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Broadcom Limited ASSR-302C-002E
- Part No.:
- ASSR-302C-002E
- Manufacturer:
- Broadcom Limited
- Category:
- Solid State Relays (SSR)
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ASSR-302C-002E.pdf
- Description:
- SSR RELAY SPST-NO 50MA 0-250V
- Quantity:
- Payment:
- Shipping:
Inventory:1,072
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Product details
Overview
ASSR-302C-002E from Broadcom (formerly Avago) is a dual-channel, normally-off, solid-state SPST relay in a 300-mil DIP-8 package, rated for 250V output withstand voltage, 50Ω typical on-resistance, and 15pF off-capacitance. It delivers fast switching (70μs turn-on/turn-off), ultra-low off-state leakage (0.3nA typ), and high input-output isolation (3750 Vrms), targeting automated test equipment signal routing.
For engineers reviewing the ASSR-302C-002E datasheet, pinout, applications, or equivalent options, key selection criteria include dual-channel Form A replacement capability, low C×R (340 pF·Ω), RoHS-compliant tube packaging, and verified performance across –40°C to +85°C.
Technical Context
The ASSR-302C-002E integrates two independent optically isolated channels, each combining an AlGaAs LED input stage with a photovoltaic diode array and MOSFET driver to control discrete high-voltage MOSFETs. Each channel switches bi-directionally with ≤0.8V input cutoff voltage and ≥1mA turn-on threshold.
Its architecture achieves 3750 Vrms input-output isolation per UL1577, 7.4 mm creepage, and 7.1 mm clearance - validated under CSA Component Acceptance Notice #5. The device operates as a two-terminal switch per channel (pins 1–4 and 5–8 internally shorted), supporting true bidirectional signal handling without polarity constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Withstand Voltage | 250 V - supports safe switching of signals up to ±250V DC or peak AC in test instrumentation |
| On-Resistance | 34 Ω typical - ensures minimal insertion loss and voltage drop at 50 mA load current |
| Off-Capacitance | 15 pF max - enables high-frequency signal integrity in multiplexer and data acquisition paths |
| Turn-On/Off Time | 0.07 ms typical - meets sub-100 μs timing requirements for high-throughput ATE scanning |
| Input-Output Isolation | 3750 Vrms - satisfies safety-critical insulation requirements for Class I equipment per UL1577 |
| Off-State Leakage | 0.3 nA typical - reduces measurement error in high-impedance sensor and precision analog circuits |
| C × R Product | 340 pF·Ω typical - minimizes settling time and crosstalk in fast-switching multiplexed systems |
Pinout & Package
ASSR-302C-002E uses a 300-mil DIP-8 package with gull-wing-compatible leadframe geometry (0.100" pitch). Pin numbering follows standard DIP convention: pins 1–4 form Channel 1 input/output pair; pins 5–8 form Channel 2 input/output pair. Internally, pins 1–4 are shorted as one terminal; pins 5–8 are shorted as the other terminal per channel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3, 4 | Channel 1 Anode/Cathode & Drain/Source | Internally shorted - forms one side of SPST switch; connects to LED anode/cathode and MOSFET drain/source |
| Pins 5, 6, 7, 8 | Channel 2 Anode/Cathode & Drain/Source | Internally shorted - forms second SPST switch; electrically isolated from Channel 1 and input side |
Key Features
| Feature | Design Value |
|---|---|
| Dual SPST Form A configuration | Replaces two electromechanical relays with single DIP-8 footprint - saves PCB area and eliminates bounce/noise |
| Bi-directional signal switching | Supports AC and DC signals in either direction without polarity dependency - ideal for analog multiplexing |
| Low C×R product (340 pF·Ω) | Enables <100 ns settling in 50Ω systems - critical for high-speed data acquisition and ATE channel scanning |
| High transient immunity (≥1 kV/μs) | Withstands fast-rising noise transients in industrial test environments - improves system reliability |
| RoHS-compliant lead-free construction | Meets EU Directive 2011/65/EU - supports environmentally compliant manufacturing and global market access |
Applications
| Automatic Test Equipment (ATE) | Data Acquisition Systems |
|---|---|
Use Scenario: High-speed channel selection in semiconductor wafer probers and board-level functional testers. IC Role / Device Role / Timing Role: Dual SPST solid-state relay providing isolated, bounce-free signal path switching between DUT and measurement instruments. Use Value: 70 μs switching enables >14 kHz scan rate; 0.3 nA leakage prevents false readings in high-Z analog measurements. | Use Scenario: Multiplexing sensor inputs (thermocouples, strain gauges) into a shared ADC front-end. IC Role / Device Role / Timing Role: Bi-directional analog switch isolating sensitive measurement nodes from common-mode noise and ground loops. Use Value: 250 V withstand and 15 pF capacitance preserve signal fidelity up to 1 MHz; 3750 Vrms isolation protects downstream circuitry. |
| Multiplexer Architectures | EMR/Reed Relay Replacement |
Use Scenario: Building scalable 16:1 or 32:1 analog mux trees in portable dataloggers and modular instrumentation. IC Role / Device Role / Timing Role: Compact dual-channel switch enabling compact layout with minimized trace coupling between channels. Use Value: 300-mil DIP-8 footprint allows direct drop-in replacement of legacy EMRs; 34 Ω RON ensures <0.1% gain error at 10 mA. | Use Scenario: Upgrading legacy test fixtures using mechanical relays prone to contact wear and chatter. IC Role / Device Role / Timing Role: Solid-state alternative delivering infinite cycle life and silent operation without moving parts. Use Value: Eliminates maintenance downtime; 0.07 ms switching accelerates test throughput by >3× versus typical 20 ms EMRs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar solid-state relay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLP3558A | Single-channel, SO-6 package; 400 V rating; higher RON (100 Ω typ); 0.2 ms switching | Requires two devices for dual-channel function; better suited for higher-voltage industrial controls than ATE | Select when 400 V rating is mandatory and space allows separate SO-6 placements |
| PS7142-AL | Dual-channel, DIP-8; 200 V rating; 100 Ω RON; 0.5 ms switching; lower isolation (2500 Vrms) | Lower voltage and speed margin; suitable for cost-sensitive non-critical instrumentation | Choose only if 200 V rating suffices and 0.5 ms latency is acceptable in target system |
Compared with TLP3558A and PS7142-AL, the ASSR-302C-002E offers superior combination of dual-channel integration, 250 V rating, 70 μs speed, and 3750 Vrms isolation - making it optimal for high-fidelity, high-throughput ATE and precision DAQ designs where channel density and signal integrity are critical.
