AVAGO HCPL-7851 (5962-97557)
- MIL-PRF-38534 Class H hermetically sealed sigma-delta analog isolation amplifier
- 100% electrical screening at −55°C, +25°C, and +125°C — full military temperature lot qualification
- 8.00 V/V gain, 0.1% nonlinearity, ±5mV offset voltage, 100 kHz bandwidth
- 8 kV/µs CMR at VCM = 1000V, 1,500Vdc isolation withstand, dual 4.5V to 5.5V supply
- QML-38534 listed, DESC SMD 5962-97557, dual-marked for DLA procurement traceability
Avago Technologies (now Broadcom) designed the HCPL-7851 as the MIL-PRF-38534 Class H variant of the HCPL-785x hermetic analog isolation amplifier family — delivering full military lot screening, QML-38534 qualification, and DESC SMD traceability to programs that cannot accept the commercial-grade HCPL-7850 for defense procurement. The HCPL-7851 is available from stock at Sparkle Electronics, a specialized hi-rel component distributor serving defense prime contractors, government procurement offices, and aerospace systems integrators who require full documentation packages, lot traceability, and conformance to DLA sourcing requirements. Manufactured and tested on a MIL-PRF-38534 certified line and included in the DLA Qualified Manufacturers List QML-38534 for hybrid microcircuits, the HCPL-7851 is dual-marked with both the Avago/Broadcom device designation and DESC SMD number 5962-97557 — the procurement reference for DLA-qualified analog isolation amplifier sourcing.
The distinction between the HCPL-7851 and its commercial counterpart AVAGO HCPL-7850 is not electrical performance — both share identical gain, nonlinearity, bandwidth, and CMR specifications — but qualification depth and documentation traceability. Where the HCPL-7850 receives electrical screening at 25°C only, the HCPL-7851 undergoes 100% electrical characterization at −55°C, +25°C, and +125°C across all specified subgroups, with lot-controlled documentation required for QML-38534 procurement. For aerospace and defense programs where component qualification documentation is a contractual requirement, not an optional supplement, the HCPL-7851 is the correct and only acceptable specification. Contact Sparkle Electronics to confirm stock, lot availability, and documentation requirements for your program.
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DESC SMD Number: 5962-97557
The HCPL-7851 is procurable under DESC Standard Microcircuit Drawing number 5962-97557, issued by the Defense Logistics Agency. This SMD number places the device on the DLA Qualified Manufacturers List QML-38534 for hybrid microcircuits, establishing the lot-controlled traceability chain required by defense contracts subject to MIL-SPEC sourcing obligations. The HCPL-7851 is dual-marked with both the Avago/Broadcom part number and the DLA SMD number, satisfying the dual-marking requirement for QML-qualified defense procurement.
Specific SMD extensions by lead configuration: gold plate standard = 5962-9755701HPC; solder dipped = 5962-9755701HPA; butt joint gold plate = 5962-9755701HYC; gull wing solder = 5962-9755701HXA. Each extension specifies both the qualification class and the lead finish, enabling precise procurement documentation without ambiguity. Procurement teams sourcing 5962-97557 stock, verifying QML-38534 analog isolation amplifier availability, or requiring MIL-PRF-38534 Class H isolation amplifier lot documentation can submit requirements directly to Sparkle Electronics. Certificate of conformance, screening test records, and country of origin documentation are supplied with each lot. Contact our team to confirm documentation scope before order placement.
HCPL-7851 vs. HCPL-7850: The Qualification Difference That Defense Procurement Requires
The decision between the HCPL-7851 and the HCPL-7850 is not a performance decision — it is a procurement qualification decision. Both devices are electrically identical, manufactured on the same MIL-PRF-38534 certified production line, and capable of operating across the full −55°C to +125°C military temperature range. The difference is the depth and documentation of screening applied to each lot, and the resulting traceability available at the procurement level.
The HCPL-7850 receives 100% electrical testing at 25°C — adequate for commercial and industrial programs operating within qualified temperature limits. The HCPL-7851 receives 100% electrical testing at −55°C, +25°C, and +125°C across all MIL-PRF-38534 Class H subgroups, with full lot documentation traceable to QML-38534. For defense programs operating under procurement specifications that require DLA QML traceability, MIL-PRF-38534 Class H conformance certificates, or lot-level documentation for component qualification packages, the HCPL-7851 is the required part. Procurement engineers sourcing HCPL-7851 in stock, 5962-97557 MIL-PRF-38534 Class H analog isolation amplifier, or QML-38534 hermetic isolation amplifier defense distributor will find Sparkle Electronics maintains ready inventory with same-day response capability. Submit an inquiry for pricing, lot documentation scope, and confirmed lead time within 24 hours.
