My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC68A-M3/57T
- Part No.:
- 1.5SMC68A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68A-M3/57T.pdf
- Description:
- TVS DIODE 58.1VWM 92VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,361
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC68A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 68 V breakdown voltage (VBR = 64.6–71.4 V at 1 mA), 58.1 V stand-off voltage (VWM), 92.0 V clamping voltage (VC) at 16.3 A peak pulse current, and 1500 W peak pulse power with 10/1000 µs waveform - deployed for overvoltage protection of MOSFETs and sensor signal lines in automotive powertrain control units.
For engineers reviewing the 1.5SMC68A-M3/57T datasheet, 1.5SMC68A-M3/57T pinout, 1.5SMC68A-M3/57T application, or 1.5SMC68A-M3/57T equivalent, key selection criteria include unidirectional polarity, halogen-free RoHS-compliant M3 suffix, 150 °C max junction temperature, low incremental surge resistance, and AEC-Q101 qualification eligibility via HM3 variant.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (>1 µA leakage at 58.1 V), then rapidly avalanches when transient voltage exceeds VBR, diverting surge current away from downstream ICs. Its glass-passivated junction ensures stable breakdown and fast response (<1 ns).
The device uses a single P-N junction structure with cathode band marking, optimized for 10/1000 µs surge waveforms per IEC 61000-4-5. Thermal resistance is 75 °C/W (junction-to-ambient) on standard 8 mm × 8 mm copper pads, enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1 mA test current - defines precise avalanche onset threshold for repeatable clamping behavior |
| VWM | 58.1 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 92.0 V at 16.3 A - clamped voltage during 1500 W surge, limiting stress on protected circuitry |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform, supporting industrial lightning surge immunity |
| IFSM | 200 A - non-repetitive forward surge rating (8.3 ms half-sine), relevant for DC bus fault protection |
| TJ max | +150 °C - enables use in under-hood automotive environments without derating penalties |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 compliant (reflow peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection point for unidirectional clamping | Connected to protected line; avalanche conduction occurs when line voltage exceeds VBR relative to anode |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes surge current path during transient events |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Supports Level 4 IEC 61000-4-5 surge immunity (4 kV line-to-ground) without external series impedance |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage overshoot during fast transients, protecting 75 V-rated MOSFETs and CAN transceivers |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets automotive OEM material compliance requirements including GMW3172 and Ford WSS-M99P1111-A |
| Fast response time (<1 ns) | Clamps ESD events (IEC 61000-4-2 ±15 kV contact) before sensitive gate oxides break down |
| AEC-Q101 qualification path | HM3 variant available - validated for automotive powertrain, body electronics, and ADAS sensor interfaces |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Inputs |
|---|---|
|
Use Scenario: Protecting MCU GPIO and LIN transceiver inputs from load dump spikes (ISO 7637-2 Pulse 5a, up to 60 V/100 ms) in engine control modules. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between signal line and chassis ground, clamping transients within 1 ns. Use Value: Prevents latch-up or permanent damage to 5 V logic interfaces while maintaining <1 µA leakage at 58.1 V operating voltage. |
Use Scenario: Safeguarding encoder feedback lines and analog sensor inputs against switching surges from 48 V BLDC motor drivers. IC Role / Device Role / Timing Role: Standoff voltage (58.1 V) exceeds nominal 48 V rail, enabling transparent operation during normal conditions. Use Value: Limits induced transients to ≤92.0 V, preserving integrity of 12-bit ADC references and differential RS-422 receivers. |
| Telecom PoE Interface Protection | Consumer Appliance Power Supply Inputs |
|
Use Scenario: Secondary-side transient suppression on 57 V PoE++ (IEEE 802.3bt) data lines exposed to Ethernet cable ESD coupling. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to local ground plane, positioned after common-mode choke. Use Value: Clamps ±15 kV ESD (IEC 61000-4-2) to <92 V within nanoseconds, preventing PHY IC damage without affecting 100BASE-TX signal integrity. |
Use Scenario: Input-stage protection for AC-DC SMPS in smart home hubs, guarding against mains-borne surges and relay contact bounce. IC Role / Device Role / Timing Role: Primary TVS across bulk capacitor input, absorbing repetitive 1.5 kV/0.5 J surges per IEC 61000-4-4. Use Value: Withstands 1500 W peak pulses at 0.01% duty cycle, eliminating need for redundant MOV+TVS cascaded designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A-E3/52 | Lower PPPM (600 W), SMB package (smaller thermal mass), VBR = 60.8–67.2 V, VC = 103 V @ 5.8 A | Not suitable for 1500 W surge events; limited to consumer-grade 1 kV IEC 61000-4-5 applications | Select when board space is constrained and surge energy is ≤600 W; verify thermal derating on 5 mm × 5 mm pads |
| 1.5KE68A | Through-hole DO-201 package, same VBR/VC specs but higher RθJA (100 °C/W), no halogen-free option | Requires wave soldering; incompatible with automated SMT lines; lacks M3 environmental compliance | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ64A-E3/52 and 1.5KE68A, the 1.5SMC68A-M3/57T delivers 2.5× higher surge power in an SMT-compatible, halogen-free package - making it the preferred choice for AEC-Q101-aligned automotive and industrial designs requiring robust, automated assembly.
