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Vishay General Semiconductor - Diodes Division SA36CHE3/73
- Part No.:
- SA36CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA36CHE3/73.pdf
- Description:
- TVS DIODE 36VWM 64.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,483
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Product details
Overview
SA36CHE3/73 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for clamping voltage transients on signal or power lines. It features a 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 µs), 58.1 V maximum clamping voltage at 8.6 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA36CHE3/73 datasheet, SA36CHE3/73 pinout, SA36CHE3/73 application, or SA36CHE3/73 equivalent, this device is selected for robust ESD and surge protection in automotive sensor interfaces, industrial I/O lines, and telecom power rails where bidirectional clamping, low leakage (<1.0 µA at VWM), and high surge current capability are required.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with identical VBR min/max (40.0–44.2 V), clamping behavior (VC = 58.1 V @ IPPM = 8.6 A), and thermal derating (TJ max = 175 °C). Its glass-passivated junction ensures stable breakdown and fast response (<1 ns) to transients induced by inductive switching or lightning surges.
Designed for repetitive surge conditions (duty cycle ≤0.01 %), it delivers 500 W peak pulse power per 10/1000 µs waveform and sustains 3.0 W steady-state power at TL = 75 °C. The DO-204AC package supports manual or automated assembly with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (min/max) | 40.0 / 44.2 V at IT = 1 mA - Ensures reliable turn-on within tight tolerance band for predictable transient suppression |
| VC @ IPPM | 58.1 V at 8.6 A - Clamped voltage seen by protected circuit during worst-case 10/1000 µs surge |
| PPPM | 500 W - Peak transient energy handling capacity under standardized surge waveform |
| ID @ VWM | <1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +175 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0. Bi-directional construction has no polarity marking; terminals are non-polarized and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical bidirectional clamping behavior - either lead may connect to line or ground without functional impact |
| Lead 1 / Lead 2 | Mounting interface | Matte tin-plated, solderable per J-STD-002; supports wave/solder reflow up to 275 °C for 10 s |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift |
| 500 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in automotive load-dump and industrial motor-switching events |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD ±15 kV contact discharge) |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance - critical for long-term reliability in vibration-prone systems |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and ground to limit transient voltage to safe levels. Use Value: Maintains signal fidelity during 500 W surges while adding <1.0 µA leakage - no impact on sensor offset or ADC accuracy. |
Use Scenario: Shielding digital input modules in programmable logic controllers from inductive kickback of solenoid valves and relay coils. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing 10/1000 µs transients before they reach isolation barriers or microcontroller GPIOs. Use Value: Clamps to 58.1 V within nanoseconds, preventing latch-up or permanent damage to 24 V-rated input circuitry. |
| Telecom Power Rail Protection | Consumer Appliance Motor Control |
Use Scenario: Safeguarding 48 V DC power inputs in VoIP phones and base station power supplies against lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of DC/DC converters and LDOs. Use Value: Handles repeated 500 W pulses with <0.01 % duty cycle - supports compliance with IEC 61000-4-5 Level 3 (1 kV/2 kV) |
Use Scenario: Protecting microcontroller reset lines and gate drivers in washing machine motor inverters from commutation spikes. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) bi-directional clamp on low-voltage control signals. Use Value: Prevents false resets or MOSFET shoot-through without loading high-speed PWM timing paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Same VWM (36 V), lower PPPM (400 W), SMA package (smaller footprint, lower thermal mass) | Better suited for space-constrained PCBs but requires tighter thermal management due to lower PD (1.0 W) | Select SMAJ36CA when board area is limited and surge duty cycle is light; SA36CHE3/73 preferred for higher thermal endurance. |
| 1.5KE36CA | Same VWM (36 V), higher PPPM (1500 W), DO-204AL (DO-41) package, higher VF and larger size | Supports heavier surge loads but introduces longer lead inductance - less effective for fast ESD events | Choose 1.5KE36CA for legacy designs requiring higher single-pulse energy; SA36CHE3/73 offers superior response time and AEC-Q101 validation. |
Compared with SMAJ36CA and 1.5KE36CA, SA36CHE3/73 delivers optimal balance of automotive qualification, 500 W surge rating, and DO-15 manufacturability - making it the preferred choice for new automotive and industrial designs requiring verified reliability and consistent clamping performance.
Availability
SA36CHE3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power rail protection requiring stable component supply and long-term lifecycle support.
Supply support for SA36CHE3/73 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, and protection devices with emphasis on reliability and application-specific performance.
The SAxxCH series is part of Vishay's TRANSZORB® TVS family, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom systems where bidirectional clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SA36CHE3/73 at its rated peak pulse current?
The SA36CHE3/73 exhibits a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current (IPPM) of 8.6 A under the standard 10/1000 µs waveform. This value is measured per the test conditions defined in Vishay document 88378 and ensures downstream circuitry remains below safe voltage thresholds during surge events. The SA36CHE3/73 maintains this clamping performance across its full operating temperature range.
Is SA36CHE3/73 suitable for automotive applications?
Yes, SA36CHE3/73 is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. The HE3 suffix denotes RoHS compliance and JESD 201 Class 2 whisker resistance - critical for under-hood reliability. Its 175 °C maximum junction temperature and robust surge handling align with ISO 16750-2 and ISO 7637-2 requirements.
How does the bi-directional nature of SA36CHE3/73 affect its circuit implementation?
The SA36CHE3/73 has no polarity marking and functions identically in both directions, allowing direct placement between any two nodes requiring bidirectional overvoltage protection - such as differential signal pairs or AC-coupled power rails. Unlike uni-directional TVS diodes, it eliminates orientation errors during assembly and simplifies layout by removing the need for cathode alignment checks. Its symmetrical VBR and VC ensure consistent clamping regardless of transient polarity.
What is the maximum reverse leakage current of SA36CHE3/73 at its stand-off voltage?
At its rated stand-off voltage (VWM) of 36 V and TA = 25 °C, the SA36CHE3/73 guarantees a maximum reverse leakage current (ID) of 1.0 µA. This ultra-low leakage preserves signal integrity in high-impedance sensor circuits and avoids unnecessary power drain in battery-operated systems. Leakage remains well below 5 µA even at elevated temperatures up to 125 °C, as confirmed by Vishay's derating curves.
Can SA36CHE3/73 be used in place of a uni-directional TVS like SA36A?
No - SA36CHE3/73 is bi-directional and cannot replace uni-directional SA36A in circuits requiring forward conduction or DC blocking in one direction only. While both share the same VWM and VBR range, SA36A conducts forward current up to 70 A (IFSM) and has a 3.5 V VF at 100 A, whereas SA36CHE3/73 has no specified VF or IFSM due to its symmetrical structure. Substitution requires full circuit revalidation for polarity-sensitive topologies.
SA36CHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 64.3V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA36CHE3/73 FAQ
1.How can I place an order for SA36CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA36CHE3/73 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 SA36CHE3/73 reliable?
The price and inventory of SA36CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA36CHE3/73 is usually 5 days.
3.What payment methods are accepted for SA36CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA36CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA36CHE3/73?
SA36CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA36CHE3/73 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 SA36CHE3/73?
For technical support, including SA36CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA36CHE3/73 requirements.
6.How does Aetrix verify that SA36CHE3/73 is sourced from the original manufacturer or authorized distributors?
All SA36CHE3/73 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 SA36CHE3/73 meets industry standards.
7.What is the process for return or replacement of SA36CHE3/73?
All SA36CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA36CHE3/73, 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 SA36CHE3/73 part is unused and in its original packaging.
Return procedure for SA36CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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