My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T30CAHM3_A/H
- Part No.:
- SM6T30CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30CAHM3_A/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,663
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T30CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), 600 W peak pulse power (10/1000 μs), and 150 °C max junction temperature. It protects signal lines and power rails in automotive sensor units, industrial I/O modules, and telecom interface circuits against ESD and inductive switching transients.
For engineers reviewing the SM6T30CAHM3_A/H datasheet, SM6T30CAHM3_A/H pinout, SM6T30CAHM3_A/H application, or SM6T30CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low clamping voltage (VC = 48.3 V at IPPM), and SMB footprint compatibility with automated SMT assembly.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical reverse/forward conduction behavior due to its bidirectional structure. It features glass-passivated junctions, low inductance, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Clamping occurs when transient voltage exceeds VBR (33.3–37.1 V), limiting downstream voltage to ≤48.3 V at 16 A peak pulse current (IPPM). Thermal resistance is 100 °C/W junction-to-ambient on standard 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 33.3 V / 37.1 V - Breakdown threshold range at 1 mA test current; defines clamping onset precision |
| VC @ IPPM | 48.3 V - Clamped voltage at 16 A peak pulse (10/1000 μs); determines protected circuit stress level |
| PPPM | 600 W - Peak surge power handling capacity; validates robustness against IEC 61000-4-5 Level 4 transients |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - Standard surface-mount outline with 0.220" body length; compatible with IPC-7351B footprint |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, and HAST testing |
| RoHS | Halogen-free, RoHS-compliant - Meets EU Directive 2011/65/EU and JEDEC JS709E material requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking. Cathode/anode terminals are functionally symmetric; both ends serve as interchangeable surge current paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (reverse bias) | Accepts transient energy during negative excursions; clamps to VC when voltage exceeds VBR |
| Cathode | Surge current entry (forward bias) | Accepts transient energy during positive excursions; identical clamping behavior to anode due to bidirectionality |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against high-energy transients per ISO 7637-2 Pulse 5a without derating at TA ≤ 85 °C |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or ADC front-ends |
| AEC-Q101 qualified (HM3 suffix) | Validates long-term reliability for automotive applications including engine control, ADAS sensors, and infotainment interfaces |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow without moisture sensitivity concerns or baking requirements |
| Halogen-free, RoHS-compliant | Meets automotive OEM environmental mandates (e.g., GMW3172, Ford WSS-M99P9999-A1) and end-of-life recycling standards |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector interface to clamp ±30 kV ESD (IEC 61000-4-2) and ±100 V load dump spikes. Use Value: Limits voltage seen by MAX13041 or TJA1042 transceivers to ≤48.3 V, preventing latch-up and ensuring ASIL-B functional safety compliance. | Use Scenario: Shielding 24 V DC digital input modules in factory automation controllers from relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary surge suppression on DIN-rail mounted I/O cards, installed upstream of optocouplers and Schmitt triggers. Use Value: Withstands 600 W pulses without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 Ed.3 Class 3 immunity testing. |
| Telecom Interface Protection | Consumer Power Adapter Input Stage |
Use Scenario: Safeguarding Ethernet PHYs and PoE injectors against lightning-induced surges on RJ45 ports in enterprise switches. IC Role / Device Role / Timing Role: Secondary-level TVS on differential pairs (e.g., TX+/TX−), coordinated with common-mode chokes and primary GDTs. Use Value: Low capacitance (<50 pF) avoids signal integrity loss at 100BASE-TX speeds while clamping to <48.3 V within 1 ns response time. | Use Scenario: Input-stage transient suppression on AC-DC adapters for smart home hubs, guarding bridge rectifiers and primary-side controllers. IC Role / Device Role / Timing Role: Parallel-connected bidirectional TVS across bulk capacitor inputs to absorb line-to-line and line-to-ground surges. Use Value: Halogen-free construction satisfies UL 62368-1 Annex D and regional e-waste regulations without compromising 600 W surge rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA | Same VWM (30 V), lower PPPM (400 W), SMA package (smaller thermal mass) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost and board space are critical and automotive qualification is unnecessary |
| 1.5KE30CA | Higher PPPM (1500 W), axial DO-201 package, higher clamping voltage (VC = 48.4 V) | Through-hole mounting only; unsuitable for high-density SMT designs | Choose for legacy through-hole systems requiring higher surge margin and manual assembly |
Compared with SMAJ30CA and 1.5KE30CA, SM6T30CAHM3_A/H delivers AEC-Q101 qualification, halogen-free compliance, and SMB footprint-making it optimal for new automotive and industrial SMT designs where reliability, regulatory alignment, and assembly efficiency are prioritized.
