My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMF36A-HE3-08
- Part No.:
- SMF36A-HE3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF36A-HE3-08.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,634
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMF36A-HE3-08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for transient voltage suppression in high-speed data lines and power rails. It features a 36 V stand-off voltage (VRWM), 40–44.3 V reverse breakdown range (VBR), 58.1 V maximum clamping voltage at 3.4 A peak pulse current, ±30 kV IEC 61000-4-2 ESD immunity, and 200 W peak pulse power (10/1000 μs).
For engineers reviewing the SMF36A-HE3-08 datasheet, SMF36A-HE3-08 pinout, SMF36A-HE3-08 application, or SMF36A-HE3-08 equivalent, this device is selected for robust electrostatic discharge protection in automotive infotainment interfaces, USB 2.0 signal lines, and industrial sensor I/O where low capacitance (178 pF at 0 V), fast response, and AEC-Q101 qualification are required.
Technical Context
This diode operates as a unidirectional TVS device with a single protection path, leveraging silicon avalanche technology to clamp transients above its breakdown threshold. Its low incremental surge resistance ensures minimal voltage overshoot during fast-rising ESD events, while its SOD-123W-compatible DO-219AB package supports automated assembly and thermal performance up to 175 °C junction temperature.
The device complies with IEC 61000-4-2 (±30 kV contact/air) and AEC-Q101 Class H3B (>8 kV HBM), and is rated for 1000 W peak pulse power under IEC 61000-4-5 (8/20 μs). Its 178 pF capacitance at 0 V and 0.1 μA max reverse leakage at VRWM make it suitable for signal integrity–sensitive applications below 100 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 36 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe operating margin for 33–36 V nominal rails. |
| Breakdown Voltage (VBR) | 40–44.3 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above system operating voltage. |
| Clamping Voltage (VC) | 58.1 V at 3.4 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; enables downstream IC survival. |
| Capacitance (CD) | 178 pF at 0 V, 1 MHz - Low enough for USB 2.0 and CAN FD signal integrity; measured per standard test conditions. |
| ESD Rating | ±30 kV contact & air (IEC 61000-4-2) - Full compliance with Level 4 ESD immunity for end-equipment certification. |
| Package | DO-219AB (SOD-123W compatible) - 3.9 × 1.9 × 1.08 mm low-profile outline enabling high-density PCB layout and reflow compatibility. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and HBM testing. |
Pinout & Package
SMF36A-HE3-08 uses the DO-219AB (SOD-123W-compatible) surface-mount package: cathode-marked anode-cathode configuration in a 2-terminal, single-diode layout. Dimensions: 3.9 mm length × 1.9 mm width × 1.08 mm height; molded compound UL 94 V-0 rated; MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Input/Line side | Connected to signal or power line requiring protection; conducts during forward-biased surge events. |
| Cathode (bar-marked end) | Ground/reference side | Connected to system ground or low-impedance return path; defines clamping reference and polarity of protection. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables sustained clamping of repetitive ESD or lightning-induced surges without degradation in compact layouts. |
| "Low Noise" fast-response technology | Sub-nanosecond response time ensures clamping activation before sensitive ICs experience overvoltage stress. |
| ±30 kV IEC 61000-4-2 ESD immunity | Meets highest industrial and automotive ESD test requirements without external shielding or filtering. |
| AEC-Q101 qualified | Validated for automotive under-hood and infotainment environments including thermal cycling and humidity bias. |
| 178 pF capacitance at 0 V | Preserves signal rise/fall times on 480 Mbps USB 2.0 and 5 Mbps CAN FD buses without added jitter or attenuation. |
Applications
| Automotive Infotainment Display Interface | Industrial RS-485 Sensor Node |
|---|---|
|
Use Scenario: Protecting LVDS or FPD-Link III video data lines between head unit and TFT display against ESD during service or environmental exposure. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed directly at connector entry point to shunt transients before reaching serializer/deserializer ICs. Use Value: 58.1 V clamping voltage ensures downstream SerDes ICs (rated ≤ 60 V abs max) remain within safe operating area during ±30 kV contact discharge. |
Use Scenario: Safeguarding RS-485 transceiver I/O pins in factory-floor temperature sensors exposed to handling ESD and cable-induced surges. IC Role / Device Role / Timing Role: Line-side transient suppressor on A/B differential pairs, referenced to local ground plane with minimal trace inductance. Use Value: 178 pF capacitance avoids signal distortion on 10 Mbps RS-485 links; DO-219AB footprint allows placement within 2 mm of connector. |
| USB 2.0 Host Port Protection | DC Power Rail Surge Suppression |
|
Use Scenario: ESD protection for D+ and D− lines on embedded USB host controllers in medical diagnostic devices. IC Role / Device Role / Timing Role: Dual-diode implementation (two SMF36A-HE3-08 units) on each data line, grounded via shortest possible path to chassis ground. Use Value: Low 178 pF capacitance prevents USB 2.0 eye diagram closure; ±30 kV air discharge rating exceeds IEC 61000-4-2 requirement for Class B equipment. |
Use Scenario: Clamping induced surges on 24 V DC input rails feeding PLC I/O modules subjected to inductive load switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rail and ground, sized to absorb 200 W pulses without thermal runaway. Use Value: 36 V VRWM matches 24 V nominal rail with 50 % safety margin; 1000 W rating (8/20 μs) handles IEC 61000-4-5 Combination Wave Generator surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | DO-214AC (SMA) package; 36 V VRWM; 58.1 V VC at 3.5 A; 200 W rating; same VBR range but 220 pF capacitance. | Higher 220 pF limits use in >480 Mbps interfaces; larger SMA footprint increases board area and parasitic inductance. | Select when legacy SMA layout exists or higher thermal mass is needed; avoid for high-speed data lines. |
| TPD2E001DRYR | 2-channel bidirectional array in SOT-563; 3.6 V VRWM; 10 V VC; 0.8 pF per channel; not AEC-Q101 qualified. | Designed for low-voltage logic-level I/O (e.g., GPIO, I²C); incompatible with 24–36 V rail protection due to low VRWM. | Choose only for sub-5 V digital interfaces requiring ultra-low capacitance; not a functional substitute for SMF36A-HE3-08's voltage range. |
Compared with SMAJ36A-E3/57T and TPD2E001DRYR, SMF36A-HE3-08 uniquely balances 36 V standoff, 178 pF capacitance, AEC-Q101 qualification, and DO-219AB space efficiency-making it optimal for automotive and industrial 24–36 V signal/power line protection where size, speed, and reliability intersect.