HCPL-7851 vs. HCPL-7850 vs. ACPL-785E: Screening Level Comparison
| Parameter | HCPL-7851 | HCPL-7850 | ACPL-785E |
|---|---|---|---|
| Availability | In Stock at Sparkle | In Stock at Sparkle | Confirm with Sparkle |
| Screening Class | MIL-PRF-38534 Class H | Commercial hermetic | MIL-PRF-38534 Class E |
| Temperature Screening | −55°C, +25°C, +125°C | +25°C only | −55°C, +25°C, +125°C |
| QML-38534 | Yes | No | Yes (with exceptions) |
| DLA SMD | 5962-9755701HPC | None | 5962-9755701EPC |
| PIND Screening | Required | Not required | Not required |
| Die Shear Testing | Required | Not required | Not required |
| Gain | 8.00 V/V ±5% | 8.00 V/V ±5% | 8.00 V/V ±5% |
| Nonlinearity | 0.1% max | 0.1% max | 0.1% max |
| Bandwidth | 100 kHz typ | 100 kHz typ | 100 kHz typ |
| CMR | 8 kV/µs typ | 8 kV/µs typ | 8 kV/µs typ |
| Package | 8-pin CDIP hermetic | 8-pin CDIP hermetic | 8-pin CDIP hermetic |
| Temperature Range | −55°C to +125°C | −55°C to +125°C | −55°C to +125°C |
Class E (ACPL-785E) provides a near-Class-K screening level with defined exceptions — specifically, Nondestructive Bond Pull, PIND, Die Shear, Internal Water Vapor Content, and SEM Inspection are not required. For programs where full Class H screening without exceptions is required, the HCPL-7851 under SMD 5962-97557 is the only conformant option.
Sigma-Delta Architecture and Why It Matters for Defense Analog Isolation
The HCPL-7851 uses a sigma-delta ADC on the input side to convert the analog voltage signal into a noise-shaped digital bit stream. That digital stream crosses the optical isolation barrier, and a DAC with on-chip output filter reconstructs the analog signal on the output side. Because the optical path transmits only a digital signal, the analog accuracy specifications — gain, nonlinearity, and offset voltage — are determined entirely by the ADC and DAC performance, not by LED or phototransistor characteristics that vary with temperature and aging. This architecture delivers 0.1% nonlinearity and ±5mV offset voltage that are stable across −55°C to +125°C without field calibration, making the HCPL-7851 a dependable long-term measurement reference in defense power management and motor control applications where current sensing accuracy directly affects system performance and safety margins.
Within the Sparkle Electronics hermetic optocoupler portfolio, the HCPL-7851 occupies a unique position as the only MIL-PRF-38534 qualified analog isolation device. For programs requiring digital isolation rather than analog, the AVAGO HCPL-5201 (5962-88768), AVAGO HCPL-5430, and AVAGO HCPL-6631 (8102802) cover the full speed and channel count range under equivalent MIL-PRF-38534 qualification. For analog and signal chain isolation requirements across avionics systems and satellite and space programs, Sparkle Electronics maintains inventory of qualified hermetic devices with full documentation support.
Frequently Asked Questions
What does HCPL-7851 decode to?
HCPL = Hewlett-Packard Coupled Product Line (original HP series, now Broadcom); 78 = hermetically sealed analog isolation amplifier family; 51 = MIL-PRF-38534 Class H qualified variant. The HCPL-7850 is the commercial hermetic version; the ACPL-785E is the Class E screened version. All three share identical electrical die, package, and specifications — qualification depth and associated documentation are the differentiating factors.
Where can I buy HCPL-7851 in stock?
Sparkle Electronics maintains stock of the HCPL-7851 for defense and aerospace procurement. Contact our team for current pricing, lot availability, lead configuration options, and the full documentation package. Same-day response on qualified inquiries — we supply defense prime contractors, government procurement offices, and avionics systems integrators globally.
What documentation is available with the HCPL-7851?
Sparkle Electronics provides certificate of conformance, MIL-PRF-38534 Class H screening test records, lot traceability documentation, and country of origin certification with each procurement. Additional documentation requirements specific to your program’s qualification package should be submitted at inquiry stage to confirm availability before order placement.
What is the DESC SMD number and how is it used in procurement?
DESC SMD 5962-97557 is the DLA Standard Microcircuit Drawing for the HCPL-7851/ACPL-785E hermetic analog isolation amplifier family. The SMD number is the authoritative procurement reference for DLA-qualified sourcing — more specific than the commercial part number alone, and required on contracts specifying QML-38534 traceability. Lead-form and finish extensions append to the base SMD number: 5962-9755701HPC specifies Class H, gold plate, standard through-hole; 5962-9755701HXA specifies Class H, gull wing, solder finish.
What is the difference between Class H and Class E screening for this part?
Class H requires the full MIL-PRF-38534 screening sequence including PIND (Particle Impact Noise Detection), Nondestructive Bond Pull, Die Shear Strength, Internal Water Vapor Content measurement, and SEM inspection. Class E (ACPL-785E) omits these five test methods but retains full electrical screening at all three temperature points. Both classes carry QML-38534 traceability. Programs with procurement specifications that require PIND screening or the full Class H test sequence must specify HCPL-7851 — ACPL-785E does not satisfy those requirements.
Is the HCPL-7851 suitable for space applications?
The HCPL-7851 under MIL-PRF-38534 Class H provides a high qualification baseline, but space programs typically require Class K or Class E with radiation hardness assurance data. Sparkle Electronics recommends confirming specific program qualification requirements before committing to the HCPL-7851 for space-grade procurement. Contact us to discuss lot documentation and radiation data availability for your specific application.
Procuring HCPL-7851 for a defense program requiring MIL-PRF-38534 Class H analog isolation? Sparkle Electronics stocks QML-38534 qualified hermetic isolation amplifiers with full lot traceability, conformance documentation, and DLA SMD support. Submit an inquiry — same-day response on pricing, lot availability, lead configuration, and documentation scope.