Availability
SM6T30CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom interface surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SM6T30CAHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The SM6T Series is designed specifically for robust transient voltage suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, high pulse power, and low clamping voltage are essential.
FAQ
What is the clamping voltage of SM6T30CAHM3_A/H at its rated peak pulse current?
The SM6T30CAHM3_A/H has a maximum clamping voltage (VC) of 48.3 V when subjected to its peak pulse current (IPPM) of 16 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88385 and ensures downstream components experience controlled overvoltage stress during surge events. The SM6T30CAHM3_A/H maintains this clamping performance across its full operating temperature range of −65 °C to +150 °C.
Is SM6T30CAHM3_A/H suitable for automotive applications?
Yes, SM6T30CAHM3_A/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials, making it suitable for automotive applications including engine control units, ADAS sensor interfaces, and body electronics. Its SMB package, MSL Level 1 rating, and validated reliability under temperature cycling and humidity testing confirm its readiness for under-hood and cabin-mounted systems. The SM6T30CAHM3_A/H meets stringent automotive ESD and surge immunity requirements per ISO 10605 and ISO 7637-2.
What does the "HM3" suffix indicate in SM6T30CAHM3_A/H?
The "HM3" suffix in SM6T30CAHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade "E3" or "M3" versions and confirms compliance with automotive environmental and reliability standards. The "_A/H" revision code indicates the specific manufacturing lot and process revision per Vishay's internal documentation. SM6T30CAHM3_A/H is intended for high-reliability applications where material content and qualification status are auditable.
How does SM6T30CAHM3_A/H differ from unidirectional SM6T30A variants?
SM6T30CAHM3_A/H is bidirectional, meaning it clamps voltage transients in both polarities symmetrically, with no cathode band marking. In contrast, unidirectional SM6T30A has a defined cathode (marked band) and conducts only in reverse bias. The SM6T30CAHM3_A/H exhibits identical VBR (33.3–37.1 V) and VC (48.3 V) specifications in both directions, enabling use on AC-coupled or differential signal lines where polarity reversal may occur, such as CAN bus or Ethernet PHY interfaces.
What is the thermal resistance of SM6T30CAHM3_A/H, and how does it affect layout design?
The SM6T30CAHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard PCB layout per Vishay's recommended pad dimensions. To maintain TJ ≤ 150 °C under sustained 5.0 W power dissipation, designers must ensure adequate copper area and avoid excessive ambient temperature rise. The SM6T30CAHM3_A/H thermal performance is optimized for SMB footprint constraints without requiring external heatsinking.
SM6T30CAHM3_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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.5V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- 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)
SM6T30CAHM3_A/H FAQ
1.How can I place an order for SM6T30CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30CAHM3_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 SM6T30CAHM3_A/H reliable?
The price and inventory of SM6T30CAHM3_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 SM6T30CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T30CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30CAHM3_A/H?
SM6T30CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30CAHM3_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 SM6T30CAHM3_A/H?
For technical support, including SM6T30CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30CAHM3_A/H requirements.
6.How does Aetrix verify that SM6T30CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T30CAHM3_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 SM6T30CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T30CAHM3_A/H?
All SM6T30CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30CAHM3_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 SM6T30CAHM3_A/H part is unused and in its original packaging.
Return procedure for SM6T30CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T30CAHM3_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
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 …