Availability
1.5SMC68A-M3/57T is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive inputs, telecom PoE interface protection, and consumer appliance power supply inputs requiring stable component supply and halogen-free compliance.
Supply support for 1.5SMC68A-M3/57T 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, power efficiency, and automotive-grade qualification.
The 1.5SMC Series was designed specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge capability, AEC-Q101 readiness, and SMT manufacturability are critical.
FAQ
What is the clamping voltage of the 1.5SMC68A-M3/57T under a 10/1000 µs surge?
The 1.5SMC68A-M3/57T has a maximum clamping voltage (VC) of 92.0 V at 16.3 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per Fig. 1 and Fig. 3 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The 1.5SMC68A-M3/57T maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C) with minimal drift.
Is the 1.5SMC68A-M3/57T AEC-Q101 qualified?
The 1.5SMC68A-M3/57T itself is not AEC-Q101 qualified; however, the HM3 variant (e.g., 1.5SMC68AHM3_A/H) is explicitly qualified per AEC-Q101. The M3 suffix indicates halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance, but qualification requires the HM3 prefix and revision code (e.g., "_A"). For automotive production, specify 1.5SMC68AHM3_A/H or equivalent to ensure certified reliability.
What does the "/57T" suffix mean in 1.5SMC68A-M3/57T?
The "/57T" suffix denotes packaging: 7-inch diameter plastic tape and reel, with 850 units per reel. This format is optimized for high-speed pick-and-place assembly. The "57T" code aligns with Vishay's ordering nomenclature in document 88303 and confirms compatibility with standard SMT feeders. Alternate formats include "/9AT" (13-inch reel, 3500 units) for high-volume production runs.
How does the 1.5SMC68A-M3/57T compare to bidirectional TVS diodes like 1.5SMC68CA?
The 1.5SMC68A-M3/57T is unidirectional and features a cathode band for polarity-sensitive placement, whereas 1.5SMC68CA is bidirectional with symmetric clamping in both directions. The 1.5SMC68A-M3/57T offers lower leakage (<1 µA at 58.1 V) and tighter VBR tolerance (64.6–71.4 V) than its bidirectional counterpart (VBR = 64.6–71.4 V, but specified for both polarities). Use 1.5SMC68A-M3/57T for DC-biased lines; choose 1.5SMC68CA only for AC-coupled or floating signal paths.
What is the thermal resistance of the 1.5SMC68A-M3/57T, and how does it affect layout?
The 1.5SMC68A-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal, as defined in Fig. 2 of document 88303. To maintain safe operation at full 1500 W surge rating, PCB layout must replicate this pad area - reducing pad size increases RθJA, causing junction temperature to exceed 150 °C during repeated surges. No additional heatsinking is required for single-event protection.
1.5SMC68A-M3/57T 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 16.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC68A-M3/57T FAQ
1.How can I place an order for 1.5SMC68A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68A-M3/57T 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 1.5SMC68A-M3/57T reliable?
The price and inventory of 1.5SMC68A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC68A-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC68A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68A-M3/57T?
1.5SMC68A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68A-M3/57T 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 1.5SMC68A-M3/57T?
For technical support, including 1.5SMC68A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68A-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC68A-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68A-M3/57T 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 1.5SMC68A-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC68A-M3/57T?
All 1.5SMC68A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68A-M3/57T, 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 1.5SMC68A-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC68A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC68A-M3/57T 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 …
