My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCG85AHE3/57T
- Part No.:
- SMCG85AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG85AHE3/57T.pdf
- Description:
- TVS DIODE 85VWM 137VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,440
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCG85AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMCG (DO-215AB) package, rated for 85 V stand-off voltage (VWM), 94.4–104 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and 10.9 A peak pulse current (IPPM) at 137 V clamping voltage (VC). It protects MOSFETs and signal lines in automotive powertrain control modules against inductive switching transients.
For engineers reviewing the SMCG85AHE3/57T datasheet, SMCG85AHE3/57T pinout, SMCG85AHE3/57T application, or SMCG85AHE3/57T equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD rails, AEC-Q101 qualification for automotive use, 1500 W surge capability under 10/1000 µs waveform, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional shunt clamp, activating when reverse voltage exceeds its specified breakdown range (94.4–104 V at 1 mA test current). Its glass-passivated junction ensures stable leakage performance (<1.0 µA at 85 V), while low incremental surge resistance enables effective energy diversion during fast transients.
Designed for automotive-grade reliability, SMCG85AHE3/57T meets AEC-Q101 stress testing requirements and is qualified for operation from –55 °C to +150 °C junction temperature. Its DO-215AB package supports MSL Level 1 handling and reflow up to 260 °C peak, with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 94.4 V / 104 V at 1 mA - Confirmed breakdown threshold range defining turn-on precision |
| VC @ IPPM | 137 V at 10.9 A - Clamped voltage during full 1500 W transient, limiting stress on downstream components |
| PPPM | 1500 W - Peak surge power dissipation capability under standardized 10/1000 µs waveform |
| ID @ VWM | <1.0 µA - Reverse leakage current ensuring minimal standby power loss in high-impedance circuits |
| TJ max. | +150 °C - Maximum junction temperature enabling use in under-hood automotive environments |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient on recommended 8.0 mm × 8.0 mm pad layout |
Pinout & Package
Package: SMCG (DO-215AB), surface-mount gull-wing configuration with cathode band marking. Dimensions: 7.87 mm × 9.64 mm × 2.41 mm (L × W × H), lead pitch 3.17 mm, compliant with JEDEC MO-215.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (cathode-banded end is opposite) | Connected to system ground or low-side reference in unidirectional protection configurations |
| Cathode | Reverse-biased clamping terminal (marked with band) | Connected to protected line (e.g., 12 V rail or sensor output) to divert overvoltage to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including powertrain and body electronics per stress test requirements |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage across temperature and lifetime |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns (peak 260 °C) |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage overshoot during surge events, improving margin for 100 V-rated components |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 |
Applications
| Engine Control Unit (ECU) Power Input Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 12 V supply input of engine control units from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input to clamp surges above 85 V. Use Value: Limits clamped voltage to 137 V, preserving margin below 150 V input rating of downstream regulators and microcontrollers. | Use Scenario: Shields analog outputs of crankshaft position sensors from ESD and inductive kickback in wiring harnesses. IC Role / Device Role / Timing Role: TVS connected between sensor signal line and chassis ground to suppress sub-100 ns transients. Use Value: Sub-1.0 µA leakage at 85 V prevents DC offset errors in precision ratiometric sensor interfaces. |
| On-Board Charger (OBC) DC Link Protection | Electric Power Steering (EPS) Motor Driver Protection |
Use Scenario: Safeguards high-voltage DC link monitoring circuitry in 400 V OBCs against switching noise and fault-induced spikes. IC Role / Device Role / Timing Role: Mounted at voltage divider input of isolated ADC to prevent saturation during 1500 W surge events. Use Value: 1500 W PPPM rating handles repetitive transients common in SiC-based PFC stages without degradation. | Use Scenario: Protects gate drivers and current-sense amplifiers in EPS motor inverters exposed to PWM-induced dv/dt coupling. IC Role / Device Role / Timing Role: Placed across half-bridge source terminals to clamp shoot-through induced voltage spikes. Use Value: 10.9 A IPPM and 137 V VC ensure reliable suppression of 600 V bus transients without latch-up in driver 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 |
|---|---|---|---|
| SMAJ85A-E3/57T | Same VWM (85 V), lower PPPM (400 W), SMA (DO-214AC) package, RθJA = 110 °C/W | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a compliance | Select only for cost-sensitive consumer applications where 1500 W surge immunity is not required |
| SMCJ85AHE3/57T | Same VWM (85 V), identical PPPM (1500 W), but larger SMC (DO-214AB) package (10.3 mm × 8.6 mm) | Requires PCB area increase (~30 %); higher thermal mass slows response by <100 ps | Prefer when existing layout accommodates SMC footprint and higher mounting robustness is needed |
Compared with SMAJ85A-E3/57T and SMCJ85AHE3/57T, SMCG85AHE3/57T delivers identical surge rating in a smaller DO-215AB footprint with superior thermal resistance (75 vs. 110 °C/W) and automotive qualification-making it optimal for space-constrained, high-reliability automotive modules.
