My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC68CAHM3/H
- Part No.:
- 1.5SMC68CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68CAHM3/H.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,818
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC68CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 64.6 V to 71.4 V breakdown voltage (VBR), 58.1 V standoff voltage (VWM), 1500 W peak pulse power (10/1000 µs), 16.3 A peak pulse current (IPPM), and clamps to ≤92.0 V at rated surge. It is used in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the 1.5SMC68CAHM3/H datasheet, 1.5SMC68CAHM3/H pinout, 1.5SMC68CAHM3/H application, or 1.5SMC68CAHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMC (DO-214AB) package details, clamping performance under standardized transients, and direct alternative part comparisons - all confirmed from Vishay's official 1.5SMC Series specification document (Rev. 09-Mar-2026, Doc. #88303).
Technical Context
The 1.5SMC68CAHM3/H operates as a bidirectional avalanche diode, symmetrically clamping voltage surges above ±92.0 V while maintaining <1.0 µA leakage at 58.1 V. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for protecting sensitive downstream ICs from ESD and lightning-induced transients.
Rated for -65 °C to +150 °C operation and qualified to AEC-Q101, it supports automotive-grade reliability with halogen-free, RoHS-compliant construction (HM3 suffix), MSL Level 1 moisture sensitivity, and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V - Ensures reliable avalanche conduction onset within tight tolerance for predictable clamping behavior |
| VWM | 58.1 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe working margin below VBR |
| VC @ IPPM | ≤92.0 V - Clamped voltage during 16.3 A 10/1000 µs surge; determines maximum stress imposed on protected circuitry |
| PPPM | 1500 W - Peak transient power handling capability per standard 10/1000 µs waveform; validates robustness against IEC 61000-4-5 surges |
| IPPM | 16.3 A - Peak surge current supported at VC; directly correlates to energy absorption capacity (≈15.3 J) |
| TJ max. | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments and high-ambient industrial settings |
| AEC-Q101 | Qualified - Confirmed reliability for automotive applications including engine control modules, ADAS sensors, and body electronics |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H). Complies with UL 94 V-0 flammability rating and J-STD-020 MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | Connected to protected line (e.g., CAN_H or RS-485 A); no polarity marking required for bidirectional devices |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | Connected to protected line (e.g., CAN_L or RS-485 B); symmetrical to Anode - identical clamping in both directions |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential or AC-coupled lines without polarity concerns (e.g., USB D+/D-, CAN bus) |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surge events when mounted per recommended 8.0 mm × 8.0 mm copper pads |
| Glass passivated junction | Ensures stable VBR and low leakage over temperature and lifetime; eliminates risk of junction degradation from humidity or contamination |
| AEC-Q101 qualified (HM3) | Validated for automotive use including thermal cycling, mechanical shock, and board-level reliability testing per AEC standards |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements for automotive and industrial OEMs; supports sustainable manufacturing |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units and chassis modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across sensor supply and ground or signal pair to clamp transients before they reach precision ADC inputs or op-amp buffers. Use Value: Maintains signal integrity by limiting voltage excursions to ≤92.0 V during 100 V/100 ms load dump events, preventing latch-up or permanent damage to 3.3 V/5 V sensor signal conditioning ICs. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) in factory automation PLCs and motor drives exposed to ground potential differences and EFT bursts. IC Role / Device Role / Timing Role: Placed differentially between A and B lines and common-mode across A-GND/B-GND to suppress common- and differential-mode surges simultaneously. Use Value: Enables uninterrupted communication during 4 kV IEC 61000-4-4 EFT events by clamping line-to-line voltage to ≤92.0 V, preserving data integrity and avoiding bus lockup. |
| Telecom Line Surge Suppression | Consumer Power Adapter Input |
|
Use Scenario: Front-end protection of DSL or POTS line interface circuits in residential gateways and VoIP adapters subjected to lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Bidirectional TVS connected across tip/ring pair to absorb longitudinal mode surges up to 1500 W without degrading insertion loss or return loss. Use Value: Prevents catastrophic failure of line driver amplifiers and transformer-coupled isolation stages during 10/700 µs telecom surges by limiting peak voltage to ≤92.0 V. |
Use Scenario: Secondary-side transient suppression on 12 V DC outputs of wall-mounted AC/DC adapters for smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Mounted across output rails to protect downstream PMICs and microcontrollers from reverse-polarity connection errors and capacitor discharge spikes. Use Value: Absorbs up to 16.3 A surge current without degradation, ensuring adapter output remains within ±5% regulation during 1000 µs transients - critical for USB-PD and battery charging ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | Lower peak power (600 W), smaller SMB package (DO-214AA), VC = 103 V at 9.7 A | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy surges in space-constrained consumer designs | Select when board area is constrained and surge threat level is ≤1 kV; verify thermal derating for repeated events |
| 1.5KE68CA | Through-hole TO-204AE (DO-41) package, same VBR/VC, but slower thermal response and no AEC-Q101 qualification | Lacks automotive qualification and surface-mount compatibility; requires wave soldering and larger PCB real estate | Choose only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency |
Compared with 1.5SMC68CAHM3/H, SMBJ64CA offers reduced footprint but sacrifices 60% peak power handling and automotive qualification, while 1.5KE68CA retains electrical equivalence but abandons SMT manufacturability and AEC-Q101 validation - making 1.5SMC68CAHM3/H the optimal choice for volume automotive and industrial surface-mount applications demanding 1500 W surge immunity.