Availability
SMF36A-HE3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial RS-485 networks, and USB 2.0 host ports requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant ESD protection.
Supply support for SMF36A-HE3-08 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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMF series targets high-speed, space-constrained ESD protection applications with emphasis on AEC-Q101 qualification, low capacitance, and DO-219AB packaging for next-generation automotive and industrial electronics.
FAQ
What is the maximum clamping voltage of the SMF36A-HE3-08 under standard IEC 61000-4-5 surge conditions?
The SMF36A-HE3-08 has a maximum clamping voltage of 58.1 V at 3.4 A peak pulse current using the 10/1000 μs waveform. Under IEC 61000-4-5 (8/20 μs), its 1000 W peak pulse power rating implies clamping remains within safe limits for 24–36 V systems, though exact VC at 8/20 μs is not specified in the datasheet. Engineers should verify system-level clamping margins using the 10/1000 μs value as the primary design reference for SMF36A-HE3-08.
Is SMF36A-HE3-08 suitable for bidirectional signal lines like RS-485 or CAN?
No - SMF36A-HE3-08 is a unidirectional ESD protection diode, optimized for single-polarity rail or signal-line protection. For bidirectional differential buses such as RS-485 or CAN, a bidirectional TVS pair or dedicated dual-channel device is required. The SMF36A-HE3-08 must be used with proper grounding topology and polarity alignment; using it on bidirectional lines without complementary protection risks incomplete clamping during negative transients.
Does SMF36A-HE3-08 meet AEC-Q101 requirements for automotive under-hood applications?
Yes - SMF36A-HE3-08 is explicitly AEC-Q101 qualified, including testing for temperature cycling, high-temperature operating life, and human body model ESD (>8 kV). Its -65 °C to +175 °C operating temperature range and DO-219AB package with MSL level 1 rating support under-hood deployment in engine control units, body controllers, and infotainment power supplies where SMF36A-HE3-08 provides certified transient resilience.
What is the typical capacitance of SMF36A-HE3-08 at 36 V reverse bias?
The typical capacitance of SMF36A-HE3-08 is 178 pF at 0 V reverse bias and 1 MHz. At its full 36 V VRWM, capacitance drops significantly - per Figure 5 in the Vishay datasheet, capacitance falls to approximately 40–50 pF at 36 V. This voltage-dependent reduction is critical for maintaining signal integrity on high-impedance lines; designers must reference the CD vs. VR curve when evaluating SMF36A-HE3-08 for constant-bias applications.
Can SMF36A-HE3-08 replace SMAJ36A in an existing DO-214AC layout?
No - SMF36A-HE3-08 uses the DO-219AB (SOD-123W-compatible) package, which is physically smaller (3.9 × 1.9 mm) than DO-214AC (4.5 × 2.7 mm) and has different pad geometry. Direct replacement would require PCB redesign. While both share 36 V VRWM and similar clamping, the SMF36A-HE3-08 offers lower capacitance (178 pF vs. 220 pF) and AEC-Q101 qualification - advantages that justify layout revision when upgrading to SMF36A-HE3-08.
SMF36A-HE3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-219AB
- Series:
- eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 3.4A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 178pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF36A-HE3-08 FAQ
1.How can I place an order for SMF36A-HE3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF36A-HE3-08 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 SMF36A-HE3-08 reliable?
The price and inventory of SMF36A-HE3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF36A-HE3-08 is usually 5 days.
3.What payment methods are accepted for SMF36A-HE3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF36A-HE3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF36A-HE3-08?
SMF36A-HE3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF36A-HE3-08 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 SMF36A-HE3-08?
For technical support, including SMF36A-HE3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF36A-HE3-08 requirements.
6.How does Aetrix verify that SMF36A-HE3-08 is sourced from the original manufacturer or authorized distributors?
All SMF36A-HE3-08 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 SMF36A-HE3-08 meets industry standards.
7.What is the process for return or replacement of SMF36A-HE3-08?
All SMF36A-HE3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF36A-HE3-08, 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 SMF36A-HE3-08 part is unused and in its original packaging.
Return procedure for SMF36A-HE3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF36A-HE3-08 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 …