Availability
SMCG85AHE3/57T is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drives, and telecom infrastructure requiring stable component supply with AEC-Q101 assurance and 1500 W transient immunity.
Supply support for SMCG85AHE3/57T 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with focus on high-reliability, automotive-qualified components.
The SMCG series targets automotive and industrial transient suppression applications, delivering AEC-Q101-compliant TVS diodes in compact DO-215AB packages optimized for automated assembly and under-hood thermal environments.
FAQ
What is the clamping voltage of SMCG85AHE3/57T under maximum surge conditions?
The SMCG85AHE3/57T clamps to 137 V when subjected to its rated 10.9 A peak pulse current (IPPM), corresponding to a 1500 W transient under the standard 10/1000 µs waveform. This value is measured per Figure 3 in Vishay document 88457 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Is SMCG85AHE3/57T qualified for automotive applications?
Yes, SMCG85AHE3/57T carries the HE3 suffix indicating AEC-Q101 qualification. It has passed stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing, making it suitable for automotive powertrain, chassis, and body electronics per industry reliability standards.
What does the "57T" in SMCG85AHE3/57T indicate?
The "57T" suffix denotes the preferred packaging format: 7-inch diameter plastic tape and reel containing 850 units. This format is optimized for high-speed pick-and-place equipment and complies with EIA-481-D standards for automated SMT assembly lines.
How does the SMCG (DO-215AB) package compare thermally to SMA or SMC packages?
SMCG85AHE3/57T achieves a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W on 8.0 mm × 8.0 mm copper pads-significantly lower than SMAJ85A-E3/57T (110 °C/W) and competitive with SMCJ85AHE3/57T (65 °C/W). This enables higher sustained power handling in compact layouts without additional heatsinking.
Can SMCG85AHE3/57T be used in bidirectional configurations?
No-SMCG85AHE3/57T is a unidirectional TVS diode, identified by the "A" (not "CA") suffix. Bidirectional variants such as SMCG85CA require separate ordering and exhibit symmetrical clamping in both polarities; using SMCG85AHE3/57T in reverse-biased AC applications would result in forward conduction and failure.
SMCG85AHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 85V
- Voltage - Breakdown (Min):
- 94.4V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 10.9A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG85AHE3/57T FAQ
1.How can I place an order for SMCG85AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG85AHE3/57T 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 SMCG85AHE3/57T reliable?
The price and inventory of SMCG85AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG85AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG85AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG85AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG85AHE3/57T?
SMCG85AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG85AHE3/57T 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 SMCG85AHE3/57T?
For technical support, including SMCG85AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG85AHE3/57T requirements.
6.How does Aetrix verify that SMCG85AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG85AHE3/57T 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 SMCG85AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG85AHE3/57T?
All SMCG85AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG85AHE3/57T, 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 SMCG85AHE3/57T part is unused and in its original packaging.
Return procedure for SMCG85AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG85AHE3/57T 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 …