Availability
ASSR-302C-002E is available at Aetrix Electronics and suitable for automatic test equipment, data acquisition systems, and multiplexer architectures requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for ASSR-302C-002E 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
Broadcom Inc. (formerly Avago Technologies) is a global semiconductor leader specializing in infrastructure software, networking, and optoelectronics solutions.
The ASSR-302C series was engineered specifically for high-speed, low-noise signal switching in automated test and measurement systems - emphasizing reliability, low C×R, and precise timing control over wide temperature ranges.
FAQ
What is the maximum operating temperature range for the ASSR-302C-002E?
The ASSR-302C-002E is specified to operate reliably from –40°C to +85°C ambient temperature. This range is validated across all key parameters including on-resistance, leakage current, and switching times. The junction temperature must not exceed 125°C under continuous operation. Derating guidelines apply above 70°C ambient, particularly for sustained 50 mA output current loads.
Does the ASSR-302C-002E support bidirectional signal switching?
Yes, the ASSR-302C-002E supports true bidirectional analog and digital signal switching. Its internal MOSFET topology allows current flow in either direction across each channel's output terminals (pins 1–4 and 5–8), with identical on-resistance and capacitance characteristics regardless of signal polarity - a key advantage over diode-based or unidirectional solid-state relays.
What is the minimum input current required to activate the ASSR-302C-002E?
The ASSR-302C-002E turns on with a minimum input LED forward current of 1 mA at 25°C. For guaranteed performance across –40°C to +85°C, Avago recommends operating at 5 mA, which ensures robust activation even under worst-case aging and temperature conditions. Input voltage must remain below 0.8 V to guarantee reliable turn-off.
Is the ASSR-302C-002E certified for safety isolation standards?
Yes, the ASSR-302C-002E is UL Recognized per UL 1577 (3750 Vrms for 1 minute) and approved under CSA Component Acceptance Notice #5. It provides 7.4 mm creepage and 7.1 mm clearance between input and output sides, meeting reinforced insulation requirements for measurement category II equipment per IEC 61010-1.
Can the ASSR-302C-002E replace mechanical relays in existing PCB layouts?
The ASSR-302C-002E uses a standard 300-mil DIP-8 footprint compatible with many legacy EMR footprints, but pin functions differ fundamentally: it requires no coil drive circuitry and has no polarity-sensitive terminals. Layout adaptation is needed for LED current-limiting resistors and thermal relief, but no layer rework is required for basic footprint substitution in most ATE fixtures.
ASSR-302C-002E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Broadcom Limited
- Series:
- ASSR
- Packaging:
- Tube
- Product Status:
- Obsolete
- Mounting Type:
- Through Hole
- Circuit:
- SPST-NO (1 Form A) x 2
- Output Type:
- AC, DC
- Voltage - Input:
- 1.3VDC
- Voltage - Load:
- 0 V ~ 250 V
- Load Current:
- 50 mA
- On-State Resistance (Max):
- 50 Ohms
- Termination Style:
- PC Pin
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-DIP
- Approval Agency:
- CSA, UL
- Grade:
- -
- Qualification:
- -
ASSR-302C-002E FAQ
1.How can I place an order for ASSR-302C-002E through Aetrix?
Please submit a Request for Quotation (RFQ) for ASSR-302C-002E 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 ASSR-302C-002E reliable?
The price and inventory of ASSR-302C-002E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASSR-302C-002E is usually 5 days.
3.What payment methods are accepted for ASSR-302C-002E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASSR-302C-002E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASSR-302C-002E?
ASSR-302C-002E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASSR-302C-002E 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 ASSR-302C-002E?
For technical support, including ASSR-302C-002E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASSR-302C-002E requirements.
6.How does Aetrix verify that ASSR-302C-002E is sourced from the original manufacturer or authorized distributors?
All ASSR-302C-002E 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 ASSR-302C-002E meets industry standards.
7.What is the process for return or replacement of ASSR-302C-002E?
All ASSR-302C-002E units undergo pre-shipment inspection (PSI). If there is an issue with ASSR-302C-002E, 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 ASSR-302C-002E part is unused and in its original packaging.
Return procedure for ASSR-302C-002E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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