Availability
1.5SMC68CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 interface hardening, and telecom line surge suppression requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for 1.5SMC68CAHM3/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 reliability, efficiency, and application-specific optimization.
The 1.5SMC Series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against ESD, EFT, and lightning surges is non-negotiable.
FAQ
What is the clamping voltage of the 1.5SMC68CAHM3/H under a 10/1000 µs surge?
The 1.5SMC68CAHM3/H clamps to a maximum of 92.0 V when subjected to its rated 16.3 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay's 1.5SMC Series datasheet (Doc. #88303) and defines the upper voltage limit imposed on protected circuitry during surge events. The 1.5SMC68CAHM3/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C) due to its stable avalanche characteristics.
Is the 1.5SMC68CAHM3/H qualified for automotive applications?
Yes, the 1.5SMC68CAHM3/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's 1.5SMC Series datasheet (Rev. 09-Mar-2026). This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock - validating its suitability for under-hood and chassis-mounted automotive electronics such as ADAS sensors, body control modules, and infotainment power supplies. The 1.5SMC68CAHM3/H also meets JESD201 Class 2 whisker resistance and MSL Level 1 handling requirements.
What does the "CA" suffix indicate in 1.5SMC68CAHM3/H?
The "CA" suffix in 1.5SMC68CAHM3/H denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical VBR, VWM, and VC values for positive and negative surges. This eliminates the need for polarity-aware placement on PCBs and makes the 1.5SMC68CAHM3/H ideal for protecting AC-coupled or differential signal lines like CAN, RS-485, and Ethernet PHY interfaces. Unidirectional variants use "A" only (e.g., 1.5SMC68AHM3/H).
What is the standoff voltage (VWM) of the 1.5SMC68CAHM3/H?
The standoff voltage (VWM) of the 1.5SMC68CAHM3/H is 58.1 V - the maximum DC or continuous reverse operating voltage that can be applied without exceeding 1.0 µA leakage current. This parameter establishes the design margin between normal operating conditions and avalanche conduction onset (VBR = 64.6–71.4 V), ensuring the 1.5SMC68CAHM3/H remains inactive during nominal system operation while responding instantly to overvoltage events exceeding VWM.
Does the 1.5SMC68CAHM3/H require a heatsink for standard operation?
No, the 1.5SMC68CAHM3/H does not require an external heatsink for transient suppression duty cycles (e.g., single or infrequent 10/1000 µs surges), as its 1500 W peak power rating is defined under standardized test conditions with 8.0 mm × 8.0 mm copper pads per terminal. However, for repetitive surge events or continuous power dissipation >6.5 W (its rated DC power, PD), thermal management via PCB copper area or localized heatsinking becomes necessary to maintain junction temperature below 150 °C. The 1.5SMC68CAHM3/H's RθJA of 75 °C/W reflects its natural convection performance on standard FR-4.
1.5SMC68CAHM3/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:
- -
- Bidirectional Channels:
- 1
- 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:
- 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)
1.5SMC68CAHM3/H FAQ
1.How can I place an order for 1.5SMC68CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68CAHM3/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 1.5SMC68CAHM3/H reliable?
The price and inventory of 1.5SMC68CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC68CAHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC68CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68CAHM3/H?
1.5SMC68CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68CAHM3/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 1.5SMC68CAHM3/H?
For technical support, including 1.5SMC68CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68CAHM3/H requirements.
6.How does Aetrix verify that 1.5SMC68CAHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68CAHM3/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 1.5SMC68CAHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC68CAHM3/H?
All 1.5SMC68CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68CAHM3/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 1.5SMC68CAHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC68CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC68CAHM3/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 …
