/I 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 SM6T100AHM3_B/I?
For technical support, including SM6T100AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100AHM3_B/I requirements.
6.How does Aetrix verify that SM6T100AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T100AHM3_B/I 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 SM6T100AHM3_B/I meets industry standards.
7.What is the process for return or replacement of SM6T100AHM3_B/I?
All SM6T100AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100AHM3_B/I, 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 SM6T100AHM3_B/I part is unused and in its original packaging.
Return procedure for SM6T100AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100AHM3_B/I Tags
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